Spring boot 学习笔记

Posted 2020-10-09 work hard work smart

 

1.spring boot 特点

 

2. 创建工程

 

最后的文件结构如下图

 

3. Gril.java

package girl;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;

/**
 * Created by Think on 2017/10/3.
 */
@Entity
public class Girl
{
    @Id
    @GeneratedValue
    private Integer id;

    private String cupSize;

    private Integer age;

    public Girl(){}

    public Integer getId() {
        return id;
    }

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

    public String getCupSize() {
        return cupSize;
    }

    public void setCupSize(String cupSize) {
        this.cupSize = cupSize;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }
}

　　

4. ComApplication

package girl;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class ComApplication {

	public static void main(String[] args) {
		SpringApplication.run(ComApplication.class, args);
	}
}

　　

5. 创建接口

package girl;

import org.springframework.data.jpa.repository.JpaRepository;

/**
 * Created by Think on 2017/10/3.
 */
public interface GirlRepository extends JpaRepository<Girl, Integer>{
}

　　

5. GirlProperties.java

 

package girl;

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

/**
 * Created by Think on 2017/10/3.
 */
@Component
@ConfigurationProperties(prefix = "girl")
public class GirlProperties {
    private String cupSize;

    public String getCupSize() {
        return cupSize;
    }

    public void setCupSize(String cupSize) {
        this.cupSize = cupSize;
    }

    private Integer age;

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }
}

　　

6. 配置文件

使用的数据库为mysql

application.yml

spring:
  profiles:
    active: prod
  datasource:
      driver-class-name: com.mysql.jdbc.Driver
      url: jdbc:mysql://127.0.0.1:3306/dbgirl
      username: root
      password: 123456
  jpa:
    hibernate:
      ddl-auto: update
    show-sql: true

　　

application-dev.yml

server:
  port: 8080
girl:
  cupSize: B
  age: 18

　　

application-prod.yml

server:
  port: 8082
girl:
  cupSize: F
  age: 18

　　

7. Controller文件

package girl;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

/**
 * Created by Think on 2017/10/3.
 */
@RestController
public class GirlController {

    @Autowired
    private GirlRepository girlRepository;

    @Autowired
    private GirlService girlService;

    /**
     * 查詢所以女生列表
     * @return
     */
    @GetMapping(value = "/girls")
    public List<Girl> girlList(){
        return  girlRepository.findAll();
    }

    /**
     * 添加一個女生
     * @param cupSize
     * @param age
     * @return
     */
    @PostMapping(value = "/girls")
    public Girl girlAdd(@RequestParam("cupSize") String cupSize,
                          @RequestParam("age") Integer age){
        Girl girl = new Girl();
        girl.setCupSize(cupSize);
        girl.setAge(age);
       return girlRepository.save(girl);

    }

    @PostMapping(value = "/girls/two")
    public void  girlTwo(){
        girlService.insertTow();
    }
}

　　 

8. pom配置

<?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>girl</groupId>
	<artifactId>com</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>

	<name>com</name>
	<description>Demo project for Spring Boot</description>

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>1.5.7.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-test</artifactId>
			<scope>test</scope>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-data-jpa</artifactId>
		</dependency>
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
		</dependency>
	</dependencies>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>


</project>