通过java备份恢复mysql数据库的实现代码

import java.io.bufferedreader;
import java.io.file;
import java.io.fileinputstream;
import java.io.fileoutputstream;
import java.io.ioexception;
import java.io.inputstream;
import java.io.inputstreamreader;
import java.io.outputstream;
import java.io.outputstreamwriter;

public class test {
    public static void main(string[] args) throws ioexception{
        backup("d:\\\\d.sql");
        recover("d:\\\\d.sql");
    }
    public static void backup(string path) throws ioexception{
        runtime runtime = runtime.getruntime();
        //-u后面是用户名，-p是密码-p后面最好不要有空格，-family是数据库的名字
        process process = runtime.exec("mysqldump -u root -p123456 family");
        inputstream inputstream = process.getinputstream();//得到输入流，写成.sql文件
        inputstreamreader reader = new inputstreamreader(inputstream);
        bufferedreader br = new bufferedreader(reader);
        string s = null;
        stringbuffer sb = new stringbuffer();
        while((s = br.readline()) != null){
            sb.append(s+"\\r\\n");
        }
        s = sb.tostring();
        system.out.println(s);
        file file = new file(path);
        file.getparentfile().mkdirs();
        fileoutputstream fileoutputstream = new fileoutputstream(file);
        fileoutputstream.write(s.getbytes());
        fileoutputstream.close();
        br.close();
        reader.close();
        inputstream.close();
    }
    public static void recover(string path) throws ioexception{
        runtime runtime = runtime.getruntime();
        //-u后面是用户名，-p是密码-p后面最好不要有空格，-family是数据库的名字，--default-character-set=utf8，这句话一定的加
        //我就是因为这句话没加导致程序运行成功，但是数据库里面的内容还是以前的内容，最好写上完成的sql放到cmd中一运行才知道报错了
        //错误信息：
        //mysql: character set 'utf-8' is not a compiled character set and is not specified in the '
        //c:\\program files\\mysql\\mysql server 5.5\\share\\charsets\\index.xml' file error 2019 (hy000): can't
        // initialize character set utf-8 (path: c:\\program files\\mysql\\mysql server 5.5\\share\\charsets\\)，
        //又是讨人厌的编码问题，在恢复的时候设置一下默认的编码就可以了。
        process process = runtime.exec("mysql -u root -p123456 --default-character-set=utf8 family");
        outputstream outputstream = process.getoutputstream();
        bufferedreader br = new bufferedreader(new inputstreamreader(new fileinputstream(path)));
        string str = null;
        stringbuffer sb = new stringbuffer();
        while((str = br.readline()) != null){
            sb.append(str+"\\r\\n");
        }
        str = sb.tostring();
        system.out.println(str);
        outputstreamwriter writer = new outputstreamwriter(outputstream,"utf-8");
        writer.write(str);
        writer.flush();
        outputstream.close();
        br.close();
        writer.close();
    }
}