httpclient post 请求

package com.thinkgem.jeesite.common.utils;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.ParseException;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.codehaus.jettison.json.JSONObject;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.security.*;
import java.security.cert.CertificateException;
import java.util.*;

public class HttpUtil {
    HttpClient httpclient=new DefaultHttpClient();

    /**
     * 发送 post请求访问本地应用并根据传递参数不同返回不同结果
     */
    public String post(String url,String reqEncoding,String respEncoding,JSONObject jsonObj) {
        String resStr = "";
        // 创建httppost
        HttpPost httppost = new HttpPost(
                url);
        // 创建参数队列
        //List<NameValuePair> formparams = jsonObj;

        UrlEncodedFormEntity uefEntity;
        try {

            StringEntity sEntity = new StringEntity(jsonObj.toString(),"utf-8");//解决中文乱码问题
            sEntity.setContentEncoding("UTF-8");
            sEntity.setContentType("application/json"); 

            //httppost.setEntity(uefEntity);
            httppost.setEntity(sEntity);
            HttpResponse response;
            response = httpclient.execute(httppost);
            HttpEntity entity = response.getEntity();
            if (entity != null) {
                resStr = EntityUtils.toString(entity,respEncoding);
            }
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e1) {
            e1.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            // 关闭连接,释放资源
           // httpclient.getConnectionManager().shutdown();
        }
        return resStr;
    }

    /**
     * 发送 get请求
     */
    public String get(String url) {
        String resStr = "";
        try {
            // 创建httpget.
            HttpGet httpget = new HttpGet(url);
            // 执行get请求.
            HttpResponse response = httpclient.execute(httpget);
            // 获取响应实体
            HttpEntity entity = response.getEntity();
            // 打印响应状态
            System.out.println(response.getStatusLine());
            if (entity != null) {

                resStr=EntityUtils.toString(entity);
            }
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (ParseException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            // 关闭连接,释放资源
            //httpclient.getConnectionManager().shutdown();
        }
        return resStr;
    }

    public static void main(String[] args) throws ClientProtocolException, IOException {
        /*HttpUtil ht = new HttpUtil();// 构造参数
        String requestTime = DateUtils.getDate("yyyy-MM-dd HH:mm:ss");
        requestTime = requestTime
                .replaceFirst("" + requestTime.charAt(10), "T");//替换空为T

        requestTime += ".000";//增加毫秒数

        ApiAuthUtil apiAuthUtil = new ApiAuthUtil("InterFlight", "Query",
                "FzSearch", "4874257a-c262-4586-bd4b-09b95a500857",
                "47dc925ec0a2ec96", requestTime, 96870);
        String apiURL = apiAuthUtil
                .getApiURL("http://tcopenapi.17usoft.com/flight/Inter/Query/FzSearch");
        System.out.println(apiURL);
        String result = ht.post(apiAuthUtil.getApiURL("http://tcopenapi.17usoft.com/flight/Inter/Query/FzSearch"), "utf-8");
        System.out.println("result:" + result);*/

    }
}