Java 调用命令工具类

刺骨的言语ヽ痛彻心扉 2023-10-13 12:09 30阅读 0赞

MyCmdUtil.java

import lombok.extern.slf4j.Slf4j;
    
    import java.io.BufferedReader;
    import java.io.InputStreamReader;
    /**
     * @Author : JCccc
     * @CreateTime : 2023/01/14
     * @Description :
     **/
    @Slf4j
    public class MyCmdUtil {
    
        public static void main(String[] args) {
            execCommand("echo \"Hello, World!\" >JcTest.txt");
        }
    
    
        /**
         * 执行并返回状态码
         *
         * @param cmd
         * @return
         */
        public static Boolean execCommand(String cmd) {
    
    
            BufferedReader br = null;
            try {
                boolean isWindows = System.getProperty("os.name").toLowerCase().startsWith("windows");
                String prefix1 = isWindows ? "cmd" : "/bin/sh";
                String prefix2 = isWindows ? "/c" : "-c";
                Process p = Runtime.getRuntime().exec(new String[]{prefix1, prefix2, cmd});
                // 0 表示正常
                int returnCode = p.waitFor();
                if (returnCode != 0) {
                    br = new BufferedReader(new InputStreamReader(p.getErrorStream(),  isWindows ? "GB2312" : "UTF-8"));
                    String line;
                    StringBuilder sb = new StringBuilder();
                    while ((line = br.readLine()) != null) {
                        sb.append(line).append("\n");
                    }
                    log.error("shell 执行失败: {}", sb);
                    return false;
                }
                log.info("cmd = {}, returnCode = {}", cmd, returnCode);
                return true;
            } catch (Exception e) {
                e.printStackTrace();
                return false;
            } finally {
                if (br != null) {
                    try {
                        br.close();
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
            }
        }
    
    }

玩一下，简单用一下windows环境的命令试试：

public static void main(String[] args) {
            execCommand("echo \"Hello, World!\" >JcTest.txt");
        }

看看效果：  
![39972b1c82854273b28ec7c786d96647.png][]

好了，就到这

[39972b1c82854273b28ec7c786d96647.png]: https://img-blog.csdnimg.cn/39972b1c82854273b28ec7c786d96647.png