小程序:将gbk转为utf-8

是否有过写了半天代码,发现竟然用的GBK编码,然后到主UTF-8上发现中文全部变成乱码了。。。

下面这个程序,只要输入src的位置,瞬间转换成utf-8

package tools;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.List;

import org.mozilla.intl.chardet.nsDetector;
import org.mozilla.intl.chardet.nsICharsetDetectionObserver;
/**********************************************
 *  Maven   
 *  <!-- 用于文件编码检查 -->
 *      <dependency>
 *          <groupId>net.sourceforge.jchardet</groupId>
 *          <artifactId>jchardet</artifactId>
 *          <version>1.0</version>
 *      </dependency>
 * *********************************************/
/**
 * 借助JCharDet获取文件字符集 JCharDet 
 * 是mozilla自动字符集探测算法代码的java移植,其官方主页为:
 * http://jchardet.sourceforge.net/
 */
public class FileCharsetDetector {

    private static boolean found = false;

    /**
     * 如果完全匹配某个字符集检测算法, 则该属性保存该字符集的名称. 
     * 否则(如二进制文件)其值就为默认值 null, 这时应当查询属性
     */
    private static String encoding = null;
    
    public static void main(String[] argv) throws Exception {
        String filepath = "C:\\Users\\chenhuan001\\workspace\\CrawlSinaBySelenium\\src";
        GBKFold_to_UTF8(filepath);
    }

    public static void GBKFold_to_UTF8(String filepath) throws FileNotFoundException, IOException {
        List<String> files = FileUtil.getAllFileNameInFold(filepath);
        for (String file : files) {
            if (guestFileEncoding(new File(file)).equals("UTF-8")) {
                System.out.println(file);
            } else {
                //System.out.println(file);
                String file_content = FileUtil.readLogByStringAndEncode(file,"gbk");
                //System.out.println(file_content);
                //FileUtil.deleteEveryThing(file);//删除不了文件...
                FileUtil.writeLog(file, file_content, false, "utf-8");
            }
        }
    }

    /**
     * 传入一个文件(File)对象,检查文件编码
     * 
     * @param file
     *            File对象实例
     * @return 文件编码,若无,则返回null
     * @throws FileNotFoundException
     * @throws IOException
     */
    static public String guestFileEncoding(File file) throws FileNotFoundException,
            IOException {
        return geestFileEncoding(file, new nsDetector());
    }

    /**
     * 获取文件的编码
     * 
     * @param file
     *            File对象实例
     * @param languageHint
     *            语言提示区域代码 eg:1 : Japanese; 2 : Chinese; 3 : Simplified Chinese;
     *            4 : Traditional Chinese; 5 : Korean; 6 : Dont know (default)
     * @return 文件编码,eg:UTF-8,GBK,GB2312形式,若无,则返回null
     * @throws FileNotFoundException
     * @throws IOException
     */
    public String guestFileEncoding(File file, int languageHint)
            throws FileNotFoundException, IOException {
        return geestFileEncoding(file, new nsDetector(languageHint));
    }

    /**
     * 获取文件的编码
     * 
     * @param path
     *            文件路径
     * @return 文件编码,eg:UTF-8,GBK,GB2312形式,若无,则返回null
     * @throws FileNotFoundException
     * @throws IOException
     */
    public String guestFileEncoding(String path) throws FileNotFoundException,
            IOException {
        return guestFileEncoding(new File(path));
    }

    /**
     * 获取文件的编码
     * 
     * @param path
     *            文件路径
     * @param languageHint
     *            语言提示区域代码 eg:1 : Japanese; 2 : Chinese; 3 : Simplified Chinese;
     *            4 : Traditional Chinese; 5 : Korean; 6 : Dont know (default)
     * @return
     * @throws FileNotFoundException
     * @throws IOException
     */
    public String guestFileEncoding(String path, int languageHint)
            throws FileNotFoundException, IOException {
        return guestFileEncoding(new File(path), languageHint);
    }

    /**
     * 获取文件的编码
     * 
     * @param file
     * @param det
     * @return
     * @throws FileNotFoundException
     * @throws IOException
     */
    private static String geestFileEncoding(File file, nsDetector det)
            throws FileNotFoundException, IOException {
        // Set an observer...
        // The Notify() will be called when a matching charset is found.
        det.Init(new nsICharsetDetectionObserver() {
            public void Notify(String charset) {
                found = true;
                encoding = charset;
            }
        });

        BufferedInputStream imp = new BufferedInputStream(new FileInputStream(file));

        byte[] buf = new byte[1024];
        int len;
        boolean done = false;
        boolean isAscii = true;

        while ((len = imp.read(buf, 0, buf.length)) != -1) {
            // Check if the stream is only ascii.
            if (isAscii)
                isAscii = det.isAscii(buf, len);

            // DoIt if non-ascii and not done yet.
            if (!isAscii && !done)
                done = det.DoIt(buf, len, false);
        }
        det.DataEnd();

        if (isAscii) {
            encoding = "ASCII";
            found = true;
        }

        if (!found) {
            String prob[] = det.getProbableCharsets();
            if (prob.length > 0) {
                // 在没有发现情况下,则取第一个可能的编码
                encoding = prob[0];
            } else {
                return null;
            }
        }
        return encoding;
    }
}

另外还要导入三个包:

http://blog.csdn.net/luojia_wang/article/details/

这里面有。

把上一篇文章中的FileUtil弄进去。 然后好像用到了log4j.jar 应该也要导入一下。

posted @ 2017-03-18 17:26  chenhuan001  阅读(3795)  评论(0编辑  收藏  举报