I am trying to run a script using Java and ProcessBuilder. When I try to run, I receive the following message: error=2, No such file or directory.
I dont know what I am doing wrong but here is my code (ps: I tried to execute just the script without arguments and the error is the same:
String[] command = {"/teste/teste_back/script.sh, "+argument1+", "+argument+""};
ProcessBuilder p = new ProcessBuilder(command);
try {
// create a process builder to send a command and a argument
Process p2 = p.start();
BufferedReader br = new BufferedReader(new InputStreamReader(p2.getInputStream()));
String line;
log.info("Output of running " + command + " is: ");
System.out.println("Output of running " + command + " is: ");
while ((line = br.readLine()) != null) {
log.info(line);
}
}
Try replacing
String[] command = {"/teste/teste_back/script.sh, "+argument1+", "+argument+""};
with
String[] command = {"/teste/teste_back/script.sh", argument1, argument};
Refer ProcessBuilder for more information.
ProcessBuilder(String... command)
Constructs a process builder with the specified operating system
program and arguments.
You can define a method with ProcessBuilder.
public static Map execCommand(String... str) {
Map<Integer, String> map = new HashMap<>();
ProcessBuilder pb = new ProcessBuilder(str);
pb.redirectErrorStream(true);
Process process = null;
try {
process = pb.start();
} catch (IOException e) {
e.printStackTrace();
}
BufferedReader reader = null;
if (process != null) {
reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
}
String line;
StringBuilder stringBuilder = new StringBuilder();
try {
if (reader != null) {
while ((line = reader.readLine()) != null) {
stringBuilder.append(line).append("\n");
}
}
} catch (IOException e) {
e.printStackTrace();
}
try {
if (process != null) {
process.waitFor();
}
} catch (InterruptedException e) {
e.printStackTrace();
}
if (process != null) {
map.put(0, String.valueOf(process.exitValue()));
}
try {
map.put(1, stringBuilder.toString());
} catch (StringIndexOutOfBoundsException e) {
if (stringBuilder.toString().length() == 0) {
return map;
}
}
return map;
}
You can call the function to execute shell command or script
String cmds = "ifconfig";
String[] callCmd = {"/bin/bash", "-c", cmds};
System.out.println("exit code:\n" + execCommand(callCmd).get(0).toString());
System.out.println();
System.out.println("command result:\n" + execCommand(callCmd).get(1).toString());
Unless your script.sh has a comma in its name, that is the mistake:
String[] command = {"/teste/teste_back/script.sh" , argument1, argument};
Related
I call the.py file in a basic java project and it takes about 30 seconds to run.
import java.io.BufferedReader;
import java.io.InputStreamReader;
public class Main {
public static void main(String[] args) {
Process proc;
String line ="";
BufferedReader in;
try {
proc = Runtime.getRuntime().exec("D:\\anaconda\\python.exe " +
"D:/2017/Python/pythonProject8/main.py " +
"D:\\2017\\Python\\pythonProject8\\flower1.jpg");
proc.waitFor();
in = new BufferedReader(new InputStreamReader(proc.getInputStream()));
while ((line = in.readLine()) != null) {
System.out.println(line);
}
in.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
result:
enter image description here
But this code is skipped when I use spring-boot.
#GetMapping("test")
public String test(){
System.out.println(1);
Process proc;
String line = "";
String result = "";
try {
proc = Runtime.getRuntime().exec("D:\\anaconda\\python.exe " +
"D:/2017/Python/pythonProject8/main.py " +
"D:\\2017\\Python\\pythonProject8\\flower3.jpg");// 执行py文件
proc.waitFor();
BufferedReader in = new BufferedReader(new InputStreamReader(proc.getInputStream()));
while ((line = in.readLine()) != null) {
System.out.println(line);
result += line;
}
in.close();
} catch (Exception e) {
e.printStackTrace();
}
System.out.println(2);
return result;
}
result:
enter image description here
I want to know how to run spring-boot properly.
thanks.
If your.py file takes a long time to run then you shouldn't use Process and use ProcessBuilder instead.
public ArrayList<String> getPasswords(String path) throws IOException {
String result = "";
ProcessBuilder processBuilder = new ProcessBuilder("D:\\anaconda\\python.exe ", "D:\\2017\\Python\\pythonProject8\\main.py",path);
//The path here is me.py needs to be passed in
processBuilder.redirectErrorStream(true);
final Process process = processBuilder.start();
final BufferedReader in = new BufferedReader(new InputStreamReader(process.getInputStream()));
String s = null;
int i = 0;
while ((s = in.readLine()) != null)//This if is I need to ignore some of the output
{
i++;
if (i >6) {
result += s + '\n';
}
}
if (!result.equals("")){
return new ArrayList<String>(Arrays.asList(result.split("\n")));
}
return new ArrayList<String>();
}
You may run an error "DLL load failed while importing XXXX".
Please update the packages required for python.
Is it possible in java by using something like ProcessBuilder to open gitbash, write a command (for example git status) and output the results?
I can successfully open git bash by using the following code but i don't know how to write any commands in it.
