Spring Boot Introductory Web chapter (II)

Spring Boot Introductory Web chapter (II)

Original address: Spring Boot Introductory Web chapter (II)
Blog address: http://www.extlight.com First, preface

The foundation of Spring Boot Primer (i) introduces the basics of Spring Boot's environment and project start-up, and this article continues to delve into spring boot's knowledge of Web development. second, integrated template engine

Since JSPs are not recommended for use by Springboot, the template engine mainly introduces Freemarker and Thymeleaf. 2.1 Integrated Freemarker 2.1.1 Adding freemarker dependencies

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId> Spring-boot-starter-freemarker</artifactid>
</dependency>

2.1.2 Add freemarker template configuration

In Application.properties, add the following:

Spring.freemarker.allow-request-override=false
spring.freemarker.cache=true
Spring.freemarker.check-template-location=true
Spring.freemarker.charset=utf-8
spring.freemarker.content-type=text/html
Spring.freemarker.expose-request-attributes=false
Spring.freemarker.expose-session-attributes=false
Spring.freemarker.expose-spring-macro-helpers=false
spring.freemarker.prefix=
SPRING.FREEMARKER.SUFFIX=.FTL

The above configurations are the default values. 2.1.3 Freemarker Case Demo

Create the Freemarkercontroller in the controller package:

@Controller
@RequestMapping ("Freemarker") public
class Freemarkercontroller {

    @RequestMapping ("Hello" Public
    String Hello (map<string,object> Map) {
        
        map.put ("msg", "Hello Freemarker");
        return "Hello";
    }
}

Create a file named Hello.ftl in the Templates directory with the following contents:

<! DOCTYPE html>
 
The results are as follows:

2.2 Integrated Thymeleaf 2.2.1 Adding Thymeleaf dependencies

In the Pom.xml file, add:

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId> Spring-boot-starter-thymeleaf</artifactid>
</dependency>
 
2.2.2 Add Thymeleaf template configuration 
In Application.properties, add the following:

Spring.thymeleaf.cache=true
spring.thymeleaf.prefix=classpath:/templates/
spring.thymeleaf.suffix=. HTML
spring.thymeleaf.mode=html5
spring.thymeleaf.encoding=utf-8
spring.thymeleaf.content-type= Text/html
 
The above configurations are the default values. 2.2.3 Thymeleaf Case Demo

Create the Thymeleafcontroller in the controller package:

@Controller
@RequestMapping ("thymeleaf") public
class Thymeleafcontroller {

    @RequestMapping ("Hello") Public
    String Hello (map<string,object> Map) {
        map.put ("msg", "Hello Thymeleaf");
        return "Hello";
    }
}
 
Under the template directory, create a file named Hello.html, which reads as follows:

<! DOCTYPE html>