Record a spring boot experience

• springboot project creation

Here's a way to share it with other bloggers https://blog.csdn.net/mousede/article/details/81285693

• directory structure

• Next, write a startup class

Startup class: SpringBootDemoApplication

package com.start;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication(scanBasePackages = "com")
@MapperScan({"com.start.mangage.repository","com.start.mangage.service"})
public class SpringBootDemoApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringBootDemoApplication.class,args);
    }
}

Create a new configuration file named application.properties

#Server port number
server.port=8011

Here, I use maven to build projects, so the following dependencies need to be added to pom.xml. You don't need to put them in

 <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
        <scope>provided</scope>
    </dependency>
    <dependency>
           <groupId>org.apache.tomcat.embed</groupId>
           <artifactId>tomcat-embed-jasper</artifactId>
          <scope>1.2</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
  <build>
      <plugins>
      <!-- Resource file copy plug-in -->
         <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-resources-plugin</artifactId>
            <configuration>
                <encoding>UTF-8</encoding>
            </configuration>
        </plugin>
          <plugin>
              <groupId>org.springframework.boot</groupId>
              <artifactId>spring-boot-maven-plugin</artifactId>
          </plugin>
      </plugins>
</build>

A basic project is set up here. You can visit the default homepage by visiting http://localhost:8011 with a browser

The following is the most difficult part in my first construction process. Baidu took a lot of time to solve it

• How to access static resources

First, you need to create folders static (store js, css, etc.) and templates (store jsp, html, etc.) in the directory

Add dependency in pomxml

<!-- Accessing static resources -->
    <!-- <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-thymeleaf</artifactId>
    </dependency -->
<!-- jsp rely on -->
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <scope>provided</scope>
    </dependency>
        <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-jasper</artifactId>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-jsp-api</artifactId>
        </dependency>

<resources>
            <resource>
                <directory>src/main/java</directory>java Path to file
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.*</include>
                </includes>
<!--                <filtering>false</filtering> -->
            </resource>
            <resource>
                <directory>src/main/resources</directory>Path to resource file
                <includes>
                    <include>**/*.*</include>
                </includes>
            </resource>
        </resources>

At first, I used thmeleaf to rely on it, which made me unable to access my jsp format page. Later, I used jsp dependency instead, which made me a beginner. Alas!

Add in profile

#Configure the location and suffix of the jsp view
spring.mvc.static-path-pattern=/**
spring.mvc.view.prefix=/WEB-INF/jsp/
spring.mvc.view.suffix=.jsp
spring.resources.static-locations=classpath:/META-INF/resources/,classpath:/resources/,classpath:/static/,classpath:/public/

Then I built a controller class, tested the access page, and successfully accessed it.

Hard work can make up for weakness!