public class GetRequestParameterAction extends ActionSupport {

    private String bookName;   
    private String bookprice;

    public String getBookName() {
        return bookName;
    }
    public void setBookName(String bookName) {
        this.bookName = bookName;
    }
    public String getBookprice
 
() {
        return bookprice;
    }
    public void setBookprice(String bookprice) {
        this.bookprice = bookprice;
    }

    public String  execute() throws Exception{    

        //方式一： 將引數作為Ａction的類屬性，讓OGNL自動填充 
        System.out.println("bookName: "+this.bookName); 
        System.out.println("bookPrice: "
 
 +this.bookprice);

        //方法二:在Action中使用ActionContext得到parameterMap獲取引數: 
        ActionContext context=ActionContext.getContext(); 
        Map<K, V>  parameterMap=context.getParameters();

        String bookName2[]=parameterMap.get("bookName");
        String bookPrice2[]=(String[])parameterMap.get("bookprice"
 
);

        System.out.println("bookName: " +bookName2[0]);
        System.out.println("bookPrice: " +bookPrice2[0]);

        //方法三:在Action中取得HttpServletRequest物件，使用request.getParameter獲取引數 
        HttpServletRequest request = (HttpServletRequest)context.get(ServletActionContext.HTTP_REQUEST);

        String bookName=request.getParameter("bookName");
        String bookPrice=request.getParameter("bookPrice");

        System.out.println("bookName: " +bookName);
        System.out.println("bookPrice: " +bookPrice);  

        return SUCCESS;  
    }
}