前端HTML<body>? ? <button id="getvalue">? ? 請點擊? ? </button>? ? <div id = "value"></div> ?</body>Ajax代碼$("#getvalue").click(function(){ $.ajax({ url:"/servlet/doajax", cache:true, type:"GET", data:{username:"admin"}, async:false, datatype:"html", error:function(request){ alert("cuowu"); }, success:function(data){ $("#value").html(data); } }); });servlet代碼public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html"); String username = request.getParameter("username"); System.out.println(username); PrintWriter out = response.getWriter(); out.print("welcome "+username); out.flush(); out.close(); }xml配置?<servlet>? ? <description>This is the description of my J2EE component</description>? ? <display-name>This is the display name of my J2EE component</display-name>? ? <servlet-name>doajax</servlet-name>? ? <servlet-class>servlet.doajax</servlet-class>? </servlet>? <servlet-mapping>? ? <servlet-name>doajax</servlet-name>? ? <url-pattern>/servlet/doajax</url-pattern>? </servlet-mapping>
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