SpringBOOT入门

为什么学习springboot

SpringBOOT的与spring相比配置简单，更加清爽，构建快速，支持热部署，不过到现在为止还是有些坑的，不过不影响学习。

编辑器

编辑器使用的IDEA，IDEA自带的SpringBoot支持可以快速构建SpringBOOT项目

构建工具

构建工具使用maven

maven配置

pom.xml

<?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>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>

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

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.2.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-connecter-java</artifactId>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
</dependency>

</dependencies>

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

</project>

配置

application.yml

server:
port: 8080
context-path: /demo
spring:
profiles:
active: dev
datasource:
driver-class-name: org.gjt.mm.m
4000
ysql.Driver
url: jdbc:mysql://127.0.0.1:3306/spring_boot
username: root
password: 123456789
jpa:
hibernate:
ddl-auto: update
show-sql: true

项目结构

dao

package com.example.dao;

import org.springframework.boot.autoconfigure.orm.jpa.JpaProperties;
import com.example.model.Person;
import org.springframework.data.jpa.repository.JpaRepository;

/**
* Created by Coder on 2017/3/26.
*/
public interface PersonDao extends JpaRepository<Person, Integer> {

}

service

package com.example.service;

import com.example.model.Person;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;

import javax.transaction.Transactional;
import java.util.List;

/**
* Created by Coder on 2017/3/26.
*/
@Service
public interface PersonService {

public List<Person> getAllPerson();

public void save(Person person);
}

model

package com.example.model;

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

/**
* Created by Coder on 2017/3/26.
*/
@Entity
public class Person {

@Id
@GeneratedValue
private Integer id;

private String name;

private String nickName;

public Person(){

}

@Override
public String toString() {
return "Person{" +
"id=" + id +
", name='" + name + '\'' +
", nickName='" + nickName + '\'' +
'}';
}

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 String getNickName() {
return nickName;
}

public void setNickName(String nickName) {
this.nickName = nickName;
}
}

controller

package com.example.controller;

import com.example.dao.PersonDao;
import com.example.model.Person;
import com.example.service.PersonService;
import com.example.serviceImpl.PersonServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import javax.transaction.Transactional;
import java.util.List;

/**
* Created by Coder on 2017/3/26.
*/
@RestController
public class PersonController {
@Autowired
private PersonService personService;

@RequestMapping(value = "/person", method = RequestMethod.GET)
public List<Person> getpersons(){
return personService.getAllPerson();
}

@Transactional
@RequestMapping(value = "/person/add", method = RequestMethod.GET)
public void addPerson(){
Person person1 =  new Person();
person1.setName("liu1");
person1.setNickName("2");

Person person2 =  new Person();
person2.setName("liu1");
person2.setNickName("213");

personService.save(person1);
personService.save(person2);
}

}

serviceImpl

package com.example.serviceImpl;

import com.example.dao.PersonDao;
import com.example.model.Person;
import com.example.service.PersonService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import javax.transaction.Transactional;
import java.util.List;

/**
* Created by Coder on 2017/3/26.
*/
@Component
public class PersonServiceImpl implements PersonService{
@Autowired
private PersonDao personDao;

@Override
public List<Person> getAllPerson() {
return personDao.findAll();
}

@Override
public void save(Person person) {
personDao.save(person);
}
}

启动

运行项目根目录下的Application即可