java 调用命令行 备份mysql数据库

 //方式1
 Stringcommand="D:\\mysql\\bin\\mysqldump-h127.0.0.1-uroot-p-ntd-R-dbname";
 Runtimeruntime=Runtime.getRuntime();
 Processprocess=runtime.exec(command);
 InputStreamReaderreader=newInputStreamReader(process.getInputStream());
 BufferedReaderbuffReader=newBufferedReader(reader);
 StringinStr;
 StringoutStr;
 StringBufferbuffer=newStringBuffer();
 while((inStr=buffReader.readLine())!=null){
 buffer.append(inStr+"\r\n");
 }
 outStr=buffer.toString();
 OutputStreamos=newFileOutputStream("D:\\sql.sql");
 OutputStreamWriterwriter=newOutputStreamWriter(os);
 writer.write(outStr);
 writer.flush();
 reader.close();
 buffReader.close();
 os.close();
 writer.close();

 //方式2
 Stringcommand="cmd/cmysqldump-h127.0.0.1-uroot-p-ntd-R-dbname";
 Runtimeruntime=Runtime.getRuntime();
 Processprocess=runtime.exec(command,null,newFile("D:\\mysql\\bin"));
 InputStreamReaderreader=newInputStreamReader(process.getInputStream());
 BufferedReaderbuffReader=newBufferedReader(reader);
 StringinStr;
 StringoutStr;
 StringBufferbuffer=newStringBuffer();
 while((inStr=buffReader.readLine())!=null){
 buffer.append(inStr+"\r\n");
 }
 outStr=buffer.toString();
 OutputStreamos=newFileOutputStream("D:\\sql.sql");
 OutputStreamWriterwriter=newOutputStreamWriter(os);
 writer.write(outStr);
 writer.flush();
 reader.close();
 buffReader.close();
 os.close();
 writer.close();