java文件转码

完整项目带lib

参考

http://toyota2006.iteye.com/blog/540316

判断编码

package change;

import info.monitorenter.cpdetector.io.CodepageDetectorProxy;
import info.monitorenter.cpdetector.io.JChardetFacade;

import java.io.File;
import java.nio.charset.Charset;

public class EncodingUtil {

    public static String getFileEncoding(String filePath) {

        File file = new File(filePath);

        return getFileCharacterEnding(file);
    }

    /**
     * Try to get file character ending.
     * </p>
     * <strong>Warning: </strong>use cpDetector to detect file's encoding.
     * 
     * @param file
     * @return
     */
    public static String getFileCharacterEnding(File file) {

        String fileCharacterEnding = "UTF-8";

        CodepageDetectorProxy detector = CodepageDetectorProxy.getInstance();
        detector.add(JChardetFacade.getInstance());

        Charset charset = null;

        // File f = new File(filePath);

        try {
            charset = detector.detectCodepage(file.toURL());
        } catch (Exception e) {
            e.printStackTrace();
        }
        if (charset != null) {
            fileCharacterEnding = charset.name();
        }

        return fileCharacterEnding;
    }
    
    public static void main(String[] args) {
        System.out.println(getFileEncoding("E:/code/myec_cyh/pingan_dmz/test.java"));
        System.out.println(getFileEncoding("E:/code/myec_cyh/pingan_dmz/src/cn/com/benyoyo/manage/core/DBUtil/PublicDao.java"));
        
    }
}

转码

package change;

import java.io.File;
import java.util.Collection;

import org.apache.commons.io.FileUtils;
/**
 * 
 * @author sgy
 *
 *如果项目中同时存在有gb2312/gbk和utf8的文件，则将gb2312/gbk的转为utf8
 */
public class ChangeEncoding {

    public static void main(String[] args) throws Exception {
        //GBK编码格式源码路径
        String srcDir = "E:\\pingan_dmz";
        //转为UTF-8编码格式源码路径
        String targetDirectory = "E:\\code\\myec_cyh\\pingan_dmz";
             
        //获取所有java文件
        Collection<File> srcDirFileCol =  FileUtils.listFiles(new File(srcDir), new String[]{"java"}, true);
        
        for (File srcFile : srcDirFileCol) {
            String srcFilePath = srcFile.getAbsolutePath();
            //当为GB2312时才会转换为urf8
            String srcEncoding = EncodingUtil.getFileEncoding(srcFilePath);
            System.out.print(srcFile.getName()+":"+srcEncoding+" ");
            if ("GB2312" == srcEncoding || "GBK" == srcEncoding) {
                System.out.println();
                System.out.print(srcFile.getAbsolutePath());
                //UTF8格式文件路径
                String targetFilePath = targetDirectory+srcFilePath.substring(srcDir.length());
                //使用GBK读取数据，然后用UTF-8写入数据
                FileUtils.writeLines(new File(targetFilePath), "UTF-8", FileUtils.readLines( srcFile, srcEncoding));     
            }
        }
        
        
    }
}

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