论坛上见到的，记录一下，以备後用
Process p = Runtime.getRuntime().exec( MProperties.DS_EXE_PATH + "/dsjob -run -wait -param lowDate=" + lowDate + " -param highDate=" + highDatePlusOne + " -param dsOutDir=" + MProperties.DS_OUT_DIR + " -param IDB_user=" +MProperties.IDB_USER + " -param IDB_pass=" +
MProperties.IDB_PASS + " " + MProperties.DS_PROJECT + " " + MProperties.DS_JOB);
p.waitFor();
return p.exitValue() == 0;

另外如果有RTI，更好的方法如下：
The best way for this to be accomplished is by using the RTI (Real Time Integration) capabilities that we added in 7.x. This allows you to fully expose a DataStage job as a service, to be then invoked via several different mechanisms, depending on your needs....

.....the job can be exposed as a classic web service, using SOAP over HTTP...we generate and publish the WSDL for this within RTI...

....the job can be exposed via our EJB binding and called appropriately

....the job can be exposed for contact via JMS, and either passed a text message or SOAP envelope....

Not only can you simply pass job parameters via this architecture, you can actually have the entire transformation job itself (columns on the ultimate input and output links) passed and returned to your calling client.

Additionally, the entire job control API, which you may already be familiar with in its API or command line implementations, has been exposed as a set of methods available via Web Services.
主要就是通过将job包装为web service或EJB或JMS来调用，可以传参数，还可以将整个job本身（最终的输入和输出链接）作为参数传递或者返回到调用的客户端。