java 调用命令执行操作方法

　　/**
     * 运行系统命令并返回命令结果
     * @param command 要执行的命令
     * @return  命令执行的结果
     */
    public static String executeCommand(String command) throws IOException {
        StringBuilder output = new StringBuilder();

        // 启动命令
        Process process = Runtime.getRuntime().exec(command);

        // 读取命令的输出
        BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
        String line;
        while ((line = reader.readLine()) != null) {
            output.append(line).append("\n");
            // System.out.println(line);
        }

        // 读取尝试命令的任何错误
        BufferedReader error = new BufferedReader(new InputStreamReader(process.getErrorStream()));
        while ((line = error.readLine()) != null) {
            output.append("错误: ").append(line).append("\n");
            //System.err.println(line);
        }

        return output.toString();
    }
　　

 <h1>案件收到货</h1>