java - 从 java 运行 shell 脚本 - 未完成任务

Question

我有一个java程序，它应该启动一个shell脚本。该脚本包含 6 个按顺序执行的任务。 java程序启动脚本并启动(正如我看到的日志)。但 10-15 秒后，执行停止，甚至在 shell 脚本中的第一个任务完成之前。奇怪的是，当我在终端中启动脚本时，脚本运行良好。为了避免在执行脚本时程序挂起的风险，我在单独的线程中启动它。可能的原因是什么？

Java 代码 -

try {   
            log.info("run cmd - "+optionsRun);

            String[] cmdLine = (String[]) optionsRun.toArray(new     String[optionsRun.size()]);

            Process process = Runtime.getRuntime().exec(cmdLine);
            log.info("end run cmd " + this.getScriptPath());

//          
//          BufferedWriter writer = new BufferedWriter(new     OutputStreamWriter(process.getOutputStream()));
//          writer.write("mypwd");
//          writer.flush();
//          writer.close();


            InputStream is = process.getErrorStream();
            String error = inputStreamToStringValue(is);
            log.trace("Eventual error was : " + error);

            InputStream os = process.getInputStream();
        String output = inputStreamToStringValue(os);
            log.info("Eventual output was : " + output);

            if (error!=null & error.length()>0) {
                throw new ActionProcessingException("An error occurred when     running the script :'"+this.getScriptPath()+"' with following error message : "+error);    
            }else {
                log.info("Script run ended successfully.");
            }

shell 脚本看起来是这样的 -

#!/bin/sh
# ./publish <path-to-publish-home-folder> <workspace_id> <start_date> <end_date>
# ./publish <path-to-publish-home-folder> 100011 2010-01-06-12:00:00-CET     2012-01-14-19:00:00-CET

rm -f $1/publish.log
echo 'Start publish' >> $1/publish.log
echo $0 $1 $2 $3 $4 $5 $6 $7 $8 $9 >> $1/publish.log

# lancement de l'export RDF du domaine
cd $1/1-export-domain
echo "Starting export domain with the command - ./export.sh $2" >> $1/publish.log
./export.sh $2

# lancement de l'export des translations du domaine
cd $1/2-export-trans
echo "Starting export domain(translated) with the command - ./export.sh $2" >>         $1/publish.log
./export.sh $2
.....
.....
a couple of more steps like 1 and 2
....

提前致谢，

Answer 1

我不确定，但我会推荐两个链接，可能会帮助您弄清楚。

第一个是关于Runtime.exec()的非常古老的:

http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html

第二个是关于 ProcessBuilder，新类旨在替换 Runtime.exec():

http://www.java-tips.org/java-se-tips/java.util/from-runtime.exec-to-processbuilder.html