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Sometimes, in this case, we have the value of one of the enumeration fields, and then get the information of enumeration or other fields through this value. If there is no tool class, we need to add corresponding methods to each enumeration. Through the method of tool class, we can reduce the code generation and make it more concise and bea ...

Spring IOC and Factory Mode PS: The content of this article is hard core, which requires a better understanding of java's object-oriented, reflection, class loader, generics, properties, XML and other basic knowledge. (1) Brief introduction Before talking about Spring IOC, it's necessary to talk about Factory Pattern.Factory mode separates the ...

Popular understanding of spring source code (5) -- parsing and registering bean definitions Last section talked about how to get document. After converting the document to document, the next extraction and registration bean is our play. protected int doLoadBeanDefinitions(InputSource inputSource, Resource resource) throws Bea ...

Preface I've always wanted to write this article, but I've been reviewing it for the sake of exams. I've delayed writing until now. I wrote a small project with node's express framework, which has the function of uploading pictures. Here's how to realize it (I use ejs) thinking First of all, when the user clicks upload avatar to upd ...

When we use https to make network requests, we will receive the certificates from the server. These certificates are divided into agency certificates and certificates issued by ourselves. In ios, if we are going to request an organization certified to send an https request, we don't need to process it. But if it is a self signed certificate, we ...

Response object Function: set response message Set response line Format: HTTP/1.1 200 ok Set status code: setStatus (int sc) Set response header: setHeader (String name, String value) Set response body Use steps Get output stream Character output: PrintWrite getWriter() Byte output stream: ServletOutputStream getoutputstream() Output ...

In the project, you may encounter the need to modify the button at the bottom right corner of the soft keyboard. Although you have written it several times, you still feel relieved to concentrate on taking notes here. Effect : Note (key points): Xml medium 1. Confirm the function display keyboard in the lower rig ...

About character encoding and how to deal with unicode in the program, I want to write an article to summarize and study, but I find that what has been discussed by predecessors is very perfect, no longer repeated, you can refer to: http://www.regexlab.com/zh/encoding.htm. In C + +, characters can be divided into char and wchar. Corresponding ...

Due to the requirements on the project, you need to export the Excel file with the specified conditions. After a rummage, it finally came true. Now post the code and share it (directly share the code of some auxiliary classes in our project)   Our project uses Asp.Net MVC4.0 mode. Each ActionResult must return a View or Json, etc. (the paramete ...

A few days ago, I went to the property management office to pay the property fee. The property management staff said that the community introduced high-tech products. After using the bank card for consumption, I didn't need to sign on the UnionPay machine with a pen. I directly touched with my finger to sign the consumption. At that time, I tho ...