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Article directory Data back writing Default mode Through Model mode Book.java HelloController.java book.jsp springmvc.xml web.xml @ModelAttribute annotation implementation Modify parameter echo variable name Configure global variable names exception handling Exception handler errors.jsp Data back writing Data up ...

1. The relationship between spring container and spring MVC container Spring container is a parent container, and spring MVC container is a child container, which inherits from spring container. Therefore, in the spring MVC container, you can access the beans defined in the spring container, while in the spring container, you cannot access the ...

  Let's first go to / etc/hosts to add information vim /etc/hosts Add the following information: Pass apache-rocketmq.tar.gz to / usr/local/software through XFTP tool Then add / usr / local / Apache rocketmq directory, and extract Apache rocketmq.tar.gz to this directory [root@bogon apache-rocketmq]# mkdir /usr/local ...

demand 1. The number is 1 digit and the circle is displayed 2. The number is 2-digit drawing stretch, left and right semicircles 3. If the number is greater than 999, 999 will be displayed+ 4. Custom text color, custom background color Effect (well, it looks low) It's not complicated, but it's good as a calculation problem 1. Custom attri ...

In the development, the onclick event of the button is often used to do some operations. The android onclick event is usually used in five ways. This paper takes android Toast as an example First, we create a new project and add a button in the view activity main.xml file. The code is as follows:   <?xml version="1.0" enc ...

1. Intent can jump to another page and carry corresponding data or not. Here are several common methods of intent 2. Including using Intent to explicitly start another Activity and implicitly start another Activity ① to explicitly start another Activity with Intent, you need to configure the Activity to jump in AndroidManifes ...

In the previous article, we talked about the starting process of Tomcat in SpringBoot, and then we talked about how to add Servlet, Filter, Listener to Tomcat in SpringBoot Customize Servlet, Filter, Listener Declare ServletRegistrationBean, FilterRegistrationBean, ServletListenerRegistrationBean in Spring container @Bean public ServletRegistr ...

The previous article wrote the first way to implement microservice architecture, and now the second way is still a fool First blog link https://blog.csdn.net/qq_41684939/article/details/89602525 This is based on the last blog post The registration center can see in the previous article fegin implementation of microservice archit ...

preparation: 1) install jdk and configure environment variables. Please search for specific steps by yourself 2) install jmeter3.1 and above 3) jmeter installs the mqtt plug-in: Mqtt xmeter - [required version] - jar-with-dependencies.jar , put it in the EXT folder of JMeter installation directory (for example, F:\testPro\ap ...

1. Project introduction This project uses the program provided by Python + the use of selectors in the graph (quite easy to use) to realize crawling the picture of the girl graph (welfare graph). I have learned that the paw (2, 10) of a certain durian is right! 2. Knowledge points used ① Python Programming (I use version 3.7 ...