【Java】Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException

写MyBatis时问题报错：

org.apache.ibatis.exceptions.PersistenceException: 
### Error building SqlSession.
### The error may exist in com/fzhiy/dao/StudentMapper.xml
### Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error creating document instance.  Cause: org.xml.sax.SAXParseException; lineNumber: 5; columnNumber: 10; 已经看到 doctype。
    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.fzhiy.util.SqlSessionFactoryUtil.getSqlSessionFactory(SqlSessionFactoryUtil.java:29)
    at com.fzhiy.util.SqlSessionFactoryUtil.openSession(SqlSessionFactoryUtil.java:19)
    at com.fzhiy.test.StudentTest.main(StudentTest.java:12)
Caused by: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error creating document instance.  Cause: org.xml.sax.SAXParseException; lineNumber: 5; columnNumber: 10; 已经看到 doctype。
    at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:120)
    at org.apache.ibatis.builder.xml.XMLConfigBuilder.parse(XMLConfigBuilder.java:98)
    at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:78)
    ... 4 more

原因：

MyBatis连接数据库的配置文件StudentMapper.xml和mybatis-config.xml复制时  dtd  未修改发生错误。

修改前配置文件如下：

StudentMapper.xml

	
	
		insert into t_student values(null,#{name},#{age})
	

mybatis-config.xml

修改后：

	
	
		insert into t_student values(null,#{name},#{age})