public <HK, HV> HashOperations<K, HK, HV> opsForHash() { return new DefaultHashOperations(this); } A new DefaultHashOperations is generated every time I use opsForHash () if only one DefaultHashOperations is generated in a R...
interview questions are asked what makes concurrent requests? Isn t the request asynchronous? If there are too many requests, it will naturally occur concurrently. What does this mean? ...
springSTOMP always times out when trying to use Rabbitmq as a proxy link to mq. Rabbitmq has enabled the stomp plug-in, and 61613 is accessible ERROR: 17:42:46.147 [MessageBroker-3] DEBUG org.springframework.web.socket.sockjs.transport.handler.Defau...
I am using springboot2.1.2 to develop a project. I have a problem saving objects with repository. Here are my two entity classes: @Entity @Getter @Setter @NoArgsConstructor public class User { @Id private String email; private String userN...
as shown below the following packages show errors that cannot be imported. I don t understand why ...
for example, an interface interface A, when called by other classes, @Resource private IMessageHandler imessageHandler; use both Resource and Autowired to indicate that the bean cannot be found ...
Child pom.xml <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http: maven.apache.org POM 4.0.0" xmlns:xsi="http: www.w3.org 2001 XMLSchema-instance" xsi:schemaLocation="...
I am an Android engineer trying server deployment for my overseas applications, using springboot and vultr as deployment. Third-party login uses firebase, which requires spring to hold a secret key json, so which directory should be stored in order to be...
my front end has been developing with things related to Dcloud. Recently, a technical difficulty is related to Android background service. I want to turn APP into a rogue software. I would like to ask if you write the code of Android Source. How can I us...
for example, after the user uploads the profile photo, the image address is stored in the database. Is the address string here similar to WEB-INF image a.jpg? ...
when I use someone else s jekyll template to build a blog in github, it is not unrealistic to fort other people s template but open the picture after opening the web page. ...
1. Accidentally found that H2 can be done by h2-console, but is there anything more general? mysql and oracle can also directly modify the of the table structure in web....
Why don t PHP and Python need an application server like Tomcat like Java? ...
problem description this is a relatively simple topic that can be written. What I want to ask is whether these if-else can be optimized . related codes Please paste the code text below (do not replace the code with pictures) public static voi...
Will be used by others? And how do I verify login on each page? Is it okay to rely on cookie alone? Or do you have to work with the server to further verify that session is also available? how do you write real development? ...
topic description Why does the foreground pass in one parameter in SpringMVC, but controller accepts two parameters? doesn t understand this all the time. I hope you can help me. background: @PostMapping(" uploadFace") public JSONRe...
previous software developers used to do all kinds of plug-ins by hand. works as long as the source code is there. basically every project now uses package management tools to manage plug-ins. what will happen to the software world if one day these war...
I feel as if the threads started by tomcat take up more resources and are directly related to throughput, so now using nio mode to return Tomcat threads as soon as possible to provide concurrency, is that what I understand? ...
recently, I looked at my eyes, but I couldn t get an expert account, so I wanted to write a script to hang it. Hospital registration can only be booked on the official Wechat page, so how to write the registration script for this official page? is there...
, thread, thread.getName() Thread-0Thread-0 main thread.interrupted() main, thread thread.interrupted? , main ...
I am not familiar with just using thinkphp, when you generate a module using commands such as php think crud test, you find that only the admin module is generated and is only available in the background. Can you directly generate the corresponding mo...
this use cannot be triggered, and every time you can call mounted, the data of this function cannot be cached. Have you ever used nuxt? Give me some advice ...
RT A user belongs to a group, each group has multiple users, and each group has a group leader user (table) userid groupid . group (table) groupid ownerid . such a design from the ER diagram, each of the two tables has a 1-to-N connection to...
is there a better arttemplate+webpack+jquery best practice recommendation? because of the high requirements for deo in the project, we use this architecture and do not use vue and react single-page applications, but for jquery applications, the details p...
how to select all of element checkbox ...