Dubbo的配置及启动

Tomcat+Dubbo安装

1.将tomcat的webapps目录下的所有文件清空，讲Dubbo管理控制台的程序dubbo-admin-2.5.3.war放

到webapps中，并且解压命名为ROOT。

unzip dubbo.war -d ROOT

2.配置dubbo.properties

将以下地址改为你Zookeeper注册的地址。前提：已经安装过Zookeeper。

dubbo.registry.address=zookeeper://192.168.137.128:2181

   3.启动tomcat

浏览：http://192.168.137.128:8080/出现以下界面

PS：JDK最好使用1.7版本，因为dubbo使用的Spring版为2.X 具体原因也说不清楚，我最早部署时也是使用JDK1.8 启动tomcat时报错：

RROR context.ContextLoader - Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'uriBrokerService': Cannot create inner bean '(inner bean)' of type [com.alibaba.citrus.service.uribroker.impl.URIBrokerServiceImpl$URIBrokerInfo] while setting bean property 'brokers' with key [0]; nested excepti on is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#25': Cannot create inner bean 'server' of type [com.alibaba.citrus.service.uribroker.uri.GenericURIBroker] while setting constructor argument; nested exception is org.springframework.beans.fact ory.BeanCreationException: Error creating bean with name 'server': Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'URIType' of bean class [com.alibaba.citrus.service.uribroker.uri.GenericURIBroker]: Bean property 'URIType' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?
解决方案可以参考：https://github.com/alibaba/dubbo/issues/50

为了省事我是将JDK降到1.7 。

dubbo官网com.alibaba.dubbo.container.Main 启动服务配置

相应的配置已经配置好了，接下来介绍使用dubbo官网com.alibaba.dubbo.container.Main 启动服务实现优雅关机

pop.xml打包配置

<build>
		<finalName>pay-service-bank</finalName> <!--包名称 -->
		<resources>
			<resource>
				<targetPath>${project.build.directory}/classes</targetPath>
				<directory>src/main/resources</directory>
				<filtering>true</filtering>
				<includes><!-- 配置文件信息 -->
					<include>**/*.xml</include>
					<include>**/*.properties</include>
				</includes>
			</resource>
			<resource>
				<targetPath>${project.build.directory}/classes/META-INF/spring</targetPath>
				<directory>src/main/resources/spring</directory>
				<filtering>true</filtering>
				<includes>
					<include>spring-context.xml</include>
				</includes>
			</resource>
		</resources>
		<pluginManagement>
			<plugins>
				<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>
							<outputDirectory>
								${project.build.directory}/lib
							</outputDirectory>
						</configuration>
					</execution>
				</executions>
			</plugin>
		</plugins>
	</build>

 ps :spring-context.xml文件中对其他xml的引入地址要写成：

<import resource="classpath:spring/spring-mybatis.xml" />
<import resource="classpath:spring/applicationContext.xml" />

原因是我们在打包配置时将spring-context.xml文件复制到META-INF/spring下，如果还是使用相对地址配置就出错了找不到文件

OK打包部署。

自定义Dubbo服务端维护的shell脚本

#! /bin/bash
usage(){

   echo "----------USAGE:--------------------"
   echo "provider  start"
   echo "provider  stop"
   echo "provider  start  xx"
   echo "provider  stop   xx"
   echo "-------------------------------------"
}

stopAll(){

    procids=`ps -fe|grep jar |grep -v grep |grep -v tomcat| awk '{print $2}'`
    if [ -z "$procids" ]; then
        echo  tip:  no process  found
    else
        for procid in $procids
          do
               kill $procid
          done
    fi
}

startAll(){
    echo '....'
    jars=`ls *.jar`
    if [ -z "$jars" ]; then
        echo top:  no jar found,please check if you are in correct directory...
    else
        for jarName in $jars
        do
            #logName=`echo ${jarName/jar/log}`
            logName='all.log'
            nohup java $JAVA_OPTS -jar $jarName >>$logName 2>1 &
        done
    fi;
}

cmd=$1
module=$2

JAVA_OPTS="-server -Xms4096m  -Xmx4096m  -verbose:gc  -XX:+PrintGCDetails  -XX:PermSize=256M -XX:MaxPermSize=512m"

if [ $# -gt 2 ] || [ $# -lt 1 ];  then
   usage;
elif [ $cmd != 'start' ] &&  [ $cmd != 'stop' ]; then
   usage;
else
   case $cmd  in
          'start')
                                if [ $#  -eq 1 ] ; then
                                       echo start all provider ............
                                       procids=`ps -fe|grep jar |grep -v grep |grep -v tomcat| awk '{print $2}'`
                                       if [ -z "$procids" ]; then
                                             echo ''
                                       else
                                              stopAll
                                       fi;
                                       startAll
                                else
                                       echo start $module  ........
                                       echo
                                       if [ -n $module".jar" ];  then
                                                procid=`ps -fe|grep $module".jar" |grep -v grep | awk '{print $2}'`
                                                echo $procid
                                                if [ -z "$procid" ]; then
                                                    #nohup java -jar $module".jar" >$module".log" &
                                                    nohup java $JAVA_OPTS -jar $module".jar" >>all.log 2>1 &
                                                else
                                                    echo  tip:     $module".jar"  has started already.  don not  start again!
                                                fi
                                       else
                                                echo $module".jar not exists"
                                       fi
                                       echo
                                fi
                                ;;
           'stop')
                                if [ $#  -eq 1 ] ; then
                                       echo stop all provider ............
                                       stopAll
                                else
                                       echo stop  $module  ........
                                       echo
                                       procid=`ps -fe|grep $module".jar" |grep -v grep | awk '{print $2}'`
                                       if [ -z "$procid" ]; then
                                                echo   tip:   java $module".jar"  process not exists;
                                       else
                                                kill $procid
                                       fi
                                       echo
                                fi
                                ;;
   esac
fi

　　

ps:Dubbo是通过JDK的ShutdownHook来完成优雅停机的，所以如果用户使用"kill -9 PID"等强制关闭指令，是不会执行优雅停机的，只有通过"kill PID"时，才会执行。

Maven内置变量说明：

• ${basedir} 项目根目录
• ${project.build.directory} 构建目录，缺省为target
• ${project.build.outputDirectory} 构建过程输出目录，缺省为target/classes
• ${project.build.finalName} 产出物名称，缺省为${project.artifactId}-${project.version}
• ${project.packaging} 打包类型，缺省为jar
• ${project.xxx} 当前pom文件的任意节点的内容