MyBatis foreach 更新无法看到集合中的所有项目参数
MyBatis foreach update can't see all item parameters from collection
我试图在我的映射器中使用@Update 中的 foreach 循环，但出乎意料的是，mybatis 在解析集合中的所有参数时遇到了问题。下面是一些细节：
@Update("<script>"
+ "<foreach collection='objects' item='item' separator=';'>"
+ "UPDATE some_table "
+ "SET field_x=#{item.x}, "
+ "field_y=#{item.y} "
+ "WHERE field_z=#{item.z} AND field_a=#{item.a}"
+ "</foreach>"
+ "</script>")
void update(@Param("objects") List<SomeObject> objects);
和：
public class SomeObject {
private String z;
private SomeEnum a;
private BigDecimal x;
private Integer y;
}
方法调用返回：
org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.type.TypeException: Could not set parameters for mapping: ParameterMapping{property='__frch_item_1.dailyAmount', mode=IN, javaType=class java.math.BigDecimal, jdbcType=null, numericScale=null, resultMapId='null', jdbcTypeName='null', expression='null'}. Cause: org.apache.ibatis.type.TypeException: Error setting non null for parameter #5 with JdbcType null . Try setting a different JdbcType for this parameter or a different configuration property. Cause: org.h2.jdbc.JdbcSQLException: Invalid value "5" for parameter "parameterIndex" [90008-196]
at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:77)
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:446)
at com.sun.proxy.$Proxy33.update(Unknown Source)
at org.mybatis.spring.SqlSessionTemplate.update(SqlSessionTemplate.java:294)
at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:62)
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59)
at com.sun.proxy.$Proxy43.updateLimits(Unknown Source)
at pl.raiffeisen.ekd.blik.core.persistence.DataProvider.updateLimits(DataProvider.java:76)
at pl.raiffeisen.ekd.blik.api.rest.settings.SettingsController.updateLimits(SettingsController.java:136)
at pl.raiffeisen.ekd.blik.test.rest.SettingsControllerTest.testUpdateLimitsSuccessPath(SettingsControllerTest.java:532)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:252)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94)
at org.junit.runners.ParentRunner.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access[=12=]0(ParentRunner.java:58)
at org.junit.runners.ParentRunner.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: org.apache.ibatis.type.TypeException: Could not set parameters for mapping: ParameterMapping{property='__frch_item_1.dailyAmount', mode=IN, javaType=class java.math.BigDecimal, jdbcType=null, numericScale=null, resultMapId='null', jdbcTypeName='null', expression='null'}. Cause: org.apache.ibatis.type.TypeException: Error setting non null for parameter #5 with JdbcType null . Try setting a different JdbcType for this parameter or a different configuration property. Cause: org.h2.jdbc.JdbcSQLException: Invalid value "5" for parameter "parameterIndex" [90008-196]
at org.apache.ibatis.scripting.defaults.DefaultParameterHandler.setParameters(DefaultParameterHandler.java:89)
at org.apache.ibatis.executor.statement.PreparedStatementHandler.parameterize(PreparedStatementHandler.java:93)
at org.apache.ibatis.executor.statement.RoutingStatementHandler.parameterize(RoutingStatementHandler.java:64)
at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:86)
at org.apache.ibatis.executor.SimpleExecutor.doUpdate(SimpleExecutor.java:49)
at org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:117)
at org.apache.ibatis.executor.CachingExecutor.update(CachingExecutor.java:76)
at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:198)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433)
... 38 more
Caused by: org.apache.ibatis.type.TypeException: Error setting non null for parameter #5 with JdbcType null . Try setting a different JdbcType for this parameter or a different configuration property. Cause: org.h2.jdbc.JdbcSQLException: Invalid value "5" for parameter "parameterIndex" [90008-196]
