JavaScript对字符编码

function encodeURL(sStr) {   
 	return escape(sStr).replace(/\+/g, '%2B').replace(/\"/g,'%22').replace(/\'/g, '%27').replace(/\//g,'%2F');   
}

   使用上面的函数将传入后台的字符进行编码后台再通过解码方式解码就可以或许到“+”等特殊字符了

/**
	 * @description对UTF-8 的字符串进行解码 
	 * @return String
	 */
	public static String unEscape(String src) {
		StringBuffer tmp = new StringBuffer();
		tmp.ensureCapacity(src.length());
		int lastPos = 0;
		int pos = 0;
		char ch;
		while (lastPos < src.length()) {
			pos = src.indexOf("%", lastPos);
			if (pos == lastPos) {
				if (src.charAt(pos + 1) == 'u') {
					ch = (char) Integer.parseInt(src
							.substring(pos + 2, pos + 6), 16);
					tmp.append(ch);					
					lastPos = pos + 6;
				} else {
					ch = (char) Integer.parseInt(src
							.substring(pos + 1, pos + 3), 16);
					tmp.append(ch);					
					lastPos = pos + 3;
				}
			} else {
				if (pos == -1) {
					tmp.append(src.substring(lastPos));
					lastPos = src.length();
				} else {
					tmp.append(src.substring(lastPos, pos));
					lastPos = pos;
				}
			}
		}
		return tmp.toString();
	}