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android客户端把SD卡文件上传到服务器端并保存在PC硬盘文件夹中

Android互联网报道阅读(103)2018-04-28 收藏0次评论

在局域网内,实现从android客户端把手机SD卡上的文件上传到PC服务器端,并保存在PC硬盘的指定文件夹下。同时把PC端硬盘文件的目录和对文件的描述信息保存在mysql数据库中。


1、客户端关键代码

(1)获得SD卡上的文件

 /**
		 * 获得文件路径和状态信息
		 * 
		 * @return
		 */
		private String getFiles() {
			File path = null;
			
			// 判断SD卡是否存在可用
			if (Environment.getExternalStorageState().equals(
					Environment.MEDIA_MOUNTED)) {
				path = Environment.getExternalStorageDirectory();
				
				File[] files = path.listFiles();
				for (File file : files) {
					// 把路径如入集合中

					if (file.getPath() != null
							&& (file.getPath()
									.substring(file.getPath().lastIndexOf("/") + 1)
									.equals("DATA_RECORD.pcm"))) {
						return file.getPath();
						
					}
					
				}
			} else {

				Toast.makeText(ASRMainActivity.this, "SD卡不可用!", 300).show();
			}

			return null;

		}

(2)实现文件上传的方法

private void fileUpLoad() {
		srcPath=getFiles();
		new AsyncTask() {
			
			String end = "
";
			String twoHyphens = "--";
			String boundary = "****************";
			HttpURLConnection con;
			URL url = null;
			InputStreamReader isr = null;
			FileInputStream fis;
			DataOutputStream dos;

			@Override
			protected Void doInBackground(Void... params) {
				String record_content=mSharedPreferences.getString("content","");
				Log.i("测试",record_content);
				try {
					// 首先指定服务器的路径URL
					url = new URL(
							"https://192.168.1.109:8080/MFCC/SpeechRecognizeAction?action_flag=upload&record_content="+record_content);
					// 打开一个连接
					con = (HttpURLConnection) url.openConnection();
					// 设置一些属性
					con.setDoInput(true);
					con.setDoOutput(true);
					con.setDefaultUseCaches(false);
					con.setRequestMethod("POST");
					con.setRequestProperty("Connection", "Keep-Alive");
					con.setRequestProperty("Charset", "UTF-8");
					con.setRequestProperty("Content-Type",
							"multipart/form-data;boundary=" + boundary);
					con.setReadTimeout(3000);
//
				
 
					// 创建一个新的数据输出流,将数据写入指定基础输出流
					dos = new DataOutputStream(con.getOutputStream());
					// 将字符串按字节顺序 写出 到基础输出流中
					// dos.writeBytes("Content-Disposition: form-data; name="uploads";filename=1.txt");
					// dos.writeBytes("Content-Disposition: form-data;");
					dos.writeBytes(twoHyphens + boundary + end);
					dos.writeBytes("Content-Disposition: form-data; name="file"; filename=""
							+ srcPath.substring(srcPath.lastIndexOf("/") + 1)
							+ """ + end);
					Log.i("tag",
							"Content-Disposition: form-data; name="file"; filename=""
									+ srcPath.substring(srcPath
											.lastIndexOf("/") + 1) + """ + end);
					dos.writeBytes(end);
					// dos.writeBytes("1.txt");
					// dos.writeBytes("Jonny-Resume.docx");
					// 读取写到输出流中的数据
					fis = new FileInputStream(srcPath);
					byte[] buffer = new byte[8192]; // 8k
					int count = 0;
					count = fis.read(buffer);
					Log.i("tag", count + "  ********************");
					while ((count = fis.read(buffer)) != -1) {
						dos.write(buffer, 0, count);
						Log.i("tag", "ok");
					}
					fis.close();
					dos.writeBytes(end);
					dos.writeBytes(twoHyphens + boundary + twoHyphens + end);

					dos.flush();

					// 反馈给客户端的信息
					InputStream is = con.getInputStream();

					isr = new InputStreamReader(is, "utf-8");
				} catch (Exception e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				return null;
			}

			@Override
			protected void onPostExecute(Void result) {
				String result2 = null;
				StringBuffer stringBuffer = null;
				BufferedReader br = null;
				if (isr == null) {
					return;
				}
				try {
					br = new BufferedReader(isr);
					stringBuffer = new StringBuffer();

					while ((result2 = br.readLine()) != null) {
						stringBuffer.append(result2);
					}
				} catch (Exception e) {
					// TODO Auto-generated catch block
					e.printStackTrace();

				} finally {

					if (dos != null) {
						try {
							dos.close();
						} catch (IOException e) {
							// TODO Auto-generated catch block
							e.printStackTrace();
						}

					}
					if (fis != null) {
						try {
							fis.close();
						} catch (IOException e) {
							// TODO Auto-generated catch block
							e.printStackTrace();
						}

					}

				}
				if (stringBuffer != null)
					Toast.makeText(ASRMainActivity.this,
							new String(stringBuffer), Toast.LENGTH_LONG).show();
				btn_uploadFile.setEnabled(true);

			}

		}.execute();

	}

服务器端关键代码:

/**
	 * 上传文件到PC,并把相关的文件信息写如数据库
	 * @param request
	 * @param response
	 */
	private void uploadFile(HttpServletRequest request, HttpServletResponse response) {
		String content = request.getParameter("record_content");
		PrintWriter printWriter=null;
	 
		
		DiskFileItemFactory diskFileItemFactory = new DiskFileItemFactory();// 实例化一个文件工厂
		// 构建一个文件上传类
		ServletFileUpload servletFileUpload = new ServletFileUpload(
				diskFileItemFactory);// 生成一个处理文件上传的servlet对象
		servletFileUpload.setFileSizeMax(3 * 1024 * 1024);
		servletFileUpload.setSizeMax(6 * 1024 * 1024);// 上传文件总大小

		try {
			// 分析请求,并得到上传文件的FileItem对象
			printWriter=response.getWriter();
			List items = servletFileUpload.parseRequest(request);
			Iterator e = items.iterator();
			while (e.hasNext()) {
				FileItem item = e.next();

				if (item.getName() != null && !item.getName().equals("")) {
					

					File file = new File("E://rawSpeechRecordData//");
					File newFile = null;

					if (!file.exists()) {
						file.mkdir();
						if (file.isDirectory()) {
							SimpleDateFormat format = new SimpleDateFormat(
									"yyyyMMddHHmmss");
							String date = format.format(new Date(System
									.currentTimeMillis()));
							newFile = new File(
									"E://rawSpeechRecordData//rawdata" + date
											+".pcm");

							item.write(newFile);
							
							//数据存入数据库
							System.out.println("**********************"
									+ newFile.getPath());

							mFileInfoDao.addFilePathInfos(newFile.getPath(), content);
							printWriter.write("数据提交成功!");
							System.out.println(file);
							System.out
									.println("Content-Disposition: form-data; name="file"; filename="");
							System.out.println("**********************");
							
						}
						
					} else {
						if (file.isDirectory()) {
							SimpleDateFormat format = new SimpleDateFormat(
									"yyyyMMddHHmmss");
							String date = format.format(new Date(System
									.currentTimeMillis()));
							newFile = new File(
									"E://rawSpeechRecordData//rawdata" + date
											+".pcm");


							item.write(newFile);
							//数据存入数据库
							mFileInfoDao.addFilePathInfos(newFile.getPath(), content);
							printWriter.write("数据提交成功!");
							System.out.println("**********************"
									+ newFile.getPath());
							System.out.println(file);
							System.out
									.println("Content-Disposition: form-data; name="file"; filename="");
							System.out.println("**********************");
						}
					}

				}
			}
			
			

		} catch (FileUploadException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}



3、数据库设计代码:

(1)数据库操作接口定义

public interface FileInfoDao {
	/**
	 * 添加文件路径到数据库
	 * @param filePath 文件路径
	 * @param content录音的详细信息
	 */
	public void addFilePathInfos(String filePath,String content);
	/**
	 * 删除一条录音的路径信息
	 * @param content 录音的详细信息
	 */
	public void deleteAFilePathInfo(String content);
	/**
	 * 删除所有的录音文件路径
	 */
	public void deleteAllFilePathInfos();
	/**
	 * 查询所有的文件路径
	 * @return
	 */
	public List> getAllFilePaths();

}

(2)数据库操作实现类

public class FileInfoDaoimpl implements FileInfoDao {
	// 表示定义数据库的用户名
	private final String USERNAME = "root";
	// 定义数据库的密码
	private final String PASSWORD = "admin";
	// 定义数据库的驱动信息
	private final static String DRIVER = "com.mysql.jdbc.Driver";
	// 定义数据库连接
	private static Connection mConnection;
	// 定义访问数据库的地址
	private final String URL = "jdbc:mysql://192.168.1.109:3306/fileinfos";
	// 定义sql语句的执行对象
	private PreparedStatement pstmt;
	// 定义查询返回的结果集合
	private ResultSet resultSet;

	public FileInfoDaoimpl() {
		// 加载驱动
		try {
			Class.forName(DRIVER);
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}

	@Override
	public void addFilePathInfos(String filePath, String content) {
		PreparedStatement preparedStatement = null;
		try {
			// 获得数据库连接
			mConnection = DriverManager.getConnection(URL, "root", "admin");
			// 获得SQL语句执行对象
			preparedStatement = mConnection
					.prepareStatement("insert into filepaths(file_path,record_content) values(?,?)");
			// 设置参数
			preparedStatement.setString(1, filePath);
			preparedStatement.setString(2, content);
			// 执行SQL语句
			preparedStatement.execute();

		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			if (preparedStatement != null) {
				try {
					preparedStatement.close();
					preparedStatement = null;
				} catch (SQLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}

			}
			if (mConnection != null) {
				try {
					mConnection.close();
					mConnection = null;
				} catch (SQLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}

			}

		}

	}

	@Override
	public void deleteAFilePathInfo(String content) {
		PreparedStatement preparedStatement=null;
		//获得数据库连接
		try {
			mConnection=DriverManager.getConnection(URL,"root","admin");
			//获得SQL语句执行对象
			 preparedStatement=mConnection.prepareStatement("delete from filepaths where record_content=?");
			//设置参数
			preparedStatement.setString(1, content);
			preparedStatement.execute();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{
			if(preparedStatement!=null){
				try {
					preparedStatement.close();
					preparedStatement=null;
				} catch (SQLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				
			}
			
			if(mConnection!=null){
				try {
					mConnection.close();
					mConnection=null;
				} catch (SQLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				
			}
			
		}

	}

	@Override
	public void deleteAllFilePathInfos() {
		PreparedStatement preparedStatement=null;
		try {
			mConnection=DriverManager.getConnection(URL, USERNAME,PASSWORD);
			preparedStatement=mConnection.prepareStatement("delete from filepaths");
			preparedStatement.execute();
			
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{
			
			if(preparedStatement!=null){
				try {
					preparedStatement.close();
					preparedStatement=null;
				} catch (SQLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				
			}
			
			if(mConnection!=null){
				try {
					mConnection.close();
					mConnection=null;
				} catch (SQLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				
			}
		}

	}

	@Override
	public List> getAllFilePaths() {
		PreparedStatement preparedStatement=null;
		List> results=new ArrayList>();
		HashMap result=null;
		try {
			mConnection=DriverManager.getConnection(URL, USERNAME, PASSWORD);
			preparedStatement=mConnection.prepareStatement("select file_path,record_content from filepaths");
			//查询
			resultSet= preparedStatement.executeQuery();
			
			while(resultSet.next()){
				result=new HashMap();
				result.put("filepath", resultSet.getString("file_path"));
				result.put("record_content", resultSet.getString("record_content"));
				results.add(result);
				result=null;
				
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{
			
			if(preparedStatement!=null){
				try {
					preparedStatement.close();
					preparedStatement=null;
				} catch (SQLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				
			}
			
			if(mConnection!=null){
				try {
					mConnection.close();
					mConnection=null;
				} catch (SQLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				
			}
		}
		return results;
	}

}

(3)数据库操作对象的静态工厂方法(单例模式)

public class FilePathInfosDaoFactory {
	private static FileInfoDao mFileInfoDaoimpl;

	/**
	 * 获得数据库操作单例对象
	 * 
	 * @return
	 */
	public static FileInfoDao getInstanse() {

		if (mFileInfoDaoimpl == null) {
			mFileInfoDaoimpl = new FileInfoDaoimpl();
		}
		return mFileInfoDaoimpl;
	}

}



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