springboot入门

SpringBoot

编码配置部署监控 -> 简单

SpringBoot和SpringMVC的关系

SpringMVC->SpringBoot

SpringBoot的特点

1.化简为简，简化配置
2.备受关注，是下一代框架

微服务->SpringCloud->SpringBoot

前置知识
利用maven构建项目 ->《项目管理利器》
Spring注解。 -> 《Spring入门篇》
RESTful API

课程学到
第一个SpringBoot程序
自定义属性配置
Controller的使用
spring-data-jpa
事务管理

第一个SpringBoot应用

New Project -> Spring Initializr -> next -> Artifact:girl Group:com.binperson -> next -> Web web

<setting>
    <mirrors>
        <mirror>
            <id>nexus-aliyun</id>
            <mirrorOf>*</mirrorOf>
            <name>Nexus aliyun</name>
            <url>http://maven.aliyun.com/nexus/content/goups/public</url>
        <mirror>
    </mirrors>
</setting>

<artifactId>spring-boot-starter-web</artifactId>作为web项目必须引入的依赖
<artifactId>spring-boot-starter-test</artifactId>单元测试

启动

方法一

GirlApplication run

http://localhost:8080/hello

package com.binperson;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

/**
 * Created by binperson on 2017/5/14.
 */
@RestController
public class HelloController {

    @RequestMapping(value = "/hello", method = RequestMethod.GET)
    public String say() {
        return "hello Spring Boot!";
    }
}

方法二

cd gril
mvn spring-boot:run

方法三

mvn install
cd target
ll
java -jar girl-0.0.1-SNAPSHOT.jar

属性配置

spring.datasource.url:jdbc:mysql://127.0.0.1:3306/
spring.datasoucce.username:root
spring.datasource.password:
spring.datasource.driver-class-name: com.mysql.jdbc

delete static templates

resources -> application.properties

server.port=8081
server.content-path=/girl


application.yml
server:
    port: 8081
    context-path: /girl
    
http://localhost:8081/girl/hello

server:
    port: 8080
cupSize: A
age: 18
content: "supSize: ${cupSize}, age: ${age}"

package com.binperson;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

/**
 * Created by binperson on 2017/5/14.
 */
@RestController
public class HelloController {
    @Value("${cupSize}")
    private String cupSize;

    @Value("${age}")
    private Integer age;

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

    @RequestMapping(value = "/hello", method = RequestMethod.GET)
    public String say() {
        return cupSize + age + content;
    }

}

server:
  port: 8080
girl:
  cupSize: B
  age: 18
  
新建一个类GirlProperties
package com.binperson;

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

/**
 * Created by binperson on 2017/5/14.
 */
@Component
@ConfigurationProperties(prefix = "girl")
public class GirlProperties {
    private String cupSize;
    private Integer age;

    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;
    }
}

package com.binperson;

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.RestController;

/**
 * Created by binperson on 2017/5/14.
 */
@RestController
public class HelloController {
    @Autowired
    private GirlProperties girlProperties;

    @RequestMapping(value = "/hello", method = RequestMethod.GET)
    public String say() {
        return girlProperties.getCupSize();
    }

}

application-dev.yml
server:
  port: 8080
girl:
  cupSize: B
  age: 18
application-prod.yml
server:
  port: 8080
girl:
  cupSize: F
  age: 18
application.yml
spring:
  profiles:
    active: dev

Controller的使用

@Controller 处理http请求
@RestController Spring4之后新加的注解，原来返回json需要@ResponseBody配合@Controller
@RequestMapping 配置url映射

package com.binperson;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;


/**
 * Created by binperson on 2017/5/14.
 */
@Controller
public class HelloController {
    @Autowired
    private GirlProperties girlProperties;

    @RequestMapping(value = "/hello", method = RequestMethod.GET)
    public String say() {
        return girlProperties.getCupSize();
    }

}

resources -> templates -> index.html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <h1>hello sb</h1>
</body>
</html>

package com.binperson;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

/**
 * Created by binperson on 2017/5/14.
 */
@Controller
public class HelloController {
    @Autowired
    private GirlProperties girlProperties;

    @RequestMapping(value = "/hello", method = RequestMethod.GET)
    public String say() {
        return "index";
    }

}

package com.binperson;

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.RestController;

/**
 * Created by binperson on 2017/5/14.
 */
@RequestMapping("/bin")
@RestController
public class HelloController {
    @Autowired
    private GirlProperties girlProperties;

    @RequestMapping(value = {"/hello", "/hi"}, method = RequestMethod.POST)
    public String say() {
        return girlProperties.getCupSize();
    }

