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560 views

1 answer

问题描述海康威视设备网络sdk预览获取的码流如何转换推送到rtmp 问题出现的环境背景及自己尝试过哪些方法海康的接口文档预览接口NET_DVR_RealPlay_V40中预览参数的播放窗口句柄（hPlayWnd）可以设置为空值，直接设置回调函 ... 待的结果是什么？实际看到的错误信息又是什么？通过海康sdk的预览回调，获取的码流，转换推送到rtmp...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

434 views

1 answer

ubuntu开发环境的可行性

一直在用WIN10x64开发，想换下开发环境，需要用到的东西有： java、Vue、Angular、IDEA、WebStorm、MySQL 更换为 ubuntu 上开发可行么，IDEA、WebStorm 有破解版么（原谅我，我也很想买正版的），还有 ubuntu 哪个版本上开发最好...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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647 views

1 answer

asammdf - how to combine two datasets to make one combined plot in python

I have a dataset of 6 parameters with 500 values each and I want to combine the two of the datasets to get the ... class 'numpy.float64'>'; only Series and DataFrame objs are valid...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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554 views

1 answer

Conditionally insert a piece of Django template with HTML code into my template using Javascript

I am trying to create a template with Django to use with all the pages I have in my project. All the pages ... and make it test for the Django variables in the template tags....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

650 views

1 answer

Bind data to checkbox in angular material table using formcontrol. Data is available as list of true,false values

HTML <ng-container matColumnDef="view"> <mat-header-cell *matHeaderCellDef mat-sort-header>View</mat-header-cell> < ... table(view column) according to values of view list....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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689 views

1 answer

mysql小白-添加复杂约束的语法

需求：往 student表中添加邮政编码postcode列要求：字符型，长度为6，可以为空，若不为空则要求postcode只能为数字，不能为其他字符...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

537 views

1 answer

.net - Creating multiple enterprise application registrations in a one tenant to same web application

Our .NET Core Web application is a multi-tenant application that defines specific roles in the application registration in ... set of roles are exposed for the second user group?...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

792 views

1 answer

javascript - Select all images without a specific parent class

I need to select the second image inside of a div (.entry-content) unless the image has a specific parent class. Here is an example of my ... /> <p></p> <p><img /></p> </div>...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

980 views

1 answer

javascript - How to save the current HTML file with JS

I write value in inputs and after clicking to a button it shows me in the table. But how I can save the current ... with JavaScript after adding new values to the table??? Pls help...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

848 views

1 answer

iconfont引入到uniapp中，部分图标变成了跟原本毫无关系的图标？

iconfont引入到uniapp中，部分图标变成了跟原本毫无关系的图标？尝试过使用 Unicode 方式引入，修改过图标的 class，问题依然存在相关代码 <uni-grid :column="3"> <uni-grid-item v-for="(btn ... 站是这个样子（期望的样子）：然而在项目里是这个样子：百思不得其解，求各路大神来显灵 ...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.1k views

1 answer

containers - delete Kubernetes persistent volume from statefulset after scale down

I scaled my statefulset up to 4, and when scaling down to 1, I saw that I still have 4 persistent volumes ... -8c5f-dff2843b693f 7Gi RWO Delete Bound default/data-3 default 4h3m...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.1k views

1 answer

java - how to handle exception properly if exception occurs while initializing Spring boot web service?

I am getting an exception while initializing spring boot application, because the port is already occupied, here the ... JarLauncher.java:51) Screenshot of the task manager process...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

1 answer

mysql如何插入一个数组？（nodejs + vue）

表结构是这样的：这两个字段存的是数组数据前端每次发请求前都要转为string // 数组=>string（前端代码） this.ruleForm.contact = JSON.stringify(this.ruleForm.contact); this.ruleForm ... 换如果不转换的话sql就会报错感觉这样来回转换好麻烦，有好的解决方法么？...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.1k views

