XML文件存在中文注释报错问题（ 3 字节的 UTF-8 序列的字节 3 无效）
今天在做mybatis项目的时候，给映射文件添加了中文注释后，程序就报错。把中文注释删除后，程序又可以正常执行。解决方法在下文提到。
我的xml映射文件如下：
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.orggetStudent//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.kuang.dao.StudentMapper"> <!--方式一--> <select id="getStudent" resultMap="StudentTeacher"> SELECT * FROM student </select> <select id="getTeacher" resultType="Teacher"> SELECT * FROM teacher where id = #{tid} </select> <resultMap id="StudentTeacher" type="Student"> <result property="id" column="id"/> <result property="name" column="name"/> <association property="teacher" column="tid" javaType="Teacher" select="getTeacher"/> </resultMap> <!--方式二--> <select id="getStudent2" resultMap="StudentTeacher2"> SELECT s.id sid,s.name sname,t.name tname FROM student s,teacher t WHERE s.tid = t.id </select> <resultMap id="StudentTeacher2" type="Student"> <result property="id" column="sid"/> <result property="name" column="sname"/> <association property="teacher" javaType="Teacher"> <result property="name" column="tname"/> </association> </resultMap> </mapper>
报错信息如下：
Logging initialized using 'class org.apache.ibatis.logging.stdout.StdOutImpl' adapter. Class not found: org.jboss.vfs.VFS JBoss 6 VFS API is not available in this environment. Class not found: org.jboss.vfs.VirtualFile VFS implementation org.apache.ibatis.io.JBoss6VFS is not valid in this environment. Using VFS adapter org.apache.ibatis.io.DefaultVFS Find JAR URL: file:/D:/IdeaProjects/Mybatis-Study/mybatis-06/target/classes/com/kuang/pojo Not a JAR: file:/D:/IdeaProjects/Mybatis-Study/mybatis-06/target/classes/com/kuang/pojo Reader entry: Student.class Reader entry: Teacher.class Listing file:/D:/IdeaProjects/Mybatis-Study/mybatis-06/target/classes/com/kuang/pojo Find JAR URL: file:/D:/IdeaProjects/Mybatis-Study/mybatis-06/target/classes/com/kuang/pojo/Student.class Not a JAR: file:/D:/IdeaProjects/Mybatis-Study/mybatis-06/target/classes/com/kuang/pojo/Student.class Reader entry: ���� 1 [ Find JAR URL: file:/D:/IdeaProjects/Mybatis-Study/mybatis-06/target/classes/com/kuang/pojo/Teacher.class Not a JAR: file:/D:/IdeaProjects/Mybatis-Study/mybatis-06/target/classes/com/kuang/pojo/Teacher.class Reader entry: ���� 1 I Checking to see if class com.kuang.pojo.Student matches criteria [is assignable to Object] Checking to see if class com.kuang.pojo.Teacher matches criteria [is assignable to Object] 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 MyTest.getStudent(MyTest.java:14) 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$2.evaluate(ParentRunner.java:268) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.junit.runner.JUnitCore.run(JUnitCore.java:137) at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68) at com.intellij.rt.execution.junit.IdeaTestRunner$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.exceptions.PersistenceException: ### Error building SqlSession. ### The error may exist in com/kuang/dao/StudentMapper.java (best guess) ### Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: com.sun.org.apache.xerces.internal.impl.io.MalformedByteSequenceException: 3 字节的 UTF-8 序列的字节 3 无效。 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.<clinit>(MybatisUtils.java:19) ... 23 more Caused by: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: com.sun.org.apache.xerces.internal.impl.io.MalformedByteSequenceException: 3 字节的 UTF-8 序列的字节 3 无效。 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) ... 25 more Caused by: org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: com.sun.org.apache.xerces.internal.impl.io.MalformedByteSequenceException: 3 字节的 UTF-8 序列的字节 3 无效。 at org.apache.ibatis.parsing.XPathParser.createDocument(XPathParser.java:260) at org.apache.ibatis.parsing.XPathParser.<init>(XPathParser.java:126) at org.apache.ibatis.builder.xml.XMLMapperBuilder.<init>(XMLMapperBuilder.java:80) at org.apache.ibatis.builder.xml.XMLMapperBuilder.<init>(XMLMapperBuilder.java:75) at org.apache.ibatis.builder.annotation.MapperAnnotationBuilder.loadXmlResource(MapperAnnotationBuilder.java:181) 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) ... 27 more Caused by: com.sun.org.apache.xerces.internal.impl.io.MalformedByteSequenceException: 3 字节的 UTF-8 序列的字节 3 无效。 at com.sun.org.apache.xerces.internal.impl.io.UTF8Reader.invalidByte(UTF8Reader.java:701) at com.sun.org.apache.xerces.internal.impl.io.UTF8Reader.read(UTF8Reader.java:435) at com.sun.org.apache.xerces.internal.impl.XMLEntityScanner.load(XMLEntityScanner.java:1895) at com.sun.org.apache.xerces.internal.impl.XMLEntityScanner.scanData(XMLEntityScanner.java:1375) at com.sun.org.apache.xerces.internal.impl.XMLScanner.scanComment(XMLScanner.java:801) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanComment(XMLDocumentFragmentScannerImpl.java:1034) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2982) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:602) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:505) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:841) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:770) at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141) at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:243) at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:339) at org.apache.ibatis.parsing.XPathParser.createDocument(XPathParser.java:258) ... 36 more
上网上找了很多解决方案，最终找到解决方法：
就是把文件头部的编码由UTF-8改为GBK编码，修改完后程序就能正常运行了！
