<?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>

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;
}

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IDInteger 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();}}

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 {@Autowiredprivate StudentRepository studentRepository;@GetMappingpublic Collection<Student> findAll() {return studentRepository.findAll();}@PostMappingpublic 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;}}