代码下载地址:http://www.zuidaima.com/share/1795356301560832.htm
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)