String[] commands = {"cmd","/C","C:\\Users\\......\\Git\git-bash"};
ProcessBuilder builder = new ProcessBuilder(commands);
builder.redirectErrorStream(true);
Process process = builder.start();
StringBuilder sb = new StringBuilder();
BufferedReader br = null;
try
{
br=new BufferedReader(new InputStreamReader(process.getInputStream()));
String line = null;
while ((line = br.readLine()) != null) {
sb.append(line + System.getProperty("line.seperator"));
}
} finally {
br.close();
}
String outcome = get_output(process.getInputStream());
process.waitFor();
System.out.println("Process finished with outcome = " + outcome);
You just have to change the paths and the git command. But the git-bash output is printed on a separate .txt file because I couldn't read it in any other way.
public class GitBash {
public static final String path_bash = "C:/Program Files/Git/git-bash.exe";
// Create a file Output.txt where git-bash prints the results
public static final String path_file_output_git_bash =
"C:/Users/Utente/Documents/IntelliJ-DOC/IntelliJ_project/Prova/src/main/Git-bash/Output.txt";
public static void main(String[] args) {
// Path to your repository
String path_repository = "cd C:/Users/Utente/Documents/Repository-SVN-Git/Bookkeeper";
// Git command you want to run
String git_command = "git ls-files | grep .java | wc -l";
String command = path_repository + " && " + git_command + " > " + path_file_output_git_bash;
runCommand(command);
}
public static void runCommand(String command) {
try {
ProcessBuilder processBuilder = new ProcessBuilder();
processBuilder.command(path_bash, "-c", command);
Process process = processBuilder.start();
int exitVal = process.waitFor();
if (exitVal == 0) {
System.out.println(" --- Command run successfully");
System.out.println(" --- Output = " + readFileTxt());
} else {
System.out.println(" --- Command run unsuccessfully");
}
} catch (IOException | InterruptedException e) {
System.out.println(" --- Interruption in RunCommand: " + e);
// Restore interrupted state
Thread.currentThread().interrupt();
}
}
public static String readFileTxt() {
String data = null;
try {
File myObj = new File(path_file_output_git_bash);
Scanner myReader = new Scanner(myObj);
while (myReader.hasNextLine()) {
data = myReader.nextLine();
}
myReader.close();
} catch (FileNotFoundException e) {
System.out.println(" --- An error occurred");
e.printStackTrace();
}
return data;
}
}
}
--- EDIT 2021/03/26 ---
Answer without the needs of a .txt file : Read output git-bash with ProcessBuilder in Java
Hi i am trying to run this command that is passed on to the runExternalProgram. When i ran the command through cmd, it was successful and i was able to receive a message but when i run the java program, there was no error issue but no message was received. How should I go about solving this error?
String Command ="cmd /c start java -classpath C:/Users/admin/Desktop/Smsworkspace/sendmessage/src;C:/Users/admin/Desktop/Smsworkspace/sendmessage/src/plivo-java-3.0.9-jar-with-dependencies.jar sendmessage.SendSMS2 +xxxxx +xxxxx CS";
runExternalProgram
public HashMap runExternalProgram_Windows(String Command) {
String _LOC = "[SB_Utilities: runExternalProgram_Windows]";
System.out.println(_LOC + "1.0");
System.out.println("Command is: "+ Command);
String line;
InputStream stderr = null;
InputStream stdout = null;
HashMap _m = new HashMap();
try {
Process process = Runtime.getRuntime ().exec (Command);
System.out.println("Process is: " + process);
Worker worker = new Worker(process);
System.out.println("Worker is: " + worker);
worker.start();
try {
worker.join(180000);
if (worker.exit == null)
{
throw new Exception();
}
}
catch(Exception ex) {
ex.printStackTrace();
_m.put("LOG_ERROR_EXTERNAL", "180 second time out...check connection");
return _m;
}
finally {
process.destroy();
}
stderr = process.getErrorStream ();
stdout = process.getInputStream ();
String _log_output = null;
// clean up if any output in stdout
BufferedReader brCleanUp = new BufferedReader (new InputStreamReader (stdout));
System.out.println("Outcome is: "+brCleanUp.readLine());
while ((line = brCleanUp.readLine ()) != null) {
if (_log_output==null) {
_log_output = line + "\n";
} else {
_log_output = _log_output + line + "\n";
}
}
brCleanUp.close();
_m.put("LOG_OUTPUT", _log_output);
String _log_error = null;
// clean up if any output in stderr
brCleanUp=new BufferedReader (new InputStreamReader (stderr));
System.out.println("Outcome error is "+brCleanUp.readLine());
while ((line = brCleanUp.readLine ()) != null) {
if (_log_error==null) {
_log_error = line + "\n";
} else {
_log_error = _log_error + line + "\n";
}
}
brCleanUp.close();
_m.put("LOG_ERROR_EXTERNAL", _log_error);
} catch (Exception e) {
e.printStackTrace();
}
return _m;
}
I have created indexes and fields in ElasticSearch.
