SpringBoot first Demo

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SpringBoot可以用application.properties来加载环境，但是在SpringBoot下有一个更方便的叫做application.yml文件来加载配置。。。

spring:
  profiles:
    active: prod
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://localhost:3306/test
    username: root
    password: root
  jpa:
    hibernate:
      ddl-auto: create //加载程序的时候将会重新在数据库中建立一张新的表
    show-sql: true

执行新表的语句是Hibernate: drop table if exists db_girl
Hibernate: create table db_girl (id integer not null auto_increment, age integer, cup_size varchar(255), primary key (id))

server:
  port: 8080
  context-path: /imooc
girl:
  cupSize: B
  age: 18
content: "cupSize:${cupSize} and age is ${age}"

程序通过配置取值的方法

    @Value("${cupSize}")
    private String cupSize;

    @Value("${content}")
    private String content;

package com.example.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;

/**
 * Created by chenqiuchang on 2017/3/11.
 */
@Controller
public class TemplateController {

    @GetMapping(value = {"/hiTemplate"})
    public String say(){
        return "index";
    }
}

如果该controller只是用来跳转页面，在SpringBoot中用template存放，需要导入相关jar包

<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-thymeleaf -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
            <version>1.5.1.RELEASE</version>
        </dependency>

在resources中templates下增加index.html的页面，当访问http://localhost:8081/imooc/hiTemplate 的时候将会跳转到index.html上