Java String字符串和Unicode字符相互转换代码

/**
 * 字符串转换unicode
 */
public static String string2Unicode(String string) {
 
    StringBuffer unicode = new StringBuffer();
 
    for (int i = 0; i < string.length(); i++) {
 
        // 取出每一个字符
        char c = string.charAt(i);
 
        // 转换为unicode
        unicode.append("\u" + Integer.toHexString(c));
    }
 
    return unicode.toString();
}

/**
 * unicode 转字符串
 */
public static String unicode2String(String unicode) {
 
    StringBuffer string = new StringBuffer();
 
    String[] hex = unicode.split("\\u");
 
    for (int i = 1; i < hex.length; i++) {
 
        // 转换出每一个代码点
        int data = Integer.parseInt(hex[i], 16);
 
        // 追加成string
        string.append((char) data);
    }
 
    return string.toString();
}

public static void main(String[] args) {
    String test = "最代码网站地址:www.zuidaima.com";
 
    String unicode = string2Unicode(test);
     
    String string = unicode2String(unicode) ;
     
    System.out.println(unicode);
     
    System.out.println(string);
 
}