1.创建好新项目后,配置pom文件,添加好必要的依赖
<properties>
<project.build.sourseEncoding>UTF-8</project.build.sourseEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
2.编写实体类Book
package com.springboot.quickstart.entity;
public class Book {
private Integer id;
private String name;
private Double price;
public Book(Integer id, String name, Double price) {
this.id = id;
this.name = name;
this.price = price;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Double getPrice() {
return price;
}
public void setPrice(Double price) {
this.price = price;
}
public Book() {
super();
}
@Override
public String toString() {
return "Book{" +
"id=" + id +
", name='" + name + '\'' +
", price=" + price +
'}';
}
}
3.写接口BookDAO
package com.springboot.quickstart.dao;
import com.springboot.quickstart.entity.Book;
import org.springframework.stereotype.Component;
import java.util.ArrayList;
import java.util.List;
/*
* 图书的DAO类
* */
@Component
public class BookDAO {
public List<Book> getBooks(){
List<Book> books=new ArrayList<>();
books.add(new Book(1,"Spring Boot实战",88.8));
books.add(new Book(1,"Spring MVC",98.8));
books.add(new Book(1,"JAVA从入门到精通",68.8));
return books;
}
}
4.编写BookController类
package com.springboot.quickstart.controller;
import com.springboot.quickstart.dao.BookDAO;
import com.springboot.quickstart.entity.Book;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import javax.annotation.Resource;
import java.util.List;
@RestController
public class BookController {
// 注入一个bookDao实例
@Resource
private BookDAO bookDao;
@RequestMapping(value = "/books",method = RequestMethod.GET)
public List<Book> getBooks(){
return bookDao.getBooks();
}
}
5.运行springboot启动主类
image
6.用postman测试
image
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