一、eclipse导出maven工程的可执行jar包
建立两个maven工程 ZKServer 和ZKClient
注意：用maven进行开发管理的话，默认的打出来的jar包是不能运行的，需要在pom.xml文件中添加如下配置以生成可执行的jar包
<build>
<plugins>
<plugin>
<artifactId> maven-assembly-plugin </artifactId>
<configuration>
<descriptorRefs>
<descriptorRef>zkServer</descriptorRef>
</descriptorRefs>
<archive>
<manifest>
<mainClass>com.fanghao.AppServer</mainClass>
</manifest>
</archive>
</configuration>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
而我们在eclipse中创建的工程默认的 JRE System Library 是 Java-SE-1.5 ，我们需要添加以下配置让其变成1.7或1.8，并且无论我们对该maven工程update多少次，都不会回到1.5
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
ZKServer工程
<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 ">
<modelVersion>4.0.0</modelVersion>
<groupId>com.fanghao</groupId>
<artifactId>ZKServer</artifactId>
<version>0.0.1-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>3.4.11</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<artifactId> maven-assembly-plugin </artifactId>
<configuration>
<descriptorRefs>
<descriptorRef>zkServer</descriptorRef>
</descriptorRefs>
<archive>
<manifest>
<mainClass>com.fanghao.AppServer</mainClass>
</manifest>
</archive>
</configuration>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
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package com.fanghao;
import java.util.concurrent.CountDownLatch;