at org.apache.ibatis.type.BaseTypeHandler.setParameter(BaseTypeHandler.java:55)
at org.apache.ibatis.scripting.defaults.DefaultParameterHandler.setParameters(DefaultParameterHandler.java:87)
... 50 more
Caused by: org.h2.jdbc.JdbcSQLException: Invalid value "5" for parameter "parameterIndex" [90008-196]
at org.h2.message.DbException.getJdbcSQLException(DbException.java:345)
at org.h2.message.DbException.get(DbException.java:179)
at org.h2.message.DbException.getInvalidValueException(DbException.java:228)
at org.h2.jdbc.JdbcPreparedStatement.setParameter(JdbcPreparedStatement.java:1444)
at org.h2.jdbc.JdbcPreparedStatement.setBigDecimal(JdbcPreparedStatement.java:384)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.ibatis.logging.jdbc.PreparedStatementLogger.invoke(PreparedStatementLogger.java:67)
at com.sun.proxy.$Proxy58.setBigDecimal(Unknown Source)
at org.apache.ibatis.type.BigDecimalTypeHandler.setNonNullParameter(BigDecimalTypeHandler.java:32)
at org.apache.ibatis.type.BigDecimalTypeHandler.setNonNullParameter(BigDecimalTypeHandler.java:27)
at org.apache.ibatis.type.BaseTypeHandler.setParameter(BaseTypeHandler.java:53)
... 51 more
调试后我看到了这个：（在：org.h2.jdbc.JdbcPreparedStatement:1002）
this = prep19: UPDATE some_table SET field_x=?, field_y=? WHERE field_z=? AND field_a=? ;
UPDATE transaction_limit SET field_x=?, field_y=? WHERE field_z=? AND field_a=? ;
UPDATE transaction_limit SET field_x=?, field_y=? WHERE field_z=? AND type=? ;
{1: 250.00, 2: 1, 3: 'qwerty123', 4: 'VALUE1'}
应该是这样的：（示例值）
{1: 250.00, 2: 1, 3: 'qwerty123', 4: 'VALUE1',
5: 750.00, 6: 4, 7: 'qwerty123', 8: 'VALUE2',
9: 500.00, 10: 3, 11: 'qwerty123', 12: 'VALUE3'}
谁能告诉我为什么只有一个对象从列表映射而不是所有三个（将 3 元素列表传递给方法）？
我已经解决了这个问题。数据库 H2 显然不支持 foreach 脚本。使用 PostgreSQL 一切正常。
我试图在我的映射器中使用@Update 中的 foreach 循环，但出乎意料的是，mybatis 在解析集合中的所有参数时遇到了问题。下面是一些细节：
@Update("<script>"
+ "<foreach collection='objects' item='item' separator=';'>"
+ "UPDATE some_table "
+ "SET field_x=#{item.x}, "
+ "field_y=#{item.y} "
+ "WHERE field_z=#{item.z} AND field_a=#{item.a}"
+ "</foreach>"
+ "</script>")
void update(@Param("objects") List<SomeObject> objects);
和：
public class SomeObject {
private String z;
private SomeEnum a;
private BigDecimal x;
private Integer y;
}
方法调用返回：
org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.type.TypeException: Could not set parameters for mapping: ParameterMapping{property='__frch_item_1.dailyAmount', mode=IN, javaType=class java.math.BigDecimal, jdbcType=null, numericScale=null, resultMapId='null', jdbcTypeName='null', expression='null'}. Cause: org.apache.ibatis.type.TypeException: Error setting non null for parameter #5 with JdbcType null . Try setting a different JdbcType for this parameter or a different configuration property. Cause: org.h2.jdbc.JdbcSQLException: Invalid value "5" for parameter "parameterIndex" [90008-196]
at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:77)
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:446)
at com.sun.proxy.$Proxy33.update(Unknown Source)
at org.mybatis.spring.SqlSessionTemplate.update(SqlSessionTemplate.java:294)
at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:62)
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59)
at com.sun.proxy.$Proxy43.updateLimits(Unknown Source)
at pl.raiffeisen.ekd.blik.core.persistence.DataProvider.updateLimits(DataProvider.java:76)
at pl.raiffeisen.ekd.blik.api.rest.settings.SettingsController.updateLimits(SettingsController.java:136)
