java 实现mysql数据库备份与还原

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

@Test
public 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 block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}