SpringBoot全家桶

前言

Spring简化了Java的开发,而SpringBoot简化了Spring。本文用SpringBoot采用分层的结构整合了filter，aspect，mybaits，logback，redis，rocketmq和dubbo等框架。这是一个比较接近实际项目的版本。

mybaits

在application.properties配置数据源和目录就行了，不用配置SqlSessionFactory和TransactionManager，如下

#mysql
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/mysql?serverTimezone=GMT%2B8
spring.datasource.username=root
spring.datasource.password=111111
# mybatis
# mybatis.config-location=classpath:/mybatis/mybatis-config.xml
mybatis.mapper-locations=classpath*:/mappers/*.xml
mybatis.type-aliases-package=com.example.demo.repository.entity

另外还需要设置MapperScan，如

@SpringBootApplication(scanBasePackages = "com.example.demo")
@MapperScan("com.example.demo.repository.dao")
public class StartApplication {

    public static void main(String[] args) {
        SpringApplication.run(StartApplication.class, args);
    }

}

logback

springboot支持logback，log4j等日志框架。如果用logback的话，springboot会默认寻找logback.xml或者logback-spring.xml。所以只需要配置一下，如

<?xml version="1.0" encoding="UTF-8" ?>

<configuration scan="true">
    <!-- Convert mvn placeholder to a logback managed property -->
    <property name="log.home" value="../logs"/>
    <property name="log.level" value="INFO"/>

    <!--=============================================================
     ===                  Appender definition                     ===
     =============================================================-->
    <appender name="ROOT" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${log.home}/root.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${log.home}/root.log.%d{yyyy-MM-dd}</fileNamePattern>
            <maxHistory>10</maxHistory>
        </rollingPolicy>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger - %msg%n</pattern>
            <charset>UTF-8</charset>
        </encoder>
    </appender>

    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger - %msg%n</pattern>
            <charset>UTF-8</charset>
        </encoder>
    </appender>

    <appender name="biz-appender" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${log.home}/biz.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${log.home}/biz.log.%d{yyyy-MM-dd}</fileNamePattern>
            <maxHistory>10</maxHistory>
        </rollingPolicy>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger - %msg%n</pattern>
            <charset>UTF-8</charset>
        </encoder>
    </appender>

    <!-- default -->
    <root level="${log.level:-INFO}">
        <appender-ref ref="ROOT"/>
        <appender-ref ref="STDOUT"/>
    </root>

    <logger name="com.example.demo.biz" level="${log.level:-INFO}" additivity="false">
        <appender-ref ref="biz-appender"/>
    </logger>
</configuration>

redis

redis配置非常简单，只需要加入依赖和配置就行

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

# Redis服务器地址
spring.redis.host=localhost
# Redis服务器连接端口
spring.redis.port=6379
# Redis服务器连接密码（默认为空）
spring.redis.password=

rocketmq

需要加入一个依赖，如

<dependency>
            <groupId>org.apache.rocketmq</groupId>
            <artifactId>rocketmq-spring-boot-starter</artifactId>
 </dependency>

消费者，如

@Component
@RocketMQMessageListener(topic="${rocketmq.topic}", consumerGroup = "${rocketmq.consumer.group}")
public class MyConsumer implements RocketMQListener<String> {

    private final static org.slf4j.Logger logger = LoggerFactory.getLogger(MyConsumer.class);
    @Override
    public void onMessage(String s) {
        logger.info(s);
    }
}

生产者，如

@Component
public class MyProducer {

    @Value("${rocketmq.topic}")
    private String topic;

    @Autowired(required = false)
    private RocketMQTemplate rocketMQTemplate;

    public void  sendMessage(Object message){
        rocketMQTemplate.convertAndSend(topic, message);
    }
}

dubbo

dubbo要用到zookeeper作为注册中心，所以要加入以下依赖，不过记得要排除slj4的依赖，不然会依赖冲突

        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
        </dependency>
        <!-- Dubbo -->
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo</artifactId>
        </dependency>
        <!-- Zookeeper dependencies -->
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-dependencies-zookeeper</artifactId>
        </dependency>

属性配置

# Spring boot application
spring.application.name=dubbo-auto-configuration-provider-demo
# Base packages to scan Dubbo Component: @org.apache.dubbo.config.annotation.Service
dubbo.scan.base-packages=com.example.demo.biz.service.apiimpl
dubbo.protocol.name=dubbo
dubbo.protocol.port=20880
dubbo.registry.address=zookeeper://127.0.0.1:2181

服务提供者，需要注意的是注解@Service是org.apache.dubbo.config.annotation.Service

@Service
public class MyFacadeImpl implements MyFacade {

    @Override
    public List<GoodVO> getHotGoodList() {
        List<GoodVO>  list=new ArrayList<>();
        GoodVO vo=new GoodVO();
        vo.setName("可乐");
        vo.setPrice(new BigDecimal(2.33));
        list.add(vo);
        return  list;
    }
}

服务消费者

   @Reference(check = false)
   MyFacade myFacade;

源码

源码地址   https://github.com/mycaizilin/springbootdemo

划重点

重点来了。虽然我看博客也写博客，但是不建议学习技术只看博客。首先，博客上的知识不一定是对的。其次，大多数博客都是作者的当时零碎记录，是不够全面和成体系的,而且可能是过期的。我比较推荐的是看官方文档，如官网上和GitHub上的，看官方的文档看不懂再来找其他资料也不迟。下面是springboot相关的一些官方文档。

springboot官方文档:             https://docs.spring.io/spring-boot/docs/2.1.4.RELEASE/reference/htmlsingle/

Dubbo Spring Boot :             https://github.com/apache/incubator-dubbo-spring-boot-project/blob/master/README_CN.md

Dubbo 官方文档:：               http://dubbo.apache.org/zh-cn/docs/user/quick-start.html

Rocketmq springboot文档： https://github.com/apache/rocketmq-spring/blob/master/README_zh_CN.md

Rocketmq  官方文档：           http://rocketmq.apache.org/docs/motivation/

mybaits springboot:               http://www.mybatis.org/spring-boot-starter/mybatis-spring-boot-autoconfigure/