- 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.InputStream;
- import java.io.InputStreamReader;
- import java.io.OutputStreamWriter;
- import java.io.Writer;
- /**
- *
- * @Title:ChangeFileCode.java
- * @Package:com.pde.pdp.ffc.util
- * @Description: 更改文件编码
- * @author guods
- * @date 2012-7-5 下午02:10:16
- * @version 1.0
- */
- public class ChangeFileCode {
- // 读取的文件
- private String fileIn;
-
- // 读取时文件用的编码
- private String fileInEn;
-
- // 写出的文件
- private String fileOut;
-
- // 写出时文件用的编码
- private String fileOutEn;
-
- /**
- * 获取源文件的编码
- * @param filePath 源文件所在的绝对路径
- * @return
- */
- public String getFileEnCode(String filePath) {
- InputStream inputStream = null;
- String code = "";
- byte[] head = new byte[3];
- try {
- inputStream = new FileInputStream(filePath);
- inputStream.read(head);
- } catch (IOException e) {
- e.printStackTrace();
- } finally {
- try {
- if(inputStream!=null)
- inputStream.close();
- } catch (IOException e) {
- //e.printStackTrace();
- }
- }
- code = "GB2312";
- if (head[0] == -1 && head[1] == -2 )
- code = "UTF-16";
- if (head[0] == -2 && head[1] == -1 )
- code = "Unicode";
- if(head[0]==-17 && head[1]==-69 && head[2] ==-65)
- code = "UTF-8";
- return code;
- }
-
- public void setFileIn(String fileInPath, String fileInEncoding) {
- this.setFileIn(fileInPath);
- this.setFileInEn(fileInEncoding);
- }
-
- public void setFileOut(String fileOutPath, String fileOutEncoding) {
- this.setFileOut(fileOutPath);
- this.setFileOutEn(fileOutEncoding);
- }
-
- public void start() {
- String str = this.read(fileIn,fileInEn);
- this.write(fileOut, fileOutEn, str);
- }
-
- /**
- * 读文件
- *
- * @param fileName
- * @param encoding
- */
- private String read(String fileName, String encoding) {
- try {
- BufferedReader in = new BufferedReader(new InputStreamReader(
- new FileInputStream(fileName), encoding));
-
- String string = "";
- String str = "";
- while ((str = in.readLine()) != null) {
- string += str + "\n";
- }
- in.close();
- return string;
- } catch (Exception ex) {
- //ex.printStackTrace();
- }
- return "";
- }
-
- /**
- * 写文件
- *
- * @param fileName
- * 新的文件名
- * @param encoding
- * 写出的文件的编码方式
- * @param str
- */
- private void write(String fileName, String encoding, String str) {
- try {
- Writer out = new BufferedWriter(new OutputStreamWriter(
- new FileOutputStream(fileName), encoding));
- out.write(str);
- out.close();
- } catch (Exception ex) {
- //ex.printStackTrace();
- }
- }
-
- public String getFileIn() {
- return fileIn;
- }
-
- public void setFileIn(String fileIn) {
- this.fileIn = fileIn;
- }
-
- public String getFileInEn() {
- return fileInEn;
- }
-
- public void setFileInEn(String fileInEn) {
- this.fileInEn = fileInEn;
- }
-
- public String getFileOut() {
- return fileOut;
- }
-
- public void setFileOut(String fileOut) {
- this.fileOut = fileOut;
- }
-
- public String getFileOutEn() {
- return fileOutEn;
- }
-
- public void setFileOutEn(String fileOutEn) {
- this.fileOutEn = fileOutEn;
- }
-
-
- public static void main(String[] args) {
- String InputFilePath = "f:\\";
- String FileName = "2.txt";
-
- ChangeFileCode changeFileCode = new ChangeFileCode();
- String path = InputFilePath+FileName;
- File file = new File(path);
- String fileCode = changeFileCode.getFileEnCode(path);
-
- if(fileCode!=null && !"".equals(fileCode) && !"UTF-8".equals(fileCode)) {
- changeFileCode.setFileIn(file.getPath(), fileCode);//如果文件编码为ANSI用GBK来读,如果是UTF-8用UTF-8来读
- changeFileCode.setFileOut(file.getPath(), "UTF-8");//UTF-8则文件编码为UTF-8, 如果为GBK,编码为ANSI
- changeFileCode.start();
- }
- }
- }
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