java 执行bat

Question

下面这个java运行不下去，单独运行可以，请指教，gunzip是解压缩命令set PGPASSWORD=ivsadmin@123
gunzip -c d:\update\SMCdatabase_20111213160306.gz | "d:\Program Files\PostgreSQL\9.0\bin\psql" -h 10.166.176.127 -p 5432 -U ivsadmin liangqintest

Answer 1

FileWriter fileWriter = new FileWriter("c:\\importDb.bat");
                mBufWriter = new BufferedWriter(fileWriter);
                String backupDbUrl =
                    dfxConfInfo.getDbPassword() + "\n" + "gunzip -c " + importFileList[0] + " | "
                        + dfxConfInfo.getImportDbUrl();
                mBufWriter.write(backupDbUrl);
                mBufWriter.newLine();
                mBufWriter.flush();
                mBufWriter.close();
                Process process = Runtime.getRuntime().exec("c:\\importDb.bat");

Answer 2

process调用下试试
getErrorStream
getInputStream

Answer 3

用getErrorStream输出java.io.FileInputStream@18db58
不知道对不对