去除url中的& = ；并到Map中的方法：

public static Map<String, Object> transStringToMap(String mapString, String separator, String pairSeparator) {
        Map<String, Object> map = new HashMap<String, Object>();
        String[] fSplit = mapString.split(separator);
        System.out.println("fSplit.length" + fSplit.length);
        for (int i = 0; i < fSplit.length; i++) {
            if (fSplit[i] == null || fSplit[i].length() == 0) {
                continue;
            }
            String[] sSplit = fSplit[i].split(pairSeparator);
            String value = fSplit[i].substring(fSplit[i].indexOf('=') + 1, fSplit[i].length());
            map.put(sSplit[0], value);
        }

        return map;
    }