mysql数据库备份及还原详解编程语言

package com.gd.test; 
 
import java.io.BufferedReader; 
import java.io.FileOutputStream; 
import java.io.InputStream; 
import java.io.InputStreamReader; 
import java.io.OutputStreamWriter; 
 
public class Bcad { 
    public static void main(String[] args) { 
        try { 
            Runtime rt = Runtime.getRuntime(); 
 
            // 调用 调用mysql的安装目录的命令 
            Process child = rt.exec("D:/MySQL/bin/mysqldump.exe -h 121.28.144.94 -uroot -psanmi123 gdsite"); 
            // 设置导出编码为utf-8。这里必须是utf-8 
            // 把进程执行中的控制台输出信息写入.sql文件，即生成了备份文件。注：如果不对控制台信息进行读出，则会导致进程堵塞无法运行 
            InputStream in = child.getInputStream();// 控制台的输出信息作为输入流 
 
            InputStreamReader xx = new InputStreamReader(in, "utf-8"); 
            // 设置输出流编码为utf-8。这里必须是utf-8，否则从流中读入的是乱码 
 
            String inStr; 
            StringBuffer sb = new StringBuffer(""); 
            String outStr; 
            // 组合控制台输出信息字符串 
            BufferedReader br = new BufferedReader(xx); 
            while ((inStr = br.readLine()) != null) { 
                sb.append(inStr + "/r/n"); 
            } 
            outStr = sb.toString(); 
 
            // 要用来做导入用的sql目标文件： 
            FileOutputStream fout = new FileOutputStream("c://test.sql"); 
            OutputStreamWriter writer = new OutputStreamWriter(fout, "utf-8"); 
            writer.write(outStr); 
            writer.flush(); 
            in.close(); 
            xx.close(); 
            br.close(); 
            writer.close(); 
            fout.close(); 
 
            System.out.println("-------------------------"); 
 
        } catch (Exception e) { 
            e.printStackTrace(); 
        } 
    } 
}

public static void restore(String databaseName) { 
        try { 
            Runtime runtime = Runtime.getRuntime(); 
            Process process = runtime 
                    .exec("e://MySQL//bin//mysql.exe -hlocalhost -uroot -p123 --default-character-set=utf8 " 
                            + databaseName); 
            OutputStream outputStream = process.getOutputStream(); 
            BufferedReader br = new BufferedReader(new InputStreamReader( 
                    new FileInputStream("C://test.sql"), "utf-8")); 
            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(); 
        } catch (UnsupportedEncodingException e) { 
            e.printStackTrace(); 
        } catch (FileNotFoundException e) { 
            e.printStackTrace(); 
        } catch (IOException e) { 
            e.printStackTrace(); 
        } 
    }