java.lang.ExceptionInInitializerError（异常初始化错误） |
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java.lang.ExceptionInInitializerError（异常初始化错误）
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D:\JAVA_JDK\jdk_8\bin\java.exe -ea -Didea.test.cyclic.buffer.size=1048576 "-javaagent:D:\IDEA\IntelliJ IDEA 2021.3\lib\idea_rt.jar=61343:D:\IDEA\IntelliJ IDEA 2021.3\bin" -Dfile.encoding=UTF-8 -classpath "D:\IDEA\IntelliJ IDEA 2021.3\lib\idea_rt.jar;D:\IDEA\IntelliJ IDEA 2021.3\plugins\junit\lib\junit5-rt.jar;D:\IDEA\IntelliJ IDEA 2021.3\plugins\junit\lib\junit-rt.jar;D:\JAVA_JDK\jdk_8\jre\lib\charsets.jar;D:\JAVA_JDK\jdk_8\jre\lib\deploy.jar;D:\JAVA_JDK\jdk_8\jre\lib\ext\access-bridge-64.jar;D:\JAVA_JDK\jdk_8\jre\lib\ext\cldrdata.jar;D:\JAVA_JDK\jdk_8\jre\lib\ext\dnsns.jar;D:\JAVA_JDK\jdk_8\jre\lib\ext\jaccess.jar;D:\JAVA_JDK\jdk_8\jre\lib\ext\jfxrt.jar;D:\JAVA_JDK\jdk_8\jre\lib\ext\localedata.jar;D:\JAVA_JDK\jdk_8\jre\lib\ext\nashorn.jar;D:\JAVA_JDK\jdk_8\jre\lib\ext\sunec.jar;D:\JAVA_JDK\jdk_8\jre\lib\ext\sunjce_provider.jar;D:\JAVA_JDK\jdk_8\jre\lib\ext\sunmscapi.jar;D:\JAVA_JDK\jdk_8\jre\lib\ext\sunpkcs11.jar;D:\JAVA_JDK\jdk_8\jre\lib\ext\zipfs.jar;D:\JAVA_JDK\jdk_8\jre\lib\javaws.jar;D:\JAVA_JDK\jdk_8\jre\lib\jce.jar;D:\JAVA_JDK\jdk_8\jre\lib\jfr.jar;D:\JAVA_JDK\jdk_8\jre\lib\jfxswt.jar;D:\JAVA_JDK\jdk_8\jre\lib\jsse.jar;D:\JAVA_JDK\jdk_8\jre\lib\management-agent.jar;D:\JAVA_JDK\jdk_8\jre\lib\plugin.jar;D:\JAVA_JDK\jdk_8\jre\lib\resources.jar;D:\JAVA_JDK\jdk_8\jre\lib\rt.jar;E:\java（idea）项目\Mybatis3\mybatis-06\target\test-classes;E:\java（idea）项目\Mybatis3\mybatis-06\target\classes;E:\Environment\apache-maven-3.8.4\maven-repo\mysql\mysql-connector-java\8.0.11\mysql-connector-java-8.0.11.jar;E:\Environment\apache-maven-3.8.4\maven-repo\com\google\protobuf\protobuf-java\2.6.0\protobuf-java-2.6.0.jar;E:\Environment\apache-maven-3.8.4\maven-repo\org\mybatis\mybatis\3.5.2\mybatis-3.5.2.jar;E:\Environment\apache-maven-3.8.4\maven-repo\junit\junit\4.12\junit-4.12.jar;E:\Environment\apache-maven-3.8.4\maven-repo\org\hamcrest\hamcrest-core\1.3\hamcrest-core-1.3.jar;E:\Environment\apache-maven-3.8.4\maven-repo\org\projectlombok\lombok\1.18.22\lombok-1.18.22.jar" com.intellij.rt.junit.JUnitStarter -ideVersion5 -junit4 Test,testStudent
Logging initialized using 'class org.apache.ibatis.logging.stdout.StdOutImpl' adapter.
