出现javax.servlet.ServletException: BeanUtils.populate异常

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exception

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:709) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) com.contract.util.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:37)

root cause

java.lang.IllegalArgumentException: argument type mismatch sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) java.lang.reflect.Method.invoke(Method.java:585) org.apache.commons.beanutils.PropertyUtils.setSimpleProperty(PropertyUtils.java:1789) org.apache.commons.beanutils.PropertyUtils.setNestedProperty(PropertyUtils.java:1684) org.apache.commons.beanutils.PropertyUtils.setProperty(PropertyUtils.java:1713) org.apache.commons.beanutils.BeanUtils.setProperty(BeanUtils.java:1019) org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:808) 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:709) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) com.contract.util.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:37) 是数据库中某字段的类型与表单中的string类型不匹配。（表单中要用string类型）

例如，如果你的数据库中的字符类型是date，在读取这个数据时需要用到格式转换，可以用DateFormat的format方法

 String str_date = DateFormat.getDateInstance.format(date);

转自：http://blog.csdn.net/qpyong/article/details/2439444