JQuery ajax 返回json时出现中文乱码该如何解决

$.ajax({ 
 url: '/test/testAction.do?method=test', 
 type: 'POST', 
 dataType: 'json', 
 timeout: 5000, 
 async: false, 
 error: function(){ 
 alert('获取数据失败！'); 
 }, 
 success: function(json){ 
 jsObject = eval(json); 
 } 
 }); 
 return jsObject;

<span style="font-size: x-small;">$.ajax({ 
 url: '/test/testAction.do?method=test', 
 type: 'POST', 
 dataType: 'json', 
 timeout: 5000, 
 async: false, 
 error: function(){ 
 alert('获取数据失败！'); 
 }, 
 success: function(json){ 
 jsObject = eval(json); 
 } 
 }); 
 return jsObject;</span> 
action：

JSONArray json = JSONArray.fromObject(SysList);//SysList是一个List 
// 设置response的ContentType解决中文乱码 
 response.setContentType("text/html;charset=UTF-8"); 
 response.getWriter().print(json.toString()); 
 return null; 
Java代码 
<span style="font-size: x-small;">JSONArray json = JSONArray.fromObject(SysList);//SysList是一个List 
// 设置response的ContentType解决中文乱码 
 response.setContentType("text/html;charset=UTF-8"); 
 response.getWriter().print(json.toString()); 
 return null;</span>