从网上下载的项目，有时候.java文件的编码是ANSI。导入到自己的MyEclipse后，查看项目源码的时候，总是乱码。
一个个.java去修改的话， 既麻烦又不现实。所以写了下面这个工具类，进行批量转编码。
代码的原理仅仅就是遍历文件，然后使用流，对按照文件的原编码进行读取，用目的编码进行写操作。
直接上源码：
package test; import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter; public class Main {
// private String sDirectory = "D:/Workspaces/BeyondDiscuz/src/com";
private String sDirectory = "D:\\Workspaces\\BeyondDiscuz\\src\\com";
private String dDirectory = "D:\\Workspaces\\BeyondDiscuz\\src\\cn"; public static void main(String[] args) {
Main 吗 = new Main();
try {
吗.readerFile(吗.sDirectory);
} catch (IOException e) {
e.printStackTrace();
}
} public void readerFile(String filePath) throws IOException {
if ("".equals(filePath) || null == filePath) {
return;
} File f = new File(filePath);
if (f.isDirectory()) {
String[] child = f.list();
for (int i = 0; i < child.length; i++) {
String path = f.getAbsolutePath() + File.separator;
String newPath = path.replace(this.sDirectory, this.dDirectory);
child[i] = path + child[i];
File c = new File(child[i]);
String newFile = child[i].replace(this.sDirectory, this.dDirectory);
System.out.println("旧路径：" + path);
System.out.println("新路径：" + newPath); File newP = new File(newPath);
if (!newP.exists())
newP.mkdir(); if (c.isFile()) {
System.out.println("旧文件：" + child[i]);
System.out.println("新文件：" + newFile);
// Charset US-ASCII ISO-8859-1 UTF-8 UTF-16BE UTF-16LE UTF-16
BufferedReader r = new BufferedReader(new InputStreamReader(new FileInputStream(c), "GBK"));
// BufferedReader r = new BufferedReader(new InputStreamReader(new FileInputStream(c)));
File newF = new File(newFile);
newF.createNewFile();
// BufferedWriter w = new BufferedWriter(new
// OutputStreamWriter(new FileOutputStream(newF), "UTF-8"));
BufferedWriter w = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(newF)));
// BufferedWriter w = new BufferedWriter(new FileWriter(newFile));
String lineText = null;
while ((lineText = r.readLine()) != null) {
// String temp = new String(lineText.getBytes("ISO-8859-1"), "UTF-8");
w.write(lineText);
w.newLine();
}
w.close();
r.close();
} else {
readerFile(child[i]);
}
}
}
} }
上面自己的写代码只是基本思路，下面是更简洁的代码：
public static void main(String[] args) {
try {
String srcDirPath = "E:\\eclipseWorkspaceSandbase\\test";
// 转为UTF-8编码格式源码路径
String utf8DirPath = "E:\\eclipseWorkspaceSandbase\\test-8";
// 获取所有java文件
Collection<File> javaGbkFileCol = FileUtils.listFiles(new File(srcDirPath), new String[] { "java" }, true);
for (File javaGbkFile : javaGbkFileCol) {
System.out.println(javaGbkFile);
// UTF8格式文件路径
String utf8FilePath = utf8DirPath + javaGbkFile.getAbsolutePath().substring(srcDirPath.length());
// 使用GBK读取数据，然后用UTF-8写入数据
FileUtils.writeLines(new File(utf8FilePath), "UTF-8", FileUtils.readLines(javaGbkFile, "GBK"));
}
} catch (Exception e) {
e.printStackTrace();
}
}