java进行url编码和解码

　　 public static String getURLEncoderString(String str) {

        String result = "";

        if (null == str) {

            return "";

        }

        try {

            result = java.net.URLEncoder.encode(str, "UTF-8");

        } catch (UnsupportedEncodingException e) {

            e.printStackTrace();

        }

        return result;

    }

    public static String URLDecoderString(String str) {

        String result = "";

        if (null == str) {

            return "";

        }

        try {

            result = java.net.URLDecoder.decode(str, "UTF-8");

        } catch (UnsupportedEncodingException e) {

            e.printStackTrace();

        }

        return result;

    }

注意：java.net的url编码方法在对一些特殊符号编码时有个bug，如：+号decord时，+号会变成空格，需要把+号替换成%2B，str=str.replaceAll("\\+", "%2B");