at pl.raiffeisen.ekd.blik.test.rest.SettingsControllerTest.testUpdateLimitsSuccessPath(SettingsControllerTest.java:532)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:252)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94)
at org.junit.runners.ParentRunner.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access[=12=]0(ParentRunner.java:58)
at org.junit.runners.ParentRunner.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: org.apache.ibatis.type.TypeException: Could not set parameters for mapping: ParameterMapping{property='__frch_item_1.dailyAmount', mode=IN, javaType=class java.math.BigDecimal, jdbcType=null, numericScale=null, resultMapId='null', jdbcTypeName='null', expression='null'}. Cause: org.apache.ibatis.type.TypeException: Error setting non null for parameter #5 with JdbcType null . Try setting a different JdbcType for this parameter or a different configuration property. Cause: org.h2.jdbc.JdbcSQLException: Invalid value "5" for parameter "parameterIndex" [90008-196]
at org.apache.ibatis.scripting.defaults.DefaultParameterHandler.setParameters(DefaultParameterHandler.java:89)
at org.apache.ibatis.executor.statement.PreparedStatementHandler.parameterize(PreparedStatementHandler.java:93)
at org.apache.ibatis.executor.statement.RoutingStatementHandler.parameterize(RoutingStatementHandler.java:64)
at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:86)
at org.apache.ibatis.executor.SimpleExecutor.doUpdate(SimpleExecutor.java:49)
at org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:117)
at org.apache.ibatis.executor.CachingExecutor.update(CachingExecutor.java:76)
at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:198)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433)
... 38 more
Caused by: org.apache.ibatis.type.TypeException: Error setting non null for parameter #5 with JdbcType null . Try setting a different JdbcType for this parameter or a different configuration property. Cause: org.h2.jdbc.JdbcSQLException: Invalid value "5" for parameter "parameterIndex" [90008-196]
at org.apache.ibatis.type.BaseTypeHandler.setParameter(BaseTypeHandler.java:55)
at org.apache.ibatis.scripting.defaults.DefaultParameterHandler.setParameters(DefaultParameterHandler.java:87)
... 50 more
Caused by: org.h2.jdbc.JdbcSQLException: Invalid value "5" for parameter "parameterIndex" [90008-196]
at org.h2.message.DbException.getJdbcSQLException(DbException.java:345)
at org.h2.message.DbException.get(DbException.java:179)
at org.h2.message.DbException.getInvalidValueException(DbException.java:228)
at org.h2.jdbc.JdbcPreparedStatement.setParameter(JdbcPreparedStatement.java:1444)
at org.h2.jdbc.JdbcPreparedStatement.setBigDecimal(JdbcPreparedStatement.java:384)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.ibatis.logging.jdbc.PreparedStatementLogger.invoke(PreparedStatementLogger.java:67)
at com.sun.proxy.$Proxy58.setBigDecimal(Unknown Source)
at org.apache.ibatis.type.BigDecimalTypeHandler.setNonNullParameter(BigDecimalTypeHandler.java:32)
at org.apache.ibatis.type.BigDecimalTypeHandler.setNonNullParameter(BigDecimalTypeHandler.java:27)
at org.apache.ibatis.type.BaseTypeHandler.setParameter(BaseTypeHandler.java:53)
... 51 more
调试后我看到了这个：（在：org.h2.jdbc.JdbcPreparedStatement:1002）
this = prep19: UPDATE some_table SET field_x=?, field_y=? WHERE field_z=? AND field_a=? ;
UPDATE transaction_limit SET field_x=?, field_y=? WHERE field_z=? AND field_a=? ;
UPDATE transaction_limit SET field_x=?, field_y=? WHERE field_z=? AND type=? ;
{1: 250.00, 2: 1, 3: 'qwerty123', 4: 'VALUE1'}
应该是这样的：（示例值）
{1: 250.00, 2: 1, 3: 'qwerty123', 4: 'VALUE1',
5: 750.00, 6: 4, 7: 'qwerty123', 8: 'VALUE2',
9: 500.00, 10: 3, 11: 'qwerty123', 12: 'VALUE3'}
谁能告诉我为什么只有一个对象从列表映射而不是所有三个（将 3 元素列表传递给方法）？
我已经解决了这个问题。数据库 H2 显然不支持 foreach 脚本。使用 PostgreSQL 一切正常。