I could successfully run Logstash config file to add data from MySQL database table into ElasticSearch using the following command :
bin/logstash -f [PATH TO LOGSTASH CONFIG FILE] -v
I need to run this command from my Java source code. How do I run this logstash config file from Java code?
import java.io.*;
class UserTest{
public static void main(String[] args)
{
try
{
String s = "";
String[] cmd = new String[]{"/bin/sh", "./logstash","-f","loggingConfFile.conf"};
Process processes = Runtime.getRuntime().exec(cmd);
BufferedReader stdInput = new BufferedReader(new InputStreamReader(processes.getInputStream()));
while ((s = stdInput.readLine()) != null)
{
System.out.println(s);
}
}
catch(Exception ex)
{
ex.printStackTrace();
}
}
}
Try this code. It works.
try {
ProcessBuilder b1 = new ProcessBuilder("cmd.exe", "/c", "cd \"C:\\elk\\logstash-5.1.2\\bin\" && logstash -f first-pipeline.conf --config.reload.automatic");
b1.redirectErrorStream(true);
Process p1 = b1.start();
BufferedReader r1 = new BufferedReader(new InputStreamReader(p1.getInputStream()));
String line1;
while (true) {
line1 = r1.readLine();
if (line1 == null) { break; }
System.out.println(line1);
}
}catch(Exception e) {
}
Try this and this works fine with few changes to the above mentioned code:
try {
ProcessBuilder builder = new ProcessBuilder("cmd.exe", "/c", "logstash -f --Your file Path-- ");
builder.redirectErrorStream(true);
Process p = builder.start();
BufferedReader r = new BufferedReader(new InputStreamReader(p.getInputStream()));
String line1;
while (true) {
line1 = r.readLine();
if (line1 == null) { break; }
System.out.println(line1);
}
}catch(Exception e) {
e.printStackTrace();
}
i wanted to perform rename and delete function and the environment is LINUX.
This is the code which I'm using,
String[] command_ary = { "/usr/bin/sh", "-c", command };
Runtime runtime = Runtime.getRuntime();
Process process = runtime.exec( command_ary );
But Im getting the following error message,
java.io.IOException: Cannot run program "/usr/bin/sh": java.io.IOException: error=2, No such file or directory
Can anybody help me.
Thank-You
As the exception says, there's no file /usr/bin/sh on your system. If you're looking for the Bourne shell, that's /bin/sh.
public void run() {
//log.info("taskDao:{},concurrentHashSet:{},id:{},shellName:{},shellDate:{}", taskDao, concurrentHashSet, id, shellName, shellDate);
log.info("concurrentHashSet:{},param:{}", concurrentHashSet, param);
int exeState = 99999;
// ssh跳转到其他机器去执行脚本,you can add "ssh rd#g1-jg-hadoop-01 \"source ~/.bash_profile ; bash -x %s %s\"" instead of command
String command = "source ~/.bash_profile ; bash -x %s %s";
String commandF = String.format(command, param.getShellName(), param.getRecallDate());
String[] cmdArr = {"/bin/sh", "-c", commandF};
long taskId = param.getTaskId();
Runtime runtime = Runtime.getRuntime();
Process process = null;
try {
process = runtime.exec(cmdArr);
InputStream stderr = process.getErrorStream();
InputStreamReader isr = new InputStreamReader(stderr);
BufferedReader br = new BufferedReader(isr);
String line = null;
StringBuilder sb = new StringBuilder();
while ((line = br.readLine()) != null) {
sb.append(line).append(System.lineSeparator());
}
log.info("exe task thread param:{},commandF:{},execute shell info:{}", param, commandF, sb.toString());
exeState = process.waitFor();
} catch (InterruptedException | IOException e) {
log.error("execute shell error,exeState:{},command:{}", exeState, commandF,e);
} finally {
log.info("execute shell state:{}", exeState);
// 从set中删除 更新表状态 多张表一个脚本，会有问题，其中状态覆盖
if (exeState == 0) {
// 执行成功
taskDao.updateStateByPrimaryKey(taskId, (short) 30, new Date());
// 邮件参数
param.setState(30);
String mailBody = SendMailUtil.beautyMailHtmlLayout(param);
String mailToAddress = param.getMailToUser();
String mailTitle = param.getMailContentTitle();
try {
SendMailUtil.sendMail(mailToAddress, mailTitle, mailBody);
} catch (Exception e) {
e.printStackTrace();
}
}
if (exeState != 0) {
// 执行失败
taskDao.updateStateByPrimaryKey(taskId, (short) 40, new Date());
// 邮件参数
param.setState(40);
String mailBody = SendMailUtil.beautyMailHtmlLayout(param);
String mailToAddress = param.getMailToUser();
try {
SendMailUtil.sendMail(mailToAddress, "回溯任务", mailBody);
} catch (Exception e) {
e.printStackTrace();
}
}
ExecuteTaskModel taskModel = new ExecuteTaskModel();
taskModel.setId(taskId);
log.info("remove task in thread,id:{}", taskId);
boolean remove;
if (concurrentHashSet.contains(taskModel)) {
remove = concurrentHashSet.remove(taskModel);
}
log.info("remove from set success set:{}", concurrentHashSet);
log.info("execute task thread exit!");
System.out.println("Process exitValue: " + exeState);
assert process != null;
process.destroy();
}
}