Question

spring+mybatis，tomcat启动异常

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation of init method failed; nested exception is org.springframework.core.NestedIOException: Failed to parse config resource: ServletContext resource [/WEB-INF/mybatis-config.xml]; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.NullPointerException
是映射文件的问题，在mybatis配置文件中去掉映射文件就没有问题
mapper文件：
<mapper>
<resultMap type="../org.gocom.crm.bean.Operator" id="operators">
<result property="userId" column="userid"/>
<result property="userName" column="operatorname"/>
<result property="password" column="password"/>
</resultMap>
<select id="queryOperator" resultType="operators">
<![CDATA[
select userid,operatorname,password from ac_operator where rownum<=10
]]>
</select>
</mapper>
我只写了Operator JavaBean没有其它定义任何类

Answer 1

还能 <resultMap type="../org.gocom.crm.bean.Operator" id="operators">
用 ../ 吗？

追问

如果我只保留mapper标签呢？

追答

你mapper 的 namespace 属性没写

追问

加上namespace没有问题了，不过这是为什么呢？我的理解namespace只是类似于包的作用。。求解释！