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java - Bouncy castle classes referring to DEREncodable causing NoClassDefFoundError

I'm using iText 7.1.10 and BC Prov 1.64. While verifying the signatures embedded with time-stamp, getting ... code snippet that triggering the calling to the bouncy castle library...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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vue-quill-editor 回车键不生效

1.输入内容后按下回车无反应，有时连续按下回车键两次才有换行效果 2.框内粘贴富文本内容后，按下回车无反应，再次用鼠标点击框内后才出现换行效果请问大家在使用vue-quill-editor时，遇到过回车键换行的问题吗？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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eslint 报 scss文件的错

如下图： npm run lint 时，base.scss文件报错 webpack配置如下 eslint配置如下...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - ValueError: bad input shape (560, 5) sklearn

I am starting to write the learnig machine model. I have a Y_train dataset containing the labels, there are 5 ... :] #train model train_train = regression_log.fit(X_train, Y_train)...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql三个表，学生表、课程表、学生对应课程表，需要输出学生对应的最新记录一条课程

学生对应的课程有多个但是有不同时间去对应的，需要输出学生最新选择的一门课，输出包括学生名字，课程名字求大佬...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How to fix error in Fuzzy Tree model using MATLAB?

I create a fuzzy tree (aggregated structure) in MATLAB and I have an error which I hope to be supported. My fuzzy tree has 3 fuzzy ... output = evalfis(aggTree,[0.2 0.25 0.3 0.2]);...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - Solved. Ejs Failed to lookup view. Works on localhost but doesnt work online

Solved. I feel stupid. I named file with first letter capital but been giving ejs file without first letter in capital. Idk how ... place where I have all my views. I am stuck :/...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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JS String传值后离开作用域被赋值的对象变成空字符串，问题出在哪里？

如题，我使用了Electron的截图方法，在data()函数中定义了一个picPath用来保存截图的目标路径（通过_self.picPath访问）截图成功后我用picPath存放forEach函数中的截图路径（只有一个所以直接用了字 ... // 打印正常路径 }) }) console.log(_self.picPath) // 打印 '' } }) }...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Catch exception in asyncio gather

Suppose there are several coroutines that we send to the event loop task_list = [task1(), task2(), task3()] res = ... code!) response = default if any(res is Error) else res...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How to add custom widget area to WooCommerce product category pages, just above the footer

I am trying to add a custom widget above the footer on all pages (except landing page). All has worked well except for ... theme is Astra. Any ideas of what else I can try? Thanks...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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流式处理因子计算的时候，怎么做到并行计算因子

关于因子计算假定我要计算100个因子每个因子耗时10毫秒加起来就耗时1秒这种情况怎么设计才能减少总的时间? 应用场景是接收行情、写入streamTable、计算因子、下发因子数据，怎么实现比较好？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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excel - Is ISNUMBER(MATCH) limited to a range>

I am trying to check if a value in 1 cell is the same as in specific other cells. I thought that I needed to use ... checking for, which is why I can't use a range. Thanks!...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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selenium模拟登录淘宝这招是行不通的吗？

url = "https://sycm.taobao.com/custom/login.htm?_target=http://sycm.taobao.com/portal/home.htm" options = webdriver.ChromeOptions() # 此步骤很重 ... 宝总是被检测到，是不是用selenium模拟登录淘宝这招是行不通的是吗？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript结合dva使用时报错

1.参数“_”隐式具有“any”类型。 2.绑定元素“call”隐式具有“any”类型。我给参数后面加上any类型后就不报错了这样的解决办法肯定不是最好的，请问各位大神这样的报错应该怎么解决呢，多谢多谢！...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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table合并代码没搞懂里面的变量问题

<template> <div> <center> <table border="1"> <thead> <tr> <th>序号</th> <th>项目</th> <th>分类</th> <th>分项</th> <th>现场管理</th> < ... 有 this.tableData 里面没有那么多数据，但是打印的时候就莫名其妙的跑出很多属性，这是为什么？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Java中线程TERMINATED了，对应线程的实例不会被GC进而GC掉threadLocals吗？

问题的起因在于网上的资料广泛地说ThreadLocal使用弱引用避免内存泄漏可是当线程TERMINATED后，对应线程的实例不被GC吗？（当然，此处不考虑线程池那种一个线程复用的情况）线程对应的实例如果被GC了，那么实例内部的成员变量所保 ... 强引用不复存在，下一次GC不就会把堆上的键和值都GC了么？这样不使用弱引用不也没有造成内存泄漏么? 谢谢...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - What does a "Cannot find symbol" or "Cannot resolve symbol" error mean?

Please explain the following about "Cannot find symbol", "Cannot resolve symbol" or "Symbol not found" errors: ... comprehensive Q&A about these common compilation errors in Java....

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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一个 https 域名如何在浏览器中自动变为 http 的？

之前做了 A 网站，也是用的 A 域名，后来重新做了一个主题放在了 B 网站上，也用了另一个域名 B 现在已经把 A 网站上的文章都搬进 B 里去了，所以想让之前访问 A 域 ... .cer; # 只是为了不让 nginx 报错 ssl_certificate_key /usr/local/nginx/conf/ssl/B.com/B.com.key; }...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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请教一个 MySQL 分区设计问题

先说业务场景，简化如下：统计用户使用哪些工具完成各项任务的情况（何时完成？成败？耗时？）我现在的设计如下： UserTask（用户任务表) 用户ID, 任务ID, 何时完成, 成败, 耗时前三列是主键，换句话说，一个用户不可能在 ... 么做或者对于我现在的目标 -- 统计用户使用哪些工具完成各项任务的情况，您有什么好的建议也可以提谢谢！...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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flutter如何修改bottomSheet的层叠顺序

我希望实现这样的布局，但是flutter的bottomsheet跟body不在一级...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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forms - Angular - use formControlName on object property

Here is what I have so far: UserModel.ts export class UserModel { id?: string = null; firstName = 'firstName'; lastName = ... , if I can, how do I add validators to user fields?...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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过滤器和拦截器拦截了不该拦截的路径

过滤器设置只拦截某些路径，在本地测试没问题，但是部署到服务器之后，却拦截了所有路径。我关闭过滤器，改成使用拦截器，居然也有这种问题，在本地测试只拦截部分路径，一到服务器上就拦截了所有路径，不知道啥原因...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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elementUI上传文件中途，离开当前页面，如何终止请求？

elementUI上传文件中途，离开当前页面，如何终止请求？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Asp.Net Core Deserialize Interface Type

I am working on an Asp.Net Core application where I have defined a service that is responsible for storing the ... for it. I am currently using the AspNet Boilerplate template....

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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浏览器什么场景下会发送 HEAD 请求？

今天在调试页面的时候发现。在弹出一个异步弹窗组件时会发送一个head请求。而代码里面并没有主动去发送HEAD请求的过程。什么场景下会触发这个请求呢？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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elasticsearch中如何递增计数器

es的每次更新都需要重新索引，递增计数器是在原值的基础上加1，如果上一次的递增操作还未完成索引，那么此时的递增岂不是错误的？ ctx._source.counter += 1...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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gitlab提示ssh错误

如题，我已经在gitlab中配置了ssh，ping gitlab.com也能ping通，可是push命令的时候一直提示ssh: connect to host gitlab.com port 22: Network is unreachable，求大佬解答。放截图： ssh配置： ping gitlab.com也能通：提示错误：...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Something about tkinter in Python

I just want to define a class using tkinter, but in the class, the button can not show on the root.This ... __name__=='__main__': Calculator1 = EasyCalculator() Calculator1.show()...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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