转自：http://www.jianshu.com/p/fd5bd8657852

---

修改pom.xml

     
     
      4.0.0
      
     
      com.mkyong
      
     
      App
      
     
      1.0-SNAPSHOT
      
     
      jar
      
     
      App
      
     
      http://maven.apache.org
      
      
      
       UTF-8
       
      
      
       
       
        junit
        
       
        junit
        
       
        3.8.1
        
       
        test
        
       
      
      
       
        
        
         org.apache.maven.plugins
         
        
         maven-shade-plugin
         
        
         1.2.1
         
         
          
          
           package
           
           
           
            shade
            
           
           
            
             
             
              com.mkyong.App
              
             
            
           
          
         
        
       
      
    

<mainClass>com.mkyong.App</mainClass>此处的内容去src/main/java中寻找

例如：

再运行mvn clean compile,mvn clean package,java -jar target/App-1.0-SNAPSHOT.jar

就看到可爱的Hello World!了.