实现字符串的编码转换，用以解决字符串乱码问题

引起乱码的情况很多~实质上主要是字符串本身的编码格式与程序所需要的编码格式不一致导致的。要解决乱码其实很简单，

分2步：

　　1：获取到字符串本身的编码

　　2：改变字符串编码（本身编码 -> 新编码）

话不多说，直接贴代码

package cn.sccl.framework.util;import org.apache.commons.lang3.StringUtils;import java.io.UnsupportedEncodingException;
/*** 字符编码工具类** @author _minus* @create 2017-11-06 18:38*/
public class CharsetUtils {private enum Charset {/** 7位ASCII字符，也叫作ISO646-US、Unicode字符集的基本拉丁块 */US_ASCII("US-ASCII","位ASCII字符，也叫作ISO646-US、Unicode字符集的基本拉丁块 "),ISO_8859_1("ISO-8859-1","ISO 拉丁字母表 No.1，也叫作 ISO-LATIN-1"),UTF_8("UTF-8","8 位 UCS 转换格式"),UTF_16BE("UTF-16BE","16 位 UCS 转换格式，Big Endian（最低地址存放高位字节）字节顺序"),UTF_16LE("UTF_16LE","16 位 UCS 转换格式，Big Endian（最低地址存放高位字节）字节顺序"),UTF_16("UTF_16","16 位 UCS 转换格式，字节顺序由可选的字节顺序标记来标识"),GBK("GBK","中文超大字符集");private String encode;private String desc;public String getEncode() {return encode;}public void setEncode(String encode) {this.encode = encode;}public String getDesc() {return desc;}public void setDesc(String desc) {this.desc = desc;}private Charset(String encode, String desc){this.encode =encode;this.desc = desc ;}}/*** 获取传入字符串的编码格式* @param str* @return*/public static String getEncode(String str) throws UnsupportedEncodingException {if (!StringUtils.isEmpty(str)){for (Charset charset : Charset.values()) {if (str.equals(new String(str.getBytes(charset.getEncode()),charset.getEncode()))){return charset.getEncode();}}}throw new UnsupportedEncodingException("编码库中不存在");}/*** 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 static String changeCharset(String str, String newCharset)throws UnsupportedEncodingException {if (str != null) {//获取到原字符编码String charsetName = getEncode(str);//用默认字符编码解码字符串。byte[] bs = str.getBytes(charsetName);//用新的字符编码生成字符串return new String(bs, newCharset);}return null;}/*** 将字符编码转换成US-ASCII码*/public static String toASCII(String str) throws UnsupportedEncodingException {return changeCharset(str, Charset.US_ASCII.getEncode());}/*** 将字符编码转换成ISO-8859-1码*/public static String toISO_8859_1(String str) throws UnsupportedEncodingException {return changeCharset(str, Charset.ISO_8859_1.getEncode());}/*** 将字符编码转换成UTF-8码*/public static String toUTF_8(String str) throws UnsupportedEncodingException {return changeCharset(str, Charset.UTF_8.getEncode());}/*** 将字符编码转换成UTF-16BE码*/public static String toUTF_16BE(String str) throws UnsupportedEncodingException {return changeCharset(str, Charset.UTF_16BE.getEncode());}/*** 将字符编码转换成UTF-16LE码*/public static String toUTF_16LE(String str) throws UnsupportedEncodingException {return changeCharset(str, Charset.UTF_16LE.getEncode());}/*** 将字符编码转换成UTF-16码*/public static String toUTF_16(String str) throws UnsupportedEncodingException {return changeCharset(str,Charset.UTF_16.getEncode());}/*** 将字符编码转换成GBK码*/public static String toGBK(String str) throws UnsupportedEncodingException {return changeCharset(str, Charset.GBK.getEncode());}}