关于Spring Boot你不得不知道的事--Spring Boot的基本操作

表示当前pom文件从spring-boot-starter-parent继承下来，在spring-boot-starter-parent中提供了很多默认配置，可以简化我们的开发。

• Java版本和编码方式

<properties>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
    <resource.delimiter>@</resource.delimiter>
    <maven.compiler.source>${java.version}</maven.compiler.source>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.target>${java.version}</maven.compiler.target></properties>

• 依赖管理spring-boot-dependencies

<properties>
    <activemq.version>5.15.9</activemq.version>
    <antlr2.version>2.7.7</antlr2.version>
    <appengine-sdk.version>1.9.73</appengine-sdk.version>
    <artemis.version>2.6.4</artemis.version>
    ...</properties>

官网说明文档见：13.2.2 Using Spring Boot without the Parent POM

<dependencyManagement>
   <dependencies>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-dependencies</artifactId>
         <version>2.1.4.RELEASE</version>
         <type>pom</type>
         <scope>import</scope>
      </dependency>
   </dependencies></dependencyManagement>

1.3 Starters

thirdpartyproject-spring-boot-starter

• spring-boot-web-starter

2.1 @SpringBootApplication

2.2 SpringApplication.run

3.1 初步感受

server.port=9090

3.3 给属性注入值

• 实体类Person和IDCard

public class Person {    private String name;    private int age;    private Date birthday;    private String[] hobbies;    private IDCard idCard;
    ...
}

public class IDCard {    private int id;    private String number;
}

• yml注入写法

person:
	name: Jack
	age: 17
	birthday: 1997/06/01
	hobbies: [code，sing，share]
	idCard: 
		id: 1
		number: 111

• Person类增加注解

@Component@ConfigurationProperties(prefix="person")

• 测试

@Autowiredprivate Person person;

4.1 动态资源

4.2 静态资源

• static文件夹

观察

@ConfigurationProperties(prefix = "spring.resources", ignoreUnknownFields = false)public class ResourceProperties {

5.1 需求

重温一下web项目创建的过程。

db_gupao_springboot--->t_user

5.7 开发service层

@Servicepublic class UserService {    @Autowired
    public UserMapper userMapper;    public User findByUsername(String username){        return userMapper.find(username);
    }    public List<User> listUser(){        return userMapper.list();
    }    public int insertUser(User user){        return userMapper.insert(user);
    }    public int updateUser(User user){        return userMapper.update(user);
    }    public int delete(int id){        return userMapper.delete(id);
    }
}

5.10 application.properties文件配置

#数据源
spring:
  datasource:
    url: jdbc:mysql://127.0.0.1:3306/boot?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
    username: root
    password: 123456
    driver-class-name: com.mysql.cj.jdbc.Driver
#mybatis托管mapper文件
mybatis:
  mapper-locations: classpath:mapper/*.xml

http://localhost:8888/user/listall

• 增加

http://localhost:8888/user/delete?id=3

java -jar xxx.jar

• war包

<groupId>com.csdn</groupId><artifactId>springboot-demo2</artifactId><version>0.0.1-SNAPSHOT</version><packaging>war</packaging>

7.1 IDEA创建工程

dependencies:Reactive Web,Reactive MongoDB,Lombok,Actuator,Security

7.3 REST

@SpringBootApplicationpublic class BootifulApplication {    @Bean
    RouterFunction<ServerResponse> routes(CustomerRepository cr){        return RouterFunctions.route(GET("/customers"),serverRequest -> ok().body(cr.findAll(),Customer.class));
    }    public static void main(String[] args) {
        SpringApplication.run(BootifulApplication.class, args);
    }

}

Spring Boot featurese strong opinions,loosely held.

It's easy to change any of them with properties or pluggable implementations

management.endpoint.health.show-details=always
management.endpoints.web.exposure.exclude=*

@BeanHealthIndicator healthIndicator(){return () -> Health.status("I <3 Production").build();
}

Effortlessly plugin authentication and authorization in a traditional or reactive application with Spring Security

@BeanMapReactiveUserDetailsService users(){    return new MapReactiveUserDetailsService(User.withDefaultPasswordEncoder().username("user").password("pw").roles("USER").build());
}

Let's provision a MongoDB instance,configure our application's route and MongoDB binding,and then push our application to production with Cloud Foundry.

定位到my-mongodb文件夹

• 复制对应文件，修改和观察