java 实现mysql数据库备份与还原

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备份MySQL数据库的命令

mysqldump -hhostname -uusername -ppassword databasename > backupfile.sql


备份MySQL数据库为带删除表的格式
备份MySQL数据库为带删除表的格式，能够让该备份覆盖已有数据库而不需要手动删除原有数据库。

mysqldump -–add-drop-table -uusername -ppassword databasename > backupfile.sql


直接将MySQL数据库压缩备份

mysqldump -hhostname -uusername -ppassword databasename | gzip > backupfile.sql.gz


备份MySQL数据库某个(些)表

mysqldump -hhostname -uusername -ppassword databasename specific_table1 specific_table2 > backupfile.sql


同时备份多个MySQL数据库

mysqldump -hhostname -uusername -ppassword –databases databasename1 databasename2 databasename3 > multibackupfile.sql


仅仅备份数据库结构

mysqldump –no-data –databases databasename1 databasename2 databasename3 > structurebackupfile.sql


备份服务器上所有数据库

mysqldump –all-databases > allbackupfile.sql


还原MySQL数据库的命令

mysql -hhostname -uusername -ppassword databasename < backupfile.sql


还原压缩的MySQL数据库

gunzip < backupfile.sql.gz | mysql -uusername -ppassword databasename


将数据库转移到新服务器

mysqldump -uusername -ppassword databasename | mysql –host=*.*.*.* -C databasename

@Testpublic void aa(){try {//InputStream in = new BufferedInputStream(new FileInputStream("src/main/resources/config.properties"));//Properties p = new Properties();//p.load(in);//System.out.println(p.get("jdbc_password"));Runtime rt = Runtime.getRuntime();              String cmd ="mysqldump -h localhost -uroot -p1234 zjcpa > e:/mysql.sql";             Process process = rt.exec("cmd /c " +cmd);           /* InputStreamReader isr = new InputStreamReader(process.getErrorStream());              LineNumberReader input = new LineNumberReader(isr);              String line;              while((line = input.readLine())!= null){                  System.out.println(line+"~~~~~~~~~~");              }  */} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}

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