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 + "\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 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 + "\r\n");     }     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 + "\r\n");                    }                    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();                }                   }      }