(1)js

// 获取url参数

function getQueryString(url, name) {

console.log("url = " + url)

console.log("name = " + name)

var reg = new RegExp('(^|&|/?)' + name + '=([^&|/?]*)(&|/?|$)', 'i')

var r = url.substr(1).match(reg)

if (r != null) {

console.log("r = " + r)

console.log("r[2] = " + r[2])

return r[2]

}

return null;

}

(2)java

package com.jala.kdb.util;

import java.util.Map;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

/**

* @author ZF

* @date 2019年3月19日 下午3:15:21

* @param

*/

public class UrlUtils {

/**

* 在指定url后追加参数 *

* @param url

* @param data 参数集合 key = value

* @return

*/

private static String appendUrl(String url, Map data) {

String newUrl = url;

StringBuffer param = new StringBuffer();

for (String key : data.keySet()) {

param.append(key + "=" + data.get(key).toString() + "&");

}

String paramStr = param.toString();

paramStr = paramStr.substring(0, paramStr.length() - 1);

if (newUrl.indexOf("?") >= 0) {

newUrl += "&" + paramStr;

} else {

newUrl += "?" + paramStr;

}

return newUrl;

}

/**

* 获取指定url中的某个参数

* @param url

* @param name

* @return

*/

public static String getParamByUrl(String url, String name) {

url += "&";

String pattern = "(\\?|&){1}#{0,1}" + name + "=[a-zA-Z0-9]*(&{1})";

Pattern r = Pattern.compile(pattern);

Matcher m = r.matcher(url);

if (m.find( )) {

System.out.println(m.group(0));

return m.group(0).split("=")[1].replace("&", "");

} else {

return null;

}

}

public static void main(String[] args) throws Exception {

// Map param = new HashMap<>();

// param.put("id", 1);

// param.put("age", 18);

// System.out.println(appendUrl("http://test.com", param));

// System.out.println(appendUrl("http://test.com?name=a", param));

// String url = "http://test.com?name=abd&id=1&age=18";

String url = "http://www.xxxxx.com/login.do?#access_token=xxxx&express_id=yyyyy";

System.out.println(getParamByUrl(url, "express_id"));

}

}