Caused by: java.lang.IllegalArgumentException: Parameter Maps collection does not contain value for com.bj186.crm.mapper.UserMapper.Integer

2022-09-13 14:01:44

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>

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