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                            ### 僅供練習，提高熟練度，并不具備實戰意義

①在web.xml文件中設置兩個WEB應用的初始化參數：user,password
②定義一個login.html，里面定義連個請求字段user,password,發送請求到loginServlet
③再創建一個LoginServlet，在其中獲取請求的user,password，比對其和web.xml文件中定義的請求參數是否一致，若一致，響應Hello:xxx;若不一致，響應Sorry:xxx；xxx為user

拓展：在數據庫建一張test_user表，里面存幾個字段，判斷頁面輸入的用戶信息在數據庫中是否存在。存在響應Hello:xxx;不存在，響應Sorry:xxx；xxx為user
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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