intellij Idea中maven项目target目录不存在mapper.xml文件

org.apache.ibatis.binding.BindingException: Invalid bound statement (NOT FOUND): com.ly.ssm.dao.UserMapper.insertUser

	AT org.apache.ibatis.binding.MapperMethod$SqlCommand.<init>(MapperMethod.java:178)
	AT org.apache.ibatis.binding.MapperMethod.<init>(MapperMethod.java:38)
	AT org.apache.ibatis.binding.MapperProxy.cachedMapperMethod(MapperProxy.java:49)
	AT org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:42)
	AT com.sun.proxy.$Proxy16.insertUser(UNKNOWN Source)
	AT com.ly.ssm.service.impl.UserServiceImpl.saveUser(UserServiceImpl.java:26)
	AT com.ly.ssm.service.impl.UserServiceImplTest.testSaveUser(UserServiceImplTest.java:37)
	AT sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	AT sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	AT sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	AT java.lang.reflect.Method.invoke(Method.java:606)
	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:74)
	AT org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:83)
	AT org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
	AT org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:233)
	AT org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:87)
	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$2.evaluate(ParentRunner.java:268)
	AT org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
	AT org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
	AT org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	AT org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:176)
	AT org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	AT com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	AT com.intellij.rt.execution.junit.IdeaTestRunner$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: Mapped Statements collection does NOT contain VALUE FOR com.ly.ssm.dao.UserMapper.insertUser
	AT org.apache.ibatis.session.Configuration$StrictMap.get(Configuration.java:768)
	AT org.apache.ibatis.session.Configuration.getMappedStatement(Configuration.java:603)
	AT org.apache.ibatis.session.Configuration.getMappedStatement(Configuration.java:596)
	AT org.apache.ibatis.binding.MapperMethod$SqlCommand.<init>(MapperMethod.java:176)
	... 33 more

报如上异常信息的前提已经狠仔细的检查过配置信息，扫描mapper.xml文件的配置，如果是classpath：后边目录路径不要含有 * 号，如果是classpath*：后边目录路径可以有 * 号。确定配置信息没有问题后，还报错就可能是如下的情况。

产生原因：mapper接口与mapper映射的xml文件没有匹配上，在intellij idea中target目录下边没有生成相应的mapper.xml，即找不到所以匹配不上。

解决方法：在pom.xml文件中添加如下代码

    <build>
        <finalName>ssmDemo</finalName>
        <!--解决intellijIdea构建项目时，target/class目录下不存在mapper.xml文件-->
        <resources>
            <resource>
                <directory>${basedir}/src/main/java</directory>
                <includes>
                    <include>**/*Mapper.xml</include>
                </includes>
            </resource>
        </resources>
    </build>

代码含义就是把src/main/java目录下所有的*Mapper.xml格式的xml文件在项目构建时都生成到target下边相应的目录里边，其中${basedir} 是MAVEN的内置变量，表示项目根目录。

同理，想包含其他格式文件，比如.properties文件，再加一个<include>标签即可。