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.mysql.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