HttpClient如何使用代理服务器采用Get请求访问页面呢?

乔欣 Java经验 发布时间:2023-07-04 15:04:34 阅读数:13103 1
下文笔者讲述HttpClient使用代理服务器访问Get请求的方法及示例分享
1.定义代理信息
    //代理设置
    HttpHost proxy = new HttpHost("8.8.8.8", 8080);
    httpclient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);
2.运行  httpclient.execute 
  获取HttpClient信息
例:HttpClient使用代理服务器访问Get请求的示例
import java.io.BufferedReader;
import java.io.InputStreamReader;
import org.apache.http.HttpEntity;
import org.apache.http.HttpHost;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.conn.params.ConnRoutePNames;
import org.apache.http.impl.client.DefaultHttpClient;

/**
 * HttpClient使用GET方式采用代理服务器访问页面
 */
public class HttpClientGet {
  public static void main(String[] args) throws Exception {
    DefaultHttpClient httpclient = new DefaultHttpClient();
    // 访问的目标站点,端口和协议
    HttpHost targetHost = new HttpHost("www.java265.com");
    // 代理的设置
    HttpHost proxy = new HttpHost("8.8.8.8", 8080);
    httpclient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);
    // 目标地址
    HttpGet httpget = new HttpGet("/");
    System.out.println("目标: " + targetHost);
    System.out.println("请求: " + httpget.getRequestLine());
    // 执行
    HttpResponse response = httpclient.execute(targetHost, httpget);
    HttpEntity entity = response.getEntity();
    System.out.println("----------------------------------------");
    System.out.println(response.getStatusLine());
    if (entity != null) {
      System.out.println("Response content length: " + entity.getContentLength());
    }
    // 显示结果
    BufferedReader reader = new BufferedReader(new InputStreamReader(entity.getContent(), "UTF-8"));
    String line = null;
    while ((line = reader.readLine()) != null) {
      System.out.println(line);
    }
    if (entity != null) {
      entity.consumeContent();
    }
  }
}
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