windows下自动生成文件夹下所有JNI所需的.h头文件

编程技术  /  houtizong 发布于 3年前   92

以下程序打包成jar后在生成的.class文件的根路径（如elcipse工程的bin文件夹）下运行即可！！
生成的.h文件放在当前目录的h文件夹下

import java.io.BufferedReader;import java.io.File;import java.io.FileNotFoundException;import java.io.FileReader;import java.io.IOException;public class GenerateHFile {static String suffix = ".class";static String outputFolder = ".\\h\\";//输出文件夹/**生成以classRoot为根文件夹的类的JNI用的.h文件,其中folder为当前路径，他应为classRoot的一个子路径 * @param folder 当前文件夹 * @param classRoot 类文件的根路径 */static void generateHFile(File folder, File classRoot) {File fs[] = folder.listFiles();for (File file : fs) {if (file.isDirectory()) {generateHFile(file, classRoot);} else if (file.getName().endsWith(suffix)) {String exe = "javah";String arg = classRoot.getAbsolutePath();String tmp = file.getAbsolutePath();tmp = tmp.substring(arg.length() + 1,tmp.length() - suffix.length());tmp = tmp.replace(File.separator.charAt(0), '.');String cmds[] = { exe, "-d", outputFolder,"-classpath",arg, tmp };try {Process p = Runtime.getRuntime().exec(cmds);p.waitFor();} catch (IOException e) {e.printStackTrace();} catch (InterruptedException e) {e.printStackTrace();}System.out.println(arg);}}}static String prefix = "JNIEXPORT";/** * 清除不包含native方法的h文件，根据文件中是否含有"JNIEXPORT"来进行判断 */static void clean() {File[] fs = new File(outputFolder).listFiles();Label: for (int i = 0; i < fs.length; i++) {try {BufferedReader br = new BufferedReader(new FileReader(fs[i]));while (br.ready()) {String s = br.readLine();if (s.startsWith(prefix)) {continue Label;}}br.close();System.out.print("has deleted successfully: " + fs[i]);boolean b = fs[i].delete();System.out.println(" : " + b);} catch (FileNotFoundException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}}public static void main(String[] args) {File dir = new File(".");new File(outputFolder).mkdirs();generateHFile(dir, dir);clean();}}