java 如何在 Spring 控制器中获取 JSON 数据？
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how to get the JSON data in Spring controller?
提问by Human Being
I know it is a simple one . But couldn't find a solution.
我知道这是一个简单的。但找不到解决办法。
My jQuery-ajax will be ,
我的 jQuery-ajax 将是，
var json = {"message":"Message123","time":"time123","name":"test123"}
data : JSON.stringify(json),
My Spring controller will be ,
我的 Spring 控制器将是，
@RequestMapping(value = "chat.html", method=RequestMethod.GET )
public @ResponseBody String getChat() {
System.out.println("Entered in to the controller ");
String name == ???
String msg == ???
String time == ???
//Process the functionality using the msg,name,time
return "Json String";
}
How can I get the values of the name, message , time.
如何获取 name、message、time 的值。
Hope our stack members will help me.
希望我们的堆栈成员能帮助我。
回答by JaredYang
var json = {"message":"Message123","time":"time123","name":"test123"}
data : JSON.stringify(json) should have a key ,
data : {json:{"message":"Message123","time":"time123","name":"test123"}},
url:/json/test
Controller
控制器
@RequestMapping(value = {"json/test"},method = RequestMethod.GET)
@ResponseBody
public String jsonTest(String json){
JSONObject jsonObject = JSONObject.fromObject(json);
String m = jsonObject.get("message").toString();
String t = jsonObject.get("time").toString();
String n = jsonObject.get("name").toString();
}
I use the net.sf.json.JSONObject
我用 net.sf.json.JSONObject
回答by Hitesh Kumar
You can use org.Json jar from this link...
您可以从此链接使用 org.Json jar ...
Then try this code, I have done is in my current project and is working fine and efficiently
然后试试这个代码，我已经完成了在我当前的项目中并且运行良好且高效
var json = {"message":"Message123","time":"time123","name":"test123"}
$.ajax({
type: "POST",
url: "/chat.html",
data: "jsonObject="+json,
success: function(response) {
// your success code
},
error: function(e) {
// your error code
}
});
In controller change your code like this
在控制器中像这样改变你的代码
@RequestMapping(value = "/chat.html", method=RequestMethod.POST )
public @ResponseBody String getChat(HttpServletRequest req,HttpServletResponse res) {
JSONObject jsonObject = null;
try {
jsonObject = new JSONObject(req.getParameter("jsonObject"));
} catch(JSONException _instance) {
// Exception Handle Message
}
System.out.println("Entered in to the controller ");
String name ="" , msg = "", time = "";
if(jsonObject.has("name")) {
name = jsonObject.getString("name");
}
... // Do it for other variables also
//Process the functionality using the msg,name,time
return "Json String";
}
