Java程序创建Manifest文件

package com.horse.util; import java.io.File; import java.io.FileOutputStream; import java.util.jar.Attributes; import java.util.jar.Manifest; public class ManifestUtil { public static void main(String[] args){ try { ManifestUtil.createManifest("c:/111/MANIFEST.MF", "C:/111/lib","lib","com.horse.StuManager"); } catch (Exception e) { e.printStackTrace(); } } /** * 生成manifest文件 * @param filePath 保存manifest文件的路径+文件名，例如：c:/111/MANIFEST.MF * @param jarDir 存放被引用jar的文件夹路径，例如：C:/111/lib * @param classDirPre 相对路径，例如：如果被引用jar放在相对入口jar的lib文件夹里面，该参数就设置成"lib"；如果是平级，该参数可设置成空字符串或null * @param mainClassPath 主函数路径，例如：com.horse.StuManager * @throws Exception */ public static void createManifest(String filePath, String jarDir, String classDirPre,String mainClassPath) throws Exception { File mfFile = new File(filePath); if (!mfFile.exists()) { mfFile.createNewFile(); } FileOutputStream fos = new FileOutputStream(mfFile); StringBuffer sb = new StringBuffer(); File classFile = new File(jarDir); int count = 0; if (classFile.exists()) { if (classFile.isDirectory()) { File[] files = classFile.listFiles(); for (int i = 0; i < files.length; i++) { if (files[i].getName().endsWith(".jar")) { count++; sb.append(((classDirPre==null || classDirPre.equals(""))?"" : (classDirPre + "/")) + files[i].getName()).append(" "); } } } } System.out.println("There are " + count + " jar files!"); // System.out.println(sb.toString()); Manifest m = new Manifest(); Attributes a = m.getMainAttributes(); a.put(Attributes.Name.MANIFEST_VERSION, "1.0"); System.out.println("MANIFEST_VERSION=" + a.getValue(Attributes.Name.MANIFEST_VERSION)); if(mainClassPath != null && !mainClassPath.equals("")){ a.put(Attributes.Name.MAIN_CLASS, mainClassPath); System.out.println("MAIN_CLASS=" + a.getValue(Attributes.Name.MAIN_CLASS)); } a.put(Attributes.Name.CLASS_PATH, sb.toString()); System.out.println("CLASS_PATH=" + a.getValue(Attributes.Name.CLASS_PATH)); m.write(fos); fos.flush(); fos.close(); } }