[转]HttpClient4基础1-经过匿名代理访问网页

[转]HttpClient4基础1--通过匿名代理访问网页

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。

[c-sharp] view plaincopy
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.StatusLine;     
import org.apache.http.client.ClientProtocolException;     
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.DefaultHttpClient;     
import org.apache.http.message.BasicStatusLine;     
import org.apache.http.util.EntityUtils;     
    
    
public class GetHttpByProxy {     
    
    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("192.168.1.28", 5608);     
        //对HttpClient对象设置代理     
        httpClient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY,     
                proxy);     
        HttpGet httpGet = new HttpGet("/");     
        //这里也可以直接使用httpGet的绝对地址，当然如果不是具体地址不要忘记/结尾     
        //HttpGet httpGet = new HttpGet("http://www.shanhe114.com/");     
        //HttpResponse response = httpClient.execute(httpGet);     
             
        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     
                BufferedReader reader = new BufferedReader(new InputStreamReader(entity     
                        .getContent(), "UTF-8"));     
                String line = null;     
                StringBuffer strBuf = new StringBuffer((int) entity.getContentLength());     
                while ((line = reader.readLine()) != null) {     
                    strBuf.append(line);     
                }     
                strBuf.trimToSize();     
                System.out.println(strBuf.toString());     
            }     
            if (entity != null) {     
                entity.consumeContent();     
            }     
        }     
    }     
}    

对于显示将结果转换成String以备后续使用，HttpClient已经为我们提供了一个简便方法
如下

[java] view plaincopy
System.out.println(EntityUtils.toString(entity,"utf-8"));    

[转]HttpClient4基础1-经过匿名代理访问网页

相关推荐