base64

JSON parse error: Cannot deserialize instance of `byte[]` out of START_OBJECT token

五迷三道 提交于 2019-12-25 18:04:12
问题 How to send a base64 image in postman json format. I was added image file in postman- body form data and it's encode details in json format but i got a bad request only in my attempts. [JSON parse error: Cannot deserialize instance of byte[] out of START_OBJECT token]. found that there is no error in source but the actual issue in json format in postman. SOURCE: https://github.com/arun0009/ocr-tess4j-rest I applied a stack overflow solution but it's repeating the same error. I was adding [] ,

Upload file from android to mysql database with Base64?

十年热恋 提交于 2019-12-25 18:02:46
问题 I am creating an android mobile application in which user can upload a file to the server. I successful to upload image to server by using the following code : public String getStringImage(Bitmap bmp){ ByteArrayOutputStream baos = new ByteArrayOutputStream(); bmp.compress(Bitmap.CompressFormat.JPEG, 100, baos); byte[] imageBytes = baos.toByteArray(); String encodedImage = Base64.encodeToString(imageBytes, Base64.DEFAULT); return encodedImage; } I try to send a file by using the following code

Problems with CryptoPP C++ AES-256+Base64

筅森魡賤 提交于 2019-12-25 17:18:06
问题 could someone please tell me as to why the decryption starts to mess up. It works fine with short strings but it will mess up as you can see as it goes on. I THINK it has something to do with the string conversions. std::string encrypt(const std::string& str_in, const std::string& key, const std::string& iv) { std::string str_out; CryptoPP::CFB_Mode<CryptoPP::AES>::Encryption encryption((byte*)key.c_str(), key.length(), (byte*)iv.c_str()); CryptoPP::StringSource encryptor(str_in, true, new

Python开发GUI实战:图片转换素描画工具!

半腔热情 提交于 2019-12-25 15:04:53
​ 今天被这句话触动了,所以开篇分享给大家。鸡汤有毒,但有时大家却靠它激励自己继续前行! python开发GUI 程序员的自我救赎,使用python开发性格分析工具 这篇文章,通过Python编写了GUI的性格分析工具。一位从我公众号开始结识的朋友,询问关于如何快速编写一个exe工具的问题。由于功能简单且之前无相关GUI编程基础,为了快速完成开发,我向他推荐了easygui模块。 python作为胶水语言,几乎没有不能做的事情,但个人一直觉得在GUI开发方面,python可以算作是短板了,为什么?因为性能…python的性能问题,往往出现在其他编程语言对其的鄙夷中。但不管如何python在GUI编程上,也是有大量优秀模块的。 1 tkinter ​ 也许有些人不知道这个模块,但如果你安装python后,使用过自带的IDLE,那么你就应该了解它。tkinter作为python自带的GUI模块,IDLE便是通过该模块开发的,也是我比较喜欢的一个模块。 2 easygui 第一次了解这个模块,还是在小甲鱼的《零基础入门学习python》时学习的,它对Tkinter进行了二次封装,使得GUI操作变得更为简单,但同时也局限于表层的使用,无法自定义更优雅的实现方案。 3 wxpython ​ wxpython是一个Python对于wxWidgets(这是用 C++ 编写)包装后的产物

Which character produces “%3Q” from urllib.quote?

浪尽此生 提交于 2019-12-25 13:09:19
问题 We're encoding urls with user-supplied data using python's urllib.quote() ; one of the urls is producing a string with the following substring: '%3Q' I'm trying to figure out what the original user-supplied character is, but am getting stumped: I can't seem to find any resource that mentions the character that produces this output from urllib.quote() . Strangely, there are no results in stackoverflow with this string of characters. It's also important to note that the user-supplied data is

Which character produces “%3Q” from urllib.quote?

