Spring Boot方式的Dubbo项目
项目依赖
需要org.apache.dubbo.dubbo-dependencies-bom, 需要org.apache.dubbo.dubbo-spring-boot-starter, 当前版本有2.7.0和2.7.1, dubbo版本已经发布到2.7.2了, 但是starter还没更新到2.7.2, 所以整体使用2.7.1版本
另外就是spring-boot的org.springframework.boot.spring-boot-dependencies, org.springframework.boot.spring-boot-starter-test
org.apache.dubbo.dubbo中带了springframework, javax.servlet, log4j, 在pom中要排除掉
在项目的maven settings.xml中, 只需要配public就可以, 不需要Apache Snapshot. 检查一下public底下有没有org.apache.dubbo, 没有的话, 把Central的proxy源配置到 http://repo1.maven.org/maven2/ 这个是最源头的仓库了, 现在从墙里访问速度也不慢.
Root模块
给项目随便起了个名字叫DB, 这个是root的pom内容
<?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.rockbb</groupId>
<artifactId>db</artifactId>
<packaging>pom</packaging>
<version>1.0-SNAPSHOT</version>
<name>DB: Root</name>
<modules>
<module>../db-commons-api</module>
<module>../db-commons-impl</module>
<module>../db-admin</module>
</modules>
<prerequisites>
<maven>3.3.9</maven>
</prerequisites>
<properties>
<!-- Global encoding -->
<project.jdk.version>1.8</project.jdk.version>
<project.source.encoding>UTF-8</project.source.encoding>
<!-- Global dependency versions -->
<springframework.boot.version>2.1.6.RELEASE</springframework.boot.version>
<dubbo.version>2.7.1</dubbo.version>
<development.mode>1</development.mode>
<development.developer>milton</development.developer>
<timestamp>${maven.build.timestamp}</timestamp>
<maven.build.timestamp.format>yyyyMMdd_HHmm</maven.build.timestamp.format>
<dubbo.application.version>develop-${development.developer}</dubbo.application.version>
<log.path>d:/logs</log.path>
<log.level>INFO</log.level>
<log.appender>stdout</log.appender>
<admin.root.path></admin.root.path>
</properties>
<dependencyManagement>
<dependencies>
<!-- Spring Boot Dependencies -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>${springframework.boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<!-- Apache Dubbo Dependencies -->
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo-dependencies-bom</artifactId>
<version>${dubbo.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<version>${springframework.boot.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo-spring-boot-starter</artifactId>
<version>${dubbo.version}</version>
</dependency>
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo</artifactId>
<version>${dubbo.version}</version>
<exclusions>
<exclusion>
<groupId>org.springframework</groupId>
<artifactId>spring</artifactId>
</exclusion>
<exclusion>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
</exclusion>
<exclusion>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
<configuration>
<source>${project.jdk.version}</source>
<target>${project.jdk.version}</target>
<encoding>${project.source.encoding}</encoding>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>3.1.0</version>
<configuration>
<encoding>${project.source.encoding}</encoding>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>${springframework.boot.version}</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
root模块用于规定全局的版本号, 以及完整构建
API模块
这是用于服务端暴露接口信息给消费端的模块, 要尽量简单干净依赖少, 避免依赖污染. 这个是api模块的pom内容
<?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>
<parent>
<groupId>com.rockbb</groupId>
<artifactId>db</artifactId>
<version>1.0-SNAPSHOT</version>
<relativePath>../db/pom.xml</relativePath>
</parent>
<artifactId>db-commons-api</artifactId>
<packaging>jar</packaging>
<name>DB: Commons API</name>
<dependencies>
</dependencies>
</project>
Commons模块
这个是服务端接口具体实现的模块, 需要启动服务, 注册自己到服务注册中心(这里使用的是zookeeper).
pom文件
<?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>
<parent>
<groupId>com.rockbb</groupId>
<artifactId>db</artifactId>
<version>1.0-SNAPSHOT</version>
<relativePath>../db/pom.xml</relativePath>
</parent>
<artifactId>db-commons-impl</artifactId>
<packaging>jar</packaging>
<name>DB: Commons Implementation</name>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
</dependency>
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo-spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo</artifactId>
</dependency>
<dependency>
<groupId>org.apache.curator</groupId>
<artifactId>curator-recipes</artifactId>
</dependency>
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<exclusions>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
</exclusion>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
</exclusion>
<exclusion>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.rockbb</groupId>
<artifactId>db-commons-api</artifactId>
<version>${project.version}</version>
</dependency>
</dependencies>
<build>
<finalName>db-commons</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-deploy-plugin</artifactId>
<configuration>
<skip>true</skip>
</configuration>
</plugin>
</plugins>
</build>
</project>
.因为zookeeper里带的logger和外面的logger冲突并且版本较低, 所以将zookeeper里的logger排除掉了.
