直接粘貼的代碼示例的InputStream閱讀:使用的Runtime.exec()啓動WebSphere的wsadmin.bat - 掛起,而從工藝
Runtime rt = Runtime.getRuntime();
path = "c:\IBM\WebSphere\AppServer\profiles\STSCDmgrProfile\bin\";
cmd = path + "wsadmin";
String cmdString = cmd
+ " -host "
+ host
+ " -port "
+ port
+ " -username "
+ username
+ " -password "
+ password
+ " "
+ "-f" + "c:/IBM/WebSphere/AppServer/profiles/STSCDMgrProfile/temp/mergedScripts.jy"
+ " -lang "
+ lang
+ " -tracefile logs/ssc_wsadmin_trace.txt -appendtrace true";
_logger.finer(cmdString.replaceAll(" " + password, " <password>"));
Process proc = rt.exec(cmdString);
_logger.finer("Launched process");
stdInput = new BufferedReader(new InputStreamReader(proc
.getInputStream()));
stdError = new BufferedReader(new InputStreamReader(proc
.getErrorStream()));
// read the output from the command
String sIn = "";
**while ((sIn = stdInput.readLine()) != null) {**
_logger.log(Level.FINE, "runJCommand stin ==>", sIn);
}
但是它掛起,而這樣做從stdInput的readLine()。以上突出顯示。以下是我在跟蹤日誌中看到:
[7/30/13 23:48:04:937 GMT-12:00] 000000a6 ThreadMonitor W WSVR0605W: Thread "WebContainer : 1" (00000175) has been active for 664085 milliseconds and may be hung. There is/are 1 thread(s) in total in the server that may be hung.
at java.io.FileInputStream.readBytes(Native Method)
at java.io.FileInputStream.read(FileInputStream.java:223)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:267)
at java.io.BufferedInputStream.read(BufferedInputStream.java:328)
at sun.nio.cs.StreamDecoder$CharsetSD.readBytes(StreamDecoder.java:464)
at sun.nio.cs.StreamDecoder$CharsetSD.implRead(StreamDecoder.java:506)
at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:234)
at java.io.InputStreamReader.read(InputStreamReader.java:188)
at java.io.BufferedReader.fill(BufferedReader.java:147)
at java.io.BufferedReader.readLine(BufferedReader.java:310)
**at java.io.BufferedReader.readLine(BufferedReader.java:373)**
at com.ibm.sametime.console.admin.plugins.wsadmin.SSCWsAdmin.runJCommand(SSCWsAdmin.java:924)
如果我運行相同的mergedScripts.jy
(即我在上面的調用Java代碼中),手動通過命令行,然後將它成功執行,並在幾分鐘完成。然而,通過Java代碼它永遠運行。
可能的原因是什麼?在上述情況下STDIN究竟是什麼?