Question

我目前正在尝试通过http Get调用服务器进行身份验证。下面提供的代码在java项目中编译时有效。将正确的令牌返回给程序。但是，每当我尝试在Android中实现相同的代码时，我都不会通过Get调用返回令牌。

在Android中，我在函数中返回inputLine，但inputLine始终为空字符串。

system.out.println（）打印返回的标记。

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import javax.net.ssl.HttpsURLConnection;

public class JavaHttpsExample 
{

public static void main(String[] args)
{   String inputLine = new String();
    try
    {
    String httpsURL = "https://the url";
    URL myurl = new URL(httpsURL);
    HttpsURLConnection con = (HttpsURLConnection)myurl.openConnection();
    InputStream ins = con.getInputStream();
    InputStreamReader isr=new InputStreamReader(ins);
    BufferedReader in =new BufferedReader(isr);

    inputLine = in.readLine();

    System.out.println(inputLine);

    in.close();


    }
    catch(IOException e)
    {
        e.printStackTrace();
    }
 }
}

感谢您的帮助!!!

Answer 1

您可能没有将Internet-Permission添加到项目AndroidManifest.xml中。如果是这样，请将以下行添加为<manifest/>节点的子节点：

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

Answer 2

我正在使用POST和FormEntity从服务器检索数据（例如身份验证），我从来没有遇到任何问题：

final String httpsURL = "https://the url";
final DefaultHttpClient client = new DefaultHttpClient();
final HttpPost httppost = new HttpPost(httpsURL);

//authentication block:
final List<BasicNameValuePair> nvps = new ArrayList<BasicNameValuePair>();
nvps.add(new BasicNameValuePair("userName", userName));
nvps.add(new BasicNameValuePair("password", password));
final UrlEncodedFormEntity p_entity = new UrlEncodedFormEntity(nvps, HTTP.UTF_8);
httppost.setEntity(p_entity);

//sending the request and retrieving the response:
HttpResponse response = client.execute(httppost);
HttpEntity responseEntity = response.getEntity();

//handling the response: responseEntity.getContent() is your InputStream
final InputSource inputSource = new InputSource(responseEntity.getContent());
[...]

也许你会发现这个有用的

Https请求，Android中的身份验证

2 个答案: