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src/main/java/com/ym/mec/collectfee/utils/ShortUrlUtil.java

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+package com.ym.mec.collectfee.utils;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.PrintWriter;
+import java.net.URL;
+import java.net.URLConnection;
+import com.alibaba.fastjson.JSON;
+import com.alibaba.fastjson.JSONArray;
+import com.alibaba.fastjson.JSONObject;
+ 
+public class ShortUrlUtil {
+ 
+    static String actionUrl = "http://api.t.sina.com.cn/short_url/shorten.json";
+    static String APPKEY = "2815391962,31641035,3271760578,3925598208";
+    public static void main(String[] args) {
+//        String longUrl = "http://pay.dayaedu.com/?schoolId=2&classId=10381&cityId=1302";
+//        Test tw = new Test();
+//        System.out.println(tw.sinaShortUrl(longUrl));
+    }
+ 
+    public static String sinaShortUrl(String longUrl){
+        longUrl = java.net.URLEncoder.encode(longUrl);
+        String appkey = APPKEY;
+        String[] sourceArray = appkey.split(",");
+        for(String key:sourceArray){
+            String shortUrl = sinaShortUrl(key,longUrl);
+            if(shortUrl != null){
+                return shortUrl;
+            }
+        }
+        return null;
+    }
+     
+    public static String sinaShortUrl(String source, String longUrl){
+        String result = sendPost(actionUrl, "url_long="+longUrl+"&source="+source);
+        if(result==null || "".equals(result)){
+            return "";
+        }
+        JSONArray jsonArr = JSON.parseArray(result);
+        JSONObject json = JSON.parseObject(jsonArr.get(0).toString());
+        String ret = json.get("url_short").toString();
+        return ret;
+    }  
+     
+    /**
+     * 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
+            URLConnection conn = 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);
+            // 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();
+            }
+        }
+        return result;
+    }   
+     
+}