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JPA 多表查询时，关联表没有数据，如何显示关联外键？

比如我有 APO 和 BPO 两个实体类，一对一关联，APO 中 B_ID 在 BPO 中没有记录，所以 APO.BPO 为 null，但我想要在 APO 中把 B_ID 显示出来，要怎么做呢？...

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

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580 views

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wordpress - How do I allow Netlify continuous integration to get past Wordfence firewall?

When trying to deploy my static website using Netlify I recieved this error message: If you are using a security ... anyone know how to stop Wordfence from from blocking Netlify?...

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

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performance - Android Viewpager Fragment Network Call handling

Inside a viewpager fragment is having a network call to load the data. Due to this network call ... ="parent" /> </androidx.constraintlayout.widget.ConstraintLayout>...

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

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585 views

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java - Gradle refresh snapshot dependencies does not work

The Stackoverflow contains some questions regarding this issue but unfortunately, nothing works for me. For example, I read this ... in the nexus repository. Gradle version: 6.6.1...

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

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638 views

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react-router 状态管理

场景：我想实现的是这样的一个结构用的是antd，下图是代码：我了解一下： 1 react-router 不能跟vue-router 一样封装一个公共router的文件吗？ 2 渲染的方式只能用Switch进行判断吗？不能拆分组件吗？只能写在当前的 ... 转？官方文档我已经看了但是好像视图渲染的方式都是这样的没有什么特别的想知道大家是怎么做的...

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

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numpy - how to counting white pixels in every rectangle in over image?

I have thousands of images 1000X2000 px and I want count only white pixels in each small windows of image 100X200 and write ... how can I do that by python openCV? Sample Image:...

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

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umijs如何在build过程中在dist目录下写入自定义的文件

如题再如图，dist目录下是build出来的标准文件。现在想要把cust-files目录下的两个文件也一同写入到dist目录下，不是写进umi.js文件中去。该如何配置呢？...

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

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js 求助该怎么删除这种类型的对象数组

这是返回的数据res.rows，现在我需要根据判断删除modulesG里的其中一个数组（对象），用name做判断，假设res.rows[i].modulesG[i].name == 'test'的话，就删除这个modulesG[i]， ... == 'test')?{ res.rows[i].modulesG[j].splice(j, 1); } } }...

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

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190 views

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jquery :visible筛选

请问下jquery不能够多级筛选吗？ <ul> <li> <select></select> </li> </ul> 比如我想筛选ul下可见的select标签，但是我只控制了ul的显示隐藏用$('ul:visible ... ('ul select:visible')都取的不对只能用$('ul:visible').find('select')来获取吗？...

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

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Math.max() 方法还能这么写啊？

红框中的Math.max.apply(Math,arr); 那个max()是一个方法啊，max()方法括号是放参数的，这Math.max.apply()是怎么把参数传到max()方法里面的啊? 难道 fn.fn1(); fn的参数就是fn1的返回值吗？相当于 fn(fn1());?...

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

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react native avoid scrollview/flatlist shrinking while keyboard is open

In my react native app, I have a header with a search option and a body with content which is a flatlist and a ... the footer while the keyboard is active. how I can achieve that?...

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

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494 views

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scala - How should I use ScalaMeter for my project?

I've read ScalaMeter docs and I don't understand how can I use it for benchmarking my project and not some atom ... but here should be some implementation of benchmarking } } }...

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

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576 views

1 answer

VUE如何同时监听上下两个布局的点击事情？

有一个页面，分上下两个布局，我希望在监听上下两个布局的点击时间，只要上面或者下面有点击事情，就相应，所以在全局的div中加了一个@click="addGoodsHandler()"事件，但是为什么这个 ... div> </div> methods: { addGoodsHandler () { console.log('处理全局点击事件123') } }...

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

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426 views

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css print打印pdf时，如何控制最后一页的样式？

需求：打印pdf时候默认加上左右边框，css代码如下 @media print { .contract { border: 2px solid #333; border-bottom: none; border-top: none; } } 问题：最后一页pdf不 ... 充说明：这是chrome浏览器默认的打印功能有没有什么办法能把边框显示全？谢谢！...

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

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471 views

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c - Check exit code of an unrelated process

I want to check the exit code of a foreground process using C code running on linux. As I understand, ... this command returned immediately, while the process was still running....

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

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447 views

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Vue为啥在方法中添加对象某个属性时不能修改

如下代码 <div id="app"> <input type="text" v-model="people.name"> <p>{{people.name}}</p> <p>{{people.age}}</p> <p>{{people}}</ ... = 213修改，就会触发页面people属性和vue-devtools的对象属性的添加请问这是什么原因...

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

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419 views

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Set Role Color for Discord.js bot

I am trying to make my bot's role a pink color for the current server using the Client.on("ready") However ... advance thank you to anybody who replies and helps with my message....

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

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junit 5 - Unable to run multiple discoveries at a time

My team developed a custom runner for junit tests. Now I'm working to improve it's performance and trying to create few ... be cool to hear from you or someone from junit team :)...

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

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es6 模块按需导入 tree-shaking

我在项目的plugins目录下构建了一些插件目录 a b c ... 例如 plugins/a/index.js export default a plugins/index.js export { default as a } from '@plugins/ ... c 请问在 webpack 中如何将 b c shake掉或者有没有其他做法呢？谢谢 ...

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

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121 views

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javascript - Display data streamed from a Flask view as it updates

I have a view that generates data and streams it in real time. I can't figure out how to send this data to a ... flask.Response(inner(), mimetype='text/html') app.run(debug=True)...

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

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javascript - Fill array with random picture from url that gives random picutres

The randomizer for width and height works, but it only gets first random photo from collection and generates 10 same ... the array with 10 different pictures using that same link....

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

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542 views

1 answer

网页自动化有什么平台或工具吗

使用jquery进行网页自动化操作，非阻塞效果，类似 auto.js。油猴插件写出来，界面dom阻塞了。请问怎么处理啊谢谢...

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

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343 views

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git blame，如何基于某个 commit id 进行？

比如我想知道 7cd1590560e2232adbff91ff18c0e97bb85062e0 这个 commit id 时，xxx.go 文件的 git blame 结果，该怎么做？注意不是直接 git blame xxx.go，而是要站在某次提交上看...

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

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85 views

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javascript - How does the "this" keyword work?

I have noticed that there doesn't appear to be a clear explanation of what the this keyword is and how it is correctly ... occurred. How does this work and when should it be used?...

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

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python - Pandas column formatting

I have a pandas column with strings in the form of: '0.47±0.1'. What would be the best way of summing the entire column with an overall uncertainty? Thanks!...

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

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118 views

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.localhost后的域名

.localhost后缀的域名有什么作用，比如域名：www.xxx.localhost...

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

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1.0k views

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在android studio里面正确的打开weex工程？

https://github.com/apache/inc... 根据官方指导git submodule update --init --remote之后引入了子工程这样在incubator-weex/android和incubator- ... 通过，但是不是源码引入的sdk 尝试修改setting和implementFromWeex=true也不行 ...

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

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lodash项目是如何构建的

lodash怎么实现模块化的...

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

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