java httpclient digest

以下是使用Java HttpClient进行Digest认证的示例代码：

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.ClientProtocolException;import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

import java.io.IOException;

public class HttpClientDigestAuthExample {

    public static void main(String[] args) throws ClientProtocolException, IOException {

        // 创建HttpClient实例
        CloseableHttpClient httpclient = HttpClients.createDefault();

        try {
            // 创建HttpGet请求
            HttpGet httpget = new HttpGet("http://www.example.com/");

            // 创建凭据提供程序
            CredentialsProvider credsProvider = new BasicCredentialsProvider();
            credsProvider.setCredentials(
                    new AuthScope("www.example.com", 80),
                    new UsernamePasswordCredentials("username", "password"));

            // 设置凭据提供程序
            httpclient = HttpClients.custom()
                    .setDefaultCredentialsProvider(credsProvider)
                    .build();

            // 执行请求
            HttpResponse response = httpclient.execute(httpget);
            HttpEntity entity = response.getEntity();

            // 打印响应内容
            if (entity != null) {
                System.out.println(EntityUtils.toString(entity));
            }
        } finally {
            // 关闭连接
            httpclient.close();
        }
    }
}