Ascii工具类

package com.panchan.tsmese.utils;

public class AsciiUtils {

    /**
     * 字符串转换为Ascii
     * 
     * @param value
     * @return
     */
    public static String stringToAscii(String value) {
        StringBuffer sbu = new StringBuffer();
        char[] chars = value.toCharArray();
        for (int i = 0; i < chars.length; i++) {
            sbu.append(Integer.toHexString((int) chars[i]));
        }
        return sbu.toString();
    }

    /**
     * 字符串转换为Ascii含有逗号
     * @param value
     * @return
     */
    public static String stringToAsciiWithAppendComma(String value){
        StringBuffer sbu = new StringBuffer();
        char[] chars = value.toCharArray();
        for (int i = 0; i < chars.length; i++) {
            if (i != chars.length - 1) {
                sbu.append((int) chars[i]).append(",");
            } else {
                sbu.append((int) chars[i]);
            }
        }
        return sbu.toString();
    }
    
    /**
     * Ascii转换为字符串
     * 
     * @param value
     * @return
     */
    public static String asciiToString(String value) {
        StringBuffer sbu = new StringBuffer();
        
        value = value.trim();
        if(value.length()%2 > 0){
            return null;
        }
        
        int index = 0;
        while(index < value.length()){
            sbu.append((char) Integer.parseInt(value.substring(index, index+2), 16));
            index = index + 2;
        }

        return sbu.toString();
    }

}