1...SpringBoot 简单介绍：
设计目的：是用来简化新的spring应用的初始搭建以及开发过程。该框架使用了特定的方式来进行配置，从而使开发人员不在需要定义模板化的配置。
特点：1 可以创建独立的spring应用程序，并且基于maven 或 gradle 插件，可以创建可执行的jars和wars。 2 内嵌tomcat或jetty 等servlet容器。
3 提供自动配置的 starter 项目对象模型 （poms）以简化maven配置。 4 尽可能自动配置spring容器。 5 提供准备好的特性，如：指标健康检查和外部化配置。 6 绝对没有代码的生成，不 需要xml的配置。
说明： 前端常使用模板引擎，主要有FreeMarker和Thymeleaf，它们都是用Java语言编写的，渲染模板并输出相应文本，使得界面的设计与应用的逻辑分离，同时前端开发还会使用到Bootstrap、 AngularJS、JQuery等；在浏览器的数据传输格式上采用Json，非xml，同时提供RESTfulAPI；SpringMVC框架用于数据到达服务器后处理请求；到数据访问层主要有Hibernate、MyBatis、JPA等持 久层框架；数据库常用mysql；开发工具推荐IntelliJIDEA.
2....简单入门程序：
1...pom.xml
1 <?xml version="1.0" encoding="UTF-8"?> 2 <project xmlns="http://maven.apache.org/POM/4.0.0" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 5 <modelVersion>4.0.0</modelVersion> 6 7 <groupId>com.wsc</groupId> 8 <artifactId>springBoot01</artifactId> 9 <version>1.0-SNAPSHOT</version> 10 <!--继承SpringBoot父类 spring-boot-starter-parent--> 11 <parent> 12 <groupId>org.springframework.boot</groupId> 13 <artifactId>spring-boot-starter-parent</artifactId> 14 <version>2.0.2.RELEASE</version> 15 </parent> 16 17 <properties> 18 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 19 <maven.compiler.source>1.8</maven.compiler.source> 20 <maven.compiler.target>1.8</maven.compiler.target> 21 </properties> 22 <dependencies> 23 <dependency> 24 <groupId>org.springframework.boot</groupId> 25 <artifactId>spring-boot-starter-web</artifactId> 26 </dependency> 27 <!--添加起步依赖--> 28 <dependency> 29 <groupId>mysql</groupId> 30 <artifactId>mysql-connector-java</artifactId> 31 </dependency> 32 <dependency> 33 <groupId>org.springframework.boot</groupId> 34 <artifactId>spring-boot-starter-freemarker</artifactId> 35 </dependency> 36 <dependency> 37 <groupId>org.springframework.boot</groupId> 38 <artifactId>spring-boot-starter-data-jpa</artifactId> 39 </dependency> 40 </dependencies> 41 </project>pom.xml
2......./resouces/application.properties（数据源 文件 不可变）
1 #DB Configuration: 2 spring.datasource.driverClassName=com.mysql.jdbc.Driver 3 spring.datasource.password=wsc 4 spring.datasource.username=root 5 spring.datasource.url=jdbc:mysql://127.0.0.1:3306/test?CharacterEncoding=utf-8 6 7 #JPA Configuration: 8 #spring.jpa.database=MySQL 9 #spring.jpa.show-sql=true 10 #spring.jpa.generate-ddl=true数据库信息
3.......resouces/tempplates/flight.ftl ( *.ftl 后缀 不可改变)
1 <html>
2 <head>
3 <title>spring boot</title>
4 </head>
5 <body>
6 <table border="1">
7 <thead>
8 <tr>
9 <th>航班ID</th>
10 <th>航班编号</th>
11 <th>起飞城市</th>
12 <th>起飞时间</th>
13 <th>到达城市</th>
14 <th>到达时间</th>
15 </tr>
16 </thead>
17 <tbody>
18 <!--循环
19 list
20 -->
21 <#list flightList as flight>
22 <tr>
23 <td>${flight.id}</td>
24 <td>${flight.flightNo}</td>
25 <td>${flight.departureCity}</td>
26 <td>${flight.departureTime}</td>
27 <td>${flight.arrivalCity}</td>
28 <td>${flight.arrivalTime}</td>
29 </tr>
30 </#list>
31 </tbody>
32 </table>
33 <#--图片访问地址格式-->
34 <img src="/images/wsc.jpg">
35 </body>
36 </html>
页面
4...resouces/static/images js css
5......entity
1 package com.wsc.core.entity;
2
3 import javax.persistence.*;
4 import java.util.Date;
5
6 /**
7 * @version 1.0
8 * @ClassName Flight
9 * @Description TODO
10 * @Author WSC
11 * @Date 2019/8/22 14:35
12 **/
13 @Entity //实体构造
14 @Table(name="flight") //表名
15 public class Flight {
16 @Id
17 @GeneratedValue(strategy = GenerationType.IDENTITY) //自增设置
18 /**
19 * @Column 注解（表的字段） 必须加上 ，不然 test 会报错
20 * 报错信息 ： 数据库表 不存在 某个字段
21 * com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'test.ac_flight' doesn't exist
22 */
23 @Column(name="flight_id")
24 private Integer id;
25 @Column(name="flight_no")
26 private String flightNo;
27 @Column(name="departure_city")
28 private String departureCity;
29 @Column(name="departure_time")
30 private Date departureTime;
