Question

严重: Servlet.service() for servlet jsp threw exception

严重: Servlet.service() for servlet jsp threw exception
java.lang.NullPointerException
at com.opensymphony.xwork2.util.TextParseUtil.translateVariables(TextParseUtil.java:168)
at com.opensymphony.xwork2.util.TextParseUtil.translateVariables(TextParseUtil.java:115)
at com.opensymphony.xwork2.util.TextParseUtil.translateVariables(TextParseUtil.java:88)
at org.apache.struts2.components.Component.findValue(Component.java:378)
at org.apache.struts2.components.Component.findString(Component.java:200)
at org.apache.struts2.components.Param.end(Param.java:108)
at org.apache.struts2.views.jsp.ComponentTagSupport.doEndTag(ComponentTagSupport.java:42)
at org.apache.jsp.jsp.oa.document.page_jsp._jspx_meth_s_005fparam_005f0(page_jsp.java:846)
at org.apache.jsp.jsp.oa.document.page_jsp._jspx_meth_s_005fiterator_005f1(page_jsp.java:660)
at org.apache.jsp.jsp.oa.document.page_jsp._jspService(page_jsp.java:159)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)

Answer 1

你在JSP页面中传出的值，servlet中没有接到，出现空指针，可能是你页面的名字跟你servlet中接受的名字不一致，或者其他地方写错了，或者你页面的值本身就是空的。

Answer 2

()Servlet.service servlet jsp扔例外
java.lang.NullPointerException
在com.opensymphony.xwork2.util.TextParseUtil.translateVariables(TextParseUtil.java:168)
在com.opensymphony.xwork2.util.TextParseUtil.translateVariables(TextParseUtil.java:115)
在com.opensymphony.xwork2.util.TextParseUtil.translateVariables(TextParseUtil.java:88)
在org.apache.struts2.components.Component.findValue(Component.java:378)
在org.apache.struts2.components.Component.findString(Component.java:200)
在

Answer 3

一般是配置文件错了！

Answer 4

你传了个空对象，你看看你在spring配置文件里配置的struts2的过滤器是否配上了！