post get HttpClient

package com.common;

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.springframework.util.Base64Utils;

/**
*
* @author Administrator
*
*/
public class HttpClient {
public static Logger logger = LogManager.getLogger("xmllog");
public static String HMAC_SHA1_ALGORITHM = "HmacSHA1";

/**
     * 向指定 URL 发送POST方法的请求
     *
     * @param url
     *            发送请求的 URL
     * @param param
     *            请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @return 所代表远程资源的响应结果
     */
    public static String sendPost(String url, String param) {
        PrintWriter out = null;
        BufferedReader in = null;
        String result = "";
        try {
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            HttpURLConnection conn = (HttpURLConnection) realUrl.openConnection();
            // 设置通用的请求属性
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
                      // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);

            OutputStreamWriter writer = new OutputStreamWriter(conn.getOutputStream());
            writer.write(param);
            writer.flush();

//            // 获取URLConnection对象对应的输出流
//            out = new PrintWriter(conn.getOutputStream());
//            // 发送请求参数
//            out.print(param);
//            // flush输出流的缓冲
//            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            in = new BufferedReader(
                    new InputStreamReader(conn.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("发送 POST 请求出现异常！"+e);
            e.printStackTrace();
        }
        //使用finally块来关闭输出流、输入流
        finally{
            try{
                if(out!=null){
                    out.close();
                }
                if(in!=null){
                    in.close();
                }
            }
            catch(IOException ex){
                ex.printStackTrace();
            }
        }
     // 打印返回报文
     StringBuffer loggerBugffer = new StringBuffer();//清空日志缓存
     loggerBugffer.append("*************客户登录返回报文************ /n");
     loggerBugffer.append(result+"/n");
     loggerBugffer.append("*************客户登录返回报文************ ");
     logger.info(loggerBugffer);
     // 打印返回报文
        return result;
    }
   
    /**
     *
     * DESCRIPTION:发送http请求
     * @author
     * @date 2016年6月2日
     * sendPost 方法
     * @param url
     * @param param
     * @param charset
     * @return
     * @return String
     * @throws
     */
    public static String sendPost(String url, String param,String charset) {
        PrintWriter out = null;
        BufferedReader in = null;
        String result = "";
        try {
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            HttpURLConnection conn = (HttpURLConnection) realUrl.openConnection();
            // 设置通用的请求属性
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            conn.setRequestProperty("Content-Type", "application/xml;charset="+charset); // 设置发送数据的格式 
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            conn.setRequestMethod("POST");

            OutputStreamWriter writer = new OutputStreamWriter(conn.getOutputStream(),"UTF-8");
            writer.write(param);
            writer.flush();

//            // 获取URLConnection对象对应的输出流
//            out = new PrintWriter(conn.getOutputStream());
//            // 发送请求参数
//            out.print(param);
//            // flush输出流的缓冲
//            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            in = new BufferedReader(
                    new InputStreamReader(conn.getInputStream(),charset));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("发送 POST 请求出现异常！"+e);
            e.printStackTrace();
        }
        //使用finally块来关闭输出流、输入流
        finally{
            try{
                if(out!=null){
                    out.close();
                }
                if(in!=null){
                    in.close();
                }
            }
            catch(IOException ex){
                ex.printStackTrace();
            }
        }
        return result;
    }
   
    /**
     *
     * DESCRIPTION:发送post参数请求
     * @author
     * @date 2016年6月2日
     * sendPost 方法
     * @param url
     * @param param
     * @return
     * @return String
     * @throws
     */
    public static String sendPostparam(String url, String param,String charset) {
        PrintWriter out = null;
        BufferedReader in = null;
        String result = "";
        try {
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            HttpURLConnection conn = (HttpURLConnection) realUrl.openConnection();
            // 设置通用的请求属性
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded;charset="+charset); // 设置发送数据的格式 
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            conn.setRequestMethod("POST");

            OutputStreamWriter writer = new OutputStreamWriter(conn.getOutputStream(),"UTF-8");
            writer.write(param);
            writer.flush();

//            // 获取URLConnection对象对应的输出流
//            out = new PrintWriter(conn.getOutputStream());
//            // 发送请求参数
//            out.print(param);
//            // flush输出流的缓冲
//            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            in = new BufferedReader(
                    new InputStreamReader(conn.getInputStream(),charset));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("发送 POST 请求出现异常！"+e);
            e.printStackTrace();
        }
        //使用finally块来关闭输出流、输入流
        finally{
            try{
                if(out!=null){
                    out.close();
                }
                if(in!=null){
                    in.close();
                }
            }
            catch(IOException ex){
                ex.printStackTrace();
            }
        }
        return result;
    }
   
