HttpClient示例01

1、要使用 HttpClient 需要下载 Apache的相关包

　　我这里下载的是 httpcomponents-client-4.5.2-bin.zip、httpcomponents-client-4.5.2-src.zip

　　下载地址：http://hc.apache.org/downloads.cgi

　　1.1、如果只是 基本的使用的话，只需要这两个包：httpcore-4.4.4.jar、httpclient-4.5.2.jar

2、示例代码 (来源于网络)

package test;

import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;

import net.sf.json.JSONObject;

public class Ttest02
{
    public static void main(String[] args) throws Exception
    {
        main_post(
                "http://ajax.mianbao99.com/vod-showlist-id-8-order-time-c-3719-p-2.html",
                null,
                false);
    }
    
    @SuppressWarnings("deprecation")
    public static void main_post(String _strUrl, JSONObject _jsonParam, boolean _bNoNeedResponse) throws Exception
    {
        //String strUrl = "http://ajax.mianbao99.com/vod-showlist-id-8-order-time-c-3719-p-2.html";
        
        //post请求返回结果
        DefaultHttpClient httpClient = new DefaultHttpClient();
        JSONObject jsonResult = null;
        HttpPost method = new HttpPost(_strUrl);
        try {
            if (null != _jsonParam) {
                //解决中文乱码问题
                StringEntity entity = new StringEntity(_jsonParam.toString(), "utf-8");
                entity.setContentEncoding("UTF-8");
                entity.setContentType("application/json");
                method.setEntity(entity);
            }
            HttpResponse result = httpClient.execute(method);
            //url = URLDecoder.decode(url, "UTF-8");
            /**请求发送成功，并得到响应**/
            if (result.getStatusLine().getStatusCode() == 200)
            {
                String str = "";
                try
                {
                    /**读取服务器返回过来的json字符串数据**/
                    str = EntityUtils.toString(result.getEntity());
                    if (_bNoNeedResponse)
                        return;
                    System.out.println(str);
                    
                    /**把json字符串转换成json对象**/
                    jsonResult = JSONObject.fromObject(str);
                } catch (Exception e) {
                    System.out.println("post请求提交失败:" + _strUrl+"
	"+e.getMessage());
                }
            }
        } catch (Exception e) {
            System.out.println("post请求提交失败:" + _strUrl+"
	"+e.getMessage());
        }
    }
    
    @SuppressWarnings("deprecation")
    public static void main_get() throws Exception
    {
        String strUrl = "http://ajax.mianbao99.com/vod-showlist-id-8-order-time-c-3719-p-2.html";
        DefaultHttpClient client = new DefaultHttpClient();
        //发送get请求
        HttpGet request = new HttpGet(strUrl);
        HttpResponse response = client.execute(request);

        /**请求发送成功，并得到响应**/
        if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
            /**读取服务器返回过来的json字符串数据**/
            String strResult = EntityUtils.toString(response.getEntity());
            System.out.println(strResult);
            /**把json字符串转换成json对象**/
            JSONObject jsonResult = JSONObject.fromObject(strResult);
            //url = URLDecoder.decode(url, "UTF-8");
        } else {
            System.out.println("get请求提交失败:" + strUrl);
        }
    }

}

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