陌路散爱 提交于 2019-12-25 13:09:11
问题 We're encoding urls with user-supplied data using python's urllib.quote() ; one of the urls is producing a string with the following substring: '%3Q' I'm trying to figure out what the original user-supplied character is, but am getting stumped: I can't seem to find any resource that mentions the character that produces this output from urllib.quote() . Strangely, there are no results in stackoverflow with this string of characters. It's also important to note that the user-supplied data is

企业内部工作流实战_26_flowable 变量判断汇总

▼魔方 西西 提交于 2019-12-25 10:36:00
项目地址: https://gitee.com/lwj/flowable.git 分支flowable-base 变量判断种类 变量判断表达式 表达式说明 ①判断变量是否相等 <![CDATA[${variables:get(myVar) == "00000001"}]]> 传入字符串是否等于字符串00000001 ②判断传入的list变量是否相等 <![CDATA[${var:contains(myVar, 1, 2)}]]> 传入list 判断是否相等 ③判断传入的list变量任意有一个值在其中返回true <![CDATA[${var:containsAny(myVar, 1, 2)}]]> 传入list 判断传入list的任意有一个在1,2中就返回true ④判断传入的变量是否相等 <![CDATA[${var:eq(myVar, 123)}]]> 判断的值等于123 ⑤判断传入的变量是否存在 <![CDATA[${var:exists('myVar')}]]> 判断变量是否有这个值 ⑥判断传入的变量是否大于 <![CDATA[${var:gt('myVar', 10)}]]> 判断值是否是大于10 ⑦判断传入的变量是否大于等于 <![CDATA[${var:gte('myVar', 10)}]]> 判断值是否是大于等于10 ⑧判断传入的变量是否等于空串 <![CDATA[

R plot base64 string

佐手、 提交于 2019-12-25 08:47:04
问题 How do I plot a b64 string of a png or jpeg, as an image in R? I have tried: z <-"/9j/4AAQSkZJRgABAQEASABIAAD/2wBDAAIBAQIBAQICAgICAgICAwUDAwMDAwYEBAMFBwYHBwcGBwcICQsJCAgKCAcHCg0KCgsMDAwMBwkODw0MDgsMDAz/wAALCAAgACABAREA/8QAGAABAQEBAQAAAAAAAAAAAAAABQYDBAH/xAAjEAABBQEAAgMBAQEBAAAAAAACAQMEBQYHCBIRExQhACJB/9oACAEBAAA/ABMfwnJcK0WrucdoMdrtpQ3IQOm+VPVq49RGh6AvT2qcjUGhrY2jZChASC4X/BtkSo4yiadt3/R6/esuXXbvKuv0QwGJ05nWeR+b5bOeJ1FNHQysaHPkQWFD1JBmI2oi4Psif34e028heSoUhdBl3

base 64 string to hexa string

拈花ヽ惹草 提交于 2019-12-25 07:47:52
问题 How can i conver from base64 string to hexa string (i'm working in ubuntu - c++ code). My hexa string I would like to be like 0x0c....and so on. Need help. Can someone please give me an exaple?Thx! 回答1: A quick solution that uses common (though not standard) functions: std::string input = MY_ENCODED_STRING; unsigned long decoded_value = strtol(input.c_str(), NULL, 64); char buffer[100] = {0}; std::string output = itoa(decoded_value, buffer, 16); boost::lexical_cast may be able to provide a

2018铁三测评题write以及一些想送给你们的话

倖福魔咒の 提交于 2019-12-25 04:41:57
一.、前言   此文献给实验室的萌新们,以及刚刚接触CTF的同学们,希望能对你们的成长起到一些帮助。 二、关于CTF   可能你已经接触过CTF或者对它有所了解,这里我再简单介绍一下。 1.什么是CTF?   CTF(Capture The Flag)中文一般译作夺旗赛,是网络安全技术人员之间进行技术竞技的一种比赛形式,起源于1996年DEFCON全球黑客大会,以比赛形式模拟代替黑客们之间的真实技术比拼。 2.CTF比赛模式 模式 说明 解题模式 参赛队伍通过互联网或者现场网络参与,类似于各位此次做的线上测评题目,你可以理解为在线答题环节,通过解决网络安全技术挑战题目的分值和时间来排名,通常用于在线选拔赛。题目主要包含 Web安全、逆向、密码学、数据分析、隐写、安全编程、代码审计与漏洞挖掘利用 等。 攻防模式 参赛队伍在网络环境内互相进行攻击和防守, 挖掘网络服务漏洞 并攻击对手服务器获得分数,并且通过修补自身服务漏洞进行防御来避免丢分。这种模式竞争较为激烈,比拼参赛队员的智力和技术、团队之间的分工配合与合作、也比拼体力。 混合模式 结合了上面说的解题模式与攻防模式 ,赛制较为灵活。 三、测评题目分析 1.你是管理员吗? 解题链接: http://ctf4.shiyanbar.com/web/root/index.php   第一道题目是一个Web题。通常拿到Web题