Java调用Shell 脚本

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Java 代码调用Shell 脚本

//在单独的进程中执行指定的字符串命令。
Process exec(String command) 
//在单独的进程中执行指定命令和变量。 
Process exec(String[] cmdarray) 
//在指定环境的独立进程中执行指定命令和变量。
Process exec(String[] cmdarray, String[] envp) 
//在指定环境和工作目录的独立进程中执行指定的命令和变量。 
Process exec(String[] cmdarray, String[] envp, File dir) 
//在指定环境的单独进程中执行指定的字符串命令。 
Process exec(String command, String[] envp) 
//在有指定环境和工作目录的独立进程中执行指定的字符串命令。
Process exec(String command, String[] envp, File dir) 

代码示例

package com.javayh.advanced.java.linux.shell;

import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

/** * <p> * 调用shell脚本 * </p> * * @author Dylan * @version 1.0.0 * @since 2021-01-26 */
@Slf4j
public class ShellSend { 
   

    /** * 改变文件执行的权限 * @param shellPath * @return * @throws Exception */
    public static boolean runChmod(String shellPath) throws Exception { 
   
        // 添加shell的执行权限
        String chmod = "chmod +x " + shellPath;
        Process process = null;
        try { 
   
            process = Runtime.getRuntime().exec(chmod);
            int waitFor = process.waitFor();
            if (waitFor != 0) { 
   
                log.error("改变Shell脚本执行权限发生异常");
                return false;
            }
            BufferedReader in = new BufferedReader(new InputStreamReader(
                    process.getInputStream()));
           log.info("脚本权限添加成功 >>>>[{}]",in.readLine());
        } catch (IOException | InterruptedException e) { 
   
            throw e;
        } finally { 
   
            if (process != null) { 
   
                process.destroy();
            }
        }
        return true;
    }

    /** * 执行shell脚本 * * @param shellPath shell脚本路劲 * @param params 执行脚本所需参数 * @return */
    public static String runShellCommand(String shellPath, String[] params) throws IOException, InterruptedException { 
   
        String execShell = "/bin/sh " + shellPath;
        // 执行shell脚本时的参数拼接
        if (params != null && params.length > 0) { 
   
            for (String param : params) { 
   
                execShell += " " + param;
            }
        }
        return run(execShell);
    }

    public String runShell(String shPath){ 
   
        if(StringUtils.isNotBlank(shPath)){ 
   
            return run(shPath);
        }
        log.error("file path is null");
        return null;
    }

    private static String run(String shPath){ 
   
        Process process = null;
        BufferedReader in = null;
        try { 
   
            process =Runtime.getRuntime().exec(shPath);
            int waitFor = process.waitFor();
            if(waitFor != 0){ 
   
                log.error("run shell error");
                return null;
            }
            in = new BufferedReader(new InputStreamReader(
                    process.getInputStream()));
            StringBuffer sb = new StringBuffer();
            String lineTxt;
            while ((lineTxt = in.readLine()) != null) { 
   
                sb.append(lineTxt + "\n");
            }
            return sb.toString();
        } catch (IOException | InterruptedException e) { 
   
            e.printStackTrace();
        } finally { 
   
            if (process != null) { 
   
                process.destroy();
            }
            if (in != null) { 
   
                try { 
   
                    in.close();
                } catch (IOException e) { 
   
                    e.printStackTrace();
                    log.error("关闭输出流发生异常");
                }
            }
        }
        return null;
    }
}