1、检查idea是否有安装Java Bytecode Decomplier插件（基本上都有）
2、找到插件的运行包
目录：..idea\plugins\java-decompiler\lib\java-decompiler.jar
3、执行命令可生成原码jar包
java -cp “D:\decompiler\java-decompiler.jar” org.jetbrains.java.decompiler.main.decompiler.ConsoleDecompiler -dgs=true D:\decompiler\xxx\xxx-web-1.5.0-SNAPSHOT.jar src

4、工具方法

import cn.hutool.core.collection.CollectionUtil;
import cn.hutool.core.io.FileUtil;import java.io.*;
import java.util.List;public class Decompiler {public static void main(String[] args) throws IOException, InterruptedException {String rootPath = "D:\\acloud_jar\\acloud_lib";List<String> fileNames = FileUtil.listFileNames(rootPath);if (CollectionUtil.isEmpty(fileNames)) {return;}for (String fileName : fileNames) {if(!fileName.contains("acloud")){return;}Process p = Runtime.getRuntime().exec(String.format("java -cp \"D:\\acloud_jar\\java-decompiler.jar\" org.jetbrains.java.decompiler.main.decompiler.ConsoleDecompiler -dgs=true %s D:\\acloud_jar\\src", String.format("%s%s%s", rootPath, File.separator, fileName)));InputStream is = p.getInputStream();BufferedReader reader = new BufferedReader(new InputStreamReader(is));String line;while ((line = reader.readLine()) != null) {System.out.println(line);}p.waitFor();is.close();reader.close();p.destroy();}}
}