1 answer

创建react项目抱的错误，完全没见过

创建一个react项目无法创建成功，一直抱这个错，有大神知道什么原因吗？图片详情 npm ERR! code 1 npm ERR! path /Users/caijizhou/ ... found in: npm ERR! /Users/caijizhou/.npm/_logs/2020-11-07T03_16_50_623Z-debug.log...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

1 answer

oracle - Transferring files from my Local windows pc to my Linux VM

SO i am new to tech, and as previous posts suggests i am working with OCI. Currently i run a linux 8 VM on OCI ... not sure where to start. Anybody with good advice please aid me!...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

1 answer

ChunkInTransaction filepath has been owned by transaction 20084

python api向dolphindb中保存数据出错 RuntimeError: <Server Exception> in run: ::append!(pt, t) => <ChunkInTransaction>filepath '/ ... transaction 20084 这是什么错误？怎么查看这个transaction 20084是什么？...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.0k views

1 answer

js页面跳转的思路

现在有个这样的需求：A页面通过一个a标签打开了B页面，现在想通过操作B页面让A页面实现跳转。请问有没有好的思路呢？...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.3k views

1 answer

el-time-picker默认时间23:00-06:00后时间选择错误

使用<el-time-picker is-range>组件，期望是显示的时间选择是23:00 - 06:00，但是最后出来的效果是在第一个时间选择框那里才能选择6点之前的选择，而且选择了之后就变成了05:00 - 23:00，我想问一下有办法解决吗？...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.5k views

1 answer

centos中管理golang项目

centos中有没有什么可以用来进行管理golang项目启动杀死的工具类似node中的pm2这种的...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.3k views

1 answer

javascript - My discord.js command doesn't return all the contents from a json file

Hi i'm making a command for my bot which lists all "orders" from a orders.json file the orders.json file has these "orders ... i want it to view all the orders any way to fix this?...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.4k views

1 answer

reactjs - How to pass data after the state is set successfully

I have a child component that is passing data to the parent but I have to click 3 times on the data in order for ... setSelectedValue = data =>{ this.setState({selection: data}); }...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.5k views

1 answer

docker - How to use JCommandCentre to display a JFR recoding on a remote server?

How do I use JCommandCentre for a JFR recording on a remote server. To be more clear I have a docker container ... to port-forward my docker port 7091 to my localhost 7091?...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.8k views

1 answer

javascript - Nodejs loopback TCP latency 1-2ms?

When creating a TCP server/client connected through the loopback address in NodeJS, I'm getting 1-2 ms round trip times for ... () => { console.log('Connection closed'); });...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.5k views

1 answer

如何判断动态插入的html解析完毕？

有一个场景：有一段动态html1要插入到页面中，等html1渲染完毕后再请求一段html2插入到html1的指定位置不要说用settimeout 因为html1长度是不固定的，也就是渲染的时间也是不固定的所以如何保证html2字段能正确渲染到页面上 ... 些方法相关代码粘贴代码文本（请勿用截图）你期待的结果是什么？实际看到的错误信息又是什么？...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.8k views

1 answer

spring boot - If we have setValidateAfterInactivity() defined, do we still need to use idle connection monitor thread?

In PoolingHttpClientConnectionManager, we have define setValidateAfterInactivity() defined, do we still need to use idle ... the real meaning of validate for this method....

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.8k views

1 answer

vue项目一打开网页就报这个错？

App running at: - Local: https://localhost:8080/ - Network: https://192.168.9.119:8080/ Note that the development build is ... be reused by tasks, press any key to close it. 如何解决？...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.6k views

1 answer

Making the game Checkers in python with pygame but are running into minor logical errors

The problem is when this valid moves function runs and goes through the 2 tuples it only ever appends ... board.print_board() board.draw_board(screen) board.draw_checkers(screen)...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.7k views

1 answer

typescript - Angular 10 Auxiliary Route not being found when routing to child

I've tried setting up my routes as follows: app-routing.module.ts: const platform: Route = { path: '', ... when the routing is complete. Any help would be greatly appreciated....

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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