從服務器上下載apk

public class DownLoadApk {
public static final String GET_URL = "http://10.125.159.220/api/builds/latest";

public static String readContentFromGet() throws IOException {
	String getURL = GET_URL;
	String laststr = "";
	URL getUrl = new URL(getURL);
	HttpURLConnection connection = (HttpURLConnection) getUrl
			.openConnection();
	connection.connect();
	BufferedReader reader = new BufferedReader(new InputStreamReader(
			connection.getInputStream(), "utf-8"));
	String lines;
	while ((lines = reader.readLine()) != null) {
		// lines = new String(lines.getBytes(), "utf-8");
		laststr += lines;
		laststr = laststr.substring(11, laststr.length() - 1);
	}
	reader.close();
	connection.disconnect();
	// System.out.println("Contents of get request ends");
	return laststr;
    }

        public static String getApkUrl(ApkInfo apkInfo) throws IOException {
	String downUrl = "";
	String[] url = getAllUrl();
	String[] tem = new String[url.length];

	int j = 0;
	for (int i = 0; i < url.length; i++) {
		if ((url[i].indexOf(apkInfo.getName()) != -1)
				&& (url[i].indexOf(apkInfo.getVersion()) != -1)
				&& (url[i].indexOf(apkInfo.getPaltform()) != -1)
				&& (url[i].indexOf(apkInfo.getKey()) != -1)
				&& (url[i].indexOf(apkInfo.getDate()) != -1)) {
			if (url[i] != null) {
				tem[j] = url[i];
				j++;
			}
		        }

	        }
	        if (tem[1] != null) {
		for (int i = 0; i < tem.length; i++) {
			if (tem[i] != null) {
				System.err.println(tem[i]);
			}
		    }
		    System.out.println("please add more parameters**********");
	        } else {
		    downUrl = tem[0];
	        }
	    System.out.println(downUrl);
	    return downUrl;
    }

/*

• read Json data to array */ public static String[] getAllUrl() throws IOException { String str = readContentFromGet(); JSONArray array = JSONArray.fromObject(str); JSONObject jsonObject; String[] url = new String[array.size()]; for (int i = 0; i < array.size(); i++) { jsonObject = array.getJSONObject(i); url[i] = jsonObject.getString("url"); } return url; }

  public static void downApk(ApkInfo apkInfo, String apkUrl, String downPath) {
   try {
   	int byteSum = 0;
   	int byteRead = 0;
   	int byteCount = 0;
   	URL url = new URL(apkUrl);
   	URLConnection conn = url.openConnection();
  
   	String path = url.getPath();
   	String fileName = path.substring(path.lastIndexOf("."));
   	fileName = apkInfo.getName() + apkInfo.getDate() + "v"
   			+ apkInfo.getVersion() + fileName;
  
   	byteCount = conn.getContentLength();
   	double len = Double.parseDouble(byteCount + "") / (1024 * 1024);
   	DecimalFormat df = new DecimalFormat("0.##");
   	System.out.println("文件大小：" + df.format(len) + "MB");
  
   	InputStream inStream = conn.getInputStream();
   	FileOutputStream fos = new FileOutputStream(downPath + fileName);
   	byte[] buffer = new byte[1204];
   	System.out.println("文件開始下載....");
   	while ((byteRead = inStream.read(buffer)) != -1) {
   		byteSum += byteRead;
   		// int num = byteSum * 100 / Integer.parseInt(byteCount + "");
   		// System.out.println("已下載" + num + "%....");
   		fos.write(buffer, 0, byteRead);
   	}
   	System.out.println("文件下載完成！");
       } catch (FileNotFoundException e) {
   	e.printStackTrace();
       } catch (IOException e) {
   	e.printStackTrace();
       }
   }
  
       public static String getCurrentDate() {
   String dateString = "";
   SimpleDateFormat format = new SimpleDateFormat("yyyyMMdd");
   dateString = format.format(new java.util.Date());
   return dateString;
   }

  // public static void main(String[] args) throws IOException { // ApkInfo apkInfo = new ApkInfo(); // apkInfo.setName("LenovoMusic"); // apkInfo.setVersion("3.0"); // apkInfo.setPaltform("common"); // apkInfo.setKey("dv2"); // apkInfo.setDate(getCurrentDate()); // downApk(apkInfo, getApkUrl(apkInfo)); // } }

  public class ApkInfo {
   private String name;
   private String version;
   private String paltform;
   private String key;
   private String date;
  
   public String getDate() {
   return date;
   }
  
   public void setDate(String date) {
   this.date = date;
   }
  
   public String getName() {
   return name;
   }
  
   public void setName(String name) {
   this.name = name;
   }
  
   public String getVersion() {
   return version;
   }
  
   public void setVersion(String version) {
   this.version = version;
   }
  
   public String getPaltform() {
   return paltform;
   }
  
   public void setPaltform(String paltform) {
   this.paltform = paltform;
   }
  
   public String getKey() {
   return key;
   }
  
   public void setKey(String key) {
   this.key = key;
   }
   }