java.lang.IllegalArgumentException: No bean specified和javax.servlet.ServletExcep

最新推荐文章于 2021-04-13 21:01:32 发布

原创最新推荐文章于 2021-04-13 21:01:32 发布 · 171 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#Bean #Java #Servlet #Struts #Apache

异常备忘专栏收录该内容

8 篇文章

订阅专栏

本文介绍了一个关于Struts框架中使用BeanUtils.populate方法时出现的异常问题及解决办法。异常原因是未初始化Bean实例导致无法正确设置属性，通过提前初始化Bean解决了此问题。

public class SmUserPagePropBean extends BcmsBean {

private SmUserPagePropModel smUserPagePropModel;

省略set和get方法

}

异常:

javax.servlet.ServletException: BeanUtils.populate
	org.apache.struts.util.RequestUtils.populate(RequestUtils.java:1254)
	org.apache.struts.action.RequestProcessor.processPopulate(RequestProcessor.java:821)
	org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:254)
	org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
	org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	com.icfcc.core.web.filter.EncodingFilter.doFilter(EncodingFilter.java:35)
	org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

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:1252)
	org.apache.struts.action.RequestProcessor.processPopulate(RequestProcessor.java:821)
	org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:254)
	org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
	org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	com.icfcc.core.web.filter.EncodingFilter.doFilter(EncodingFilter.java:35)
	org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
解决方法：

将private SmUserPagePropModel smUserPagePropModel;

改为

private SmUserPagePropModel smUserPagePropModel=new SmUserPagePropModel();