Recent questions in Technique[技术]

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c# - Converting between MongoDB.Bson versions

I have an application writing BsonDocuments created by MongoDB C# driver (v1.10.xxx) as byte array to RabbitMQ. Then I have ... MongoDB.Bson, Version=1.10.0.62, Culture=neutral,......

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

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如何通过配置请求头解决跨域？

本地vue项目localhost访问http://abc.com下的api，产生跨域在服务端配置Access-Control-Allow-Origin：*后，因为要携带cookie，浏览器提示不能配置成* 所以我就将我本地localhost的地址配置到Access- ... 下这个的意思大致是非简单请求预检请求没通过，这个要怎么解决哦？有大佬指点下吗...

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

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前端本地开发环境视频能播放，上线环境上视频播放不了

本地环境获取的后台传入的是对的，视频可以播放。线上所获取的数据就报错了...

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

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phpstudy的mysql登不进去报2002怎么办

...

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

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150 views

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javascript - Styling html object with append

Is it possible to style a html object with append ? <div id="mini-canvas-grid" class="row"></div> const ... div>') I'm getting [object HTMLCanvasElement] Name in the browser...

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

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javascript - React JS - CORS Missing Allow Header when sending POST request

I have some problems with sending a POST request to my REST-API. The problem is, when I send it from a react application, ... ; response.json().then( responseJSON => { }); });...

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

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230 views

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关于windows下py --version与python --version的问题

在Windows下，为什么使用python --version显示的版本是2.7的，而使用py --version则显示3.8...

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

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有没有在微拍堂工作过的小伙伴呢

请问有没有在微拍堂工作过的小伙伴呢，工作是否天天加班，管理严格，一不小心就被开除的那种呢...

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

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如何在B类中使用A类的数组，试过了返回值

需求：在其他类中对数组进行：循环打印输出数组名称（字符串）在A类中创建数组，代码如下： public int[] exampleList() { int exampleList1 = 0; int exampleList2 = 1; ... e.printStackTrace(); } } } } 参考链接：java 中一个类怎么调用另一个类的数组元素...

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

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ts 定义一个num：number 但是 num默认值不想写数字怎么破

ts 定义一个num：number 但是 num默认值不想写数字并且if判断的时候偶默认值还是false 怎么破写null和undefined都报错...

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

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1.1k views

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byte buddy - Invoking a standalone method from bytebuddy based java agent

Lets say there is a method public int getSize() { return 3; } No other method calls this method in the java code. I ... a annotation and call them. what are the ways to do this?...

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

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682 views

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How to use escape characters in Ansible shell/grep command

I need to extract a hostname from a URL in a file on my remote host to then use that value in another task. ... doesn't return anything. How can I escape this correctly please?...

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

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c# - All indexes of string-array return null

I've been coding in C# (winforms) for a project for 2 weeks now. My goal is to build a GUI for an FFT- ... embeded systems, so sorry for not seeing the problem instantly. Thanks....

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

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494 views

1 answer

电脑重装系统，但是忘记备份hexo的blog本地库，现在我该如何恢复继续使用这个blog。

电脑重装系统，但是忘记备份hexo的blog本地库，GitHub有备份，但备份里无config等文件。现在我该如何恢复继续使用这个blog。以下为备份的内容...

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

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1 answer

做一个php socket 向 websocket 传送数据的简单程序，想了解核心，在帧处理这里我搞不懂，麻烦解释一下

有三个疑问： 1.连接成功后，我想服务器发送消息，为什么只有第一次服务器会返回信息 2.第一次向服务器发送信息，服务器会返回信息，但是返回的信息是125个字符的，并不是一次返回全部，如图 3 ... } function log(html){ $('history').value += '->'+html+' ' ; } </script> </body>...

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

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293 views

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在Android-databinding的xml文件中，绑定表达式如何引用其他控件的内容？

举个例子，一个登陆界面，有两个输入框和一个按钮： <EditText id="@+id/etName" /> <EditText id="@+id/etPwd" /> <Button id="@+id/btnLogin" /> ... }"/> login函数是需要两个参数的，我这里应该如何获取两个EditText的内容（etName和etPwd）呢？...

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

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366 views

1 answer

vue为什么不可以直接用webp格式的图片呢？

请问VUE怎么直接使用webp格式的图片呢，是要安装组件呢还是要自己写方法。...

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

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有人知道一个Java后端技术/框架，用于提供自定义字段接口

之前无意中看过一个Java后端技术/框架，是在接口中根据前端自定义需要的字段返回内容就是可以前端调用的时候要用什么字段/结构，就放到请求参数中就可以自动返回了举个不恰当的例子：后端一个接口：获取当前用户信息 ... 实现也不复杂，主要是想再找到了解一下这种技术/框架，印象中是 JAVA 的，不知道有没有记错，或者有其他语言的 ...

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

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node.js - Infinite Scroll in NodeJS and Mongoose App

I have built an app using NodeJS, Express, and Mongoose. I have used EJS as the template engine. My MongoDB ... Node. Any help would be greatly appreciated. Thanks in advance....

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

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432 views

1 answer

js怎么根据月份把两个数组对象整合为一个新的数组对象？

各位大佬，怎么才能把这两个数组整合为下面这种数组的形式？ var data = [ {name:'离职'，label:'quit'},{name:'在职'，label:'on'} ]; var rows = [ { ... : 1,March: 3}, {name: '在职',January: 10,February: 11,March: 9} ];...

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

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385 views

1 answer

linux命令，windows命令如何查询 cpu的制作工艺这个cpu硬件信息？

就是我现在需要获取服务器对应的cpu制作工艺这一项参数，也就是获取自己的cpu是几纳米的，不能使用cpu-z这样的工具，就是使用系统的命令，不知道是否可以获取这个参数？...

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

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1 answer

plot - Sympy won't plot3d a function containing Max?

I am having issues 3d plotting a trivial function f(x,y) = max(x,y). Here is the expected result from wolframalpha: ... a sympy bug/limitation, how hard would it be to remove it?...

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

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390 views

1 answer

生成大数据分析报告pdf文件的思路是什么？

我尝试用纯前端生成但是odf只能生成网页展示的内容，有没有一种不用展示直接点击按钮然后生成全面的分析报告，内容包括图表和文字，是不是需要预制模板，然后在模板中塞数据然后在后端生成返回前端下载？...

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

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553 views

1 answer

sockets - How to find a free local port using Swift?

For a local server I need to specify a port, which must not be in use. There's a really neat solution in Python ... to specify one in getaddrinfo. What's the correct way here?...

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

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260 views

1 answer

ios app cookie怎么保存？

一个网站嵌套在app里面的。登陆页面是 html代码开发的记住密码没效果。只要app强退。。再进入密码账号就还是要重新输入现在是怎么把document.cookie 不管退出app。再次进来也保存cookie的信息...

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

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251 views

1 answer

webservice调用问题

最近在调用webservice接口的时候发生了一个问题： Server returned HTTP response code: 500 for URL，参数编码啥的都试过，但是这问题还是没有解决，HttpURLConnection方式调用的,post方式，有大佬知道怎么解决吗？万分感谢...

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

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223 views

1 answer

EJB 算微服务？

EJB 算微服务？...

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

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483 views

1 answer

求一算法，一个自然数M，怎样分成N份，每份是10的倍数。

function randomSplit(m,n,minv,maxv){ var res=[]; while(n>0){ l = Math.max(minv,m-(n-1)*maxv); r = Math.min(maxv,m-(n-1)*minv); num ... minv是，每份最小值， maxv是，每份最大值有大神吗？帮我看看吧，实在搞不定了 ...

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

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