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 iskCompensateFileToZkUtil

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 iskCompensateFileToZkUtil arget

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