31 @Column(name="arrival_time")
32 private Date arrivalTime;
33 @Column(name="arrival_city")
34 private String arrivalCity;
35
36 public Integer getId() {
37 return id;
38 }
39
40 public void setId(Integer id) {
41 this.id = id;
42 }
43
44 public String getFlightNo() {
45 return flightNo;
46 }
47
48 public void setFlightNo(String flightNo) {
49 this.flightNo = flightNo;
50 }
51
52 public String getDepartureCity() {
53 return departureCity;
54 }
55
56 public void setDepartureCity(String departureCity) {
57 this.departureCity = departureCity;
58 }
59
60 public Date getDepartureTime() {
61 return departureTime;
62 }
63
64 public void setDepartureTime(Date departureTime) {
65 this.departureTime = departureTime;
66 }
67
68 public Date getArrivalTime() {
69 return arrivalTime;
70 }
71
72 public void setArrivalTime(Date arrivalTime) {
73 this.arrivalTime = arrivalTime;
74 }
75
76 public String getArrivalCity() {
77 return arrivalCity;
78 }
79
80 public void setArrivalCity(String arrivalCity) {
81 this.arrivalCity = arrivalCity;
82 }
83
84 @Override
85 public String toString() {
86 return "Flight{" +
87 "id=" + id +
88 ", flightNo='" + flightNo + '\'' +
89 ", departureCity='" + departureCity + '\'' +
90 ", departureTime=" + departureTime +
91 ", arrivalTime=" + arrivalTime +
92 ", arrivalCity='" + arrivalCity + '\'' +
93 '}';
94 }
95 }
View Code
6.....dao
1 package com.wsc.core.dao;
2
3 import com.wsc.core.entity.Flight;
4 import org.springframework.data.jpa.repository.JpaRepository;
5 // 继承JpaRepository
6 public interface FlightDao extends JpaRepository<Flight,Integer> {
7 }
View Code
7.....controlle
1 package com.wsc.core.controller;
2
3 import com.wsc.core.dao.FlightDao;
4 import com.wsc.core.entity.Flight;
5 import org.springframework.beans.factory.annotation.Autowired;
6 import org.springframework.stereotype.Controller;
7 import org.springframework.ui.Model;
8 import org.springframework.web.bind.annotation.RequestMapping;
9
10 import java.util.List;
11
12 /**
13 * @version 1.0
14 * @ClassName ShowController
15 * @Description TODO
16 * @Author WSC
17 * @Date 2019/8/22 16:24
18 **/
19 @Controller
20 public class ShowController {
21 @Autowired
22 private FlightDao flightDao;
23 @RequestMapping("/flight/data") //访问地址
24 //返回页面数据
25 public String showData(Model model){
26 List<Flight> flightList = flightDao.findAll();
27 model.addAttribute("flightList", flightList);
28 return "flight";
29 }
30 }
显示页面controller
1 package com.wsc.core.controller;
2
3 import com.wsc.core.dao.FlightDao;
4 import com.wsc.core.entity.Flight;
5 import org.springframework.beans.factory.annotation.Autowired;
6 import org.springframework.web.bind.annotation.RequestMapping;
7 import org.springframework.web.bind.annotation.RestController;
8
9 import java.util.List;
10
11 /**
12 * @version 1.0
13 * @ClassName FlightController
14 * @Description TODO
15 * @Author WSC
16 * @Date 2019/8/22 14:58
17 **/
18 @RestController //返回json数据 的格式
19 public class FlightController {
20 @Autowired
21 private FlightDao flightDao;
22 @RequestMapping("/flight/findAll") //访问地址
23 //全部数据 查询
24 public List<Flight> findAll(){
25 List<Flight> flightList = flightDao.findAll();
26 return flightList;
27 }
28 }
返回json
8....启动类
1 package com.wsc.core;
2
3 import org.springframework.boot.SpringApplication;
4 import org.springframework.boot.autoconfigure.SpringBootApplication;
5
6 /**
7 * @version 1.0
8 * @ClassName Start
9 * @Description TODO
10 * @Author WSC
11 * @Date 2019/8/22 14:56
12 **/
13
14 /**
15 * springBoot启动类
16 */
17 @SpringBootApplication
18 public class Start {
19 /**
20 * springBoot 启动方法
21 * @param args
22 */
23 public static void main(String[] args) {
24 //类名.class
25 SpringApplication.run(Start.class,args);
26 }
27 }
View Code