hibernate LazyInitializationException 这是非常诡计
a hibernate LazyInitializationException which is very trick
我有两段代码，几乎一模一样，只是位置不同，一段在RestLoginDLCtrl(控制器)，一段在CouponManagerController(控制器)，但有一段代码是对的，另一个抛出 org.hibernate.LazyInitializationException.
我知道如何解决我的问题。最让我困惑的是为什么一个可以，另一个是错误的，但它们几乎是相同的代码。为什么？任何帮助将不胜感激。
ConversionCode 是一个值对象，它有一个名为 codeRewards 的集合，而 managerService 是一个服务 class。
注：
终于，我发现了一些有趣的现象。当我使用ajax方式来posthttp请求时，两种方法都很好：
$.ajax({
type: "POST",
url: "/CouponInfo/useConversionCode.do",
data: {
code: key
},
dataType: "json",
success: function (data) {
}
});
但是当我使用form方式时，两种方法都没有work:Doeshibernate lazy初始化机制与http请求方式有关系吗？
<form action=""></form>
CouponManagerController控制器class:
@Controller
@RequestMapping(value = "${adminPath}/CouponInfo")
public class CouponManagerController extends RestBaseCtrl {
@Autowired
CouponManagerService managerService;
@ResponseBody
public void useConversionCode(String code, HttpServletRequest request, HttpServletResponse response) {
response.setContentType("text/json;charset=utf-8");
try {
LoginCustInfo info = (LoginCustInfo) request.getSession().getAttribute(SystemProperties.DUOLIJR_LOGIN_USER);
ConversionCode conversionCode = managerService.queryConversionCodeByCode(code);
if (conversionCode != null) {
managerService.useConversionCode(conversionCode, info.getCustId());
response.getWriter().print("[{\"success\":\"true\",\"message\":\"兑换成功\"}]");
} else {
response.getWriter().print("[{\"success\":\"false\",\"message\":\"无效兑换码\"}]");
}
} catch (ParseException e) {
e.printStackTrace();
try {
response.getWriter().print("[{\"success\":\"false\",\"message\":\"兑换失败！请稍后重试！\"}]");
} catch (IOException e1) {
e1.printStackTrace();
}
} catch (IOException e) {
e.printStackTrace();
try {
response.getWriter().print("[{\"success\":\"false\",\"message\":\"兑换失败！请稍后重试！\"}]");
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
}
RestLoginDLCtrl控制器class:
@Controller
@RequestMapping(value = "${adminPath}/yqxqrest/loginDLCtrl", method = RequestMethod.POST)
public class RestLoginDLCtrl extends RestBaseCtrl {
@Autowired
CouponManagerService managerService;
@RequestMapping(value = "useConversionCode")
@ResponseBody
public void useConversionCode(String code, HttpServletRequest request, HttpServletResponse response) {
response.setContentType("text/json;charset=utf-8");
try {
LoginCustInfo info = (LoginCustInfo) request.getSession().getAttribute(SystemProperties.DUOLIJR_LOGIN_USER);
ConversionCode conversionCode = managerService.queryConversionCodeByCode(code);
if (conversionCode != null) {
managerService.useConversionCode(conversionCode, info.getCustId());
response.getWriter().print("[{\"success\":\"true\",\"message\":\"兑换成功\"}]");
} else {
response.getWriter().print("[{\"success\":\"false\",\"message\":\"无效兑换码\"}]");
}
} catch (ParseException e) {
e.printStackTrace();
try {
response.getWriter().print("[{\"success\":\"false\",\"message\":\"兑换失败！请稍后重试！\"}]");
} catch (IOException e1) {
e1.printStackTrace();
}
} catch (IOException e) {
e.printStackTrace();
try {
response.getWriter().print("[{\"success\":\"false\",\"message\":\"兑换失败！请稍后重试！\"}]");
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
}
CouponManagerServiceImpl 服务class:
@Service("ActivitiesCouponsService")
public class CouponManagerServiceImpl extends BaseServiceImpl implements CouponManagerService {
@Autowired
JdbcDao jdbcDao;
@Autowired
ActivitiesCouponsService couponsService;
@Override
public ConversionCode queryConversionCodeByCode(String code){
ConversionCode conversionCode=null;
String hql = " from ConversionCode where DELETE_FLAG=0 and state=0 and code='"+code+"'";
List<ConversionCode> codes = jdbcDao.find(hql);
if (codes.size()>0) {
conversionCode=codes.get(0);
}
return conversionCode;
}
/**
* 使用兑换码
* @param conversionCode
* @param custId
* @throws ParseException
*/
@Override
public void useConversionCode(ConversionCode conversionCode,Integer custId) throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Date now = new Date();
Calendar endTime = Calendar.getInstance();
