话题一：创建一个最简单的SpringBoot工程

• 1.Pom.xml引入文件

<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>ZBoot-SimpleDemo</groupId>
    <artifactId>ZBoot-SimpleDemo</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.7</java.version>
    </properties>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.1.RELEASE</version>
    </parent>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Camden.SR1</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
        </dependency>
        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.2</version>
        </dependency>
    </dependencies>

    <build>
        <sourceDirectory>src</sourceDirectory>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

• 2.UserDao创建后没有加任何的标注
• 3.创建SpringBoot的配置文件：@Configuration+文件扫描地址+@Bean

    @Configuration
    @ComponentScan(basePackages = "com.vincent.boot")
    public class MySpringConfig {
        @Bean
        // 通过该注解来表明是一个Bean对象，相当于xml中的<bean>
        public UserDao getUserDAO() {
            return new UserDao(); // 直接new对象做演示
        }
    }

• 4.然后加载Spring的配置文件

    public static void main(String[] args) {
            AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(MySpringConfig.class);
            
            UserService userService = context.getBean(UserService.class);
            
            List<User> userList = userService.queryUserList();
            
            for (int i = 0; i < userList.size(); i++) {
                System.out.println("--------------userList:"+userList.get(i));
            }
            
            context.close();
        }

话题二：如何读取外部配置信息

1.使用@PropertySource进行相关配置
@PropertySource(value = { "classpath:jdbc.properties","classpath:other.properties" }, ignoreResourceNotFound = true)

    @Configuration
    @ComponentScan(basePackages = "com.vincent.boot")
    @PropertySource(value = { "classpath:jdbc.properties" }, ignoreResourceNotFound = true)
    public class MySpringConfig {
        @Bean
        // 通过该注解来表明是一个Bean对象，相当于xml中的<bean>
        public UserDao getUserDAO() {
            return new UserDao(); // 直接new对象做演示
        }
        
        @Value("${jdbc.url}")
        private String jdbcUrl;
    
        @Value("${jdbc.driverClassName}")
        private String jdbcDriverClassName;
    
        @Value("${jdbc.username}")
        private String jdbcUsername;
    
        @Value("${jdbc.password}")
        private String jdbcPassword;
    
        @Bean(destroyMethod = "close")
        public DataSource dataSource() {
            BoneCPDataSource boneCPDataSource = new BoneCPDataSource();
            // 数据库驱动
            boneCPDataSource.setDriverClass(jdbcDriverClassName);
            // 相应驱动的jdbcUrl
            boneCPDataSource.setJdbcUrl(jdbcUrl);
            // 数据库的用户名
            boneCPDataSource.setUsername(jdbcUsername);
            // 数据库的密码
            boneCPDataSource.setPassword(jdbcUsername);
            // 检查数据库连接池中空闲连接的间隔时间，单位是分，默认值：240，如果要取消则设置为0
            boneCPDataSource.setIdleConnectionTestPeriodInMinutes(60);
            // 连接池中未使用的链接最大存活时间，单位是分，默认值：60，如果要永远存活设置为0
            boneCPDataSource.setIdleMaxAgeInMinutes(30);
            // 每个分区最大的连接数
            boneCPDataSource.setMaxConnectionsPerPartition(100);
            // 每个分区最小的连接数
            boneCPDataSource.setMinConnectionsPerPartition(5);
            return boneCPDataSource;
        }       
    }

话题三：启动一个项目被外部访问

• 1.pom中添加spring-boot-starter-web

<?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.vincent</groupId>
    <artifactId>TParent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>pom</packaging>
    
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.7</java.version>
    </properties>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.1.RELEASE</version>
    </parent>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Camden.SR1</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    
    <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-web</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
    
    <modules>
        <module>TServer-Provider</module>
        <module>TServer-Consumer</module>
        <module>TServer-Consumer-Feign</module>
        <module>TServer-Consumer-MyFeign</module>
        <module>TServer-Consumer-Ribbon</module>
        <module>TServer-Discovery-Eureka</module>
        <module>TServer-Discovery-HAEureka</module>
        <module>TServer-TT</module>
    </modules>
</project>

• 2.创建Controller+Config+主Application(此时全部合并在一起了)

@Configuration
@SpringBootApplication
@Controller
public class HelloApplication {

    @ResponseBody
    @GetMapping(value = "sayHello")
    public String sayHello() {
        return "sayHello";
    }
    
    public static void main(String[] args) {
        SpringApplication application = new SpringApplication(HelloApplication.class);
        application.run(args);
    }
}