java实现mysql的导入和导出
public class SqlBackup { public static void main(String[] args) { //backup(); load(); } public static void backup() { try { Runtime rt = Runtime.getRuntime(); // 调用 mysql 的 cmd: Process child = rt .exec("mysqldump -uroot -hlocalhost -p123456 --set-charset=utf8 -t test");// 设置导出编码为utf8。这里必须是utf8。-t是导出数据不导出结构，-d导出结构不导出数据，没有则既导出数据又导出结构 // 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( "e:/test.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! */"); } catch (Exception e) { e.printStackTrace(); } } public static void load() { try { String fPath = "e:/test.sql"; Runtime rt = Runtime.getRuntime(); // 调用 mysql 的 cmd: Process child = rt.exec("mysql -uroot -hlocalhost -p123456 test "); 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! */"); } catch (Exception e) { e.printStackTrace(); } } }?