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代码片段：

public class LoginAction extends BaseAction {	private Map
   
     usCiteis = new HashMap
    
     ();		private Map
     
       canadaCiteis = new HashMap
      
       ();		private Map
       
         mexicoCiteis = new HashMap
        
         (); public String method1() throws Exception { canadaCiteis.put(1, "Canada city 1"); canadaCiteis.put(2, "Canada city 2"); canadaCiteis.put(3, "Canada city 3"); canadaCiteis.put(4, "Canada city 4"); canadaCiteis.put(5, "Canada city 5"); canadaCiteis.put(6, "Canada city 6"); usCiteis.put(7, "US city 1"); usCiteis.put(8, "US city 2"); usCiteis.put(9, "US city 3"); mexicoCiteis.put(10, "Mexico city 4"); mexicoCiteis.put(11, "Mexico city 5"); mexicoCiteis.put(12, "Mexico city 6"); return SUCCESS; } public Map
         
           getUsCiteis() { return usCiteis; } public void setUsCiteis(Map
          
            usCiteis) { this.usCiteis = usCiteis; } public Map
           
             getCanadaCiteis() { return canadaCiteis; } public void setCanadaCiteis(Map
            
              canadaCiteis) { this.canadaCiteis = canadaCiteis; } public Map
             
               getMexicoCiteis() { return mexicoCiteis; } public void setMexicoCiteis(Map
              
                mexicoCiteis) { this.mexicoCiteis = mexicoCiteis; }}
              
             
            
           
          
         
        
       
      
     
    
   

 HTML代码片段：

 其中，<s:select>标签里头的list属性是必填项。可以用它来做一个默认标题。

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