Question

我添加到我的classpath jackson databind ..

这是我的java代码（服务器端）

const https = require('https');
const fs = require('fs');

var options = {
  key: fs.readFileSync('/path/to/privkey.pem'),
  cert: fs.readFileSync('/path/to/fullchain.pem'),
  ca: fs.readFileSync('/path/to/chain.pem')
}

https.createServer(options, (req, res) => {
  res.writeHead(200);
  res.end('hello world\n');
}).listen(8000);

这是JS代码..

       @MessageMapping("/hello")
        @SendTo("/topic/whoIsOnline")
        public List<User> greeting(String name) throws Exception {
            List<User> list = new ArrayList<User>();
            User user = new User();
            user.setEmail("test@gmail.com");
            list.add(user);
            User user1 = new User();
            user1.setEmail("example@gmail.com");
            list.add(user1);
            System.out.println(list);
            return list;
        }

当我写document.writeln（结果）时，它会像这样打印......

var stompClient = null;
    $(document).ready(function() {

        var socket = new SockJS('onlineUsers');
        stompClient = Stomp.over(socket);
        stompClient.connect({}, function(frame) {

            console.log('Connected: ' + frame);
            stompClient.subscribe('/topic/whoIsOnline', function(result) {
                var results = result.body;
                for(var i in results){
                      console.log(results[i].email);
                    }

            });
        });
    });

    function sendName() {
        var txtUser = $('#txtUser').val();
        stompClient.send("/app/hello", {}, JSON.stringify(txtUser));
    }

但是，我想像这样打印..

[{"email":"test@gmail.com"},{"email":"example@gmail.com"}]

for循环不起作用..

test@gmail.com
example@gmail.com

Answer 1

尝试以下代码

var results = result.body;
var data = JSON.parse(results);
for(var i in data){
    console.log(data[i].email);
}

打印从Stomp over Websocket控制器传入的json数组

1 个答案: