代码下载地址：/share/1795356301560832.htm
原文:分享万能java字符串编码转换工具类
package com.zuidaima.util;import java.io.UnsupportedEncodingException;/*** 转换字符串的编码*/public class ChangeCharset {/** 7位ASCII字符，也叫作ISO646-US、Unicode字符集的基本拉丁块 */public static final String US_ASCII = "US-ASCII";/** ISO 拉丁字母表 No.1，也叫作 ISO-LATIN-1 */public static final String ISO_8859_1 = "ISO-8859-1";/** 8 位 UCS 转换格式 */public static final String UTF_8 = "UTF-8";/** 16 位 UCS 转换格式，Big Endian（最低地址存放高位字节）字节顺序 */public static final String UTF_16BE = "UTF-16BE";/** 16 位 UCS 转换格式，Little-endian（最高地址存放低位字节）字节顺序 */public static final String UTF_16LE = "UTF-16LE";/** 16 位 UCS 转换格式，字节顺序由可选的字节顺序标记来标识 */public static final String UTF_16 = "UTF-16";/** 中文超大字符集 */public static final String GBK = "GBK";/*** 将字符编码转换成US-ASCII码*/public String toASCII(String str) throws UnsupportedEncodingException {return this.changeCharset(str, US_ASCII);}/*** 将字符编码转换成ISO-8859-1码*/public String toISO_8859_1(String str) throws UnsupportedEncodingException {return this.changeCharset(str, ISO_8859_1);}/*** 将字符编码转换成UTF-8码*/public String toUTF_8(String str) throws UnsupportedEncodingException {return this.changeCharset(str, UTF_8);}/*** 将字符编码转换成UTF-16BE码*/public String toUTF_16BE(String str) throws UnsupportedEncodingException {return this.changeCharset(str, UTF_16BE);}/*** 将字符编码转换成UTF-16LE码*/public String toUTF_16LE(String str) throws UnsupportedEncodingException {return this.changeCharset(str, UTF_16LE);}/*** 将字符编码转换成UTF-16码*/public String toUTF_16(String str) throws UnsupportedEncodingException {return this.changeCharset(str, UTF_16);}/*** 将字符编码转换成GBK码*/public String toGBK(String str) throws UnsupportedEncodingException {return this.changeCharset(str, GBK);}/*** 字符串编码转换的实现方法* * @param str* 待转换编码的字符串* @param newCharset* 目标编码* @return* @throws UnsupportedEncodingException*/public String changeCharset(String str, String newCharset)throws UnsupportedEncodingException {if (str != null) {// 用默认字符编码解码字符串。byte[] bs = str.getBytes();// 用新的字符编码生成字符串return new String(bs, newCharset);}return null;}/*** 字符串编码转换的实现方法* * @param str* 待转换编码的字符串* @param oldCharset* 原编码* @param newCharset* 目标编码* @return* @throws UnsupportedEncodingException*/public String changeCharset(String str, String oldCharset, String newCharset)throws UnsupportedEncodingException {if (str != null) {// 用旧的字符编码解码字符串。解码可能会出现异常。byte[] bs = str.getBytes(oldCharset);// 用新的字符编码生成字符串return new String(bs, newCharset);}return null;}public static void main(String[] args) throws UnsupportedEncodingException {ChangeCharset test = new ChangeCharset();String str = "This is a 中文的 String!";System.out.println("str: " + str);String gbk = test.toGBK(str);System.out.println("转换成GBK码: " + gbk);System.out.println();String ascii = test.toASCII(str);System.out.println("转换成US-ASCII码: " + ascii);gbk = test.changeCharset(ascii, ChangeCharset.US_ASCII,ChangeCharset.GBK);System.out.println("再把ASCII码的字符串转换成GBK码: " + gbk);System.out.println();String iso88591 = test.toISO_8859_1(str);System.out.println("转换成ISO-8859-1码: " + iso88591);gbk = test.changeCharset(iso88591, ChangeCharset.ISO_8859_1,ChangeCharset.GBK);System.out.println("再把ISO-8859-1码的字符串转换成GBK码: " + gbk);System.out.println();String utf8 = test.toUTF_8(str);System.out.println("转换成UTF-8码: " + utf8);gbk = test.changeCharset(utf8, ChangeCharset.UTF_8, ChangeCharset.GBK);System.out.println("再把UTF-8码的字符串转换成GBK码: " + gbk);System.out.println();String utf16be = test.toUTF_16BE(str);System.out.println("转换成UTF-16BE码:" + utf16be);gbk = test.changeCharset(utf16be, ChangeCharset.UTF_16BE,ChangeCharset.GBK);System.out.println("再把UTF-16BE码的字符串转换成GBK码: " + gbk);System.out.println();String utf16le = test.toUTF_16LE(str);System.out.println("转换成UTF-16LE码:" + utf16le);gbk = test.changeCharset(utf16le, ChangeCharset.UTF_16LE,ChangeCharset.GBK);System.out.println("再把UTF-16LE码的字符串转换成GBK码: " + gbk);System.out.println();String utf16 = test.toUTF_16(str);System.out.println("转换成UTF-16码:" + utf16);gbk = test.changeCharset(utf16, ChangeCharset.UTF_16LE,ChangeCharset.GBK);System.out.println("再把UTF-16码的字符串转换成GBK码: " + gbk);String s = new String("中文".getBytes("UTF-8"), "UTF-8");System.out.println(s);}}
输出结果：
另外关于java字符编码可以参考这个帖子:Java编码浅析（注意区分三个概念）
