java备份mysql数据库
public boolean backup() {//备份try {Runtime rt = Runtime.getRuntime();String mysql = "mysqldump -uroot -p123456 db";// 调用 mysql 的 cmd:Process child = rt.exec("cmd /c "+mysql);// 设置导出编码为utf8。这里必须是utf8// 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, "utf8");// 设置输出流编码为utf8。这里必须是utf8，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:/db.sql");OutputStreamWriter writer = new OutputStreamWriter(fout, "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in.close();xx.close();br.close();writer.close();fout.close();System.out.println("/* Output OK! */");String error="备份成功!";StrError = (new String(error.getBytes("ISO-8859-1"),"UTF-8"));} catch (Exception e) {e.printStackTrace();StrError=StrError+"failure!<br>";}return true;}public boolean load() {//还原try {String fPath = "c:/db.sql";Runtime rt = Runtime.getRuntime();// 调用 mysql 的 cmd:Process child = rt.exec("mysql -uroot -p123456 db ");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("/* Load OK! */");StrError=StrError+"备份成功!<br>".getBytes("gb2312");} catch (Exception e) {e.printStackTrace();StrError=StrError+"failure!<br>";}return true;}
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