exec Shell Command - Java Native OS

Description

exec Shell Command
Demo Code


import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.List;

public class Main{
    public static final String COMMAND_SU = "su";
    public static final String COMMAND_SH = "sh";
    public static final String COMMAND_EXIT = "exit\n";
    public static final String COMMAND_LINE_END = "\n";
    public static CommandResult execCommand(String command, boolean isRoot) {
        return execCommand(new String[] { command }, isRoot, true);
    }/*  w  ww.  ja  va 2 s.com*/
    public static CommandResult execCommand(List<String> commands,
            boolean isRoot) {
        return execCommand(
                commands == null ? null : commands.toArray(new String[] {}),
                isRoot, true);
    }
    public static CommandResult execCommand(String[] commands,
            boolean isRoot) {
        return execCommand(commands, isRoot, true);
    }
    public static CommandResult execCommand(String command, boolean isRoot,
            boolean isNeedResultMsg) {
        return execCommand(new String[] { command }, isRoot,
                isNeedResultMsg);
    }
    public static CommandResult execCommand(List<String> commands,
            boolean isRoot, boolean isNeedResultMsg) {
        return execCommand(
                commands == null ? null : commands.toArray(new String[] {}),
                isRoot, isNeedResultMsg);
    }
    public static CommandResult execCommand(String[] commands,
            boolean isRoot, boolean isNeedResultMsg) {
        int result = -1;
        if (commands == null || commands.length == 0) {
            return new CommandResult(result, null, null);
        }

        Process process = null;
        BufferedReader successResult = null;
        BufferedReader errorResult = null;
        StringBuilder successMsg = null;
        StringBuilder errorMsg = null;
        DataOutputStream os = null;
        try {
            process = Runtime.getRuntime().exec(
                    isRoot ? COMMAND_SU : COMMAND_SH);
            os = new DataOutputStream(process.getOutputStream());
            for (String command : commands) {
                if (command == null) {
                    continue;
                }
                os.write(command.getBytes());
                os.writeBytes(COMMAND_LINE_END);
                os.flush();
            }
            os.writeBytes(COMMAND_EXIT);
            os.flush();

            result = process.waitFor();
            // get command result
            if (isNeedResultMsg) {
                successMsg = new StringBuilder();
                errorMsg = new StringBuilder();
                successResult = new BufferedReader(new InputStreamReader(
                        process.getInputStream()));
                errorResult = new BufferedReader(new InputStreamReader(
                        process.getErrorStream()));
                String s;
                while ((s = successResult.readLine()) != null) {
                    successMsg.append(s);
                }
                while ((s = errorResult.readLine()) != null) {
                    errorMsg.append(s);
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (os != null) {
                    os.close();
                }
                if (successResult != null) {
                    successResult.close();
                }
                if (errorResult != null) {
                    errorResult.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }

            if (process != null) {
                process.destroy();
            }
        }
        return new CommandResult(result, successMsg == null ? null
                : successMsg.toString(), errorMsg == null ? null
                : errorMsg.toString());
    }
}
exec Shell Command - Java Native OS

Description

Demo Code

Related Tutorials
