java汉字和unicode互转

package com.imiansha.baseframe.commom.util;

import java.lang.Character.UnicodeBlock;

/** * @ClassName UnicodeTool.java * @Description 类实现描述:汉字和unicode互转 * @author leon 2015年12月11日 上午10:57:28 * @CopyRight 安徽中方电子商务有限公司 */
public class UnicodeTool {

    /** * 中文转换成 unicode * * @author leon 2016-3-15 * @param inStr * @return */
    public static String encodeUnicode(String inStr) {
        char[] myBuffer = inStr.toCharArray();

        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < inStr.length(); i++) {
            char ch = myBuffer[i];
            if (ch < 10) {
                sb.append("\\u000" + (int) ch);
                continue;
            }
            UnicodeBlock ub = UnicodeBlock.of(ch);
            if (ub == UnicodeBlock.BASIC_LATIN) {
                // 英文及数字等
                sb.append(myBuffer[i]);
            } else if (ub == UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS) {
                // 全角半角字符
                int j = myBuffer[i] - 65248;
                sb.append((char) j);
            } else {
                // 汉字
                int s = myBuffer[i];
                String hexS = Integer.toHexString(Math.abs(s));
                String unicode = "\\u" + hexS;
                sb.append(unicode.toLowerCase());
            }
        }
        return sb.toString();
    }

    /** * unicode 转换成 中文 * * @author leon 2016-3-15 * @param theString * @return */
    public static String decodeUnicode(String theString) {
        char aChar;
        int len = theString.length();
        StringBuffer outBuffer = new StringBuffer(len);
        for (int x = 0; x < len;) {
            aChar = theString.charAt(x++);
            if (aChar == '\\') {
                aChar = theString.charAt(x++);
                if (aChar == 'u') {
                    // Read the xxxx
                    int value = 0;
                    for (int i = 0; i < 4; i++) {
                        aChar = theString.charAt(x++);
                        switch (aChar) {
                            case '0':
                            case '1':
                            case '2':
                            case '3':
                            case '4':
                            case '5':
                            case '6':
                            case '7':
                            case '8':
                            case '9':
                                value = (value << 4) + aChar - '0';
                                break;
                            case 'a':
                            case 'b':
                            case 'c':
                            case 'd':
                            case 'e':
                            case 'f':
                                value = (value << 4) + 10 + aChar - 'a';
                                break;
                            case 'A':
                            case 'B':
                            case 'C':
                            case 'D':
                            case 'E':
                            case 'F':
                                value = (value << 4) + 10 + aChar - 'A';
                                break;
                            default:
                                throw new IllegalArgumentException("Malformed \\uxxxx encoding.");
                        }
                    }
                    outBuffer.append((char) value);
                } else {
                    if (aChar == 't') aChar = '\t';
                    else if (aChar == 'r') aChar = '\r';
                    else if (aChar == 'n') aChar = '\n';
                    else if (aChar == 'f') aChar = '\f';
                    outBuffer.append(aChar);
                }
            } else outBuffer.append(aChar);
        }
        return outBuffer.toString();
    }

}