`

李飞JQuery之getJSON

jsphtmljavajqueryajaxjavascript 
阅读更多

最近用jQuery做了一个ajax验证，用到了json的
jQuery.getJSON(url, [data], [callback])
代码贴出来以便共享：

前台请求jsp页面testJson.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort()
   + path + "/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>

  <title>My JSP 'test11.jsp' starting page</title>

  <meta http-equiv="pragma" content="no-cache">
  <meta http-equiv="cache-control" content="no-cache">
  <meta http-equiv="expires" content="0">
  <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
  <meta http-equiv="description" content="This is my page">
  <script type="text/javascript" src="../js/jquery-1.4.min.js"></script>
  <script type="text/javascript">
   $(function(){
    $.getJSON("testdata.jsp?username=lifei&email=lifeijava@163.com&callback=?",function(data){
     alert("username: "+data.username+"  email: "+data.email);
    });
   });
  </script>
</head>

<body>

</body>
</html>


后台jsp页面testdata.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<%
/**
  *@auth:李飞
  *@QQ1873922520
  */
response.setContentType("application/json");//这个一定要加
String callback = request.getParameter("callback");
String email = request.getParameter("email");
String username = request.getParameter("username");
String remsg = "{\"username\":\"" + username + "\",\"email\":\"" + email + "\"}";
%>
<%=callback + "(" + remsg + ")"%>
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