Java 在websocket消息上发布AJAX帖子会导致超时异常
因此,我有一个程序,基本上允许两个用户通过websocket与javascript和java服务器端点进行来回聊天和做其他事情。当其中一个用户按下按钮时,我有一个监听器,它向调用函数的另一个用户发出消息。在这个函数中,我希望能够使用JQuery调用AJAX POST来更新我的数据库,但这会导致java.util.concurrent.TimeoutException。你知道为什么会这样吗?我想这与websocket连接没有保持足够长的开放时间,ajax调用无法通过这一事实有关 所以我做了研究,发现websocket和AJAX不应该完全混合(我认为)。然而,我似乎无法找到一个替代方案,甚至更新我的数据库。这方面有很多代码,所以我将尝试只发布重要部分 以下是按下按钮时的代码部分(这是一个同意按钮,因此两个用户都必须按下它,因此会出现“**”和“--”字符) 下面是在上述代码末尾调用的代码部分(agreeBut.socket.send())Java 在websocket消息上发布AJAX帖子会导致超时异常,java,javascript,jquery,ajax,websocket,Java,Javascript,Jquery,Ajax,Websocket,因此,我有一个程序,基本上允许两个用户通过websocket与javascript和java服务器端点进行来回聊天和做其他事情。当其中一个用户按下按钮时,我有一个监听器,它向调用函数的另一个用户发出消息。在这个函数中,我希望能够使用JQuery调用AJAX POST来更新我的数据库,但这会导致java.util.concurrent.TimeoutException。你知道为什么会这样吗?我想这与websocket连接没有保持足够长的开放时间,ajax调用无法通过这一事实有关 所以我做了研究,发
原来我遇到这个问题是因为在我的java ServerEndpoint上设置了超时。在类中,我对会话变量使用了setMaxIdleTimeout(0)函数,以使其没有空闲超时。这似乎解决了我的问题(但我觉得这实际上只是针对我这边糟糕的websocket和ajax实现的一个解决办法)
fAgree.addEventListener("click", function() {
// selects this button
if (aStr == "**" && (yStr == "**" || oStr == "**")) {
if (fStr == "--") {
fStr = "*-";
//redirect to another page
} else if (fStr == "-*") {
fStr = "**";
if(secondTransaction == false) {
var firstCoordUpload = document.getElementById("yourPos").innerHTML;
var secondCoordUpload = document.getElementById("othersPos").innerHTML;
var firstLatUpload = parseFloat(firstCoordUpload.split(",")[0]);
var firstLonUpload = parseFloat(firstCoordUpload.split(",")[1]);
$.ajax({
url: "../../309/T11/setSaleData/" + getURLParameter("saleID") + "/" + firstLatUpload + "/" + firstLonUpload + "/" + firstCoordUpload + "/" + secondCoordUpload + "/" + secondSeller,
type: "POST",
headers: {
"Authorization" : getCredentials(),
},
success: function (result) {
window.location.href = '../../frontEnd/profilePage/index.html?username='+ getUsername();
console.log(result);
},
error: function (dc, status, err) {
console.log(err);
console.log(status);
}
});
}
}
agreeBut.socket.send("a,f");
htmlChange(fStr, fStar);
}
});
agreeBut.socket.onmessage = function(message) {
// check [0]: a for agree buttons,
// m for map,
// l of location buttons,
// t for trade
var mess = message.data.split(",");
if (mess[0] == "a") {
// second a shows the agree button was pressed, changes aStr
// accordingly and displays
if (mess[1] == "a") {
if (aStr == "--") {
aStr = "-*";
} else if (aStr == "*-") {
aStr = "**";
}
htmlChange(aStr, aStar);
// shows the final agree button has been pressed, changes fStr
// accordingly and displays
} else if (mess[1] == "f") {
if (fStr == "--") {
fStr = "-*";
//redirect
} else if (fStr == "*-") {
fStr = "**";
alert("on this");
if(secondTransaction == true) {
alert("doing it");
var firstCoordUpload = document.getElementById("yourPos").innerHTML;
var secondCoordUpload = document.getElementById("othersPos").innerHTML;
var firstLatUpload = parseFloat(firstCoordUpload.split(",")[0]);
var firstLonUpload = parseFloat(firstCoordUpload.split(",")[1]);
$.ajax({
url: "../../309/T11/setSaleData/" + getURLParameter("saleID") + "/" + firstLatUpload + "/" + firstLonUpload + "/" + firstCoordUpload + "/" + secondCoordUpload + "/" + secondSeller,
type: "POST",
headers: {
"Authorization" : getCredentials(),
},
success: function (result) {
console.log(result);
alert("Got it");
window.location.href = '../../frontEnd/profilePage/index.html?username='+ getUsername();
},
error: function (dc, status, err) {
console.log(err);
console.log(status);
}
});
}
//window.location.href = '../../frontEnd/profilePage/index.html?username='+ getUsername();
}
htmlChange(fStr, fStar);
}
}
};