博客系统实战——SprintBoot 集成Thymeleaf 实现用户增删查改（含源码）

近来在学习SprintBoot +Thymeleaf +Maven搭建自己的博客系统，故在学习过程中在此记录一下，也希望能给广大正在学习SprintBoot和Thymeleaf的朋友们一个参考。

以下是目录结构：

效果：

1、创建一个Springboot 工程，具体步骤这个网上例子一大把，选择WEB，thymeleaf框架就行了，以下是pom.xml的内容

1. <?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>
   
       <groupId>com.spring.blog</groupId>
   
       <artifactId>myblog</artifactId>
   
       <version>0.0.1-SNAPSHOT</version>
   
       <packaging>jar</packaging>
   
       <name>myblog</name>
   
       <description>myblog project for Spring Boot</description>
   
       <parent>
   
           <groupId>org.springframework.boot</groupId>
   
           <artifactId>spring-boot-starter-parent</artifactId>
   
           <version>2.0.3.RELEASE</version>
   
           <relativePath/> <!-- lookup parent from repository -->
   
       </parent>
   
       <properties>
   
           <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   
           <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
   
           <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-thymeleaf</artifactId>
   
           </dependency>
   
       </dependencies>
   
       <build>
   
           <plugins>
   
               <plugin>
   
                   <groupId>org.springframework.boot</groupId>
   
                   <artifactId>spring-boot-maven-plugin</artifactId>
   
               </plugin>
   
           </plugins>
   
       </build>
   
   </project>

2、创建用户类（避免太长省去了get set方法，可下载完整项目）

package com.spring.boot.blog.blog.domain;

/**

 * Created by 龙烨 on 2018/7/16.

 */

public class User {

    private Long id; // 用户的唯一标识

    private String name;

    private String email;

    public User(){//无参数

    }

    public User(Long id,String name,String email){

        this.id=id;

        this.name=name;

        this.email=email;

    }

}

3、创建接口及实现方法，应为这里没有连接数据库，故使用内存

package com.spring.boot.blog.blog.repository;

import com.spring.boot.blog.blog.domain.User;

import org.springframework.stereotype.Service;

import java.util.ArrayList;

import java.util.List;

import java.util.concurrent.ConcurrentHashMap;

import java.util.concurrent.ConcurrentMap;

import java.util.concurrent.atomic.AtomicLong;

/**

 * Created by 龙烨 on 2018/7/16.

 */

@Service

public class UserRepositoryImpl implements UserRepository {

    private static AtomicLong counter=new AtomicLong();

    private final ConcurrentMap<Long,User> userMap=new ConcurrentHashMap<>();

    @Override

    public User saveOrUpateUser(User user) {

        Long id=user.getId();

        if(id==null){//新建

            id=counter.incrementAndGet();

            user.setId(id);

        }

        this.userMap.put(id,user);

        return user;

    }

    @Override

    public void deleteUser(Long id) {

        this.userMap.remove(id);

    }

    @Override

    public User getUserById(Long id) {

        return this.userMap.get(id);

    }

    @Override

    public List<User> listUser() {

        return new ArrayList<User>(this.userMap.values());

    }

}

　　

4 、创建控制类（避免太长，部分内容，下载源码可查看完整）

@RestController

@RequestMapping("/users")

public class UserController {

    @Autowired

    private UserRepository userRepository;

    /**

     * 查询所以用户

     * @param model

     * @return

     */

    @GetMapping

    public ModelAndView list(Model model){

        model.addAttribute("userList",userRepository.listUser());

        model.addAttribute("title","用户管理");

        return new ModelAndView("users/list","userModel",model);

    }

    /**

     * 查询单个用户

     * @param model

     * @return

     */

    @GetMapping("{id}")

    public ModelAndView view(@PathVariable("id") Long id, Model model){

        User user=userRepository.getUserById(id);

        model.addAttribute("user",user);

        model.addAttribute("title","查看用户");

        return new ModelAndView("users/view","userModel",model);

    }

    /**

     * 创建表达页面

     * @param model

     * @return

     */

    @GetMapping("/form")

    public ModelAndView createForm( Model model){

        model.addAttribute("user",new User());

        model.addAttribute("title","创建用户");

        return new ModelAndView("users/form","userModel",model);

    }

    @PostMapping

    public ModelAndView saveOrUpdateUser(User user){

        user=userRepository.saveOrUpateUser(user);

        return new ModelAndView("redirect:/users");

    }

5、resources 下创建文件：

application.properties 增加以下内容：

# THYMELEAF

spring.thymeleaf.encoding=UTF-8

# 热部署静态文件

spring.thymeleaf.cache=false

# 使用HTML5标准

spring.thymeleaf.mode=LEGACYHTML5

spring.thymeleaf.prefix=classpath:/templates/

　　

源码下载：源码