endTime.setTime(sdf.parse(sdf.format(now)));
Set<ConversionCodeReward> codeRewards=conversionCode.getCodeRewards();
StringBuffer sb=new StringBuffer();
String a="";
for(ConversionCodeReward codeReward:codeRewards) {
CustActivitiesInfo activitiesInfo = new CustActivitiesInfo();
activitiesInfo.setCustId(custId);
activitiesInfo.setCouponsType(codeReward.getCouponsType());
String couponsName=couponsService.findUcTypeDictionaryBycode("COUPONS_TYPE", codeReward.getCouponsType() + "").getItemName();
activitiesInfo.setCouponsName(couponsName);
activitiesInfo.setActivitiesAmount(codeReward.getActivitiesAmount());
endTime.add(Calendar.DAY_OF_YEAR, Integer.valueOf(codeReward.getValidPeriod()));
endTime.add(Calendar.SECOND, -1);
activitiesInfo.setStartDate(sdf.parse(sdf.format(now)));
activitiesInfo.setEndDate(endTime.getTime());
activitiesInfo.setTaskAction("兑换码");
activitiesInfo.setUseMeetAmount(codeReward.getUseMeetAmount());
activitiesInfo.setUsePlanType(codeReward.getUsePlanType());
activitiesInfo.setUsePlanPeriod(codeReward.getUsePlanPeriod());
activitiesInfo.setState(1);
jdbcDao.saveObject(activitiesInfo);
sb.append("1张"+codeReward.getCouponsName()+"、");
}
conversionCode.setState(1);
jdbcDao.updateObject(conversionCode);
}
}
ConversionCode 值对象class:
@Entity
@Table(name = "conversion_code")
public class ConversionCode extends BaseEntity implements java.io.Serializable{
private int id;
private String code;
private Date endDate;
private int state;
private String remark;
private Set<ConversionCodeReward> codeRewards;
public ConversionCode(int id,String code,Date endDate,int state,String remark){
super();
this.id=id;
this.code=code;
this.endDate=endDate;
this.state=state;
this.remark=remark;
}
public ConversionCode(){
}
@Id
@GeneratedValue(strategy = IDENTITY)
@Column(name = "id", unique = true, nullable = false)
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
@Column(name = "code")
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
@Column(name = "end_date")
public Date getEndDate() {
return endDate;
}
public void setEndDate(Date endDate) {
this.endDate = endDate;
}
@Column(name = "state")
public int getState() {
return state;
}
public void setState(int state) {
this.state = state;
}
@ManyToMany(fetch=FetchType.LAZY,mappedBy="codes")
public Set<ConversionCodeReward> getCodeRewards() {
return codeRewards;
}
public void setCodeRewards(Set<ConversionCodeReward> codeRewards) {
this.codeRewards = codeRewards;
}
@Column(name = "remark")
public String getRemark() {
return remark;
}
public void setRemark(String remark) {
this.remark = remark;
}
}
ConversionCodeReward 值对象class:
@Entity
@Table(name = "conversion_code_reward")
public class ConversionCodeReward extends BaseEntity implements java.io.Serializable{
private Integer id;
private String couponsName;
private int couponsType;
private double activitiesAmount;
private int validPeriod;
private double useMeetAmount;
private String usePlanType;
private int usePlanPeriod;
private Set<ConversionCode> codes;
public ConversionCodeReward(Integer id,String couponsName,int couponsType,double activitiesAmount,
int validPeriod,double useMeetAmount,String usePlanType,int usePlanPeriod){
super();
this.id=id;
this.couponsName=couponsName;
this.couponsType=couponsType;
this.activitiesAmount=activitiesAmount;
this.validPeriod=validPeriod;
this.useMeetAmount=useMeetAmount;
this.usePlanType=usePlanType;
this.usePlanPeriod=usePlanPeriod;
}
public ConversionCodeReward(){
}
@Id
@GeneratedValue(strategy = IDENTITY)
@Column(name = "id", unique = true, nullable = false)
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
@Column(name = "coupons_name")
public String getCouponsName() {
return couponsName;
}
public void setCouponsName(String couponsName) {
this.couponsName = couponsName;
}
@Column(name = "coupons_type")
public int getCouponsType() {
return couponsType;
}
public void setCouponsType(int couponsType) {
this.couponsType = couponsType;
}
@Column(name = "activities_amount")
public double getActivitiesAmount() {