}

@PathVariable 获取url中的数据
@RequestParam 获取请求参数的值
@GetMapping 组合注解

http://localhost:8080/bin/say/13

package com.binperson;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

/**
 * Created by binperson on 2017/5/14.
 */
@RequestMapping("/bin")
@RestController
public class HelloController {
    @Autowired
    private GirlProperties girlProperties;

    @RequestMapping(value = {"/say/{id}"}, method = RequestMethod.GET)
    public String say(@PathVariable("id") Integer id) {
        return "id:" + id;
        //return girlProperties.getCupSize();
    }

}

http://localhost:8080/bin/say/11?id=111

package com.binperson;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

/**
 * Created by binperson on 2017/5/14.
 */
@RequestMapping("/bin")
@RestController
public class HelloController {
    @Autowired
    private GirlProperties girlProperties;

    @RequestMapping(value = {"/say/{id}"}, method = RequestMethod.GET)
    public String say(@RequestParam("id") Integer myid) {
        return "id:" + myid;
        //return girlProperties.getCupSize();
    }

}


http://localhost:8080/bin/say/11?id=

package com.binperson;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

/**
 * Created by binperson on 2017/5/14.
 */
@RequestMapping("/bin")
@RestController
public class HelloController {
    @Autowired
    private GirlProperties girlProperties;

    @RequestMapping(value = {"/say/{id}"}, method = RequestMethod.GET)
    public String say(@RequestParam(value = "id", required = false, defaultValue = "0") Integer myid) {
        return "id:" + myid;
        //return girlProperties.getCupSize();
    }

}

package com.binperson;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

/**
 * Created by binperson on 2017/5/14.
 */
@RequestMapping("/bin")
@RestController
public class HelloController {
    @Autowired
    private GirlProperties girlProperties;

    //@RequestMapping(value = {"/say/{id}"}, method = RequestMethod.GET)
    @GetMapping(value = "/say")
    public String say(@RequestParam(value = "id", required = false, defaultValue = "0") Integer myid) {
        return "id:" + myid;
        //return girlProperties.getCupSize();
    }

}

数据库操作

Spring-Data-Jpa

JPA(Java Persistence API)定义了一系列对象持久化的标准，目前实现这一规划的产品有Hibernate、TopLink等。

RESTful API设计

请求类型请求路径功能
GET /girls 获取女生列表
POST /girls 创建一个女生
GET ／girl/id 通过id查询一个女生
PUT ／girl/id 通过id更新一个女生
DELETE /girls/id 通过id删除一个女生

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

<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
</dependency>

application.yml

spring:
  profiles:
    active: dev
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://127.0.0.1:3306/dbgirl
    username: root
    password:
  jpa:
    hibernate:
      ddl-auto: create
    show-sql: true
    
    
package com.binperson;


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

/**
 * Created by binperson on 2017/5/14.
 */
@Entity
public class Girl {
    @Id
    @GeneratedValue
    private Integer id;
    private String cupSize;
    private Integer age;

    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;
    }

    public Girl() {

    }
}


ddl-auto: update

数据库

package com.binperson;

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

import java.util.List;

/**
 * Created by binperson on 2017/5/16.
 */
public interface GirlRepository extends JpaRepository<Girl, Integer> {
    //通过年龄查询
    public List<Girl> findByAge(Integer age);
}

事务管理

查询的时候不需要事务

package com.binperson;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

/**
 * Created by binperson on 2017/5/16.
 */
@Service
public class GirlService {
    @Autowired
    private GirlRepository girlRepository;

    @Transactional
    public void insertTwo() {
        Girl girlA = new Girl();
        girlA.setCupSize("A");
        girlA.setAge(18);
        girlRepository.save(girlA);

        Girl girlB = new Girl();
        girlB.setCupSize("A");
        girlB.setAge(19);
        girlRepository.save(girlB);
    }
}


package com.binperson;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;

/**
 * Created by binperson on 2017/5/16.
 */
@RestController
public class GirlController {

    @Autowired
    private GirlRepository girlRepository;

    @Autowired
    GirlService girlService;

    @GetMapping(value = "/girls")
    public List<Girl> girlList() {
        return girlRepository.findAll();
    }

    @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);
    }

    @GetMapping(value = "/girls/{id}")
    public Girl girlFindOne(@RequestParam("id") Integer id) {

        return girlRepository.findOne(id);
    }

    @PutMapping(value = "/girls/{id}")
    public Girl girlUpdate(@RequestParam("id") Integer id,
                           @RequestParam("age") Integer age,
                           @RequestParam("cupSize") String cupSize){
        Girl girl = new Girl();
        girl.setId(id);
        girl.setCupSize(cupSize);
        girl.setAge(age);
        return girlRepository.save(girl);
    }
    @DeleteMapping(value = "/girls/{id}")
    public void girlDelete(@RequestParam("id") Integer id){
        girlRepository.delete(id);
    }

