java

Selenium - Find all elements of a web page

倾然丶 夕夏残阳落幕 提交于 2021-02-18 09:32:18
问题 I am planning a tool in Java which would have a drop down containing all the elements of a web page. Is there any way I can read those into a data structure? 回答1: Yes, there is a way. Here is some pseudo-code: List<WebElement> el = driver.findElements(By.cssSelector("*")); for ( WebElement e : el ) { add(e.tagName()); } 回答2: non-pseudo C# version of above: (although I'm just displaying the results in a console IReadOnlyCollection el = driver.FindElements(By.CssSelector("*")); foreach

Selenium - Find all elements of a web page

自古美人都是妖i 提交于 2021-02-18 09:31:13
问题 I am planning a tool in Java which would have a drop down containing all the elements of a web page. Is there any way I can read those into a data structure? 回答1: Yes, there is a way. Here is some pseudo-code: List<WebElement> el = driver.findElements(By.cssSelector("*")); for ( WebElement e : el ) { add(e.tagName()); } 回答2: non-pseudo C# version of above: (although I'm just displaying the results in a console IReadOnlyCollection el = driver.FindElements(By.CssSelector("*")); foreach

枚举类&&注解&&反射

家住魔仙堡 提交于 2021-02-18 09:25:14
枚举类 枚举类是优化定义固定对象的一种特殊的类。 换句话说,在需要类的实例为一个或者多个并且相对固定的时候,使用枚举类。(枚举类可扩展) <br> 类的实例相对来说固定的有日期,客观不变的一些数字等等。 enum WorkDay { MONDAY, THUEDAY, WEDNESDAY , THURSDAY , FRIDAY; } public class Main { public static void main(String[] args) { System.out.println("Hello World!"); WorkDay workDay; workDay=WorkDay.MONDAY; //WorkDay实例化的workday值限定在周一到周五之间 // workDay=3; //编译报错 WorkDay []workDays = WorkDay.values(); //返回枚举类型的对象数组 for(int i =0;i<workDays.length;i++) { System.out.println(workDays[i]); } /** * 单例模式是枚举类的特例,单例模式的要求是一个类只能由一个实例对象。 * 枚举类的使用是定义类时固定其一个或多个对象 * * 枚举类的特点: * - 类型安全(枚举类的定义就是固定的) * -

全球最厉害的14位程序员,大神收下我的膝盖

冷暖自知 提交于 2021-02-18 09:10:31
导读: 全球最厉害的14位程序员是谁?一起来看下让我们膜拜的这些大神都有哪些? 排名不分先后。 01 Jon Skeet 个人名望: 程序技术问答网站Stack Overflow总排名第一的大神,每月的问答量保持在425个左右。 个人简介/主要荣誉: 谷歌软件工程师,代表作有《深入理解C#(C# In Depth)》。 网络上对Jon Skeet的评价: “他根本不需要调试器,只要他盯一下代码,错误之处自会原形毕露。” “如果他的代码没有通过编译的时候,编译器就会道歉。” “他根本不需要什么编程规范,他的代码就是编程规范。” 02 Gennady Korotkevich 个人声望: 编程大赛神童 个人简介/主要荣誉: 年仅11岁时便参加国际信息学奥林比克竞赛,创造了最年轻选手的记录。在2007-2012年间,总共取得6枚奥赛金牌;2013年美国计算机协会编程比赛冠军队成员;2014年Facebook黑客杯冠军得主。截止目前,稳居俄编程网站Codeforces声望第一的宝座,在TopCoder算法竞赛中暂列榜眼位置。 网络上对Gennady Korotkevich的评价: “一个编程神童。” “他太令人惊讶了,他相当于我在白俄罗斯建立了一支强大的编程队伍。” “彻底的编程天才。” 03 Linus Torvalds 个人名望: Linux之父 个人简介/主要荣誉:

Java Object return type vs. Generic Methods

♀尐吖头ヾ 提交于 2021-02-18 09:01:14
问题 I saw several questions about generic return type, but none answers my question. If there is no bound for any of the arguments, such as the following method in JayWay : public static <T> T read(String json, String jsonPath, Filter... filters) { return new JsonReader().parse(json).read(jsonPath, filters); } What is the point of using this as generic ? I told the guys from my team that this method should be used as : JsonPath.<Boolean>read(currentRule, "$.logged") instead of: (boolean) JsonPath

Java Object return type vs. Generic Methods

与世无争的帅哥 提交于 2021-02-18 09:00:50
问题 I saw several questions about generic return type, but none answers my question. If there is no bound for any of the arguments, such as the following method in JayWay : public static <T> T read(String json, String jsonPath, Filter... filters) { return new JsonReader().parse(json).read(jsonPath, filters); } What is the point of using this as generic ? I told the guys from my team that this method should be used as : JsonPath.<Boolean>read(currentRule, "$.logged") instead of: (boolean) JsonPath

springboot整合dubbo\zookeeper做注册中心

半城伤御伤魂 提交于 2021-02-18 08:59:44
  springboot整合dubbo发布服务,zookeeper做注册中心。前期的安装zookeeper以及启动zookeeper集群就不说了。   dubbo-admin-2.5.4.war:dubbo服务管理项目,下载完后部署到tomcat即可查看(登录的用户名和密码默认都是root)。 pom文件引入dubbo以及zkcli包: <!-- 引入dubbo-spring-boot-starter以及zkclient依赖 --> < dependency > < groupId > com.alibaba.spring.boot </ groupId > < artifactId > dubbo-spring-boot-starter </ artifactId > < version > 2.0.0 </ version > </ dependency > < dependency > < groupId > com.101tec </ groupId > < artifactId > zkclient </ artifactId > < version > 0.9 </ version > </ dependency > 1.dubbo服务端(提供dubbo服务) 目录结构如下: 配置文件如下 application.properties #################

Can't fetch expanded URL from a given shortened URL

末鹿安然 提交于 2021-02-18 08:48:41
问题 I am given a shortened url and I want to get the expanded form. The below java function is used to achieve this. public String expand(String shortenedUrl){ URL url = null; try { url = new URL(shortenedUrl); } catch (MalformedURLException e) { e.printStackTrace(); } // open connection HttpURLConnection httpURLConnection = null; try { httpURLConnection = (HttpURLConnection) url.openConnection(Proxy.NO_PROXY); } catch (IOException e) { e.printStackTrace(); } // stop following browser redirect

Can't fetch expanded URL from a given shortened URL

橙三吉。 提交于 2021-02-18 08:48:09
问题 I am given a shortened url and I want to get the expanded form. The below java function is used to achieve this. public String expand(String shortenedUrl){ URL url = null; try { url = new URL(shortenedUrl); } catch (MalformedURLException e) { e.printStackTrace(); } // open connection HttpURLConnection httpURLConnection = null; try { httpURLConnection = (HttpURLConnection) url.openConnection(Proxy.NO_PROXY); } catch (IOException e) { e.printStackTrace(); } // stop following browser redirect

Implement SCD Type 2 in Spark

自闭症网瘾萝莉.ら 提交于 2021-02-18 08:47:47
问题 Trying to implement SCD Type 2 logic in Spark 2.4.4. I've two Data Frames; one containing 'Existing Data' and the other containing 'New Incoming Data'. Input and expected output are given below. What needs to happen is: All incoming rows should get appended to the existing data. Only following 3 rows which were previously 'active' should become inactive with appropriate 'endDate' populated as follows: pk=1, amount = 20 => Row should become 'inactive' & 'endDate' is the 'startDate' of