return activitiesAmount;
}
public void setActivitiesAmount(double activitiesAmount) {
this.activitiesAmount = activitiesAmount;
}
@Column(name = "valid_period")
public int getValidPeriod() {
return validPeriod;
}
public void setValidPeriod(int validPeriod) {
this.validPeriod = validPeriod;
}
@Column(name = "use_meet_amount")
public double getUseMeetAmount() {
return useMeetAmount;
}
public void setUseMeetAmount(double useMeetAmount) {
this.useMeetAmount = useMeetAmount;
}
@Column(name = "use_planType")
public String getUsePlanType() {
return usePlanType;
}
public void setUsePlanType(String usePlanType) {
this.usePlanType = usePlanType;
}
@Column(name = "use_planPeriod")
public int getUsePlanPeriod() {
return usePlanPeriod;
}
public void setUsePlanPeriod(int usePlanPeriod) {
this.usePlanPeriod = usePlanPeriod;
}
@ManyToMany(cascade={CascadeType.MERGE,CascadeType.REFRESH},fetch=FetchType.LAZY)
@JoinTable(name = "code_and_reward",
joinColumns = { @JoinColumn(name = "reward_id") },
inverseJoinColumns = { @JoinColumn(name = "code_id") })
@Where(clause="DELETE_FLAG=0")
public Set<ConversionCode> getCodes() {
return codes;
}
public void setCodes(Set<ConversionCode> codes) {
this.codes = codes;
}
}
异常堆栈跟踪：
2015-12-16 15:38:34,059 ERROR (org.hibernate.LazyInitializationException:19) - failed to lazily initialize a collection of role: com.yiqixiangqian.entity.ConversionCode.codeRewards, no session or session was closed
org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.yiqixiangqian.entity.ConversionCode.codeRewards, no session or session was closed
at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:358)
at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:350)
at org.hibernate.collection.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:343)
at org.hibernate.collection.AbstractPersistentCollection.read(AbstractPersistentCollection.java:86)
at org.hibernate.collection.PersistentSet.iterator(PersistentSet.java:163)
at com.yqxqfront.coupon.service.impl.CouponManagerServiceImpl.useConversionCode(CouponManagerServiceImpl.java:152)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:80)
at com.yiqixiangqian.common.log.LogAspect.around(LogAspect.java:31)
at sun.reflect.GeneratedMethodAccessor255.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:621)
at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:610)
at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:65)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.adapter.AfterReturningAdviceInterceptor.invoke(AfterReturningAdviceInterceptor.java:51)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:51)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.transaction.interceptor.TransactionInterceptor.proceedWithInvocation(TransactionInterceptor.java:96)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:260)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:91)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at com.sun.proxy.$Proxy119.useConversionCode(Unknown Source)
at com.yqxqfront.rest.controller.RestLoginDLCtrl.useConversionCode(RestLoginDLCtrl.java:665)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:219)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:745)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:686)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:838)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:154)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.ui.DefaultLoginPageGeneratingFilter.doFilter(DefaultLoginPageGeneratingFilter.java:155)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:199)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.access.channel.ChannelProcessingFilter.doFilter(ChannelProcessingFilter.java:144)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.yqxqfront.rest.filter.SessionFilter.doFilter(SessionFilter.java:186)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.yqxqfront.filter.ImageVerifyCodeFilter.doFilter(ImageVerifyCodeFilter.java:66)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:615)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:879)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:617)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1774)
