实例化servlet类时出错

时间:2014-11-06 00:16:31

标签: java servlets web.xml

这是我的index.html

<form action="submitForm" method="get"> <input type="submit" name="Submit" value="submit" onclick="" /> </form>

这是我的web.xml

`<servlet>
<servlet-name>submitForm</servlet-name>
<servlet-class>student.StudentSurveyFormSubmit</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>submitForm</servlet-name>
<url-pattern>/submitForm</url-pattern>
</servlet-mapping>`

我的servlet类

package student; @WebServlet("/StudentSurveyFormSubmit") public class StudentSurveyFormSubmit extends HttpServlet { protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html"); PrintWriter out = response.getWriter(); out.println("<h1>" + "Hi, "+request.getParameter("firstName") +" I am here" + "</h1>"); }}

每当我部署war文件并单击sumbot按钮时,我会得到一个例外:

服务器遇到内部错误(),导致无法完成此请求。

例外

javax.servlet.ServletException:实例化servlet类student.StudentSurveyFormSubmit时出错     org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153)     org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)     org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368)     org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877)     org.apache.coyote.http11.Http11Protocol $ Http11ConnectionHandler.process(Http11Protocol.java:671)     org.apache.tomcat.util.net.JIoEndpoint $ Worker.run(JIoEndpoint.java:930)     java.lang.Thread.run(未知来源)

我哪里错了?

1 个答案:

答案 0 :(得分:1)

如果使用web.xml定义servlet,则删除@WebServlet注释,因为现在有2个不同的映射。