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
