Shulou(Shulou.com)06/01 Report--

In this issue, the editor will bring you about how to independently implement the Java program in Linux. The article is rich in content and analyzes and narrates it from a professional point of view. I hope you can get something after reading this article.

In Linux systems, for various reasons, java programs need to be executed separately instead of in the web container environment. At this time, many container resources cannot be directly accessed, such as data sources configured by database connection pooling, and third-party jar packages needed to run the program.

In this case, you need to set environment variables, such as java path, classpath environment variable, and so on. Special processing is needed for data source configuration, such as data source configuration files, log configuration files, resource file loading and other issues, for example:

#! / bin/bashtempClassPath=$CLASSPATH;flist=/home/smsdp/SohuMbRegist/lib/*.jar;for I in $flist;domypath=$i;CLASSPATH=$CLASSPATH:$mypath;doneCLASSPATH=$CLASSPATH:$tempClassPath;export CLASSPATHexport JAVA_HOME=/usr/local/javacd / home/smsdp/SohuMbRegist/classesnohup $JAVA_HOME/bin/java com.sohu.zxl.ivr.JobService & > / dev/null

The above code is a shell script file:

1. First, declare two variables, tempClassPath as the current environment variable $CLASSPATH,flist as an array of directory files (which can be thought of as an array)

two。 Then concatenate the jar path and assign a value to the current $CLASSPATH environment variable

3. Set environment variabl

4. Enter the class directory

5. Execute the program and output it to the nohup.out virtual file.

After the independent java program is executed, the thread is automatically destroyed. You can find the thread ID when the program is executed by using the command: ps-ef | grep JobService search, but cannot find the thread after execution.

You can set the program execution time and frequency by timing job and crontab. Of course, you can also control the execution time frequency in the java program, but it is more flexible through crontab control. For those whose execution time changes frequently, it is recommended to use crontab control.

The above is how to independently execute the Java program in the Linux shared by the editor. If you happen to have similar doubts, you might as well refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.

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