PooledDataSource forcefully closed/removed all connections.
PooledDataSource forcefully closed/removed all connections.
PooledDataSource forcefully closed/removed all connections.
PooledDataSource forcefully closed/removed all connections.
java.lang.ExceptionInInitializerError
at Test.testStudent(Test.java:20)
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.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$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69)
at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38)
at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11)
at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35)
at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:235)
at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54)
Caused by: org.apache.ibatis.exceptions.PersistenceException:
### Error building SqlSession.
### The error may exist in com/kuang/dao/StudentMapper.xml
### The error occurred while processing mapper_resultMap[StudentTeacher]
### Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'com/kuang/dao/StudentMapper.xml'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'Teacher'. Cause: java.lang.ClassNotFoundException: Cannot find class: Teacher
at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30)
at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:80)
at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:64)
at com.kuang.utils.MybatisUtils.(MybatisUtils.java:28)
... 25 more
Caused by: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'com/kuang/dao/StudentMapper.xml'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'Teacher'. Cause: java.lang.ClassNotFoundException: Cannot find class: Teacher
at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:121)
at org.apache.ibatis.builder.xml.XMLConfigBuilder.parse(XMLConfigBuilder.java:98)
at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:78)
... 27 more
Caused by: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'com/kuang/dao/StudentMapper.xml'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'Teacher'. Cause: java.lang.ClassNotFoundException: Cannot find class: Teacher
at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:122)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.parse(XMLMapperBuilder.java:94)
at org.apache.ibatis.builder.annotation.MapperAnnotationBuilder.loadXmlResource(MapperAnnotationBuilder.java:182)
at org.apache.ibatis.builder.annotation.MapperAnnotationBuilder.parse(MapperAnnotationBuilder.java:129)
at org.apache.ibatis.binding.MapperRegistry.addMapper(MapperRegistry.java:72)
at org.apache.ibatis.session.Configuration.addMapper(Configuration.java:775)
at org.apache.ibatis.builder.xml.XMLConfigBuilder.mapperElement(XMLConfigBuilder.java:382)
at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:119)
... 29 more
Caused by: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'Teacher'. Cause: java.lang.ClassNotFoundException: Cannot find class: Teacher
at org.apache.ibatis.builder.BaseBuilder.resolveClass(BaseBuilder.java:118)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.buildResultMappingFromContext(XMLMapperBuilder.java:390)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElement(XMLMapperBuilder.java:280)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElement(XMLMapperBuilder.java:253)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElements(XMLMapperBuilder.java:245)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:118)
... 36 more
Caused by: org.apache.ibatis.type.TypeException: Could not resolve type alias 'Teacher'. Cause: java.lang.ClassNotFoundException: Cannot find class: Teacher
at org.apache.ibatis.type.TypeAliasRegistry.resolveAlias(TypeAliasRegistry.java:120)
at org.apache.ibatis.builder.BaseBuilder.resolveAlias(BaseBuilder.java:149)
at org.apache.ibatis.builder.BaseBuilder.resolveClass(BaseBuilder.java:116)
... 41 more
Caused by: java.lang.ClassNotFoundException: Cannot find class: Teacher
at org.apache.ibatis.io.ClassLoaderWrapper.classForName(ClassLoaderWrapper.java:200)
at org.apache.ibatis.io.ClassLoaderWrapper.classForName(ClassLoaderWrapper.java:89)
at org.apache.ibatis.io.Resources.classForName(Resources.java:261)
at org.apache.ibatis.type.TypeAliasRegistry.resolveAlias(TypeAliasRegistry.java:116)
... 43 more
Process finished with exit code -1
以上是错误的所有代码，这是在学习mybatis中遇到的问题，原因就是没有将Teacher别名卸载配置文件中，部分代码如下： Could not resolve type alias 'Teacher'. Cause: java.lang.ClassNotFoundException: Cannot find class: Teacher
如上图可看出错误之处，如果不添加别名可以在配置文件中修改resultType类型，如下：
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