java字符编码转换

来源：互联网发布：网络机顶盒推荐编辑：程序博客网时间：2024/04/25 21:53

import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.io.UnsupportedEncodingException;
import java.io.Writer;
import java.util.Properties;
import java.io.FileInputStream;
public class PublicFun {
/**
* 将字符串编码格式转成GB2312
*
* @param str
* @return
*/
public static String TranEncodeTOGB(String str) {
try {
String strEncode = PublicFun.getEncoding(str);
String temp = new String(str.getBytes(strEncode), "GB2312");
return temp;
} catch (java.io.IOException ex) {
return null;
}
}
/**
* 将字符串编码格式转成UTF8
*
* @param str
* @return
*/
public static String TranEncodeTOUTF(String str) {
try {
String strEncode = PublicFun.getEncoding(str);
String temp = new String(str.getBytes(strEncode), "UTF-8");
return temp;
} catch (java.io.IOException ex) {
return null;
}
}
/**
* 判断输入字符是否为gb2312的编码格式
*
* @param c
* 输入字符
* @return 如果是gb2312返回真，否则返回假
*/
public static boolean isGB2312(char c) {
Character ch = new Character(c);
String sCh = ch.toString();
try {
byte[] bb = sCh.getBytes("gb2312");
if (bb.length > 1) {
return true;
}
} catch (java.io.UnsupportedEncodingException ex) {
return false;
}
return false;
}
/**
* 判断字符串的编码
*
* @param str
* @return
*/
public static String getEncoding(String str) {
String encode = "GB2312";
try {
if (str.equals(new String(str.getBytes(encode), encode))) {
String s = encode;
return s;
}
} catch (Exception exception) {
}
encode = "ISO-8859-1";
try {
if (str.equals(new String(str.getBytes(encode), encode))) {
String s1 = encode;
return s1;
}
} catch (Exception exception1) {
}
encode = "UTF-8";
try {
if (str.equals(new String(str.getBytes(encode), encode))) {
String s2 = encode;
return s2;
}
} catch (Exception exception2) {
}
encode = "GBK";
try {
if (str.equals(new String(str.getBytes(encode), encode))) {
String s3 = encode;
return s3;
}
} catch (Exception exception3) {
}
return "";
}
}