at java.lang.Thread.run(Thread.java:662)
Hibernate: select custmessag0_.UID as UID245_, custmessag0_.CREATE_DATE as CREATE2_245_, custmessag0_.CREATED_BY as CREATED3_245_, custmessag0_.DELETE_FLAG as DELETE4_245_, custmessag0_.LAST_UPDATE_DATE as LAST5_245_, custmessag0_.UPDATE_BY as UPDATE6_245_, custmessag0_.VERSION as VERSION245_, custmessag0_.CONTENT as CONTENT245_, custmessag0_.CUST_ID as CUST9_245_, custmessag0_.ISCHECK as ISCHECK245_, custmessag0_.PUB_DATE as PUB11_245_, custmessag0_.TITLE as TITLE245_, custmessag0_.TYPE as TYPE245_ from cust_message custmessag0_ where custmessag0_.CUST_ID=? and custmessag0_.ISCHECK=? and custmessag0_.DELETE_FLAG=0
failed to lazily initialize a collection of role: com.yiqixiangqian.entity.ConversionCode.codeRewards, no session or session was closed
位于CouponManagerController控制器中的useConversionCode()方法可以：
位于RestLoginDLCtrl控制器中的useConversionCode()方法错误并抛出LazyInitializationException异常：
终于，我发现了一些有趣的现象。当我使用 ajax 方式来 post HTTP 请求时，两种方法都很好：
$.ajax({
type: "POST",
url: "/CouponInfo/useConversionCode.do",
data: {
code: key
},
dataType: "json",
success: function (data) {
}
});
但是当我使用表单方式时，两种方法都不起作用：
<form action=""></form>
hibernate lazy初始化机制和http请求方式有关系吗？
我知道这个问题 occured.Suddenly，我发现 web.xml 文件中有一个 OpenSessionInViewFilter。
<filter>
<filter-name>OpenSessionInViewFilter</filter-name>
<filter-class>
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter
</filter-class>
<init-param>
<param-name>singleSession</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>OpenSessionInViewFilter</filter-name>
<url-pattern>*.do</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>OpenSessionInViewFilter</filter-name>
<url-pattern>*.jsp</url-pattern>
</filter-mapping>
在我的表单post请求方式中，我没有添加.do请求后缀，所以OpenSessionInViewFilter没有起作用，所以出现了LazyInitializationException。
但是ajaxpost请求方式添加了.do请求后缀，所以OpenSessionInViewFilter起作用了，没有出现LazyInitializationException
我有两段代码，几乎一模一样，只是位置不同，一段在RestLoginDLCtrl(控制器)，一段在CouponManagerController(控制器)，但有一段代码是对的，另一个抛出 org.hibernate.LazyInitializationException.
我知道如何解决我的问题。最让我困惑的是为什么一个可以，另一个是错误的，但它们几乎是相同的代码。为什么？任何帮助将不胜感激。
ConversionCode 是一个值对象，它有一个名为 codeRewards 的集合，而 managerService 是一个服务 class。
注：
终于，我发现了一些有趣的现象。当我使用ajax方式来posthttp请求时，两种方法都很好：
$.ajax({
type: "POST",
url: "/CouponInfo/useConversionCode.do",
data: {
code: key
},
dataType: "json",
success: function (data) {
}
});
但是当我使用form方式时，两种方法都没有work:Doeshibernate lazy初始化机制与http请求方式有关系吗？
<form action=""></form>
CouponManagerController控制器class:
@Controller
@RequestMapping(value = "${adminPath}/CouponInfo")
public class CouponManagerController extends RestBaseCtrl {
@Autowired
CouponManagerService managerService;
@ResponseBody
public void useConversionCode(String code, HttpServletRequest request, HttpServletResponse response) {
response.setContentType("text/json;charset=utf-8");
try {
LoginCustInfo info = (LoginCustInfo) request.getSession().getAttribute(SystemProperties.DUOLIJR_LOGIN_USER);
ConversionCode conversionCode = managerService.queryConversionCodeByCode(code);
if (conversionCode != null) {
managerService.useConversionCode(conversionCode, info.getCustId());
response.getWriter().print("[{\"success\":\"true\",\"message\":\"兑换成功\"}]");
} else {
response.getWriter().print("[{\"success\":\"false\",\"message\":\"无效兑换码\"}]");
}
} catch (ParseException e) {
e.printStackTrace();
try {
response.getWriter().print("[{\"success\":\"false\",\"message\":\"兑换失败！请稍后重试！\"}]");
} catch (IOException e1) {
e1.printStackTrace();
}
} catch (IOException e) {
e.printStackTrace();
try {
response.getWriter().print("[{\"success\":\"false\",\"message\":\"兑换失败！请稍后重试！\"}]");
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
}
RestLoginDLCtrl控制器class:
@Controller
@RequestMapping(value = "${adminPath}/yqxqrest/loginDLCtrl", method = RequestMethod.POST)
public class RestLoginDLCtrl extends RestBaseCtrl {
@Autowired
