ajax长轮询 spring mvc,springmvc ajax 长轮询

ajax长轮询 spring mvc,springmvc ajax 长轮询前台代码 function function poll var param searchType 1 key 0 timestamp sign 123 ajax type POST contentType application json charset utf 8 url

前台代码:

$(function(){

function poll(){

var param={“searchType”:”1″,”key”:”0100008″,”timestamp”:”1409382910″ ,”sign”:”123″ };

$.ajax({ type: “POST”,

contentType:”application/json;charset=utf-8″,

url: “xxxx”,data:JSON.stringify(param), success:function(data) {

console.log(data);

poll();

}, dataType: “json” });

}

poll();

});

后台代码:

private final ExecutorService exec = Executors.newFixedThreadPool(1);

private BlockingQueue queue=new ArrayBlockingQueue<>(5);

@RequestMapping(value = “/findUserAreaList3”)

@ResponseBody

public BaseResult findUserAreaList3() {

Callable call = new Callable() {

public Object call() throws Exception {

Object take = queue.take();

return take;

}

};

Future future = exec.submit(call);

Object ret;

try {

// 任务处理超时时间设为 10秒

ret = future.get(10, TimeUnit.SECONDS);

} catch (Exception e) {

return setResponseVo(“error”);

}

return setResponseVo(ret);

}

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