   
    /**
     *
     * DESCRIPTION:发送JSON
     * @author
     * @date 2016年6月2日
     * sendPost 方法
     * @param url
     * @param param
     * @return
     * @return String
     * @throws
     */
    public static String sendJson(String url, String param) {
    try {

             URL add_url = new URL(url);

             HttpURLConnection connection = (HttpURLConnection)add_url.openConnection();

             connection.setDoInput(true);

             connection.setDoOutput(true);

             connection.setRequestMethod("POST");

             connection.setUseCaches(false);

             connection.setInstanceFollowRedirects(true);
             connection.setRequestProperty("Accept", "application/json"); // 设置接收数据的格式 
             connection.setRequestProperty("Content-Type", "application/json;charset=utf-8"); // 设置发送数据的格式 
            


             connection.connect();

             DataOutputStream out = new DataOutputStream(connection.getOutputStream());
            
             out.write(param.getBytes("utf-8"));
            

             out.flush();

             out.close();

             BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));

             String lines;

             StringBuffer sbf = new StringBuffer();

              while ((lines = reader.readLine()) != null) {

                     lines = new String(lines.getBytes(), "utf-8");

                     sbf.append(lines);

                 }

                 System.out.println(sbf);

                 reader.close();

                 // 断开连接

                 connection.disconnect();
                 return sbf.toString();

         } catch (MalformedURLException e) {

             // TODO Auto-generated catch block

             e.printStackTrace();

         } catch (IOException e) {

             // TODO Auto-generated catch block

             e.printStackTrace();

         }
    return null;
    }
   
    public static String sendPostDoCA(String url, String param,String charset,String signature) {
        BufferedReader in = null;
        DataOutputStream out=null;
        String result = "";
        try {
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            HttpURLConnection conn = (HttpURLConnection) realUrl.openConnection();
            // 设置通用的请求属性
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            conn.setRequestProperty("Content-Type", "application/xml;charset="+charset); // 设置发送数据的格式 
            conn.setRequestProperty("Content-Signature", "HMAC-SHA1 " + signature); // 设置发送数据的格式 

            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);

            out = new DataOutputStream(conn.getOutputStream());
           
            out.write(param.getBytes("utf-8"));
            out.flush();

            out.close();
//            // 获取URLConnection对象对应的输出流
//            out = new PrintWriter(conn.getOutputStream());
//            // 发送请求参数
//            out.print(param);
//            // flush输出流的缓冲
//            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            in = new BufferedReader(
                    new InputStreamReader(conn.getInputStream(),charset));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("发送 POST 请求出现异常！"+e);
            e.printStackTrace();
        }
        //使用finally块来关闭输出流、输入流
        finally{
            try{
                if(out!=null){
                    out.close();
                }
                if(in!=null){
                    in.close();
                }
            }
            catch(IOException ex){
                ex.printStackTrace();
            }
        }
        return result;
    }
 
    /**
     *
     * DESCRIPTION:发送JSON
     * @author
     * @date 2016年6月2日
     * sendGet 方法
     * @param url
     * @param param
     * @return
     * @return String
     * @throws
     */
   
    public static String sendGet(String url, String param) {
        PrintWriter out = null;
        BufferedReader in = null;
        String result = "";
        try {
        if(!"".equals(param) && param!=null){
       int index = url.indexOf("?");
       if(index > 0){
       url =  url+"&"+param;
       }else{
       url =  url+"?"+param;
       }
       }
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            HttpURLConnection conn = (HttpURLConnection) realUrl.openConnection();
            // 设置通用的请求属性
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            conn.connect();
                      // 发送POST请求必须设置如下两行
//            conn.setDoOutput(true);
//            conn.setDoInput(true);
          
//            OutputStreamWriter writer = new OutputStreamWriter(conn.getOutputStream());
//            writer.write(param);
//            writer.flush();

//            // 获取URLConnection对象对应的输出流
//            out = new PrintWriter(conn.getOutputStream());
//            // 发送请求参数
//            out.print(param);
//            // flush输出流的缓冲
//            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
           
            in = new BufferedReader(
                    new InputStreamReader(conn.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
           logger.error("HttpClient.sendGet 发送 GET 请求出现异常："+e.getMessage(),e);
            System.out.println("发送 GET 请求出现异常！"+e);
            e.printStackTrace();
        }
        //使用finally块来关闭输出流、输入流
        finally{
            try{
                if(out!=null){
                    out.close();
                }
                if(in!=null){
                    in.close();
                }
            }
            catch(IOException ex){
                ex.printStackTrace();
            }
        }
     // 打印返回报文
     StringBuffer loggerBugffer = new StringBuffer();//清空日志缓存
     loggerBugffer.append("*************客户登录返回报文************ /n");
     loggerBugffer.append(result+"/n");
     loggerBugffer.append("*************客户登录返回报文************ ");
     logger.info(loggerBugffer);
     // 打印返回报文
        return result;
    }
}