java mysql数据库备份还原代码

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import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
public class TestMysql {
 
 public static void main(String[] args) {
  System.out.println("开始备份...");
  backup();
  System.out.println("备份成功...");
  
  System.out.println("开始还原...");
  load1();
  System.out.println("还原成功...");
 }
 
 public static void backup() {
  try {
   Runtime rt = Runtime.getRuntime();
   // 调用 调用mysql的安装目录的命令
   Process child = rt
     .exec("E://xampp//mysql//bin//mysqldump.exe -h localhost -uroot -p  ultrax");
   // 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 + "rn");
   }
   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 load() {
  try {
   String fPath = "c:/test.sql";
   Runtime rt = Runtime.getRuntime();
   // 调用 mysql 安装目录的命令
   Process child = rt.exec("E://xampp//mysql//bin//mysql -u root -p cdcol");
  
   OutputStream out = child.getOutputStream();// 控制台的输入信息作为输出流
   String inStr;
   StringBuffer sb = new StringBuffer("");
   String outStr;
   BufferedReader br = new BufferedReader(new InputStreamReader(
     new FileInputStream(fPath),"utf-8"));
   while ((inStr = br.readLine()) != null) {
    sb.append(inStr + "rn");
   }
   outStr = sb.toString();
   System.out.println(outStr);
   OutputStreamWriter writer = new OutputStreamWriter(out,"utf-8");
   System.out.println("7777777777777777777777777777777777777");
   writer.write(outStr);
   System.out.println("888888888888888888888888888888888888888");
   writer.flush();
   out.close();
   br.close();
   writer.close();
   System.out.println("");
  } catch (Exception e) {
   e.printStackTrace();
  }
 }
 
 public static void load1() {      
        try {      
            String fPath = "c:/test.sql";    
            Runtime rt = Runtime.getRuntime();      
     
            // 调用 mysql 的 cmd:      
            Process child = rt.exec("E://xampp//mysql//bin//mysql.exe -uroot -p cdcol ");      
            OutputStream out = child.getOutputStream();//控制台的输入信息作为输出流      
            String inStr;      
            StringBuffer sb = new StringBuffer("");      
            String outStr;      
            BufferedReader br = new BufferedReader(new InputStreamReader(      
                    new FileInputStream(fPath),"utf8"));      
            while ((inStr = br.readLine()) != null) {      
                sb.append(inStr + "rn");      
            }      
            outStr = sb.toString();      
     
            OutputStreamWriter writer = new OutputStreamWriter(out,"utf8");      
            writer.write(outStr);      
            // 注：这里如果用缓冲方式写入文件的话，会导致中文乱码，用flush()方法则可以避免      
            writer.flush();      
            // 别忘记关闭输入输出流      
            out.close();      
            br.close();      
            writer.close();      
     
            System.out.println("");      
     
        } catch (Exception e) {      
            e.printStackTrace();      
        }      
     
    } 
 
} 

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