工具Eclipse 2018

Maven 配置

ThymeLeaf 安装：  https://blog.csdn.net/xingqibaing/article/details/82787164

spring项目创建：https://www.cnblogs.com/LUA123/p/8110285.html

https://www.jb51.net/article/144068.htm

https://blog.csdn.net/wangjiankai1993/article/details/80272886

controller、Service层讲解 https://www.jianshu.com/p/06376b97b11e

1、选择项目类型

           

2、设置项目

      

3、项目结构

4、创建HelloController

package com.example.demo;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class HelloController {
@RequestMapping("/")
public String hello() {
    return "Welcome to start SpringBoot!";
  }
}

5、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="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-parent</artifactId>
  <version>2.1.4.RELEASE</version>
  <relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>spring-boot2</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>spring-boot2</name>
<description>Demo project for Spring Boot</description>

<properties>
<java.version>1.8</java.version>
</properties>

<dependencies>
  <dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-web</artifactId>
  </dependency>

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
    <scope>test</scope>
  </dependency>
</dependencies>

<build>
<plugins>
  <plugin>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-maven-plugin</artifactId>
  </plugin>
</plugins>
</build>

</project>

6、启动

         

运行结果

7、添加MyBatis、Thymeleaf依赖

Thymeleaf 安装：  https://blog.csdn.net/xingqibaing/article/details/82787164

Thymeleaf入门使用： https://blog.csdn.net/love_everybody/article/details/79870035

<dependency>
  <groupId>org.mybatis.spring.boot</groupId>
  <artifactId>mybatis-spring-boot-starter</artifactId>
</dependency>
<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>

注意：运行报  Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.

由于依赖了mybatis-spring-boot-starter，此时还未配置数据源，在运行时需先配置数据源。