android-使用HttpURLConnection进行NTLM身份验证

有什么方法可以通过HttpURLConnection实现NTLM身份验证？目前,我已经使用DefaultHttpClient和JCIFSEngine实现了身份验证方案. (我的灵感是：Android: NTLM Authentication, ksoap, and persistent connections)

但是自从Android 6 Apache HTTP Client Removal以来,除了在应用gradle文件中添加useLibrary’org.apache.http.legacy’之外,我一直在寻找解决方案,原因是我想改用HttpURLConnection类来改进代码.如文档所述,此API效率更高,因为它通过透明压缩和响应缓存减少了网络使用,并最大程度地降低了功耗.

解决方法:

仅当添加库jcifs时,HttpURLConnection才能与NTLM一起使用.

这个例子适用于最新的jcifs-1.3.18：

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.UnkNownHostException;
import java.util.HashMap;
import java.util.Map;

import org.apache.http.impl.auth.NTLMEngineException;

public class TestNTLMConnection {
    public static void main(String[] args) throws UnkNownHostException, IOException, NTLMEngineException {
        // Method 1 : authentication in URL
        jcifs.Config.registerSmbURLHandler();
        URL urlRequest = new URL("http://domain%5Cuser:pass@127.0.0.1/");

        // or Method 2 : authentication via System.setproperty()
        // System.setProperty("http.auth.ntlm.domain", "domain");
        // System.setProperty("jcifs.smb.client.domain", "domain");
        // System.setProperty("jcifs.smb.client.username", "user");
        // System.setProperty("jcifs.smb.client.password", "pass");
        // Not verified // System.setProperty("jcifs.netbios.hostname", "host");
        // System.setProperty("java.protocol.handler.pkgs", "jcifs");
        // URL urlRequest = new URL("http://127.0.0.1:8180/simulate_get.PHP");

        HttpURLConnection conn = (HttpURLConnection) urlRequest.openConnection();

        StringBuilder response = new StringBuilder();

        try {
            InputStream stream = conn.getInputStream();
            BufferedReader in = new BufferedReader(new InputStreamReader(stream));

            String str = "";
            while ((str = in.readLine()) != null) {
                response.append(str);
            }
            in.close();   

            System.out.println(response);
        } catch(IOException err) {
            System.out.println(err);
        } finally {
            Map<String, String> msgResponse = new HashMap<String, String>();

            for (int i = 0;; i++) {
                String headerName = conn.getHeaderFieldKey(i);
                String headerValue = conn.getHeaderField(i);
                if (headerName == null && headerValue == null) {
                    break;
                }
                msgResponse.put(headerName == null ? "Method" : headerName, headerValue);
            }

            System.out.println(msgResponse);
        }
    }
}

警告：jcifs会忽略您使用该库定义的connectTimeout和readTimeout,这就是当主机不响应时,连接需要经过一段时间才能断开的原因.使用我在this SO thread中描述的代码来避免此错误.