概述
dubbo服务运行,也就是让生产服务的进程一直启动。如果生产者进程挂掉,也就不存在生产者,消费者不能进行消费。
Dubbo服务运行的三种方式如下:
1、使用Servlet容器运行(Tomcat、Jetty等) -不可用
缺点:增加复杂性(端口、管理)
浪费资源(内存)
需要占用多个端口和内存,这种方式是不可取的
2、自己建立Main方法类运行(Srping容器)
缺点:Dobbo本省提供的高级特性没用上,自己的启动类可能有缺陷
3、使用Dubbo框架提供的Main方法类来运行(Spring 容器) 建议使用
优点:框架本身提供(com.alibaba.dubbo.container.Main),可是现优雅关机(ShutdownHook)。
这个不存在缓存,生产者开启或者关闭之后dubbo-admin可以马上感知到。
下面测试方法2和方法3。
1.自建类发布服务:(简单-重要)
pom.xml如下:
<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>cn.qlq</groupId> <artifactId>zookeper</artifactId> <version>0.0.1-SNAPSHOT</version> <dependencies> <dependency> <groupId>org.apache.zookeeper</groupId> <artifactId>zookeeper</artifactId> <version>3.4.8</version> </dependency> <dependency> <groupId>org.apache.curator</groupId> <artifactId>curator-framework</artifactId> <version>2.12.0</version> </dependency> <dependency> <groupId>org.apache.curator</groupId> <artifactId>curator-recipes</artifactId> <version>2.12.0</version> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>dubbo</artifactId> <version>2.6.6</version> </dependency> <dependency> <groupId>org.javassist</groupId> <artifactId>javassist</artifactId> <version>3.20.0-GA</version> </dependency> <dependency> <groupId>io.netty</groupId> <artifactId>netty-all</artifactId> <version>4.1.34.Final</version> </dependency> <dependency> <groupId>com.101tec</groupId> <artifactId>zkclient</artifactId> <version>0.2</version> </dependency> <dependency> <groupId>org.apache.curator</groupId> <artifactId>curator-framework</artifactId> <version>2.12.0</version> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.16</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>1.7.25</version> </dependency> <dependency> <groupId>commons-lang</groupId> <artifactId>commons-lang</artifactId> <version>2.6</version> </dependency> </dependencies> <build> <!-- 配置了很多插件 --> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.5.1</version> <configuration> <source>1.7</source> <target>1.7</target> <encoding>UTF-8</encoding> </configuration> </plugin> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
1.1 xml配置格式的发布
provider.xml
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dubbo="http://dubbo.apache.org/schema/dubbo" xmlns="http://www.springframework.org/schema/beans" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://dubbo.apache.org/schema/dubbo http://dubbo.apache.org/schema/dubbo/dubbo.xsd"> <!-- 提供方应用信息,用于计算依赖关系 --> <dubbo:application name="hello-world-app"> <!-- 关闭QOS:Quality of Service --> <dubbo:parameter key="qos.enable" value="false" /> <dubbo:parameter key="qos.accept.foreign.ip" value="true" /> <dubbo:parameter key="qos.port" value="2222" /> </dubbo:application> <!-- 使用multicast广播注册中心暴露服务地址,IP设置: 224.0.0.0 - 239.255.255.255 --> <dubbo:registry address="zookeeper://127.0.0.1:2181" /> <!-- 用dubbo协议在20880端口暴露服务 --> <dubbo:protocol name="dubbo" port="20880" /> <!-- 声明需要暴露的服务接口 --> <dubbo:service interface="dubbo.DubboService" ref="demoService" /> <!-- 和本地bean一样实现服务 --> <bean id="demoService" class="dubbo.DubboServiceImpl" /> </beans>
provider.java发布服务:
package dubbo; import java.io.IOException; import java.util.concurrent.CountDownLatch; import org.springframework.context.support.ClassPathXmlApplicationContext; public class Provider { public static void main(String[] args) throws IOException, InterruptedException { ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[] { "provider.xml" }); context.start(); CountDownLatch countDownLatch = new CountDownLatch(1); countDownLatch.await(); } }
启动之后查看dubbo-admin管理界面:
2.API格式的发布
