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    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)
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    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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    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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    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)
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    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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    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)
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    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)
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    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)
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    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)
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    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)
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    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)
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    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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    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)
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    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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    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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    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)
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    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)
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    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)
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    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)
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    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)
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    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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    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)
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    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)
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    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)
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    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)
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    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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    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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    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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