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ajax动态加载json数据并详细解析

2019年05月28日  | 移动技术网IT编程  | 我要评论

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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