在使用SSM整合myBatis的过程中遇到了这个问题.
问题的原因: 把parameterType错误的写成了parameterMap
解决办法: 将parameterMap修改为parameterType, 问题解决!
原来的代码:
<select id="selectUserById2" parameterMap="Integer" resultMap="userMap">
select * from users where user_id = #{id}
</select>
正确的代码:
<select id="selectUserById2" parameterType="Integer" resultMap="userMap">
select * from users where user_id = #{id}
</select>
错误的信息:
org.apache.ibatis.builder.IncompleteElementException: Could not find parameter map com.bj186.crm.mapper.UserMapper.Integer
at org.apache.ibatis.builder.MapperBuilderAssistant.getStatementParameterMap(MapperBuilderAssistant.java:320)
at org.apache.ibatis.builder.MapperBuilderAssistant.addMappedStatement(MapperBuilderAssistant.java:296)
at org.apache.ibatis.builder.xml.XMLStatementBuilder.parseStatementNode(XMLStatementBuilder.java:109)
at org.apache.ibatis.session.Configuration.buildAllStatements(Configuration.java:788)
at org.apache.ibatis.session.Configuration.hasStatement(Configuration.java:758)
at org.apache.ibatis.session.Configuration.hasStatement(Configuration.java:753)
at org.apache.ibatis.binding.MapperMethod$SqlCommand.resolveMappedStatement(MapperMethod.java:249)
at org.apache.ibatis.binding.MapperMethod$SqlCommand.<init>(MapperMethod.java:219)
at org.apache.ibatis.binding.MapperMethod.<init>(MapperMethod.java:49)
at org.apache.ibatis.binding.MapperProxy.cachedMapperMethod(MapperProxy.java:65)
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:58)
at com.sun.proxy.$Proxy18.selectUserById2(Unknown Source)
at com.bj186.crm.test.TestDemo.test4(TestDemo.java:75)
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.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
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$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$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$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: java.lang.IllegalArgumentException: Parameter Maps collection does not contain value for com.bj186.crm.mapper.UserMapper.Integer
at org.apache.ibatis.session.Configuration$StrictMap.get(Configuration.java:888)
at org.apache.ibatis.session.Configuration.getParameterMap(Configuration.java:660)
at org.apache.ibatis.builder.MapperBuilderAssistant.getStatementParameterMap(MapperBuilderAssistant.java:318)
... 41 more
参考的resultMap代码:
<!-- 查询多条结果
通过resultMap建立实体中的字段成员和数据表中的字段之间的对应关系-->
<resultMap id="userMap" type="com.bj186.crm.entity.User">
<id property="uid" column="user_id"></id>
<result property="username" column="user_name"></result>
<result property="password" column="user_password"></result>
<result property="birthday" column="user_birthday"></result>
<result property="phoneNumber" column="user_phoneNumber"></result>
<result property="gender" column="user_gender"></result>
<result property="status" column="user_status"></result>
</resultMap>
原文：https://www.cnblogs.com/zjulanjian/p/10968741.html