Question

我需要在端口7788上创建web api，它将接受json，然后将json传递给我的api，它将呈现网站，然后幻像js将在该页面上找到元素，并且端口7788上的web api应该返回该元素。一切顺利，直到我尝试在7788上向我的服务器发送响应，错误：

无法访问已删除QObject的成员`write'：

为此：firstResponse.write(imgsrc);

是否可以在调用page.open之后返回带有server.listen响应的元素？

var server = require('webserver').create();
    var port = require('system').env.PORT || 7788;

    server.listen(port, {'keepAlive': false}, function (request, response) {

        console.log("request method: ", request.method);  // request.method POST or GET    
            var imgsrc;
            var firstResponse = response;

        if (request.method == 'POST') {

            var page = require('webpage').create();
            var settings = {
              operation: "POST",
              encoding: "utf8",
              headers: {
                "Content-Type": "application/json"
              },
              data: JSON.stringify(request.post)
            };
            var url = "http://127.0.0.1:5000/mapapp";

             page.onConsoleMessage = function(msg, lineNum, sourceId) {
                console.log('CONSOLE: ' + msg + ' (from line #' + lineNum + ' in "' + sourceId + '")');
            }; 

            page.open(url, settings, function (status) {


                setTimeout(function () {
                    page.evaluate(function () { 

                        imgsrc = document.getElementById("exportedImg").src;
                    });

                }, 5000);
            });
            page.close();
            setTimeout(function () {
                    firstResponse.write(imgsrc);

                }, 7000);
        firstResponse.close(); 

        }


    });

Answer 1

你调用firstResponse.close（）;之前调用firstResponse.write（imgsrc）;超时后将firstResponse.close（）移动到setTimeout处理程序：

page.close();
setTimeout(function () {
            firstResponse.write(imgsrc);
            firstResponse.close(); 
}, 7000);

PhantomJS错误：无法访问已删除QObject的成员'write'

1 个答案: