Spring 教程示例 - Apache excel 使用 java 配置导出 POI
Spring tutorial example - Apache excel POI export using java config
我正在查看这个 mkyong tutorial 以导出到 excel。
它看起来很简单,也不太复杂。除了最后一步,我能够完成所有步骤。最后一步是 XML 配置步骤。我使用 java 注释配置设置了我的项目,教程中的示例在 xml 中。如何在 'java config' / annotaiton 中配置以下 XmlViewResolver
而不是 xml?请参阅下面的代码片段。
这是我不知道如何配置的部分。我正在尝试以 annotation/java 配置格式获取它。
Spring配置
<beans ...>
<bean
class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping" />
<bean class="com.mkyong.common.controller.RevenueReportController" />
<bean class="org.springframework.web.servlet.view.XmlViewResolver">
<property name="location">
<value>/WEB-INF/spring-excel-views.xml</value>
</property>
</bean>
</beans>
文件:spring-excel-views.xml
<bean id="ExcelRevenueSummary"
class="com.mkyong.common.view.ExcelRevenueReportView">
</bean>
这是我的控制器的样子。
@Controller
public class RevenueReportController extends AbstractController{
private Logger log = LoggerFactory.getLogger(getClass());
@Override
@RequestMapping(value = "/search/exportToExcel", method = RequestMethod.GET)
protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) throws Exception {
String output = ServletRequestUtils.getStringParameter(request, "output");
//dummy data
Map<String,String> revenueData = new HashMap<String,String>();
revenueData.put("Jan-2010", "0,000,000");
revenueData.put("Feb-2010", "0,000,000");
revenueData.put("Mar-2010", "0,000,000");
revenueData.put("Apr-2010", "0,000,000");
revenueData.put("May-2010", "0,000,000");
if(output ==null || "".equals(output)){
//return normal view
return new ModelAndView("RevenueSummary","revenueData",revenueData);
}else if("EXCEL".equals(output.toUpperCase())){
//return excel view
return new ModelAndView("ExcelRevenueSummary","revenueData",revenueData);
}else{
//return normal view
return new ModelAndView("RevenueSummary","revenueData",revenueData);
}
}
}
您需要进行如下更改:
新建配置class:
@Configuration
@ComponentScan("com.mkyong.common")
public class AppConfig {
@Autowired
ServletContext servletContext;
@Bean
public ViewResolver getXmlViewResolver() {
XmlViewResolver resolver = new XmlViewResolver();
resolver.setLocation(new ServletContextResource(servletContext,
"/WEB-INF/spring-excel-views.xml"));
return resolver;
}
}
用@Controller
注释你的控制器class
@Controller
public class RevenueReportController extends AbstractController {
}
spring-excel-views.xml
与您使用的 XmlViewResolver
相同。它期望 bean 定义在 XML 文件中。
将我的评论扩展到原始 post,这是一个不需要任何 xml 配置的版本。使用此解决方案,您可以完全消除 xml 视图。您可以将 excel 视图定义为另一个 bean 并直接在您的控制器中使用它。
配置class:
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
@EnableWebMvc
@ComponentScan(basePackages = { "com.mkyong.common" })
@Configuration
public class AppConfig extends WebMvcConfigurerAdapter {
@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
configurer.enable();
}
@Bean
public ExcelRevenueReportView excelRevenueReportView() {
return new ExcelRevenueReportView();
}
@Bean
public InternalResourceViewResolver getInternalResourceViewResolver() {
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-INF/");
resolver.setSuffix(".jsp");
return resolver;
}
}
控制器:
@Controller
public class RevenueReportController extends AbstractController{
private Logger log = LoggerFactory.getLogger(getClass());
@Autowired
ExcelRevenueReportView excelRevenueReportView;
@Override
@RequestMapping(value = "/search/exportToExcel", method = RequestMethod.GET)
protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) throws Exception {
String output = ServletRequestUtils.getStringParameter(request, "output");
//dummy data
Map<String,String> revenueData = new HashMap<String,String>();
revenueData.put("Jan-2010", "0,000,000");
revenueData.put("Feb-2010", "0,000,000");
revenueData.put("Mar-2010", "0,000,000");
revenueData.put("Apr-2010", "0,000,000");
revenueData.put("May-2010", "0,000,000");
if(output ==null || "".equals(output)){
//return normal view
return new ModelAndView("RevenueSummary","revenueData",revenueData);
}else if("EXCEL".equals(output.toUpperCase())){
//return excel view
new ModelAndView(excelRevenueReportView, "revenueData", revenueData);
}else{
//return normal view
