Spring boot - 如何在 Process Builder 中指定 Java 路径

Question

我的系统中有 Java 7 作为默认配置。但是我必须仅在春季启动时使用 Java 8。以下命令在我的终端中运行良好。ubuntu@karthick:~$ JAVA_HOME=/opt/jdk1.8.0_181 mvn spring-boot:run但是当我尝试从 Process Builder 执行它时，它显示错误。代码：ProcessBuilder pb = new ProcessBuilder("JAVA_HOME=/opt/jdk1.8.0_181", "mvn", "spring-boot:run");pb.directory(new File("/home/ubuntu/project/springbootexample"));Process p = pb.start();我收到以下错误error=2, No such file or directory. Stacktrace follows:java.io.IOException: error=2, No such file or directory    at java.lang.UNIXProcess.<init>(UNIXProcess.java:135)    at java.lang.ProcessImpl.start(ProcessImpl.java:130)    at java.lang.ProcessBuilder.start(ProcessBuilder.java:1022)    ...    at grails.plugin.cache.web.filter.PageFragmentCachingFilter.doFilter(PageFragmentCachingFilter.java:198)    at grails.plugin.cache.web.filter.AbstractFilter.doFilter(AbstractFilter.java:63)    at net.bull.javamelody.JspWrapper.invoke(JspWrapper.java:150)    at net.bull.javamelody.JdbcWrapper$DelegatingInvocationHandler.invoke(JdbcWrapper.java:281)    at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:202)    at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:180)    at com.brandseye.cors.CorsFilter.doFilter(CorsFilter.java:82)    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)    at java.lang.Thread.run(Thread.java:744)如何解决问题？

Answer 1

我建议创建一个脚本文件（下面的 test.sh），您可以在其中设置 java home 并添加其他命令来运行 spring boot 并使用以下代码从 java 调用该脚本：

  String[] args = { "/bin/bash", "test.sh"};

        StringBuilder builder = new StringBuilder();

        Process p2 = null;

        String result = null;

        String[] cmd = { "sudo", "-s" };

        Runtime.getRuntime().exec(cmd);

        p2 = Runtime.getRuntime().exec(args);

        BufferedReader reader = new BufferedReader(new 

       InputStreamReader(p2.getInputStream()));

        String line;

        while ((line = reader.readLine()) != null) {

            builder.append(line);

        }

        result = builder.toString();