servlet中的重定向和请求分派

《servlet中的重定向和请求分派》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、1.重定向　　　　在Servlet中的接口HttpServletRequest提供了sendRedirect()方法用于生成302相应码和Location响应头，从而通知客户端去重新访问Location响应头指定的URL，其定义如下：　　　　publicvoidsendRedirect(Stringlocation)throwsIOException;对于sendRedirect()方法不仅可以重定向到当前应用程序中的其他资源，也可重定向到一个容器中的其他应用程序中的资源。　　eg://Servlet1.javapackagecom.

2、lkh.redrect;importjava.io.IOException;importjavax.servlet.RequestDispatcher;importjavax.servlet.ServletException;importjavax.servlet.http.HttpServlet;importjavax.servlet.http.HttpServletRequest;importjavax.servlet.http.HttpServletResponse;publicclassServlet1extendsHttpS

3、ervlet{@OverrideprotectedvoiddoGet(HttpServletRequestrequest,HttpServletResponseresponse)throwsServletException,IOException{//TODOAuto-generatedmethodstubthis.doPost(request,response);}@OverrideprotectedvoiddoPost(HttpServletRequestrequest,HttpServletResponseresponse)th

4、rowsServletException,IOException{//TODOAuto-generatedmethodstubresponse.sendRedirect("Servlet2");//重定向到指定路径的资源//RequestDispatcherdis=request.getRequestDispatcher("Servlet2");//dis.forward(request,response);}}//Servlet2.javapackagecom.lkh.redrect;importjava.io.IOExceptio

5、n;importjava.io.PrintWriter;importjavax.servlet.ServletException;importjavax.servlet.http.HttpServlet;importjavax.servlet.http.HttpServletRequest;importjavax.servlet.http.HttpServletResponse;publicclassServlet2extendsHttpServlet{@OverrideprotectedvoiddoGet(HttpServletRe

6、questrequest,HttpServletResponseresponse)throwsServletException,IOException{//TODOAuto-generatedmethodstubthis.doPost(request,response);}@OverrideprotectedvoiddoPost(HttpServletRequestrequest,HttpServletResponseresponse)throwsServletException,IOException{//TODOAuto-gene

7、ratedmethodstubresponse.setContentType("text/html;charset=utf-8");PrintWriterout=response.getWriter();out.println("");out.println("");out.println("");out.println("从Servlet2中获取请求参数name的值：");out.println(request.getParameter(

8、"name"));out.println("");out.println("");}}同时要在项目中的web.xml对Servlet进行声明：Se