package dubbo.api; import java.util.concurrent.CountDownLatch; import com.alibaba.dubbo.config.ApplicationConfig; import com.alibaba.dubbo.config.ProtocolConfig; import com.alibaba.dubbo.config.RegistryConfig; import com.alibaba.dubbo.config.ServiceConfig; import dubbo.DubboService; import dubbo.DubboServiceImpl; public class Provider { public static void main(String[] args) throws InterruptedException { CountDownLatch countDownLatch = new CountDownLatch(1); // 服务实现 DubboService dubboService = new DubboServiceImpl(); // 当前应用配置 ApplicationConfig application = new ApplicationConfig(); application.setName("provider"); // 连接注册中心配置 RegistryConfig registry = new RegistryConfig(); registry.setAddress("zookeeper://127.0.0.1:2181"); registry.setUsername("aaa"); registry.setPassword("bbb"); // 服务提供者协议配置 ProtocolConfig protocol = new ProtocolConfig(); protocol.setName("dubbo"); protocol.setPort(12345); protocol.setThreads(200); // 注意:ServiceConfig为重对象,内部封装了与注册中心的连接,以及开启服务端口 // 服务提供者暴露服务配置 ServiceConfig<DubboService> service = new ServiceConfig<DubboService>(); // 此实例很重,封装了与注册中心的连接,请自行缓存,否则可能造成内存和连接泄漏 service.setApplication(application); service.setRegistry(registry); // 多个注册中心可以用setRegistries() service.setProtocol(protocol); // 多个协议可以用setProtocols() service.setInterface(DubboService.class); service.setRef(dubboService); service.setVersion("1.0.0"); // 暴露及注册服务 service.export(); countDownLatch.await(); } }
3.注解方式的发布
参考:https://www.cnblogs.com/qlqwjy/p/10539824.html
补充:自建类打成jar包的方式运行:
修改pom.xml
<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>cn.qlq</groupId> <artifactId>zookeper</artifactId> <version>0.0.1-SNAPSHOT</version> <dependencies> <dependency> <groupId>org.apache.zookeeper</groupId> <artifactId>zookeeper</artifactId> <version>3.4.8</version> </dependency> <dependency> <groupId>org.apache.curator</groupId> <artifactId>curator-framework</artifactId> <version>2.12.0</version> </dependency> <dependency> <groupId>org.apache.curator</groupId> <artifactId>curator-recipes</artifactId> <version>2.12.0</version> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>dubbo</artifactId> <version>2.6.6</version> </dependency> <dependency> <groupId>org.javassist</groupId> <artifactId>javassist</artifactId> <version>3.20.0-GA</version> </dependency> <dependency> <groupId>io.netty</groupId> <artifactId>netty-all</artifactId> <version>4.1.34.Final</version> </dependency> <dependency> <groupId>com.101tec</groupId> <artifactId>zkclient</artifactId> <version>0.2</version> </dependency> <dependency> <groupId>org.apache.curator</groupId> <artifactId>curator-framework</artifactId> <version>2.12.0</version> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.16</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>1.7.25</version> </dependency> <dependency> <groupId>commons-lang</groupId> <artifactId>commons-lang</artifactId> <version>2.6</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.9</version> </dependency> </dependencies> <build> <!-- 配置了很多插件 --> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.5.1</version> <configuration> <source>1.7</source> <target>1.7</target> <encoding>UTF-8</encoding> </configuration> </plugin> <!-- 打包jar文件时,配置manifest文件,加入lib包的jar依赖 --> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-jar-plugin</artifactId> <configuration> <classesDirectory>target/classes/</classesDirectory> <archive> <manifest> <mainClass>dubbo.Provider</mainClass> <!-- 打包时 MANIFEST.MF文件不记录的时间戳版本 --> <useUniqueVersions>false</useUniqueVersions> <addClasspath>true</addClasspath> <classpathPrefix>lib/</classpathPrefix> </manifest> <manifestEntries> <Class-Path>.</Class-Path> </manifestEntries> </archive> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-dependency-plugin</artifactId> <executions> <execution> <id>copy-dependencies</id> <phase>package</phase> <goals> <goal>copy-dependencies</goal> </goals> <configuration> <type>jar</type> <includeTypes>jar</includeTypes> <useUniqueVersions>false</useUniqueVersions> <outputDirectory> ${project.build.directory}/lib </outputDirectory> </configuration> </execution> </executions> </plugin> </plugins> </build> </project>
maven-jar-plugin 可以设置打包的一些信息。设置jar包运行的主类是dubbo.Provider
maven-dependency-plugin是打包项目所依赖的jar包,上面配置是生成依赖的jar包到target的lib目录下。
运行maven install命令生成jar包和对应的lib目录:
cmd运行下面命令即可:
E:xiangmuzookepertarget>set classpath=%classpath%;./lib; E:xiangmuzookepertarget>java -jar zookeper-0.0.1-SNAPSHOT.jar
dubbo-admin查看项目:
2. 使用dubbo提供的类来发布
使用com.alibaba.dubbo.container.Main类来发布
修改pom.xml即可:
