【转】HttpClient4基础2--通过认证代理访问网页

HttpClient发布4.0了 而且底层完全重写了，据说无论是效率还是结构都有质的飞跃。 
现在也要与时具进，研究研究。

 

 

package test.httpclient4.proxy;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import org.apache.http.HttpEntity;
import org.apache.http.HttpHost;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
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.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.conn.params.ConnRoutePNames;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
public class GetHttpByProxyCredentials {

    /**
     * @param args
     * @throws IOException
     * @throws ClientProtocolException
     */
    public static void main(String[] args) throws ClientProtocolException, IOException {
        //实例化一个HttpClient
        HttpClient httpClient = new DefaultHttpClient();
        //设定目标站点
        HttpHost httpHost = new HttpHost("www.shanhe114.com");
        //设置代理对象 ip/代理名称,端口
        HttpHost proxy = new HttpHost("proxy.tt", 8080);
        //实例化验证
        CredentialsProvider credsProvider = new BasicCredentialsProvider();
        //设定验证内容
        UsernamePasswordCredentials creds = new UsernamePasswordCredentials("fttj", "ft07");
        //创建验证
        credsProvider.setCredentials(
            new AuthScope(AuthScope.ANY_HOST, AuthScope.ANY_PORT),
            creds);
        httpClient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);
        ((DefaultHttpClient)httpClient).setCredentialsProvider(credsProvider);

        // 目标地址
        HttpGet httpget = new HttpGet("/");
        // 执行
        HttpResponse response = httpClient.execute(httpHost, httpget);
        if(HttpStatus.SC_OK==response.getStatusLine().getStatusCode()){
            //请求成功
            //取得请求内容
            HttpEntity entity = response.getEntity();
            //显示内容
            if (entity != null) {
                // 显示结果

                System.out.println(EntityUtils.toString(entity,"utf-8"));

            }
            if (entity != null) {
                entity.consumeContent();
            }
        }
    }
}