今天下载了很多txt格式的书,准备放到手机里无聊的时候看看。可是在手机里显示竟然是乱码,原来txt默认文件编码是ASCII码,于是我把其中一个文件改成unicode码,拷到手机里居然就可以 正常显示。但是下载几十部书,每部书大概有20个txt文件,数量比较多,手工改的话估计吃不消,我就写了个java程序试着能否把文件默认格式转成unicode码格式。程序如下:
/**
* 给定一个源文件路径或者File和目标路径,把源文件路径下的的所有txt文件和文件夹拷贝到目标路径下
* 并且可以按照给定的编码输出txt文件
* @author myyate
*
*/
public class Converter {
public Converter(String inPath, String outPath) throws Exception {
this(inPath, outPath, DEFAULT_ENCODING);
}
public Converter(String inPath, String outPath, String encoding) throws Exception {
this(new File(inPath), new File(outPath), encoding);
}
public Converter(File inFile, File outFile) throws Exception {
this(inFile, outFile, DEFAULT_ENCODING);
}
public Converter(File inFile, File outFile, String encoding) throws Exception {
this.inFile = inFile;
this.outFile = outFile;
if(!outFile.exists()) {
outFile.mkdir();
}
this.encoding = encoding;
}
public void convert() throws Exception {
copyFiles(inFile, outFile);
}
private void copyFiles(File inDirectory, File outDirectory) throws Exception {
for(File file : inDirectory.listFiles(new TxtFileFilter())) {
File outFile = new File(outDirectory.getAbsolutePath(), file.getName());
if(file.isFile()) {
//如果是文件,就把文件拷贝到目标文件夹中
copySingleFile(file, outFile);
} else if(file.isDirectory()) {
if(!outFile.exists()) {
outFile.mkdir();
System.out.println("Create directory [" + outFile.getAbsolutePath() + "]");
}
copyFiles(file, outFile);
}
}
}
private void copySingleFile(File src, File des) throws Exception {
if(!des.exists()) {
des.createNewFile();
}
String encodingUse = ((encoding == null) ? DEFAULT_ENCODING : encoding);
Reader in =
new BufferedReader(new InputStreamReader(new FileInputStream(src)));
//设定输出文件的编码
Writer out =
new BufferedWriter(new OutputStreamWriter(new FileOutputStream(des), encodingUse));
char[] buffer = new char[4096];
int readBytes = -1;
while((readBytes = in.read(buffer)) != -1) {
out.write(buffer, 0, readBytes);
}
out.flush();
out.close();
in.close();
System.out.println("Copy file from [" + src.getAbsolutePath() + "] to [" + des.getAbsolutePath() + "]");
}
class TxtFileFilter implements FileFilter {
public boolean accept(File pathname) {
if(pathname.isDirectory()) {
return true;
}
String absolutePath = pathname.getAbsolutePath();
String suffix = absolutePath.substring(absolutePath.length() - 3);
//只拷贝txt文件
if("txt".equalsIgnoreCase(suffix)) {
return true;
}
return false;
}
}
private File inFile; //输入路径
private File outFile; //输出路径
private String encoding; //输出文件编码
private static String DEFAULT_ENCODING = "GBK";
}
* 给定一个源文件路径或者File和目标路径,把源文件路径下的的所有txt文件和文件夹拷贝到目标路径下
* 并且可以按照给定的编码输出txt文件
* @author myyate
*
*/
public class Converter {
public Converter(String inPath, String outPath) throws Exception {
this(inPath, outPath, DEFAULT_ENCODING);
}
public Converter(String inPath, String outPath, String encoding) throws Exception {
this(new File(inPath), new File(outPath), encoding);
}
public Converter(File inFile, File outFile) throws Exception {
this(inFile, outFile, DEFAULT_ENCODING);
}
public Converter(File inFile, File outFile, String encoding) throws Exception {
this.inFile = inFile;
this.outFile = outFile;
if(!outFile.exists()) {
outFile.mkdir();
}
this.encoding = encoding;
}
public void convert() throws Exception {
copyFiles(inFile, outFile);
}
private void copyFiles(File inDirectory, File outDirectory) throws Exception {
for(File file : inDirectory.listFiles(new TxtFileFilter())) {
File outFile = new File(outDirectory.getAbsolutePath(), file.getName());
if(file.isFile()) {
//如果是文件,就把文件拷贝到目标文件夹中
copySingleFile(file, outFile);
} else if(file.isDirectory()) {
if(!outFile.exists()) {
outFile.mkdir();
System.out.println("Create directory [" + outFile.getAbsolutePath() + "]");
}
copyFiles(file, outFile);
}
}
}
private void copySingleFile(File src, File des) throws Exception {
if(!des.exists()) {
des.createNewFile();
}
String encodingUse = ((encoding == null) ? DEFAULT_ENCODING : encoding);
Reader in =
new BufferedReader(new InputStreamReader(new FileInputStream(src)));
//设定输出文件的编码
Writer out =
new BufferedWriter(new OutputStreamWriter(new FileOutputStream(des), encodingUse));
char[] buffer = new char[4096];
int readBytes = -1;
while((readBytes = in.read(buffer)) != -1) {
out.write(buffer, 0, readBytes);
}
out.flush();
out.close();
in.close();
System.out.println("Copy file from [" + src.getAbsolutePath() + "] to [" + des.getAbsolutePath() + "]");
}
class TxtFileFilter implements FileFilter {
public boolean accept(File pathname) {
if(pathname.isDirectory()) {
return true;
}
String absolutePath = pathname.getAbsolutePath();
String suffix = absolutePath.substring(absolutePath.length() - 3);
//只拷贝txt文件
if("txt".equalsIgnoreCase(suffix)) {
return true;
}
return false;
}
}
private File inFile; //输入路径
private File outFile; //输出路径
private String encoding; //输出文件编码
private static String DEFAULT_ENCODING = "GBK";
}
测试程序如下:
public class Test {
static String IN_PATH = "F:/Novel";
static String OUT_PATH = "F:/NovelConvert";
public static void main(String[] args) throws Exception {
Converter convert = new Converter(IN_PATH, OUT_PATH, "Unicode");
convert.convert();
}
}
static String IN_PATH = "F:/Novel";
static String OUT_PATH = "F:/NovelConvert";
public static void main(String[] args) throws Exception {
Converter convert = new Converter(IN_PATH, OUT_PATH, "Unicode");
convert.convert();
}
}
程序是可以正常执行了,并且也转码了,不过不幸的是转成后的文件格式不是unicode,而是unicode big endian,拷贝到手机里还是乱码,nnd,现在也不管手机可否看了,我想问大家一下,如何修改才可以把txt文件改成unicode格式呢?