CouponManagerService managerService;
@RequestMapping(value = "useConversionCode")
@ResponseBody
public void useConversionCode(String code, HttpServletRequest request, HttpServletResponse response) {
response.setContentType("text/json;charset=utf-8");
try {
LoginCustInfo info = (LoginCustInfo) request.getSession().getAttribute(SystemProperties.DUOLIJR_LOGIN_USER);
ConversionCode conversionCode = managerService.queryConversionCodeByCode(code);
if (conversionCode != null) {
managerService.useConversionCode(conversionCode, info.getCustId());
response.getWriter().print("[{\"success\":\"true\",\"message\":\"兑换成功\"}]");
} else {
response.getWriter().print("[{\"success\":\"false\",\"message\":\"无效兑换码\"}]");
}
} catch (ParseException e) {
e.printStackTrace();
try {
response.getWriter().print("[{\"success\":\"false\",\"message\":\"兑换失败！请稍后重试！\"}]");
} catch (IOException e1) {
e1.printStackTrace();
}
} catch (IOException e) {
e.printStackTrace();
try {
response.getWriter().print("[{\"success\":\"false\",\"message\":\"兑换失败！请稍后重试！\"}]");
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
}
CouponManagerServiceImpl 服务class:
@Service("ActivitiesCouponsService")
public class CouponManagerServiceImpl extends BaseServiceImpl implements CouponManagerService {
@Autowired
JdbcDao jdbcDao;
@Autowired
ActivitiesCouponsService couponsService;
@Override
public ConversionCode queryConversionCodeByCode(String code){
ConversionCode conversionCode=null;
String hql = " from ConversionCode where DELETE_FLAG=0 and state=0 and code='"+code+"'";
List<ConversionCode> codes = jdbcDao.find(hql);
if (codes.size()>0) {
conversionCode=codes.get(0);
}
return conversionCode;
}
/**
* 使用兑换码
* @param conversionCode
* @param custId
* @throws ParseException
*/
@Override
public void useConversionCode(ConversionCode conversionCode,Integer custId) throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Date now = new Date();
Calendar endTime = Calendar.getInstance();
endTime.setTime(sdf.parse(sdf.format(now)));
Set<ConversionCodeReward> codeRewards=conversionCode.getCodeRewards();
StringBuffer sb=new StringBuffer();
String a="";
for(ConversionCodeReward codeReward:codeRewards) {
CustActivitiesInfo activitiesInfo = new CustActivitiesInfo();
activitiesInfo.setCustId(custId);
activitiesInfo.setCouponsType(codeReward.getCouponsType());
String couponsName=couponsService.findUcTypeDictionaryBycode("COUPONS_TYPE", codeReward.getCouponsType() + "").getItemName();
activitiesInfo.setCouponsName(couponsName);
activitiesInfo.setActivitiesAmount(codeReward.getActivitiesAmount());
endTime.add(Calendar.DAY_OF_YEAR, Integer.valueOf(codeReward.getValidPeriod()));
endTime.add(Calendar.SECOND, -1);
activitiesInfo.setStartDate(sdf.parse(sdf.format(now)));
activitiesInfo.setEndDate(endTime.getTime());
activitiesInfo.setTaskAction("兑换码");
activitiesInfo.setUseMeetAmount(codeReward.getUseMeetAmount());
activitiesInfo.setUsePlanType(codeReward.getUsePlanType());
activitiesInfo.setUsePlanPeriod(codeReward.getUsePlanPeriod());
activitiesInfo.setState(1);
jdbcDao.saveObject(activitiesInfo);
sb.append("1张"+codeReward.getCouponsName()+"、");
}
conversionCode.setState(1);
jdbcDao.updateObject(conversionCode);
}
}
ConversionCode 值对象class:
@Entity
@Table(name = "conversion_code")
public class ConversionCode extends BaseEntity implements java.io.Serializable{
private int id;
private String code;
private Date endDate;
private int state;
private String remark;
private Set<ConversionCodeReward> codeRewards;
public ConversionCode(int id,String code,Date endDate,int state,String remark){
super();
this.id=id;
this.code=code;
this.endDate=endDate;
this.state=state;
this.remark=remark;
}
public ConversionCode(){
}
@Id
@GeneratedValue(strategy = IDENTITY)
@Column(name = "id", unique = true, nullable = false)
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
@Column(name = "code")
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
@Column(name = "end_date")
public Date getEndDate() {
return endDate;
}
public void setEndDate(Date endDate) {
