How java executes shell commands locally in linux

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one。 Take springboot as an example, create the code 1.IExecCommandServer:public interface IExecCommandServer {void execCommand (String cmd);} 2.ExecCommandServerImp:@Servicepublic class ExecCommandServerImp implements IExecCommandServer {@ Override public void execCommand (String cmd) {try {Runtime rt = Runtime.getRuntime (); Process proc = rt.exec (cmd,null,null); InputStream stderr = proc.getInputStream (); InputStreamReader isr = new InputStreamReader (stderr, "GBK") BufferedReader br = new BufferedReader (isr); String line= ""; while ((line= br.readLine ())! = null) {System.out.println (line);}} catch (Exception e) {e.printStackTrace () } 3.ExecCommandController:@CrossOrigin@RestController@RequestMapping ("/ linux") public class ExecCommandController {@ Autowired private IExecCommandServer execCommandServer; @ GetMapping ("/ exec") public ResultMap execCommand (String cmd) throws Exception {execCommandServer.execCommand (cmd); return Result.success ("ok");}} II, execute the example http://192.168.142.222:8086/linux/exec?cmd=ls / mnt

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