BeanUtils.populate No bean specified

最新推荐文章于 2022-04-15 20:21:08 发布

aspdao

最新推荐文章于 2022-04-15 20:21:08 发布

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文章标签： bean user server

本文分析了一个在使用Struts框架时出现的内部错误，详细解释了javax.servlet.ServletException异常的产生原因，特别是BeanUtils.populate方法引发的问题，并给出了相应的解决建议。

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ype Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: BeanUtils.populate
 org.apache.struts.util.RequestUtils.populate(RequestUtils.java:495)
 org.apache.struts.action.RequestProcessor.processPopulate(RequestProcessor.java:816)
 org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:203)
 org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
 org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
 com.util.common.EncodingFilter.doFilter(EncodingFilter.java:38)

root cause

java.lang.IllegalArgumentException: No bean specified
 org.apache.commons.beanutils.PropertyUtilsBean.getPropertyDescriptor(PropertyUtilsBean.java:751)
 org.apache.commons.beanutils.BeanUtilsBean.setProperty(BeanUtilsBean.java:937)
 org.apache.commons.beanutils.BeanUtilsBean.populate(BeanUtilsBean.java:811)
 org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:298)
 org.apache.struts.util.RequestUtils.populate(RequestUtils.java:493)
 org.apache.struts.action.RequestProcessor.processPopulate(RequestProcessor.java:816)
 org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:203)
 org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
 org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
 com.util.common.EncodingFilter.doFilter(EncodingFilter.java:38)

不能保存外键！！！！找不到相对应得formbean！但是formbean中有对应得类！

private User item;

应该改为：private User item = new User();