ajax动态加载json数据并详细解析(ajax动态请求)速看

随心笔谈9个月前发布 admin
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效果图

jsp代码

<form >
姓名:<input name=”name” type=”text”/>
年龄:<input name=”age” type=”text”/>
<input type=”button” class=”get” value=”get提交”/>
<input type=”button” class=”post” value=”post提交”/>
<input type=”button” class=”ajax” value=”ajax提交”/>
</form>
<div id=”box”></div>

servlet代码

//get
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

response.setContentType(“text/html”);
response.setCharacterEncoding(“utf-8”);
response.setContentType(“text/html;charset=utf-8”);
String name=request.getParameter(“name”);
String age=request.getParameter(“age”);
if (name==null || name==””) {
name=”测试名字admin”;
}

if (age==null || age==””) {
age=”测试年龄100″;
}
user user=new user(1, name, age);
PrintWriter out=response.getWriter();

JSONObject jsonObj=JSONObject.fromObject(user);

out.print(jsonObj);

out.flush();
out.close();
}

//post
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

// response.setContentType(“text/html”);

request.setCharacterEncoding(“utf-8”);
response.setCharacterEncoding(“utf-8”);
response.setContentType(“text/html;charset=utf-8”);
String name=request.getParameter(“name”);
if (name==null || name==””) {
name=”测试名字admin”;
}
String age=request.getParameter(“age”);
if (age==null || age==””) {
age=”测试年龄100″;
}
user user=new user(1, name, age);
PrintWriter out=response.getWriter();

JSONObject jsonObj=JSONObject.fromObject(user);

out.print(jsonObj);

out.flush();
out.close();
}

JS核心代码

<script type=”text/javascript”>
//get
$(document).ready(function() {
$(‘form .get’).click(function() {
$.get(‘ajaxServlet’,function(response,status,xhr){
var dataObj=eval(“(” + response + “)”);
$(“#box”).html(response);
alert(dataObj.name);

});

});
//post
$(‘form .post’).click(function() {
$.post(‘ajaxServlet’,function(response,status,xhr){
var dataObj=eval(“(” + response + “)”);
$(“#box”).html(response);

});

});
//ajax
$(‘form .ajax’).click(function() {
alert($(“[name=’name’]”).val());
$.ajax({
type:’get’,
url:’ajaxServlet’,
data:{
name:$(“[name=’name’]”).val(),
age:$(“[name=’age’]”).val()
},
success:function(response, status, xhr){
$(“#box”).html(response);}
});

});

});

</script>

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