maven项目打包成可执行的jar

编写功能类:

 package com.hpay.FileToZkUtil;

 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.util.concurrent.CountDownLatch;

 import org.apache.log4j.Logger;
 import org.apache.zookeeper.KeeperException;
 import org.apache.zookeeper.WatchedEvent;
 import org.apache.zookeeper.Watcher;
 import org.apache.zookeeper.Watcher.Event.KeeperState;
 import org.apache.zookeeper.ZooKeeper;
 import org.apache.zookeeper.data.Stat;

 public class FileToZkUtil
 {
     private static final Logger logger = Logger.getLogger(FileToZkUtil.class);

     private static CountDownLatch connectedSemaphore = new CountDownLatch( 1 );   

     /**
      *
      * @param zkUrl      zookeeper地址
      * @param zkNode     zookeeper节点
      * @param filePath   文件路径
      */
     @SuppressWarnings("unused")
     public static void setFileToZkNode(String zkUrl, String zkNode, String filePath) {

         Watcher watch = new Watcher() {
             public void process(WatchedEvent event) {
                 // System.out.println(event.getPath());
                 logger.info(">>>>> " + event.getPath() +">>>>>" + event.getType());
                 if (KeeperState.SyncConnected == event.getState()) {
                     connectedSemaphore.countDown();
                 }
             }
         };
         ZooKeeper zk;
         try {
             //读取目标文件
             byte[] data = readFile(filePath);
             if (data != null) {
                 zk = new ZooKeeper(zkUrl, 3000, watch);
                 connectedSemaphore.await();
                 logger.info("zk连接创建成功:" + zkUrl);
                 //测试是否存在目标节点
                 Stat stat = zk.exists(zkNode, true);
                 logger.info("目标节点状态:" + stat);
                 //设置目标节点数据
                 zk.setData(zkNode, data, -1);
             } else {
                 logger.info("获取" + filePath + "数据失败!");
             }

         } catch (IOException e) {
             e.printStackTrace();
             logger.error("绑定zk节点出错:" + e.getMessage());
         } catch (KeeperException e) {
             e.printStackTrace();
             logger.error("绑定zk节点出错:" + e.getMessage());
         } catch (InterruptedException e) {
             e.printStackTrace();
             logger.error("绑定zk节点出错:" + e.getMessage());
         }
     }

     //读取文件
     private static byte[] readFile(String filePath) {
         File file = new File(filePath);
         byte b[] = null;
         if (file.isFile() && file.exists()) {
             FileInputStream fis;
             try {
                 fis = new FileInputStream(file);
                 int count = fis.available();
                 int readCount = 0;
                 b = new byte[count];
                 while (readCount < count) {
                     readCount += fis.read(b, readCount, count - readCount);
                 }
                 fis.close();
             } catch (FileNotFoundException e) {
                 e.printStackTrace();
                 logger.error("读取文件出错:" + e.getMessage());
             } catch (IOException e) {
                 e.printStackTrace();
                 logger.error("读取文件出错:" + e.getMessage());
             }
         }
         return b;
     }
 }

编写main方法类:

 public class MianClass {
     public static void main(String[] args) {
         // FileToZkUtil.setFileToZkNode("10.48.172.101:2161", "/test", "E:/test/zookeeper/t.txt");
         FileToZkUtil.setFileToZkNode(args[0], args[1], args[2]);
     }
 }

在pom文件中配置:

 <build>
         <plugins>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-assembly-plugin</artifactId>
                 <configuration>
                     <archive>
                         <manifest>
                             <mainClass>com.hpay.FileToZkUtil.MianClass</mainClass>
                         </manifest>
                     </archive>
                     <descriptorRefs>
                         <descriptorRef>jar-with-dependencies</descriptorRef>
                     </descriptorRefs>
                 </configuration>
             </plugin>
         </plugins>
       </build>

打包方式：

1.进入到项目所在目录,例如:

cd D:\workspace\riskCompensate\FileToZkUtil

2.运行命令

mvn assembly:assembly

3.在项目的target目录中可以看到如下文件

说明打包完成.

运行方式:

1.在cmd命令窗口进入target目录

cd  cd D:\workspace\riskCompensate\FileToZkUtil\target

2.输入

java -jar FileToZkUtil-0.0.1-SNAPSHOT-jar-with-dependencies.jar 10.48.172.101:2161 /test E:/test/zookeeper/t.txt

即可执行该jar,其中 10.48.172.101:2161    /test     E:/test/zookeeper/t.txt 为main方法的三个参数

需要注意的事项:

1.如果项目中依赖了其他maven项目,需要先将依赖的项目编译.

选中依赖的项目执行 maven install

2.需要将依赖的jar,如该项目中的zookeeper的pom文件中scope属性修改为compile