java后台向路徑發送請求獲得相應參數

從java后台向一路徑發送請求，獲得響應的參數，put get post ，還有一個返回URL的工具類，方便代碼靈活修改

import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLDecoder;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.alibaba.fastjson.JSONException;
import com.fuyin.service.UserServiceImpl;
 
public class HttpUrl {
    private static final Logger logger = LoggerFactory.getLogger(HttpUrl.class);
    /**
     * 輸入URL 返回一卡通的參數
     * @param url
     * @return
     */
    
        public static String getruslt(String url){
            String urlStr ="";
            String inputLine = null;
            String a="";
            //url = url.replaceAll("%(?![0-9a-fA-F]{2})", "%25");
            //url = url.replaceAll("\\+", "%2B");
               try {
                urlStr = URLDecoder.decode(url, "UTF-8");
                System.out.println("請求路徑"+urlStr);
                URL oracle = new URL(urlStr);
                URLConnection conn = oracle.openConnection();
                conn.setRequestProperty("Accept-Charset", "UTF-8");
                BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream(), "utf-8"));
                while((inputLine = br.readLine()) != null){
                    a+=inputLine;
                    
                }
                //b=URLDecoder.decode(a,"UTF-8");
            } catch (UnsupportedEncodingException e1) {
                // TODO Auto-generated catch block
                e1.printStackTrace();
            } catch (MalformedURLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            System.out.println("返回的參數"+a);
        return     a;
            
        }
        
        /**
         * 返回一卡通鏈接的公用地址
         * @return
         */
        public static String returnip(){
        //String ip="http://**********/";//測試
        String ip="**********/";//生產
            return ip;
            
        }
        /**
         * PUT方法訪問
         * @param url
         * @return
         */
        public static String getput(String url) {  
            BufferedReader br = null; 
            StringBuilder sb = new StringBuilder();  
            try{  
                URL myUrl = new URL(url);  
                HttpURLConnection con = (HttpURLConnection)myUrl.openConnection();  
                con.setDoInput(true);  
                con.setDoOutput(true);  
                con.setRequestMethod("PUT");  
                con.setUseCaches(false);  
                con.setInstanceFollowRedirects(true);  
                con.setRequestProperty("Content-Type", "text/plain");  
                con.setRequestProperty("charset", "utf-8");  
                con.connect();  
                  
                DataOutputStream out = new DataOutputStream(con.getOutputStream());  
                out.flush();  
                out.close();  
                  
               
                
                br = new BufferedReader(new InputStreamReader(con.getInputStream()));  
                String aLine = null;  
                while((aLine = br.readLine()) != null){  
                    sb.append(aLine);  
                }  
                con.disconnect(); 
            }catch(Exception e){  
                  
            }
            
            return sb.toString();  
        }  
        
        /**
         * 使用GET的方式登錄
         * @param username
         * @param password
         * @return 登錄的狀態
         */
        public static String loginOfGet(String url1){
            HttpURLConnection conn = null;
            try {
                URL url =  new URL(url1);
                conn = (HttpURLConnection) url.openConnection();
                
                conn.setRequestMethod("GET");//GET和POST必須全大寫
                conn.setConnectTimeout(10000);//連接的超時時間
                conn.setReadTimeout(5000);//讀數據的超時時間
                conn.setRequestProperty("Content-type", "application/json;charset=UTF-8"); 
                int responseCode = conn.getResponseCode();
                if(responseCode==200){
                    //訪問成功，通過流取的頁面的數據信息
                    InputStream is = conn.getInputStream();
                    String status = getStringFromInputStream(is);
                    return status;
                }else{
                    logger.debug("訪問失敗："+responseCode);
                    return responseCode+"";
                }
                
            } catch (Exception e) {
                e.printStackTrace();
            } finally{
                if(conn!=null){
                    conn.disconnect();//釋放鏈接
                }
            }
            return null;
            
        }
        /**
         * 使用POST提交方式
         * @param username
         * @param password
         * @return
         */
        public static String loginOfPost(String URL1,String str) {
            HttpURLConnection conn = null;
            try {
                URL url =  new URL(URL1);
                conn = (HttpURLConnection) url.openConnection();
                
                conn.setRequestMethod("POST");//GET和POST必須全大寫
                conn.setConnectTimeout(10000);//連接的超時時間
                conn.setReadTimeout(5000);//讀數據的超時時間
                conn.setDoOutput(true);//必須設置此方法  允許輸出
            //    conn.setRequestProperty("Content-Length", 234);//設置請求消息頭  可以設置多個
                
                //post請求的參數
                //String data = "username="+username+"&password="+password;
                String data = str;
                OutputStream out = conn.getOutputStream();
                out.write(data.getBytes());
                out.flush();
                out.close();
                
                int responseCode = conn.getResponseCode();
                if(responseCode==200){
                    //訪問成功，通過流取的頁面的數據信息
                    InputStream is = conn.getInputStream();
                    String status = getStringFromInputStream(is);
                    return status;
                }else{
                    logger.debug( "訪問失敗："+responseCode);
                }
                
            } catch (Exception e) {
                e.printStackTrace();
            } finally{
                if(conn!=null){
                    conn.disconnect();//釋放鏈接
                }
            }
            return null;
            
        }
        /**
         * 通過字節輸入流返回一個字符串信息
         * @param is
         * @return
         * @throws IOException 
         */
        private static String getStringFromInputStream(InputStream is) throws IOException {
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            byte[] buffer = new byte[1024];
            int len=0;
            while((len=is.read(buffer))!=-1){
                baos.write(buffer, 0, len);
            }
            is.close();
            //String status = baos.toString();// 把流中的數據轉換成字符串, 采用的編碼是: utf-8
            byte[] lens = baos.toByteArray();
            String status = new String(lens,"utf-8");
            baos.close();
            return status;
        }

}