Ajax应用(jsp例子)

public class AjaxServlet extends HttpServlet {
 Logger log = Logger.getLogger(this.getClass());
 public void doGet(HttpServletRequest request, HttpServletResponse response)
   throws ServletException,IOException {
  response.setContentType("text/xml; charset=GBK");
  PrintWriter out = response.getWriter();
    out.print(2);
   }
 }
 //Process the HTTP Post request
 public void doPost(HttpServletRequest request, HttpServletResponse response)
   throws ServletException, IOException {
  doGet(request, response);
 }

 //Process the HTTP Put request
 public void doPut(HttpServletRequest request, HttpServletResponse response)
   throws ServletException, IOException {
 }

 //Process the HTTP Delete request
 public void doDelete(HttpServletRequest request,
   HttpServletResponse response) throws ServletException, IOException {
 }

 //Clean up resources
 public void destroy() {
 }
}

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如果是webwork

xwork.xml

   <action name="ajax" class="com.whw.upload.action.webwork.AjaxAction" method="ajax"/>

AjaxAction.java

import java.io.PrintWriter;

public class AjexAlbumAction extends ActionSupport implements Action{

  public void ajax()throws IOException {
             PrintWriter pw = ServletActionContext.getResponse().getWriter();
            ServletActionContext.getResponse().setContentType("text/html;charset=GBK");
            pw.print(1);
            pw.close();
  }

}

本例子在winXPsp2、JB9、Eclipse3，j2sdk1.4.1 、Tomcat5、Tomcat4.1都能运行