Question

我正在尝试通过PC上的Android模拟器访问RESTful Web服务，该模拟器使用代理连接到互联网。

我有正常的代码可以在具有自己的数据连接的实际Android设备上访问Web服务，并使用以下代码：

    DefaultHttpClient client = new DefaultHttpClient();
    client.getParams().setParameter(ClientPNames.ALLOW_CIRCULAR_REDIRECTS, true);

    HttpGet request = new HttpGet("http://mytesturl.com/services/serviceName");
    UsernamePasswordCredentials creds = 
        new UsernamePasswordCredentials("username", "password");
    request.addHeader(BasicScheme.authenticate(creds, "UTF-8", false));

    HttpResponse response = client.execute(request);

我尝试过多种方法试图让Emulator允许通过代理连接，但没有一种方法有效。

注意，我确实在AndroidManifest.xml中启用了INTERNET：

<uses-permission android:name="android.permission.INTERNET" />

尝试1 - 设置属性：

这会在execute（）调用

中为我的服务的URL生成UnknownHostException

Properties props = System.getProperties();
props.put("http.proxyHost", "httpproxy.mycompany.com");
props.put("http.proxyPort", "80");

尝试2 - 在DefaultHttpClient中设置代理：

这会为实际代理

生成UnknownHostException

DefaultHttpClient client = new DefaultHttpClient();
client.getParams().setParameter(ClientPNames.ALLOW_CIRCULAR_REDIRECTS, true);

HttpHost proxy = new HttpHost("httpproxy.mycompany.com", 80);
client.getCredentialsProvider().setCredentials(
        new AuthScope("httpproxy.mycompany.com", 80),
        new UsernamePasswordCredentials("username", "password"));
client.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);

HttpGet request = new HttpGet("http://mytesturl.com/services/serviceName");
UsernamePasswordCredentials cred = 
    new UsernamePasswordCredentials("username", "password");
request.addHeader(BasicScheme.authenticate(cred, "UTF-8", false));
HttpResponse response = client.execute(request);

尝试3 - 在HttpGet中设置代理

这会在我的HttpGet

中为URL产生UnknownHostException

DefaultHttpClient client = new DefaultHttpClient();
client.getParams().setParameter(ClientPNames.ALLOW_CIRCULAR_REDIRECTS, true);

HttpGet request = new HttpGet("http://mytesturl.com/services/serviceName");
UsernamePasswordCredentials cred = 
    new UsernamePasswordCredentials("username", "password");
request.addHeader(BasicScheme.authenticate(cred, "UTF-8", false));
Header bs = new BasicScheme().authenticate(
        new UsernamePasswordCredentials("username", "password"),
        request);
request.addHeader("Proxy-Authorization", bs.getValue());
HttpResponse response = client.execute(request);

我不确定还有什么可以尝试的。我愿意接受任何建议。

Answer 1

遇到同样的问题，我成功了尝试3的变体（下面的代码），最重要的区别是setProperty语句。请注意，我正在调用的Web服务不需要身份验证，因此我只设置代理授权标头。

System.setProperty("java.net.useSystemProxies", "false");
System.setProperty("http.proxyHost", "123.56.7.9");
System.setProperty("http.proxyPort", "8080"); 

DefaultHttpClient client = new DefaultHttpClient();
client.getParams().setParameter(ClientPNames.ALLOW_CIRCULAR_REDIRECTS, true);

HttpGet request = new HttpGet("web service url");
Header bs = new BasicScheme().authenticate(
    new UsernamePasswordCredentials("NETWORKID", "netpassword"),
    request);
request.addHeader("Proxy-Authorization", bs.getValue());
HttpResponse response = client.execute(request);

Answer 2

你使用-http-proxy http：//：emulator命令行选项还是“设置” - ＆gt; “无线和网络” - ＆gt; “移动网络” - ＆gt; “接入点名称” - ＆gt; “Telkila”或Home＆gt;菜单＆gt;设置＆gt;无线控制＆gt;移动网络＆gt;接入点名称？

Android Emulator使用HttpGet通过代理访问RESTful Web服务

2 个答案: