数据库备份与恢复

数据库备份

	/**
	 * 数据库备份功能
	 * @param savePath 备份路径
	 * @param fileName 文件名
	 * @return
	 * @throws InterruptedException
	 */
    private boolean exportDatabaseTool( String savePath, String fileName) throws InterruptedException {  
        File saveFile = new File(savePath);  
        if (!saveFile.exists()) {// 如果目录不存在  
            saveFile.mkdirs();// 创建文件夹  
        }  
        if(!savePath.endsWith(File.separator)){  
            savePath = savePath + File.separator;  
        }  
          
        PrintWriter printWriter = null;  
        BufferedReader bufferedReader = null;  
        try {  
            printWriter = new PrintWriter(new OutputStreamWriter(new FileOutputStream(savePath + fileName), "utf8"));  
            Process process = Runtime.getRuntime().exec(" mysqldump -h127.0.0.1 -uroot -p123456 --set-charset=UTF8 order_system");  
            InputStreamReader inputStreamReader = new InputStreamReader(process.getInputStream(), "utf8");  
            bufferedReader = new BufferedReader(inputStreamReader);  
            String line;  
            while((line = bufferedReader.readLine())!= null){  
                printWriter.println(line);  
            }  
            printWriter.flush();  
            if(process.waitFor() == 0){//0 表示线程正常终止。  
                return true;  
            }  
        }catch (IOException e) {  
            e.printStackTrace();  
        } finally {  
            try {  
                if (bufferedReader != null) {  
                    bufferedReader.close();  
                }  
                if (printWriter != null) {  
                    printWriter.close();  
                }  
            } catch (IOException e) {  
                e.printStackTrace();  
            }  
        }  
        return false;  
    } 

数据库备份恢复

//还原命令行
		String command = "mysql -hlocalhost -uroot -p123456 --default-character-set=utf8 order_system";
		
		//执行
		boolean isSuccess = recover(command, path);

   /**
     * 数据库还原
     * @param command 命令行
     * @param savePath 还原路径
     * @return
     */
    private boolean recover(String command, String savePath) {
        boolean flag;
        Runtime r = Runtime.getRuntime();
        BufferedReader br = null;
        BufferedWriter bw = null;
        try {
            Process p = r.exec(command);
            OutputStream os = p.getOutputStream();
            FileInputStream fis = new FileInputStream(savePath);
            InputStreamReader isr = new InputStreamReader(fis, "utf-8");
            br = new BufferedReader(isr);
            String s;
            StringBuffer sb = new StringBuffer("");
            while ((s = br.readLine()) != null) {
                sb.append(s + System.lineSeparator());
            }
            s = sb.toString();
            OutputStreamWriter osw = new OutputStreamWriter(os, "utf-8");
            bw = new BufferedWriter(osw);
            bw.write(s);
            bw.flush();
            flag = true;
        } catch (IOException e) {
            flag = false;
            e.printStackTrace();
        } finally {
            try {
                if (null != bw) {
                    bw.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
 
            try {
                if (null != br) {
                    br.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return flag;
    }
}