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  • Java------遍历Map<k,v>的方法

    1.

    public class MapAction extends ActionSupport{
        private Map<String, User> map = new HashMap<>();
    
        public Map<String, User> getMap() {
            return map;
        }
    
        public void setMap(Map<String, User> map) {
            this.map = map;
        }
        
        @Override
        public String execute() throws Exception {
            //方法一:通过Entry遍历<迭代Entry>
            for(Entry<String, User> entry : map.entrySet()) {
                System.out.println(entry.getKey()+":"+entry.getValue().getUsername());
            }
            //方法二:通过Set集合遍历<迭代Set>
            for(String key: map.keySet()){
                System.out.println(key + ":" + map.get(key).getPassword());
            }
            
            return SUCCESS;
        }
        
    }
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  • 原文地址:https://www.cnblogs.com/tianhengblogs/p/6759188.html
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