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HomeDatabaseMysql Tutorial使用mysqldump 对数据库进行备份的乱码问题

最近在做项目的工程中,由于系统中需要提供数据库备份的功能,经过网上一番搜索,觉得采用简单的mysqldump

最近在做项目的工程中,由于系统中需要提供数据库备份的功能,经过网上一番搜索,觉得采用简单的mysqldump

相关阅读:

Linux下通过mysqldump备份MySQL数据库成sql文件

Linux中使用mysqldump对MySQL数据库进行定时备份

(1)java代码

String backupSQL = "cmd /c mysqldump -urootdd --extended-insert=false  -hlocalhost fts> "
          + DB_BACKUPFILE_PATH + " ";
   Runtime runtime = Runtime.getRuntime();
   System.out.println(runtime.exec(backupSQL));

通过执行上面的代码段的出来的文件中,中文部分都已乱码出现,起初怀疑是数据库的编码有关,于是通过以下方式来查询数据库的编码

(2) >show variables like 'character%';

经过以上步骤可以确定数据库的编码是没有问题的,经过再次网上搜索 得到如下结论

使用mysqldump 对数据库进行备份的乱码问题

"如果MySQL服务器上的字符集是 latin1 或者其他的的,mysqldump 出来的中文都是乱码!一个简单的办法是加上默认字符集选项,,如:

mysqldump [-h 127.0.0.1 -P 3307 ] -u username --default-character-set=gbk -p databasename > dumpfile.txt,

--default-character-set 知道数据内容是中文时可以指定为 gbk,这样即使数据库本身设置字符集为 latin1 出来的文件中文也能正常!", 最后将代码改成如下形式

(3)最终java 代码

String backupSQL = "cmd /c mysqldump -urootdd --default-character-set=gbk --opt --extended-insert=false  -hlocalhost fts> "
                    + DB_BACKUPFILE_PATH + " ";
            Runtime runtime = Runtime.getRuntime();
            System.out.println(runtime.exec(backupSQL));

经过以上修改,终于搞定,导出的文件中的中文时正常显示的

linux

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