SpringBoot23 分模块开发

1 开发环境说明

　　JDK：1.8

　　MAVEN：3.5

　　IDEA：2017.2.5

　　SpringBoot：2.0.3.RELEASE

2 创建SpringBoot项目

　　2.1 项目信息

　　2.2 添加项目依赖

　　2.3 修改pom文件

　　　　添加lombok依赖、修改devtools、修改plugin

<?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>cn.xiangxu</groupId>
    <artifactId>module-demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>module-demo</name>
    <description>Demo 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-devtools</artifactId>
            <optional>true</optional>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.0</version>
            <scope>provided</scope>
        </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>
                <configuration>
                    <fork>true</fork>
                </configuration>
            </plugin>
        </plugins>
    </build>


</project>

View Code

3 逻辑功能实现

　　实现简单的增删改查，利用map来模拟内存数据库

　　3.1 包结构

　　3.2 model层

package cn.xiangxu.moduledemo.model;

import lombok.Data;

/**
 * @author 王杨帅
 * @create 2018-07-26 22:16
 * @desc 学生实体类
 **/
@Data
public class Student {
    private Integer id;
    private String name;
}

View Code

　　3.3 repository层

package cn.xiangxu.moduledemo.repository;

import cn.xiangxu.moduledemo.model.Student;
import org.springframework.stereotype.Repository;

import java.util.Collection;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.atomic.AtomicInteger;

/**
 * @author 王杨帅
 * @create 2018-07-26 22:17
 * @desc 学生持久层
 **/
@Repository
public class StudentRepository {

    /**
     * 利用Map模拟内存数据库
     */
    private final ConcurrentMap<Integer, Student> repository =new ConcurrentHashMap<>();

    /**
     * 主键发生器
     */
    private final static AtomicInteger idGenerator = new AtomicInteger();

    /**
     * 新增
     * @param student
     * @return
     */
    public Student save(Student student) {
        // 产生ID
        Integer id = idGenerator.incrementAndGet();
        student.setId(id);
        student.setName(student.getName() + id);
        repository.put(id, student);
        return student;
    }

    /**
     * 获取列表
     * @return
     */
    public Collection<Student> findAll() {
        return repository.values();
    }



}

View Code

　　3.4 web层

package cn.xiangxu.moduledemo.controller;

import cn.xiangxu.moduledemo.model.Student;
import cn.xiangxu.moduledemo.repository.StudentRepository;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.Collection;

/**
 * @author 王杨帅
 * @create 2018-07-26 22:23
 * @desc 学生控制层
 **/
@RestController
@RequestMapping(value = "/student")
@Slf4j
public class StudentController {

    @Autowired
    private StudentRepository studentRepository;

    @GetMapping
    public Collection<Student> findAll() {
        return studentRepository.findAll();
    }

    @PostMapping
    public Student save(@RequestBody Student student) {
        return studentRepository.save(student);
    }

    @GetMapping(value = "/connect")
    public String connect() {
        String result = "前后端连接成功";
        log.info(result);
        return result;
    }

}