JSP解析JSON对象

JAVABean Emp转JSON $(":button :first").click(function(){ url="${pageContext.request.contextPath }/emp/bean2json.do?time="+new Date().getTime();    var sendDate =null;   $.post(url,sendDate,function(backDate,extStatus,ajax){       var e = ajax.responseText;    alert(e);    var data = eval(backDate);    alert(data.id); });   });	@RequestMapping(value="/bean2json") public @ResponseBody Emp bean2json() throws Exception{ //创建Emp对象 Emp emp = new Emp(); emp.setId(1); emp.setUsername("哈哈"); emp.setSalary(7000D); emp.setHiredate(new Date()); //返回Emp对象 转成JSON文本 return emp; }
<!-- List对象转JSON --> <script type="text/javascript">    $(":button :eq(1)").click(function(){ url="${pageContext.request.contextPath }/emp/listbean2json.do?time="+new Date().getTime();    var sendDate =null;     $.post(url,sendDate,function(backDate){      var  data = eval(backDate);    alert(data);        for(var p in data){  alert(data[p].id+"-"+ data[p].username+"-"+        data[p].salary+"-"+data[p].hiredate); }    for(var i=0;i<data.length;i++){      for(var key in data[i]){    alert(key+':'+data[i][key]);    }    }      });      });   </script>	@RequestMapping(value="/listbean2json") public @ResponseBody List<Emp> listbean2json() throws Exception{ //创建List对象 List<Emp> empList = new ArrayList<Emp>(); //向List对象中添加三个Emp对象 empList.add(new Emp(1,"哈哈",7000D,new Date())); empList.add(new Emp(2,"呵呵",8000D,new Date())); empList.add(new Emp(3,"嘻嘻",9000D,new Date())); //返回需要转JSON文本的对象 return empList; }
<!-- Map<String,Object>转JSON -->   <script type="text/javascript">    $(":button :last").click(function(){ url="${pageContext.request.contextPath}/emp/map2json.do?time="+new Date().getTime();    var sendDate =null;      $.post(url,sendDate,function(backDate,extStatus,ajax){         //var  data = eval(backDate);   //var row = data.rows;        //alert(row);          var row = backDate.rows;    alert(backDate.total);      for(var p in row){    alert(row[p].id+"-"+ row[p].username+"-"+row[p].salary+"-"+row[p].hiredate);    }      });       });   </script>	@RequestMapping(value="/map2json") public @ResponseBody Map<String,Object> map2json() throws Exception{ //创建List对象 List<Emp> empList = new ArrayList<Emp>(); //向List对象中添加三个Emp对象 empList.add(new Emp(1,"哈哈",7000D,new Date())); empList.add(new Emp(2,"呵呵",8000D,new Date())); empList.add(new Emp(3,"嘻嘻",9000D,new Date())); //创建Map对象 Map<String,Object> map = new LinkedHashMap<String,Object>(); //向Map对象中绑定二个变量 map.put("total",empList.size()); map.put("rows",empList); //返回需要转JSON文本的对象 return map; }