在DoPostBack链接点击上加载资源失败

Question

我正在尝试通过单击与CasperJS的aspx页面链接来下载可用的ZIP文件。但是我的程序失败并返回“加载资源失败，状态=失败（HTTP 200）”。

我的代码：

 var casper = require('casper').create({
        pageSettings: {
            userName: 'myusername',
            password: 'mypwd',
            localToRemoteUrlAccessEnabled: 'true',
            XSSAuditingEnabled: 'true',
            webSecurityEnabled: false
        }
    });

    casper.start('https://mysite/login.aspx');

    casper.userAgent('Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)');

    // some code for identification...

    casper.thenOpen('https://mysite/mypage.aspx');

    casper.waitForSelector(
            'a[id="myidlink"]',
            function() {
                this.click('#myidlink');
            },
            function() {
                this.log('TIMEOUT!','error');
                this.exit(62);
            },
            10000   
    );

    casper.waitForSelector('#myidlink');

    casper.on('resource.received', function (resource) {
        if (resource.contentType == "application/zip" && resource.stage == 'end'){
            this.log('resource.id : ' + resource.id, 'info');
            this.log('resource.url : ' + resource.url, 'info');
        }
    });

    casper.run();

我使用命令：

在ubuntu终端中执行此代码

casperjs --ignore-ssl-errors=true --web-security=false --ssl-protocol=any --verbose --log-level=debug mycasperjs.js

控制台日志返回“加载资源失败”：

[info] [phantom] Starting...
...
[debug] [phantom] Mouse event 'mousedown' on selector: #myidlink
[debug] [phantom] Mouse event 'mouseup' on selector: #myidlink
[debug] [phantom] Mouse event 'click' on selector: #myidlink
[info] [phantom] Step anonymous 9/10: done in 8142ms.
[debug] [phantom] Navigation requested: url=https://mysite/mypage.aspx
[warning] [phantom] Loading resource failed with status=fail (HTTP 200): https://mysite/mypage.aspx
[info] [phantom] Step _step 10/10 mysite/mypage.aspx (HTTP 200)
[info] [phantom] Step _step 10/10: done in 9890ms.
[info] [phantom] resource.id : 49
[info] [phantom] resource.url : mysite/mypage.aspx
[info] [phantom] waitFor() finished in 40ms.
[info] [phantom] Done 10 steps in 9948ms

使用的版本：

phantomjs --version
1.9.2
casperjs --version
1.1.0-beta3

欢迎任何帮助！

非常感谢。