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");http://www.huiyi8.com/jiaoben/          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();      }  }