java调用pg_dump备份postgre数据库问题

java调用pg_dump备份postgre数据库问题

在项目中,用java调用pg_dump进行postgre数据库备份,在本地机上跑,可以正确运行,发布
到其他机器上之后,会在调用外部程序,进行备份的地方卡住,代码如下:


/**备份数据库**/

File workPath=fetchDBInstallPath();//获取数据库的pg_dump工具的目录
if(workPath==null){
return false;

}
String dbBackupPath=fetchDBBackupPath();
StringBuffer sb=new StringBuffer();

sb.append( cmd /c pg_dump -h 127.0.0.1 -p 5432 -U postgres -F c -b -v
-f ).append(dbBackupPath+ \\ +fileName+ .backup ).append( dbname );

log.info( ********************************************** );

log.info( workPath= +workPath); www.docin.com

log.info( command: +sb.toString());


log.info( ********************************************** );

Process
process=Runtime.getRuntime().exec(sb.toString(),null,workPath);
log.info( ~~~~~~~~~~~~~~~~~~~~~~~~~~~ );

StreamGobbler errorGobbler = new
StreamGobbler(process.getErrorStream(), Error ); //线程,用于输出外部程序的输
出内容,防止阻塞


StreamGobbler outputGobbler = new
StreamGobbler(process.getInputStream(), Output ); //线程,用于输出外部程序的输
出内容,防止阻塞


log.info( +++++++++++++++++++++++++++ );


errorGobbler.start();


outputGobbler.start();


process.waitFor();


if(process.exitValue()!=0){


return false;


} www.docin.com


从部署机器上的日志来看,运行完成了log.info( +++++++++++++++++++++++++++ );

之后,线程没有正确运行,也就是说,应该是外部程序被阻塞了,然后我把命令行中的-v参数
去掉,不让外部程序输出内容,可还是会阴塞,具体日志如下:

2012-10-12 10:23:43.551 INFO] **********************************************
2012-10-12 10:23:43.551 INFO] workPath=C:\Program
Files\hikvision\CMS\database\bin


2012-10-12 10:23:43.551 INFO] command:cmd /c pg_dump -h 127.0.0.1 -p 5432 -U
postgres -F c -b -v -f c:\backup\test.backup 5221cms


2012-10-12 10:23:43.551 INFO] **********************************************


2012-10-12 10:23:43.711 INFO] ~~~~~~~~~~~~~~~~~~~~~~~~~~~

2012-10-12 10:23:43.711 INFO] +++++++++++++++++++++++++++
------最佳解决方案--------------------------------------------------------


在命令前添加一行
www.docin.com

set PGPASSWORD= password