.在build模块中, 用maven-deploy-plugin.configruation.skip: true 避免将本模块install到本地. 因为这是最终部署用的末端模块, 不会再有模块依赖于这个模块
application.yml文件
server:
port: 8760
spring:
application:
name: db-commons
dubbo:
application:
name: db-commons-@development.developer@ # Application name is the unique identifier of an application. It is for registry combing the dependencies of applications. Note: Consumer and provider application name should not be the same, and this parameter is not a match condition. As a suggestion, you can name it as your project name.
qos:
enable: false # Activate QoS or not
port: 33333 # The port QoS would bind to
accept:
foreign:
ip: false # Enable remote access or not
registry:
protocol: zookeeper # The protocol of the registry center. dubbo, multicast, zookeeper, redis, consul(2.7.1), sofa(2.7.2), etcd(2.7.2), nacos(2.7.2) are available.
address: 127.0.0.1:2181
provider:
delay: -1 # The delay time(ms) for registering services. When set to -1, it indicates that the services will expose to registry after the Spring context is initialized
timeout: 30000 # The RPC timeout(ms)
retries: 0 # The retry count for RPC, not including the first invoke. Please set it to 0 if don't need to retry.
version: @dubbo.application.version@
protocol:
id: dubbo # Bean Id of the protocol, can be referenced in <dubbo:service protocol=""> The default value is equal to the value of name attribute while id is not filled. If name value has already existed, it will add index to it's suffix.
name: dubbo
accepts: 500 # The maximum connection count of the service provider
# dubbo协议缺省端口为20880，rmi协议缺省端口为1099，http和hessian协议缺省端口为80；如果配置为-1 或者 没有配置port则会分配一个没有被占用的端口。Dubbo 2.4.0+，分配的端口在协议缺省端口的基础上增长，确保端口段可控。
port: 10080
serialization: hessian2 # The default serialization of dubbo protocol is hessian2, rmi protocol is java, http protocol is json
ApplicationBoot.java文件
import org.apache.dubbo.config.spring.context.annotation.EnableDubbo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@EnableDubbo
@SpringBootApplication
public class ApplicationBoot {
public static void main(String[] args) {
SpringApplication.run(ApplicationBoot.class, args);
}
}
DemoServiceImpl文件
import com.rockbb.db.commons.api.service.DemoService;
import org.apache.dubbo.config.annotation.Service;
import org.springframework.stereotype.Component;
@Service
@Component
public class DemoServiceImpl implements DemoService {
@Override
public String hello(String name) {
return "Hello " + name;
}
}
Admin模块(消费端)
这里用到了web, 展示层使用的是freemarker.
pom文件
<?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>
<parent>
<groupId>com.rockbb</groupId>
<artifactId>db</artifactId>
<version>1.0-SNAPSHOT</version>
<relativePath>../db/pom.xml</relativePath>
</parent>
<artifactId>db-admin</artifactId>
<packaging>jar</packaging>
<name>DB: Admin</name>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-freemarker</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo-spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo</artifactId>
</dependency>
<dependency>
<groupId>org.apache.curator</groupId>
<artifactId>curator-recipes</artifactId>
</dependency>
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<exclusions>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
</exclusion>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
</exclusion>
<exclusion>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.rockbb</groupId>
<artifactId>db-commons-api</artifactId>
<version>${project.version}</version>
</dependency>
</dependencies>
<build>
<finalName>db-admin</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>false</filtering>
<excludes>
<exclude>*.yml</exclude>
<exclude>*.xml</exclude>
</excludes>
</resource>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
<includes>
<include>*.yml</include>
<include>*.xml</include>
</includes>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-deploy-plugin</artifactId>
<configuration>
<skip>true</skip>
</configuration>
</plugin>
</plugins>
</build>
</project>
application.yml文件
server:
port: 8764
servlet:
session:
timeout: 600
context-path: @admin.root.path@
spring:
application:
name: db-admin
freemarker:
cache: true
settings:
auto_import: spring.ftl as S
number_format: '#'
template_update_delay: 0
default_encoding: UTF-8
datetime_format: yyyy-MM-dd HH:mm:ss
classic_compatible: true
template_exception_handler: ignore
mvc:
view:
prefix: /templates/
suffix: .ftl
dubbo:
application:
name: db-admin-@development.developer@ # Application name is the unique identifier of an application. It is for registry combing the dependencies of applications. Note: Consumer and provider application name should not be the same, and this parameter is not a match condition. As a suggestion, you can name it as your project name.
qos:
enable: false # Activate QoS or not
port: 33333 # The port QoS would bind to
accept:
foreign:
ip: false # Enable remote access or not
registry:
protocol: zookeeper # The protocol of the registry center. dubbo, multicast, zookeeper, redis, consul(2.7.1), sofa(2.7.2), etcd(2.7.2), nacos(2.7.2) are available.
address: 127.0.0.1:2181
consumer:
version: @dubbo.application.version@
check: false
ApplicationBoot.java
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class ApplicationBoot {
public static void main(String[] args) {
SpringApplication.run(ApplicationBoot.class, args);
}
}
DemoController.java
import com.rockbb.db.commons.api.service.DemoService;
import org.apache.dubbo.config.annotation.Reference;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import javax.servlet.http.HttpServletRequest;
@Controller
public class DemoController {
private static Logger logger = LoggerFactory.getLogger(DemoController.class);
@Reference
private DemoService demoService;
@RequestMapping(value = {"/", "/index"})
public String doIndex(HttpServletRequest request) {
String name = request.getParameter("name");
if (name != null) {
name = demoService.hello(name);
}
logger.info("Name: {}", name);
return "index";
}
}
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