nested exception is org.apache.ibatis.reflection.ReflectionException

最新推荐文章于 2025-10-17 17:23:35 发布

原创最新推荐文章于 2025-10-17 17:23:35 发布 · 3.4w 阅读

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本文详细解析了一个关于MyBatis框架中实体类属性映射的问题，具体表现为在尝试设置Paper实体类的paperId属性时出现异常，原因是实体类中不存在对应的setter方法。文章进一步探讨了此问题的根源在于实体类与mapper.xml文件中的get和set方法不对应，并建议同时检查jsp文件以避免拼写错误。

错误情况

Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.reflection.ReflectionException: Could not set property 'paperId' of 'class com.xiaobao.pojo.Paper' with value '1' Cause: org.apache.ibatis.reflection.ReflectionException: There is no setter for property named 'paperId' in 'class com.xiaobao.pojo.Paper'

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.reflection.ReflectionException: Could not set property 'paperId' of 'class com.xiaobao.pojo.Paper' with value '1' Cause: org.apache.ibatis.reflection.ReflectionException: There is no setter for property named 'paperId' in 'class com.xiaobao.pojo.Paper'
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:982)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

原因实体类与 mapper.xml 文件的get，set方法不对应顺便检查一下jsp文件以防写错字母