this.endDate = endDate;
}
@Column(name = "state")
public int getState() {
return state;
}
public void setState(int state) {
this.state = state;
}
@ManyToMany(fetch=FetchType.LAZY,mappedBy="codes")
public Set<ConversionCodeReward> getCodeRewards() {
return codeRewards;
}
public void setCodeRewards(Set<ConversionCodeReward> codeRewards) {
this.codeRewards = codeRewards;
}
@Column(name = "remark")
public String getRemark() {
return remark;
}
public void setRemark(String remark) {
this.remark = remark;
}
}
ConversionCodeReward 值对象class:
@Entity
@Table(name = "conversion_code_reward")
public class ConversionCodeReward extends BaseEntity implements java.io.Serializable{
private Integer id;
private String couponsName;
private int couponsType;
private double activitiesAmount;
private int validPeriod;
private double useMeetAmount;
private String usePlanType;
private int usePlanPeriod;
private Set<ConversionCode> codes;
public ConversionCodeReward(Integer id,String couponsName,int couponsType,double activitiesAmount,
int validPeriod,double useMeetAmount,String usePlanType,int usePlanPeriod){
super();
this.id=id;
this.couponsName=couponsName;
this.couponsType=couponsType;
this.activitiesAmount=activitiesAmount;
this.validPeriod=validPeriod;
this.useMeetAmount=useMeetAmount;
this.usePlanType=usePlanType;
this.usePlanPeriod=usePlanPeriod;
}
public ConversionCodeReward(){
}
@Id
@GeneratedValue(strategy = IDENTITY)
@Column(name = "id", unique = true, nullable = false)
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
@Column(name = "coupons_name")
public String getCouponsName() {
return couponsName;
}
public void setCouponsName(String couponsName) {
this.couponsName = couponsName;
}
@Column(name = "coupons_type")
public int getCouponsType() {
return couponsType;
}
public void setCouponsType(int couponsType) {
this.couponsType = couponsType;
}
@Column(name = "activities_amount")
public double getActivitiesAmount() {
return activitiesAmount;
}
public void setActivitiesAmount(double activitiesAmount) {
this.activitiesAmount = activitiesAmount;
}
@Column(name = "valid_period")
public int getValidPeriod() {
return validPeriod;
}
public void setValidPeriod(int validPeriod) {
this.validPeriod = validPeriod;
}
@Column(name = "use_meet_amount")
public double getUseMeetAmount() {
return useMeetAmount;
}
public void setUseMeetAmount(double useMeetAmount) {
this.useMeetAmount = useMeetAmount;
}
@Column(name = "use_planType")
public String getUsePlanType() {
return usePlanType;
}
public void setUsePlanType(String usePlanType) {
this.usePlanType = usePlanType;
}
@Column(name = "use_planPeriod")
public int getUsePlanPeriod() {
return usePlanPeriod;
}
public void setUsePlanPeriod(int usePlanPeriod) {
this.usePlanPeriod = usePlanPeriod;
}
@ManyToMany(cascade={CascadeType.MERGE,CascadeType.REFRESH},fetch=FetchType.LAZY)
@JoinTable(name = "code_and_reward",
joinColumns = { @JoinColumn(name = "reward_id") },
inverseJoinColumns = { @JoinColumn(name = "code_id") })
@Where(clause="DELETE_FLAG=0")
public Set<ConversionCode> getCodes() {
return codes;
}
public void setCodes(Set<ConversionCode> codes) {
this.codes = codes;
}
}
异常堆栈跟踪：
2015-12-16 15:38:34,059 ERROR (org.hibernate.LazyInitializationException:19) - failed to lazily initialize a collection of role: com.yiqixiangqian.entity.ConversionCode.codeRewards, no session or session was closed
org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.yiqixiangqian.entity.ConversionCode.codeRewards, no session or session was closed
at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:358)
at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:350)
at org.hibernate.collection.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:343)
at org.hibernate.collection.AbstractPersistentCollection.read(AbstractPersistentCollection.java:86)
at org.hibernate.collection.PersistentSet.iterator(PersistentSet.java:163)
at com.yqxqfront.coupon.service.impl.CouponManagerServiceImpl.useConversionCode(CouponManagerServiceImpl.java:152)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:80)
