问题描述：将指定目录下的批量的.html静态页面转换成.jsp文件。
思路描述：.html装换成.jsp需要加上两行文件(可以根据需要自行添加)，本文中将加入以下两行头文件，并将其保存到head.txt

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> 

代码如下:

import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.InputStreamReader;   public class HtmlTransJspUtils {     public static void main(String[] args) throws Exception {         //         File f = new File("指定的目录文件夹");         for(File s : f.listFiles()){             String str = s.getAbsolutePath();             if(str.endsWith(".html")){                 writeFile(str);                 fileRename(str);             }                      }     }       /**      * 读取指定文件下的内容，乱码问题已经处理,编码为UTF-8      *       * @param fileName      * @return      * @throws Exception      */     public static String readFile(String fileName) throws Exception {         String result = "";         InputStreamReader inputStreamReader = null;         BufferedReader bufferedReader = null;         try {             inputStreamReader = new InputStreamReader(new FileInputStream(                     fileName), "utf-8");             bufferedReader = new BufferedReader(inputStreamReader);             try {                 String read = null;                 while ((read = bufferedReader.readLine()) != null) {                     result = result + read + "\r\n";                 }             } catch (Exception e) {                 e.printStackTrace();             }         } catch (Exception e) {             e.printStackTrace();         } finally {             if (bufferedReader != null) {                 bufferedReader.close();             }             if (inputStreamReader != null) {                 inputStreamReader.close();             }         }         System.out.println("读取出来的文件内容是：" + "\r\n" + result);         return result;       }       /**      * 文件的写入      *       * @param fileName      * @throws Exception      */     public static void writeFile(String fileName) throws Exception {         try {             String oldContent = readFile(fileName);             FileOutputStream fo = new FileOutputStream(fileName);             //读取头文件的内容             fo.write(readFile("F:/head.txt").getBytes("utf-8"));             fo.write(oldContent.getBytes("utf-8"));             fo.close();         } catch (FileNotFoundException e) {             e.printStackTrace();         }     }       /**      * 修改文件的后缀名，即html变成jsp      * @param fileName      */     public static void fileRename(String fileName) {         File oldFile = new File(fileName);         System.out.println("修改前文件名称是：" + oldFile.getName());         String rootPath = oldFile.getParent();         System.out.println("根路径是：" + rootPath);         File newFile = new File(rootPath , oldFile.getName().replace("html", "jsp"));         System.out.println("修改后文件名称是：" + newFile.getName());         if (oldFile.renameTo(newFile)) {             System.out.println("修改成功!");         } else {             System.out.println("修改失败");         }     }   }   

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