spring+mybatis+mysql 整合后批量插入问题

旅行_chenxi 2016-11-07 05:02:05
1.我希望[u]实现一个类似QQ这样的分组[/color]

//2. 实体类
public class Group{
private int groupId;
private String groupName;
private String myId;
List<Group> groupList
.......
构造器,get,set,toString==方法
}

//3. 映射接口
public interface GroupDao {
void newGroup(List<Group> groupList);
}

//4. mapper.xml
<mapper namespace="club.playguest.sns.dao.GroupDao">
<insert id="newGroup"
parameterType="java.util.List">
insert into group(groupName,myId)
values
<foreach collection="groupList" index="index" separator=",">
(#{groupName},#{myId})
</foreach>
</insert>
</mapper>

//5. juint测试
@Test
public void newGroup(){
GroupDao dao = ctx.getBean("groupDao",GroupDao.class);
Group group = new Group();
List<Group> groupList = new ArrayList<Group>();
for(int i = 1;i<=4;i++){
if(i==1){
group.setGroupName("家人");
group.setMyId("2686708173");
}else if(i==2){
group.setGroupName("朋友");
group.setMyId("2686708173");
}else if(i==3){
group.setGroupName("同学");
group.setMyId("2686708173");
}else{
group.setGroupName("同事");
group.setMyId("2686708173");
}
groupList.add(group);
}
dao.newGroup(groupList);
}
//6.测试错误
org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.binding.BindingException: Parameter 'groupList' not found. Available parameters are [list]
at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:75)
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:371)
at com.sun.proxy.$Proxy7.insert(Unknown Source)
at org.mybatis.spring.SqlSessionTemplate.insert(SqlSessionTemplate.java:240)
at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:79)
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:40)
at com.sun.proxy.$Proxy8.newGroup(Unknown Source)
at club.playguest.sns.test.TestCase.newGroup(TestCase.java:66)
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$1.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.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: org.apache.ibatis.binding.BindingException: Parameter 'groupList' not found. Available parameters are [list]
at org.apache.ibatis.session.defaults.DefaultSqlSession$StrictMap.get(DefaultSqlSession.java:254)
at org.apache.ibatis.builder.xml.dynamic.DynamicContext$ContextAccessor.getProperty(DynamicContext.java:114)
at org.apache.ibatis.ognl.OgnlRuntime.getProperty(OgnlRuntime.java:1657)
at org.apache.ibatis.ognl.ASTProperty.getValueBody(ASTProperty.java:92)
at org.apache.ibatis.ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at org.apache.ibatis.ognl.SimpleNode.getValue(SimpleNode.java:210)
at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:333)
at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:413)
at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:395)
at org.apache.ibatis.builder.xml.dynamic.OgnlCache.getValue(OgnlCache.java:42)
at org.apache.ibatis.builder.xml.dynamic.ExpressionEvaluator.evaluateIterable(ExpressionEvaluator.java:43)
at org.apache.ibatis.builder.xml.dynamic.ForEachSqlNode.apply(ForEachSqlNode.java:51)
at org.apache.ibatis.builder.xml.dynamic.MixedSqlNode.apply(MixedSqlNode.java:29)
at org.apache.ibatis.builder.xml.dynamic.DynamicSqlSource.getBoundSql(DynamicSqlSource.java:37)
at org.apache.ibatis.mapping.MappedStatement.getBoundSql(MappedStatement.java:241)
at org.apache.ibatis.executor.statement.BaseStatementHandler.<init>(BaseStatementHandler.java:61)
at org.apache.ibatis.executor.statement.PreparedStatementHandler.<init>(PreparedStatementHandler.java:36)
at org.apache.ibatis.executor.statement.RoutingStatementHandler.<init>(RoutingStatementHandler.java:42)
at org.apache.ibatis.session.Configuration.newStatementHandler(Configuration.java:348)
at org.apache.ibatis.executor.SimpleExecutor.doUpdate(SimpleExecutor.java:43)
at org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:108)
at org.apache.ibatis.executor.CachingExecutor.update(CachingExecutor.java:75)
at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:145)
at org.apache.ibatis.session.defaults.DefaultSqlSession.insert(DefaultSqlSession.java:134)
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:358)
... 30 more
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蹦蹦蹦哧 2018-01-11
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<foreach collection="groupList" item="group" index="index" separator=","> (#{group.groupName},#{group.myId}) </foreach>
sinet_non 2017-11-19
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你查下#和$的区别。。。。
旅行_chenxi 2016-11-07
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org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error updating database. Cause: java.lang.NullPointerException ### Cause: java.lang.NullPointerException at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:75) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:371) at com.sun.proxy.$Proxy7.insert(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.insert(SqlSessionTemplate.java:240) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:79) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:40) at com.sun.proxy.$Proxy8.newGroup(Unknown Source) at club.playguest.sns.test.TestCase.newGroup(TestCase.java:63) 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$1.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.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192) Caused by: org.apache.ibatis.exceptions.PersistenceException: ### Error updating database. Cause: java.lang.NullPointerException ### Cause: java.lang.NullPointerException at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:23) at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:147) at org.apache.ibatis.session.defaults.DefaultSqlSession.insert(DefaultSqlSession.java:134) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:358) ... 30 more Caused by: java.lang.NullPointerException at java.util.regex.Pattern.<init>(Pattern.java:1350) at java.util.regex.Pattern.compile(Pattern.java:1028) at java.lang.String.replaceFirst(String.java:2178) at org.apache.ibatis.builder.xml.dynamic.ForEachSqlNode$FilteredDynamicContext$1.handleToken(ForEachSqlNode.java:134) at org.apache.ibatis.parsing.GenericTokenParser.parse(GenericTokenParser.java:47) at org.apache.ibatis.builder.xml.dynamic.ForEachSqlNode$FilteredDynamicContext.appendSql(ForEachSqlNode.java:139) at org.apache.ibatis.builder.xml.dynamic.TextSqlNode.apply(TextSqlNode.java:34) at org.apache.ibatis.builder.xml.dynamic.MixedSqlNode.apply(MixedSqlNode.java:29) at org.apache.ibatis.builder.xml.dynamic.ForEachSqlNode.apply(ForEachSqlNode.java:69) at org.apache.ibatis.builder.xml.dynamic.MixedSqlNode.apply(MixedSqlNode.java:29) at org.apache.ibatis.builder.xml.dynamic.DynamicSqlSource.getBoundSql(DynamicSqlSource.java:37) at org.apache.ibatis.mapping.MappedStatement.getBoundSql(MappedStatement.java:241) at org.apache.ibatis.executor.statement.BaseStatementHandler.<init>(BaseStatementHandler.java:61) at org.apache.ibatis.executor.statement.PreparedStatementHandler.<init>(PreparedStatementHandler.java:36) at org.apache.ibatis.executor.statement.RoutingStatementHandler.<init>(RoutingStatementHandler.java:42) at org.apache.ibatis.session.Configuration.newStatementHandler(Configuration.java:348) at org.apache.ibatis.executor.SimpleExecutor.doUpdate(SimpleExecutor.java:43) at org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:108) at org.apache.ibatis.executor.CachingExecutor.update(CachingExecutor.java:75) at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:145) ... 36 more
逝_去_的_光_阴 2016-11-07
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void newGroup(@Param(value="groupList") List<Group> groupList);
试试注解注入呢
逝_去_的_光_阴 2016-11-07
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只有接口没有实现吗？那怎么识别参数
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