java在liunx下备份mysql数据，恢复数据

备份数据

    public static void exportDatabaseTool(String hostIP, String userName, String password, String savePath, String fileName, String databaseName) 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 -h" + hostIP + " -u" + userName + " -p" + password + " --set-charset=UTF8 " + databaseName);
            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。
                System.out.println("数据库成功备份！！！");
            }
        }catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (bufferedReader != null) {
                    bufferedReader.close();
                }
                if (printWriter != null) {
                    printWriter.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        System.out.println("数据库备份失败！！！");
    }

恢复数据

public static void dbRestore(String ip,String port,String root,String pwd,String dbName,String filePath,String fileName){
        StringBuilder sb = new StringBuilder();
        sb.append("mysql");
        sb.append(" -h "+ip);
        sb.append(" -P"+port);
        sb.append(" -u"+root);
        sb.append(" -p"+pwd);
        sb.append(" "+dbName+" --default-character-set=utf8  <");
        sb.append(" "+fileName);
        System.out.println("命令为："+sb.toString());
        System.out.println("开始还原数据");
        String result = null;
        try {
            String[] cmd = new String[]{sb.toString()};
            Process ps = Runtime.getRuntime().exec(new String[]{"/bin/sh","-c","cd "+filePath+";"+sb.toString()});
            BufferedReader br = new BufferedReader(new InputStreamReader(ps.getInputStream()));
            StringBuffer sbs = new StringBuffer();
            String line;
            while ((line = br.readLine()) != null) {
                //执行结果加上回车
                sbs.append(line).append("\n");
            }
            System.out.println("结果："+sbs.toString());
        } catch (Exception e) {
            e.printStackTrace();
        }
        System.out.println("还原成功！");
    }

执行方法

    public static void main(String[] args) throws Exception {

        //备份数据库
        exportDatabaseTool("数据库ip地址", "账号", "密码", "文件存储路径/", "文件名称.sql", "数据库名称");

        //恢复数据库
        dbRestore("数据库ip地址","数据库端口","账号","密码","数据库名称","文件存储地址","文件名称.sql");

    }