return new ModelAndView("RevenueSummary","revenueData",revenueData);
}
}
}
我正在查看这个 mkyong tutorial 以导出到 excel。
它看起来很简单,也不太复杂。除了最后一步,我能够完成所有步骤。最后一步是 XML 配置步骤。我使用 java 注释配置设置了我的项目,教程中的示例在 xml 中。如何在 'java config' / annotaiton 中配置以下 XmlViewResolver
而不是 xml?请参阅下面的代码片段。
这是我不知道如何配置的部分。我正在尝试以 annotation/java 配置格式获取它。
Spring配置
<beans ...>
<bean
class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping" />
<bean class="com.mkyong.common.controller.RevenueReportController" />
<bean class="org.springframework.web.servlet.view.XmlViewResolver">
<property name="location">
<value>/WEB-INF/spring-excel-views.xml</value>
</property>
</bean>
</beans>
文件:spring-excel-views.xml
<bean id="ExcelRevenueSummary"
class="com.mkyong.common.view.ExcelRevenueReportView">
</bean>
这是我的控制器的样子。
@Controller
public class RevenueReportController extends AbstractController{
private Logger log = LoggerFactory.getLogger(getClass());
@Override
@RequestMapping(value = "/search/exportToExcel", method = RequestMethod.GET)
protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) throws Exception {
String output = ServletRequestUtils.getStringParameter(request, "output");
//dummy data
Map<String,String> revenueData = new HashMap<String,String>();
revenueData.put("Jan-2010", "0,000,000");
revenueData.put("Feb-2010", "0,000,000");
revenueData.put("Mar-2010", "0,000,000");
revenueData.put("Apr-2010", "0,000,000");
revenueData.put("May-2010", "0,000,000");
if(output ==null || "".equals(output)){
//return normal view
return new ModelAndView("RevenueSummary","revenueData",revenueData);
}else if("EXCEL".equals(output.toUpperCase())){
//return excel view
return new ModelAndView("ExcelRevenueSummary","revenueData",revenueData);
}else{
//return normal view
return new ModelAndView("RevenueSummary","revenueData",revenueData);
}
}
}
您需要进行如下更改:
新建配置class:
@Configuration
@ComponentScan("com.mkyong.common")
public class AppConfig {
@Autowired
ServletContext servletContext;
@Bean
public ViewResolver getXmlViewResolver() {
XmlViewResolver resolver = new XmlViewResolver();
resolver.setLocation(new ServletContextResource(servletContext,
"/WEB-INF/spring-excel-views.xml"));
return resolver;
}
}
用@Controller
@Controller
public class RevenueReportController extends AbstractController {
}
spring-excel-views.xml
与您使用的 XmlViewResolver
相同。它期望 bean 定义在 XML 文件中。
将我的评论扩展到原始 post,这是一个不需要任何 xml 配置的版本。使用此解决方案,您可以完全消除 xml 视图。您可以将 excel 视图定义为另一个 bean 并直接在您的控制器中使用它。
配置class:
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
@EnableWebMvc
@ComponentScan(basePackages = { "com.mkyong.common" })
@Configuration
public class AppConfig extends WebMvcConfigurerAdapter {
@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
configurer.enable();
}
@Bean
public ExcelRevenueReportView excelRevenueReportView() {
return new ExcelRevenueReportView();
}
@Bean
public InternalResourceViewResolver getInternalResourceViewResolver() {
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-INF/");
resolver.setSuffix(".jsp");
return resolver;
}
}
控制器:
@Controller
public class RevenueReportController extends AbstractController{
private Logger log = LoggerFactory.getLogger(getClass());
@Autowired
ExcelRevenueReportView excelRevenueReportView;
@Override
@RequestMapping(value = "/search/exportToExcel", method = RequestMethod.GET)
protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) throws Exception {
String output = ServletRequestUtils.getStringParameter(request, "output");
//dummy data
Map<String,String> revenueData = new HashMap<String,String>();
revenueData.put("Jan-2010", "0,000,000");
revenueData.put("Feb-2010", "0,000,000");
revenueData.put("Mar-2010", "0,000,000");
revenueData.put("Apr-2010", "0,000,000");
revenueData.put("May-2010", "0,000,000");
if(output ==null || "".equals(output)){
//return normal view
return new ModelAndView("RevenueSummary","revenueData",revenueData);
}else if("EXCEL".equals(output.toUpperCase())){
//return excel view
new ModelAndView(excelRevenueReportView, "revenueData", revenueData);
}else{
//return normal view
return new ModelAndView("RevenueSummary","revenueData",revenueData);
}
}
}