RESTful学习笔记（二）---简单网页前后端springboot项目搭建

新建项目：

项目结构

Pom.xml中添加依赖：

要有用于启动的父进程，有启动依赖，有lombok用于自动构建getter和setter方法等

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.4.5</version>
    </parent>
 <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
 <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
</dependencies>

代码：

User类中

package com.example.demo.demos.web;

import lombok.AllArgsConstructor;
import lombok.Getter;
import lombok.NoArgsConstructor;
import lombok.Setter;


@Getter
@Setter
@AllArgsConstructor
@NoArgsConstructor
public class User {


    private Long id;

    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;
    }
    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }
}

controller类中

package com.example.demo.Controller;

import com.example.demo.demos.web.User;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.Arrays;
import java.util.List;

import static jdk.nashorn.internal.runtime.PropertyDescriptor.GET;

@Controller
/**
 * 员工对外接口（请求路径规定）声明类
 * 员工控制层
 */
public class EmployeeController { 
 @RequestMapping(value= "/employees",method = RequestMethod.GET)
    @ResponseBody
    public List<User> list(){
        List<User> list= Arrays.asList(new User(1L,"小七",18),new User(2l,"圆心",19));
        return list;
    }
}

启动springboot项目，默认端口号8080

 @RequestMapping(value= "/employees",method = RequestMethod.GET)

路径/employees(符号restful风格对于资源名称采用复数形式)，GET请求代表获取所有的员工，响应码200响应成功，content-type为Json代表返回的数据是json格式的 

请求路径：http://localhost:8080/employees

如下图即前后端连接成功