at com.yiqixiangqian.common.log.LogAspect.around(LogAspect.java:31)
at sun.reflect.GeneratedMethodAccessor255.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:621)
at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:610)
at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:65)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.adapter.AfterReturningAdviceInterceptor.invoke(AfterReturningAdviceInterceptor.java:51)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:51)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.transaction.interceptor.TransactionInterceptor.proceedWithInvocation(TransactionInterceptor.java:96)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:260)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:91)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at com.sun.proxy.$Proxy119.useConversionCode(Unknown Source)
at com.yqxqfront.rest.controller.RestLoginDLCtrl.useConversionCode(RestLoginDLCtrl.java:665)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:219)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:745)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:686)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:838)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:154)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.ui.DefaultLoginPageGeneratingFilter.doFilter(DefaultLoginPageGeneratingFilter.java:155)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:199)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.access.channel.ChannelProcessingFilter.doFilter(ChannelProcessingFilter.java:144)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.yqxqfront.rest.filter.SessionFilter.doFilter(SessionFilter.java:186)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.yqxqfront.filter.ImageVerifyCodeFilter.doFilter(ImageVerifyCodeFilter.java:66)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:615)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:879)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:617)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1774)
at java.lang.Thread.run(Thread.java:662)
Hibernate: select custmessag0_.UID as UID245_, custmessag0_.CREATE_DATE as CREATE2_245_, custmessag0_.CREATED_BY as CREATED3_245_, custmessag0_.DELETE_FLAG as DELETE4_245_, custmessag0_.LAST_UPDATE_DATE as LAST5_245_, custmessag0_.UPDATE_BY as UPDATE6_245_, custmessag0_.VERSION as VERSION245_, custmessag0_.CONTENT as CONTENT245_, custmessag0_.CUST_ID as CUST9_245_, custmessag0_.ISCHECK as ISCHECK245_, custmessag0_.PUB_DATE as PUB11_245_, custmessag0_.TITLE as TITLE245_, custmessag0_.TYPE as TYPE245_ from cust_message custmessag0_ where custmessag0_.CUST_ID=? and custmessag0_.ISCHECK=? and custmessag0_.DELETE_FLAG=0
failed to lazily initialize a collection of role: com.yiqixiangqian.entity.ConversionCode.codeRewards, no session or session was closed
位于CouponManagerController控制器中的useConversionCode()方法可以：
位于RestLoginDLCtrl控制器中的useConversionCode()方法错误并抛出LazyInitializationException异常：
终于，我发现了一些有趣的现象。当我使用 ajax 方式来 post HTTP 请求时，两种方法都很好：
$.ajax({
type: "POST",
url: "/CouponInfo/useConversionCode.do",
data: {
code: key
},
dataType: "json",
success: function (data) {
}
});
但是当我使用表单方式时，两种方法都不起作用：
<form action=""></form>
hibernate lazy初始化机制和http请求方式有关系吗？
我知道这个问题 occured.Suddenly，我发现 web.xml 文件中有一个 OpenSessionInViewFilter。
<filter>
<filter-name>OpenSessionInViewFilter</filter-name>
<filter-class>
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter
</filter-class>
<init-param>
<param-name>singleSession</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>OpenSessionInViewFilter</filter-name>
<url-pattern>*.do</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>OpenSessionInViewFilter</filter-name>
<url-pattern>*.jsp</url-pattern>
</filter-mapping>
在我的表单post请求方式中，我没有添加.do请求后缀，所以OpenSessionInViewFilter没有起作用，所以出现了LazyInitializationException。
但是ajaxpost请求方式添加了.do请求后缀，所以OpenSessionInViewFilter起作用了，没有出现LazyInitializationException