启动项目报错:Error creating bean with name 'sqlSessionFactory' defined in class path resource [applicationContext.xml]:Invocation of init method failed

1.Error creating bean with name ‘sqlSessionFactory‘ defined in class path resource [applicationContext.xml]:Invocation of init method failed

2.错误 [main] - 将映射器“interface com.spring.mapper.UserMapper”添加到配置时出错。

Error parsing Mapper XML. The XML location is ‘com/spring/mapper/UserMapper.xml‘. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias

解决:mapper.xml文件传入参数的类型或者返回值类型是User类型时，要具体到包名.User，包名要写对

<mapper namespace="com.spring.mapper.UserMapper">
　　<insert id="addUser" parameterType="com.spring.pol.User">
　　　　insert into user(id,name,password,email,birthday)
　　　　value(#{id},#{name},#{password},#{email},#{birthday})
　　</insert>

　　<select id="findUser" parameterType="String"
　　　　resultType="com.spring.pol.User">
　　　　select * from user
　　　　where username = #{username}
　　　　and password = #{password}
　　</select>

　　<select id="findUserByName" parameterType="String"
　　　　resultType="com.spring.pol.User">
　　　　select * from user
　　　　where username = #{username}
　　</select>

</mapper>

3. Error while adding the mapper ‘interface com.spring.mapper.BookMapper‘ to configuration.

BookMapper映射文件还没写，先删掉。。

启动项目报错:Error creating bean with name 'sqlSessionFactory' defined in class path resource [applicationContext.xml]:Invocation of init method failed

原文：https://www.cnblogs.com/xingzhixing/p/15048790.html