用過struts都清楚,struts的開發一般要寫兩個類,FormBean和Action類,通常情況下Action是這樣的:

public???class?XXXAction??extends?Action?
{
????public?ActionForward?execute(ActionMapping?mapping,?ActionForm?form,

?????????????????????????????????HttpServletRequest?request,?HttpServletResponse?response)?throws?Exception?
{
????????XXXXForm?theform?=(XXXXForm)?form;//form的強制轉型
????????//這里就是你要處理的業務邏輯了?
????????return?mapping.findForward("XXXX");
????}這是一個Action最少的代碼了,它沒有處理任何邏輯,只是一個跳轉,FormBean的話,只要繼承ActionForm,代碼到沒有規定,到時,我們可能會想,每個Action里面都必須寫上面那些代碼,煩啊,還有在每個FormBean里我們一般都會定義一些常用的屬性,如event,根據event的值,我們來決定一些邏輯的處理及頁面的跳轉,每次要寫,也煩啊。
?? 好,煩的話,那我們要開始做點事情了,首先,寫一個formBean代碼如下:
public?class?XXXForm?extends??ActionForm
{
????private?String?event;//事件名

????public?String?getEvent()?
{
????????return?event;
????}

????public?void?setEvent(String?event)?
{
????????this.event?=?event;
????}
}我想這誰都應該清楚,然后我們再寫frombean時,就不要extends? ActionForm,而是extends? XXXForm了,這樣,我們省了些代碼,我們再來看Action,也這樣試試:

public?abstract?class?XXXAction??extends?Action?
{
????public?ActionForward?execute(ActionMapping?mapping,?ActionForm?form,

?????????????????????????????HttpServletRequest?request,?HttpServletResponse?response)?throws?Exception?
{
????????XXXForm?theform?=(XXXForm)?form;
????????return?mapping.findForward(doAction(theform));
????}

?????/**?*//**
??????*?處理一些業務
??????*?@param?form
??????*?@return????返回mapping指向的字符串
??????*/
???public?abstract??String?doAction(BaseForm?form);//抽象
}這樣的話,我們再寫Action類時,就不extends Action而是extends XXXAction,代碼就像:

public?class?***Action?extends?XXXAction?
{

????public?String?doAction(XXXForm?form)?
{
????????***Form?theform?=?(***Form)?form;//強制轉成你真正的formbean
?????//這里就是你要處理的業務邏輯了???
?????return?"success";
????}
}
public?class?BaseForm?extends??ActionForm
{
????private?String?event;
????private?HttpServletRequest?request;

????/**?*//**
??????*?注:這個是得到用戶信息,這個只是一個例子,也可不實現,由request得到session,再得到

user,
??????*?但reguser字符串對一般開發人員可能是不可見的
??????*/

????public?User?getUser()?
{
????????return???(User)?getRequest().getSession().getAttribute("reguser");
????}

????public?HttpServletRequest?getRequest()?
{
????????return?request;
????}

????/**?*//**
??????*?注:這里用的protected,這樣可以就同一包的類可調用,其它類是不可見的
??????*/

????protected?void?setRequest(HttpServletRequest?request)?
{
????????this.request?=?request;
????}

????public?String?getEvent()?
{
????????return?event;
????}

????public?void?setEvent(String?event)?
{
????????this.event?=?event;
????}
}BaseAction代碼:

public?abstract?class?BaseAction??extends?Action?
{
????public?ActionForward?execute(ActionMapping?mapping,?ActionForm?form,
?????????????????????????????????HttpServletRequest?request,?HttpServletResponse?response)?


throws?Exception?
{
????????BaseForm?theform?=(BaseForm)?form;
????????theform.setRequest(request);//加了這句
????????return?mapping.findForward(doAction(theform));
????}

?????/**?*//**
??????*?處理一些業務
??????*?@param?form
??????*?@return????返回mapping指向的字符串
??????*/
???public?abstract??String?doAction(BaseForm?form);
}











?? 好,煩的話,那我們要開始做點事情了,首先,寫一個formBean代碼如下:












































就是以上一些代碼,簡單多了吧,return一個字符串就行了,感覺還有點像webwork了,到此完了嗎,有沒
有什么還沒有做呢,對了,這樣的話,我們定義的Action都成無會話的bean了,所以request是要得到的
,很多情況下的url是***action.do?id=cctv,而且一般是系統都是把用戶的信息放入session中的,所以
request是強烈要求要還給我們的,好,那我們來重構下formbean和action吧,以下我們用BaseForm,及
BaseAction來定義,兩個類都放在同一個包中































































到此算為結束,可能有為會問,那還有response呢,response的話,一般出現在內部跳轉等情況,感覺用
的比較少,所以在此就不把它給大家了,如覺得一定要得到的話,那就跟request一樣進行設置吧,不過
萬事都應該有個度,自己衡量。