    @GetMapping(value = "/girls/age/{age}")
    public List<Girl> girlListByAge(@PathVariable("age") Integer age){
        return girlRepository.findByAge(age);
    }

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

最后编辑于：2017.12.07 06:54:15

人面猴
序言：七十年代末，一起剥皮案震惊了整个滨河市，随后出现的几起案子，更是在滨河造成了极大的恐慌，老刑警刘岩，带你破解...
沈念sama阅读 214,837评论 6赞 496
死咒
序言：滨河连续发生了三起死亡事件，死亡现场离奇诡异，居然都是意外死亡，警方通过查阅死者的电脑和手机，发现死者居然都...
沈念sama阅读 91,551评论 3赞 389
救了他两次的神仙让他今天三更去死
文/潘晓璐我一进店门，熙熙楼的掌柜王于贵愁眉苦脸地迎上来，“玉大人，你说我怎么就摊上这事。” “怎么了？”我有些...
开封第一讲书人阅读 160,417评论 0赞 350
道士缉凶录：失踪的卖姜人
文/不坏的土叔我叫张陵，是天一观的道长。经常有香客问我，道长，这世上最难降的妖魔是什么？我笑而不...
开封第一讲书人阅读 57,448评论 1赞 288
港岛之恋（遗憾婚礼）
正文为了忘掉前任，我火速办了婚礼，结果婚礼上，老公的妹妹穿的比我还像新娘。我一直安慰自己，他们只是感情好，可当我...
茶点故事阅读 66,524评论 6赞 386
恶毒庶女顶嫁案：这布局不是一般人想出来的
文/花漫我一把揭开白布。她就那样静静地躺着，像睡着了一般。火红的嫁衣衬着肌肤如雪。梳的纹丝不乱的头发上，一...
开封第一讲书人阅读 50,554评论 1赞 293
城市分裂传说
那天，我揣着相机与录音，去河边找鬼。笑死，一个胖子当着我的面吹牛，可吹牛的内容都是我干的。我是一名探鬼主播，决...
沈念sama阅读 39,569评论 3赞 414
双鸳鸯连环套：你想象不到人心有多黑
文/苍兰香墨我猛地睁开眼，长吁一口气：“原来是场噩梦啊……” “哼！你这毒妇竟也来了？” 一声冷哼从身侧响起，我...
开封第一讲书人阅读 38,316评论 0赞 270
万荣杀人案实录
序言：老挝万荣一对情侣失踪，失踪者是张志新（化名）和其女友刘颖，没想到半个月后，有当地人在树林里发现了一具尸体，经...
沈念sama阅读 44,766评论 1赞 307
护林员之死
正文独居荒郊野岭守林人离奇死亡，尸身上长有42处带血的脓包…… 初始之章·张勋以下内容为张勋视角年9月15日...
茶点故事阅读 37,077评论 2赞 330
白月光启示录
正文我和宋清朗相恋三年，在试婚纱的时候发现自己被绿了。大学时的朋友给我发了我未婚夫和他白月光在一起吃饭的照片。...
茶点故事阅读 39,240评论 1赞 343
活死人
序言：一个原本活蹦乱跳的男人离奇死亡，死状恐怖，灵堂内的尸体忽然破棺而出，到底是诈尸还是另有隐情，我是刑警宁泽，带...
沈念sama阅读 34,912评论 5赞 338
日本核电站爆炸内幕
正文年R本政府宣布，位于F岛的核电站，受9级特大地震影响，放射性物质发生泄漏。R本人自食恶果不足惜，却给世界环境...
茶点故事阅读 40,560评论 3赞 322
男人毒药：我在死后第九天来索命
文/蒙蒙一、第九天我趴在偏房一处隐蔽的房顶上张望。院中可真热闹，春花似锦、人声如沸。这庄子的主人今日做“春日...
开封第一讲书人阅读 31,176评论 0赞 21
一桩弑父案，背后竟有这般阴谋
文/苍兰香墨我抬头看了看天上的太阳。三九已至，却和暖如春，着一层夹袄步出监牢的瞬间，已是汗流浃背。一阵脚步声响...
开封第一讲书人阅读 32,425评论 1赞 268
情欲美人皮
我被黑心中介骗来泰国打工，没想到刚下飞机就差点儿被人妖公主榨干…… 1. 我叫王不留，地道东北人。一个月前我还...
沈念sama阅读 47,114评论 2赞 366
代替公主和亲
正文我出身青楼，却偏偏与公主长得像，于是被迫代替她去往敌国和亲。传闻我的和亲对象是个残疾皇子，可洞房花烛夜当晚...
茶点故事阅读 44,114评论 2赞 352