springboot+thymeleaf简单demo

springboot的简单搭建使用总结

1）环境介绍

JDK：1.8（1.8以上才支持，1.7部分支持）

框架：springboot（2.1.2.RELEASE） +  thymeleaf

1.1）IDEA搭建方式

1.2）在官方搭建项目方式：spring

1.3）项目结构：

1.4）pom.xml配置（自动生成的部分依赖没有）

<?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>2.1.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo</name>
    <description></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-tomcat</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>net.sourceforge.nekohtml</groupId>
            <artifactId>nekohtml</artifactId>
            <version>1.9.22</version>
        </dependency>
    </dependencies>

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

</project>

1.5）修改application.yml配置

spring:
  thymeleaf:
    cache: false #开发时关闭缓存,不然没法看到实时页面
    mode: LEGACYHTML5 # 用非严格的 HTML
    encoding: UTF-8
    servlet:
      content-type: text/html

另外：如果想配置日志，可以加上这两句

logging:
  file: ../logs/spring-boot-hello.log #名字和路径可以自行修改
  level.org.springframework.web: DEBUG #日志级别

注意：Spring Boot 对各种日志框架都做了支持，我们可以通过配置来修改默认的日志的配置，默认情况下，Spring Boot 使用 Logback 作为日志框架。

1.6）建立简单的类

实体类：（代码自行调整）

package com.example.demo.entity;

import java.io.Serializable;

public class User implements Serializable {

    private String name;
    private Integer age;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }
}

controller层：

package com.example.demo.controller;

import com.example.demo.entity.User;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

import java.util.ArrayList;
import java.util.List;

//@RestController用这个没法访问到index页面
@Controller
@RequestMapping(value = "thymeleaf")
public class HelloController {

    @RequestMapping(value = "index", method = RequestMethod.GET)
    public String index(Model model) {
        User person = new User();
        person.setName("张三");
        person.setAge(22);

        List<User> list = new ArrayList<>();
        User p1 = new User();
        p1.setName("李四");
        p1.setAge(23);
        list.add(p1);

        User p2 = new User();
        p2.setName("王五");
        p2.setAge(24);
        list.add(p2);

        User p3 = new User();
        p3.setName("赵六");
        p3.setAge(25);
        list.add(p3);

        model.addAttribute("person", person);
        model.addAttribute("list", list);
        return "index";
    }

}

页面：（放在templates目录下，文件名：index.html）

<!DOCTYPE html SYSTEM "http://www.thymeleaf.org/dtd/xhtml1-strict-thymeleaf-spring4-4.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Hello Thymeleaf</title>
</head>
<body>
<div>
    <span>访问 Model：</span><span th:text="${person.name}"></span>
</div>
<div>
    <span>访问列表</span>
    <table>
        <thead>
        <tr>
            <th>姓名</th>
            <th>年龄</th>
        </tr>
        </thead>
        <tbody>
        <tr th:each="human : ${list}">
            <td th:text="${human.name}"></td>
            <td th:text="${human.age}"></td>
        </tr>
        </tbody>
    </table>
</div>
</body>
</html>

 

1.7）启动访问效果