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This article mainly introduces "how to build springboot framework". In daily operation, I believe many people have doubts about how to build springboot framework. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubts about "how to build springboot framework". Next, please follow the editor to study!

First, configure Maven1. Download Maven

Apache-maven-3.6.1.zip

two。 Configure the local warehouse

Configure local warehouse apache-maven-3.6.1 > > conf > > settings.xml

3. Configuration of image repository

Since apache's remote repositories are abroad, the download speed of JAR packages is slow, so one or two image repositories can be configured (domestic).

Then click User Settings under Maven

two。 Create a project

File > > New > > Spring Start Project

Finsh

3. Version conflict problem

At this point, the pom.xml file of the project will report an error

Solution: add the version number of the maven.jar plug-in to the properties of the pom.xml file

3.1.1

4. Engineering catalogue

Yml and yaml files are the same, and finally ApplyClose.

6. Test whether the construction is successful or not

Find src/main/java > > com.hsiao > > MyspringbootApplication.java > > right click > > Run as > > Spring Boot App

Open Google browser > > address bar and enter localhost:8080

This interface represents the success of building!

III. Basic configuration information

Mainly the configuration of yml file (Note: properties asking price and yml file exist at the same time, properties file will be loaded)

1. Modify server port # overwrite service port (SpringBoot default embedded Web container) server: address: localhost port: 12342.JSP page storage directory

Create a new JSP storage page folder webapp under src/main

Create a new WEB-INF folder under the webapp folder

JSP interface storage path: / src/main/webapp/WEB-INF or / src/main/webapp/

3.pom.xml configuration JSP parsing Technology org.apache.tomcat.embed tomcat-embed-jasper provided 4.pom.xml configuration jsp tag Library javax.servlet jstl Compile5. Custom storage directory for static resources

Static resources load path public or static by default. If you need to customize the folder, you need to configure it in the configuration file.

Spring: mvc: static-path-pattern: / * * / * # static resource mapping path resources: static-locations:-classpath:/myresources # actual classpath 6. Hot deployment tool (devtools)

1.pom.xml file configuration jar package

Org.springframework.boot spring-boot-devtools true provided

two。 Configure in application.yml

Spring: # Engineering hot deployment configuration devtools: restart: enabled: true # Hot deployment does not load path exclude: src/main/resources/static # additional-exclude: exclude path # Hot deployment load path additional-paths:-src/main/java-src/main/webapp-src/main/resources/myresources7. Log record

Log level: off (off) > fatal (critical error) > error (error) > warn (warning) > info (information) > debug (debugging) > trace (very low log level) > all (open)

Slf4j is equivalent to a public interface, not the interface type log4j < logback < log4j2 in JAVA.

1.logback

Springboot uses logback by default

Private static Logger log=LoggerFactory.getLogger (current class name. Class); Note: all imported packages are under org.slf4j

Set which package and which level of log information to print in the application.yml configuration file

# configuration of logging logging: level: com: debug

Save the printed log information in a file and configure it in the application.yml configuration file

# configuration of logging logging: # path: # specify the storage path. By default, file: mylog.log # specify the file name file.max-size: 10MB # log file size level: com: debug2.spring boot integrated log4j under the project directory

First, remove the default logback from pom.xml and add log4j

Org.springframework.boot spring-boot-starter-log4j2 org.springframework.boot spring-boot-starter Org.springframework.boot spring-boot-starter-logging

Then add the configuration file of log4j under the root directory of resoures, and finally add the configuration of log in application.yml.

# logging: config: classpath:log4j2-spring.xml # plus custom log file configuration information # Note the default log configuration note 8. Customize the path to the configuration file

Suppose you put the application.yml or properties file under the custapplication folder

1.properties file

SpringApplication springApplication = new SpringApplication (MyspringbootApplication.class); / / application load configuration file Properties defaultProperties = new Properties (); try {defaultProperties.load (MyspringbootApplication.class. GetResourceAsStream ("/ custapplication/application.properties");} catch (IOException e) {/ / TODO Auto-generated catch block e.printStackTrace ();} springApplication.setDefaultProperties (defaultProperties); springApplication.run (args)

2.yml file

9. Change advertising banners

A website that generates art characters: https://www.bootschool.net/ascii

Copy the font to the banner.txt document, and then copy the document to the resource root directory

Close the advertising banner and add the following to application.perproties:

Spring.main.banner-mode= off IV, right out of the box

Create a new testController.java under src/main/java

Package com.hsiao;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;@RestControllerpublic class testController {@ RequestMapping ("/ hello") public String hello () {return "Hello word";}}

Open the browser address bar and enter http://localhost:8081/hello; the interface shows that Hello word represents success

At this point, the study on "how to build a springboot framework" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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