mybatis PersistenceException Mapper error - mybatis

Question

I don't know what is wrong.
Something is bad with mapper but everything looks good.
File UserMapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<mapper namespace="com.javacodegeeks.snippets.enterprise.UserMapper">
<select id="addUser" parameterType="int" resultType="com.javacodegeeks.snippets.enterprise.User">
insert into * from users where id = #{id}
</select>
<select id="getUser" parameterType="int" resultType="com.javacodegeeks.snippets.enterprise.User">
select * from com.javacodegeeks.snippets.enterprise.User where id = #{id}
</select>
</mapper>
I get this Error:
Exception in thread "main" org.apache.ibatis.exceptions.PersistenceException:
### Error building SqlSession.
### The error may exist in UserMapper.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: 2; columnNumber: 70; Document root element "mapper", must match DOCTYPE root "null".
at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:23)
at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:51)
at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:35)
at Main.do1(Main.java:105)
at Main.main(Main.java:124)
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 com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)
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: 2; columnNumber: 70; Document root element "mapper", must match DOCTYPE root "null".

Answer 1

You can use following doc type. However I find some discrepancy in the code you have copied. Are you sure of INSERT and SELECT statements. I hope its copy mistake
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.javacodegeeks.snippets.enterprise.UserMapper">
<select id="addUser" parameterType="int" resultType="com.javacodegeeks.snippets.enterprise.User">
insert into * from users where id = #{id}
</select>
<select id="getUser" parameterType="int" resultType="com.javacodegeeks.snippets.enterprise.User">
select * from com.javacodegeeks.snippets.enterprise.User where id = #{id}
</select>
</mapper>