解决——》MyBatisSystemException: nested exception is org.apache.ibatis.binding.BindingException

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https://blog.csdn.net/weixin_43453386/article/details/84587865

tion: nested exception is org.apache.ibatis.binding.BindingException: Parameter ‘list’ not found. Available parameters are [item, param1] )

1、操作

批量更新

2、现象（错误信息）

org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.binding.BindingException: Parameter 'list' not found. Available parameters are [item, param1]

	at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:77)
	at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:446)
	at com.sun.proxy.$Proxy113.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.$Proxy193.batchUpdate(Unknown Source)
	at com.ejudata.platform.service.imp.CommunityFenceDataServiceImp.check(CommunityFenceDataServiceImp.java:106)
	at com.ejudata.platform.service.imp.CommunityFenceDataServiceImp.communityFenceDataCheck(CommunityFenceDataServiceImp.java:65)
	at com.ejudata.platform.test.TestCommunityFenceCheck.communityFence(TestCommunityFenceCheck.java:50)
	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.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: org.apache.ibatis.binding.BindingException: Parameter 'list' not found. Available parameters are [item, param1]
	at org.apache.ibatis.binding.MapperMethod$ParamMap.get(MapperMethod.java:202)
	at org.apache.ibatis.scripting.xmltags.DynamicContext$ContextAccessor.getProperty(DynamicContext.java:115)
	at org.apache.ibatis.ognl.OgnlRuntime.getProperty(OgnlRuntime.java:2666)
	at org.apache.ibatis.ognl.ASTProperty.getValueBody(ASTProperty.java:114)
	at org.apache.ibatis.ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)
	at org.apache.ibatis.ognl.SimpleNode.getValue(SimpleNode.java:258)
	at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:470)
	at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:434)
	at org.apache.ibatis.scripting.xmltags.OgnlCache.getValue(OgnlCache.java:44)
	at org.apache.ibatis.scripting.xmltags.ExpressionEvaluator.evaluateIterable(ExpressionEvaluator.java:43)
	at org.apache.ibatis.scripting.xmltags.ForEachSqlNode.apply(ForEachSqlNode.java:55)
	at org.apache.ibatis.scripting.xmltags.MixedSqlNode.apply(MixedSqlNode.java:33)
	at org.apache.ibatis.scripting.xmltags.DynamicSqlSource.getBoundSql(DynamicSqlSource.java:41)
	at org.apache.ibatis.mapping.MappedStatement.getBoundSql(MappedStatement.java:292)
	at org.apache.ibatis.executor.statement.BaseStatementHandler.<init>(BaseStatementHandler.java:64)
	at org.apache.ibatis.executor.statement.PreparedStatementHandler.<init>(PreparedStatementHandler.java:40)
	at org.apache.ibatis.executor.statement.RoutingStatementHandler.<init>(RoutingStatementHandler.java:46)
	at org.apache.ibatis.session.Configuration.newStatementHandler(Configuration.java:545)
	at org.apache.ibatis.executor.SimpleExecutor.doUpdate(SimpleExecutor.java:48)
	at org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:117)
	at org.apache.ibatis.executor.CachingExecutor.update(CachingExecutor.java:76)
	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.plugin.Plugin.invoke(Plugin.java:63)
	at com.sun.proxy.$Proxy215.update(Unknown Source)
	at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:198)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433)
	... 36 more

3、原因

Mapper.java 和 Mapper.xml的传递的参数没有对应上


Mapper.java中的传递参数为item
Mapper.xml中使用的参数为list

1）以下为解决错误之前的代码：

• Mapper.java

    int batchUpdate(@Param("item") List<T> list);

• Mapper.xml

  <update id="batchUpdate">
    <foreach collection="list" index="index" item="item" open="" separator=";" close="">
        update community_fence_data set id = #{item.id}
        <if test="null != item.key1"> ,key1 = #{item.key1}if>
        <if test="null != item.key2"> ,key2 = #{item.key2}if>
        <if test="null != item.result"> ,result = #{item.result}if>
        <if test="null != item.gaodeFence"> ,gaode_fence = #{item.gaodeFence}if>
        where id = #{item.id}
	foreach>
  update>

2）Mybatis中foreach的属性

属性	描述
item	循环体中的具体对象。支持属性的点路径访问，如item.age,item.info.details。 具体说明：在list和数组中是其中的对象，在map中是value。 该参数为必选。
collection	要做foreach的对象，作为入参时，List对象默认用list代替作为键，数组对象有array代替作为键，Map对象用map代替作为键。 当然在作为入参时可以使用@Param(“keyName”)来设置键，设置keyName后，list,array,map将会失效。 除了入参这种情况外，还有一种作为参数对象的某个字段的时候。举个例子： 如果User有属性List ids。入参是User对象，那么这个collection = “ids” 如果User有属性Ids ids;其中Ids是个对象，Ids有个属性List id;入参是User对象，那么collection = “ids.id” 上面只是举例，具体collection等于什么，就看你想对那个元素做循环。 该参数为必选。
separator	元素之间的分隔符，例如在in()的时候，separator=","会自动在元素中间用“,“隔开，避免手动输入逗号导致sql错误，如in(1,2,)这样。该参数可选。
open	foreach代码的开始符号，一般是(和close=")"合用。常用在in(),values()时。该参数可选。
close	foreach代码的关闭符号，一般是)和open="("合用。常用在in(),values()时。该参数可选。
index	在list和数组中,index是元素的序号，在map中，index是元素的key，该参数可选。

4、解决

Mapper.java 和 Mapper.xml的传递的参数对应上

1) 方案一：Mapper.java不调整，Mapper.xml调整

• Mapper.java

    int batchUpdate(@Param("item") List<T> list);

• Mapper.xml

  <update id="batchUpdate">
    <foreach collection="item" index="index" item="item" open="" separator=";" close="">
        update community_fence_data set id = #{item.id}
        <if test="null != item.key1"> ,key1 = #{item.key1}if>
        <if test="null != item.key2"> ,key2 = #{item.key2}if>
        <if test="null != item.result"> ,result = #{item.result}if>
        <if test="null != item.gaodeFence"> ,gaode_fence = #{item.gaodeFence}if>
        where id = #{item.id}
	foreach>
  update>

2) 方案二：Mapper.java调整，Mapper.xml不调整

• Mapper.java

    int batchUpdate(@Param("list") List<T> list);

• Mapper.xml

  <update id="batchUpdate">
    <foreach collection="list" index="index" item="item" open="" separator=";" close="">
        update community_fence_data set id = #{item.id}
        <if test="null != item.key1"> ,key1 = #{item.key1}if>
        <if test="null != item.key2"> ,key2 = #{item.key2}if>
        <if test="null != item.result"> ,result = #{item.result}if>
        <if test="null != item.gaodeFence"> ,gaode_fence = #{item.gaodeFence}if>
        where id = #{item.id}
	foreach>
  update>