token | 易学教程

Ignore parentheses with string tokenizer?

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问题 I have an input that looks like: (0 0 0) I would like to ignore the parenthesis and only add the numbers, in this case 0, to an arraylist. I am using scanner to read from a file and this is what I have so far transitionInput = data.nextLine(); st = new StringTokenizer(transitionInput,"()", true); while (st.hasMoreTokens()) { transition.add(st.nextToken(",")); } However, the output looks like this [(0 0 0)] I would like to ignore the parentheses 回答1: You are first using () as delimiters, then

How to send and receive data via HTTP header using cURL?

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问题 I am trying to build a simple API to allow a client to send me data over HTTPS. I created a class that will take a username/password then it does a database look up. If the user is found then it issues a token. Then the token will be send back to the requester via HTTP header. Once a username, password and a token sent back then the script reads the data sent from the client via $_POST request and processes it. The challenge that I am having is sending the token to the requester via cURL and

给裸接口加一道防护，避免恶意盗刷和爬取

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> WEB应用是开放的，WEB前端代码也是公开的，和后端交互的接口如果没有经过特殊处理（加密/token），那么就是裸露的，只要知道api地址，那么就能随便获取应用数据。这样应用数据就很容易被人爬取或者恶意盗刷，典型的短信被恶意盗刷。公司理财产品的短信接口就是一个裸接口，只要手机号就可以任意盗刷，当然背后有根据手机号，ip地址做了请求限制，但还是不够。后面就加了一定时间内一定请求次数的Token，后面观察，基本没有被刷的迹象，说明新的机制还是起到很大作用。当然这个机制不仅是用于防短信盗刷，可用于任意的裸接口防护。原理很简单，就是在web页面请求的时候由后端按一定的算法注入token到页面中去，然后前端可以通过对应的规则取到token，在请求接口数据时带上去就能在后端对token进行验证，验证通过就能正常请求到数据。如果是native app ，可通过加密的方法请求接口来获取token，最简单直接的方式就是native app 客户端使用一段字符串+时间戳（从后端获取）进行加密，然后请求后端接口，接口对数据进行解密，对时间戳对比，在一段时间内认为有效（避免加密信息被拦截，所以加了时间戳校验），从而获取token。当然web应用都是公开的，所有源码理论上都是能获取到的

Is #include a token of type keyword?

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问题 While learning C I got my first topic which was tokens. When I look at this code is pretty easy to get the picture. int main() { int x, y, total; x = 10, y = 20; total = x + y; printf ("Total = %d \n", total); } so far so good... Now when I look at this one here: #include <stdio.h> int main() { /* code */ printf("Hello C world! \n"); return 0; } I wonder if the #include in #include <stdio.h> is a token. If yes, it should be a keyword right? 回答1: In the line #include <stdio.h> #include is a

session 防止表单重复提交

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防止表单重复提交应该现在前台做一遍，再在后台做一遍。这样双重安全而且减轻服务器负担。代码： package flying.form; import java.io.IOException; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; import java.util.Random; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import sun.misc.BASE64Encoder; //防止表单重复提交 public class FormServlet extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { //产生随机数（表单号）

Program using tokens and privileges

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问题 I want to create a C++ program with limited privileges. I made some research on the internet and found out that I have to create a token and then use the AdjustTokenPrivileges() method to alter its privileges. However, I didn't quite understand how this is to be done. Can someone please provide me with an example of how to create a token and disable its privileges? Thanks :) 回答1: Did you check out the example at Executing Privileged Operations Using C++ ? Seems like you just need to figure

Retrieving token from Email Angular 6

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问题 When a user register an email is sent to them from the API with a token to verify the user. an endpoint of the API requires the token to verify the user, how do I get the token and post it to the API 回答1: Include a clickable url in your registrationmail which includes the token as query parameter. e.g. https://website.com/confirmRegistration?token=insertTokenHere then create a component and a route for /confirmRegistration, inject ActivatedRoute into that component and read the token with

Parsing CSV file by splitting with strsep

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问题 I'm getting some unwanted output when attempting to parse a comma seperated value file with strsep(). It seems be be working for half of the file, with a number with only one value (ie. 0-9), but as soon as multiple values are added like for instance 512, It will print 512 12 2 512 12 2 and so on. I'm not exactly sure if this is due to the particular style that I'm looping? Not really sure. int main() { char line[1024]; FILE *fp; int data[10][10]; int i = 0; int j = 0; fp = fopen("file.csv",

How can I get authorization token in rest API using rest assured? Is it possible?

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问题 Currently using Postman I have to do post request to API_URL/login and I pass username and password and in return i get token see below: Example Request: /login POST Body { "username": "admin", "password": "admin" } Return { "token": "1234-56789-..." } Can you tell me how would I do .. i tried using .parameters but it says deprecated... 回答1: You'd have to know what the schema is of the response. For instance, if the output is like thus: { "success": true, "authorization_token":

Create new tokens and tuples from existing ones based on conditions

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问题 This is very related to a previous question but I am having difficulties adapting for my use case. I have a sentence: "Forbes Asia 200 Best Under 500 Billion 2011" I have tokens like: oldTokens = [u'Forbes', u'Asia', u'200', u'Best', u'Under', u'500', u'Billion', u'2011'] And the indices of where a previous parser has figured out where there should be location or number slots: numberTokenIDs = {(7,): 2011.0, (2,): 200.0, (5,6): 500000000000.00} locationTokenIDs = {(0, 1): u'Forbes Asia'} The