Java执行外部程序并获取其输出数据，java执行外部输出,import java.

Java执行外部程序并获取其输出数据，java执行外部输出,import java.

import java.io.*;/** * 示例：执行进程并返回结果 */public class ProcessExecutor {    public static final int SUCCESS = 0;            // 表示程序执行成功    public static final String COMMAND = "java.exe -version";    // 要执行的语句    public static final String SUCCESS_MESSAGE = "程序执行成功！";    public static final String ERROR_MESSAGE = "程序执行出错：";    public static void main(String[] args) throws Exception {        // 执行程序        Process process = Runtime.getRuntime().exec(COMMAND);        // 打印程序输出        readProcessOutput(process);        // 等待程序执行结束并输出状态        int exitCode = process.waitFor();        if (exitCode == SUCCESS) {            System.out.println(SUCCESS_MESSAGE);        } else {            System.err.println(ERROR_MESSAGE + exitCode);        }    }    /**     * 打印进程输出     *     * @param process 进程     */    private static void readProcessOutput(final Process process) {        // 将进程的正常输出在 System.out 中打印，进程的错误输出在 System.err 中打印        read(process.getInputStream(), System.out);        read(process.getErrorStream(), System.err);    }    // 读取输入流    private static void read(InputStream inputStream, PrintStream out) {        try {            BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));            String line;            while ((line = reader.readLine()) != null) {                out.println(line);            }        } catch (IOException e) {            e.printStackTrace();        } finally {            try {                inputStream.close();            } catch (IOException e) {                e.printStackTrace();            }        }    }}