struts 学习

 1 public class GetRequestParameterAction extends ActionSupport {
 2 
 3     private String bookName;
 4     private String bookPrice;
 5     
 6     public String getBookName() {
 7         return bookName;
 8     }
 9 
10     public void setBookName(String bookName) {
11         this.bookName = bookName;
12     }
13 
14     public String getBookPrice() {
15         return bookPrice;
16     }
17 
18     public void setBookPrice(String bookPrice) {
19         this.bookPrice = bookPrice;
20     }
21     
22     
23     public String  execute() throws Exception{
24         
25         
26         //方式一： 将参数作为Ａction的类属性，让OGNL自动填充
27          
28         System.out.println("方法一，把参数作为Action的类属性,让OGNL自动填充：");
29         System.out.println("bookName: "+this.bookName);
30         System.out.println("bookPrice: " +this.bookPrice);
31         
32         
33         //方法二:在Action中使用ActionContext得到parameterMap获取参数:
34         ActionContext context=ActionContext.getContext();
35         Map  parameterMap=context.getParameters();
36         
37         String bookName2[]=(String[])parameterMap.get("bookName");
38         String bookPrice2[]=(String[])parameterMap.get("bookPrice");
39         
40         System.out.println("方法二，在Action中使用ActionContext得到parameterMap获取参数：");
41         System.out.println("bookName: " +bookName2[0]);
42         System.out.println("bookPrice: " +bookPrice2[0]);
43         
44         
45         //方法三:在Action中取得HttpServletRequest对象，使用request.getParameter获取参数
46         HttpServletRequest request = (HttpServletRequest)context.get(ServletActionContext.HTTP_REQUEST); 
47          
48         String bookName=request.getParameter("bookName");
49         String bookPrice=request.getParameter("bookPrice");
50         
51         System.out.println("方法三，在Action中取得HttpServletRequest对象，使用request.getParameter获取参数：");
52         System.out.println("bookName: " +bookName);
53         System.out.println("bookPrice: " +bookPrice);
54         return SUCCESS;
55         
56     }
57 
58 }
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学习使用，谢谢博主！