<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>cn.qlq</groupId> <artifactId>zookeper</artifactId> <version>0.0.1-SNAPSHOT</version> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> </dependency> <dependency> <groupId>org.apache.zookeeper</groupId> <artifactId>zookeeper</artifactId> <version>3.4.8</version> </dependency> <dependency> <groupId>org.apache.curator</groupId> <artifactId>curator-framework</artifactId> <version>2.12.0</version> </dependency> <dependency> <groupId>org.apache.curator</groupId> <artifactId>curator-recipes</artifactId> <version>2.12.0</version> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>dubbo</artifactId> <version>2.6.6</version> </dependency> <dependency> <groupId>org.javassist</groupId> <artifactId>javassist</artifactId> <version>3.20.0-GA</version> </dependency> <dependency> <groupId>io.netty</groupId> <artifactId>netty-all</artifactId> <version>4.1.34.Final</version> </dependency> <dependency> <groupId>com.101tec</groupId> <artifactId>zkclient</artifactId> <version>0.2</version> </dependency> <dependency> <groupId>org.apache.curator</groupId> <artifactId>curator-framework</artifactId> <version>2.12.0</version> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.16</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>1.7.25</version> </dependency> <dependency> <groupId>commons-lang</groupId> <artifactId>commons-lang</artifactId> <version>2.6</version> </dependency> <dependency> <groupId>ch.qos.logback</groupId> <artifactId>logback-core</artifactId> <version>1.1.11</version> </dependency> </dependencies> <build> <!--jar包名称 --> <finalName>dubboService</finalName> <resources> <!--recources文件夹下的所有文件都打进jar包 --> <resource> <targetPath>${project.build.directory}/classes</targetPath> <directory>src/main/resources</directory> <filtering>true</filtering> <includes> <include>**/*.xml</include> <include>**/*.properties</include> </includes> </resource> <!-- 上文有说过,由于我的provider.xml文件不是在META-INF下,这一段代码的作用就是将 provider.xml文件拷贝到META-INF目录下 --> <resource> <targetPath>${project.build.directory}/classes/META-INF/spring</targetPath> <directory>src/main/resources/</directory> <filtering>true</filtering> <includes> <include>provider.xml</include> </includes> </resource> </resources> <pluginManagement> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.5.1</version> <configuration> <source>1.7</source> <target>1.7</target> <encoding>UTF-8</encoding> </configuration> </plugin> <!-- 解决Maven插件在Eclipse内执行了一系列的生命周期引起冲突 --> <plugin> <groupId>org.eclipse.m2e</groupId> <artifactId>lifecycle-mapping</artifactId> <version>1.0.0</version> <configuration> <lifecycleMappingMetadata> <pluginExecutions> <pluginExecution> <pluginExecutionFilter> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-dependency-plugin</artifactId> <versionRange>[2.0,)</versionRange> <goals> <goal>copy-dependencies</goal> </goals> </pluginExecutionFilter> <action> <ignore /> </action> </pluginExecution> </pluginExecutions> </lifecycleMappingMetadata> </configuration> </plugin> </plugins> </pluginManagement> <plugins> <!-- 打包jar文件时,配置manifest文件,加入lib包的jar依赖 --> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-jar-plugin</artifactId> <configuration> <classesDirectory>target/classes/</classesDirectory> <archive> <manifest> <mainClass>com.alibaba.dubbo.container.Main</mainClass> <!-- 打包时 MANIFEST.MF文件不记录的时间戳版本 --> <useUniqueVersions>false</useUniqueVersions> <addClasspath>true</addClasspath> <classpathPrefix>lib/</classpathPrefix> </manifest> <manifestEntries> <Class-Path>.</Class-Path> </manifestEntries> </archive> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-dependency-plugin</artifactId> <executions> <execution> <id>copy-dependencies</id> <phase>package</phase> <goals> <goal>copy-dependencies</goal> </goals> <configuration> <type>jar</type> <includeTypes>jar</includeTypes> <useUniqueVersions>false</useUniqueVersions> <outputDirectory> ${project.build.directory}/lib </outputDirectory> </configuration> </execution> </executions> </plugin> </plugins> </build> </project>
${project.build.directory} 构建目录,缺省为target。
运行maven install 或者package打包即可,然后到target目录下运行该jar包:
PS E:xiangmuzookepertarget> java -jar .dubboService.jar [2019-03-18 18:52:29] Dubbo service server started!
dubbo-admin查看项目:
简单的方式还是自己编写类发布服务。
转载于:https://www.cnblogs.com/qlqwjy/p/10554081.html
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