@Result(location = "simpleecho.jsp", name = "success"), @Result(location = "simpleecho.jsp", name = "input")
})
})
鏄粈涔堟剰鎬濓紵灝ゅ叾鏄浜屼釜@Result
鍐欐垚閰嶇疆鏂囦歡褰㈠紡璇ユ庝箞鍐欏憿錛?
]]>
Struts2妗嗘灦浣跨敤鏍囧噯鍛藉悕涓婁笅鏂囨潵浣跨敤OGNL琛ㄨ揪寮忥紝OGNL琛ㄨ揪寮忓鐞嗙殑欏跺眰瀵硅薄鏄疢ap錛堥氬父琚О涓轟笂涓嬫枃Map鎴栦笂涓嬫枃錛夈侽GNL璁や負鍦ㄥ簲鐢ㄤ笂涓嬫枃涓湁涓涓牴瀵硅薄錛堟垨榛樿瀵硅薄錛夈傚嵆涓嶉渶瑕佷嬌鐢ㄤ換浣曠壒孌婄殑鏍囪灝辮兘澶熻幏寰楁牴瀵硅薄涓殑灞炴э紝濡傛灉瑕佽幏寰楀叾浠栫殑瀵硅薄錛屽垯闇瑕佷嬌鐢ㄦ爣璁?銆?br /> Struts2妗嗘灦鎶奜GNL context浣滀負鎴戜滑鐨凙ctionContext錛屽茍涓旀妸鍊兼爤錛圴alueStack錛変綔涓篛GNL鐨勬牴瀵硅薄錛圴alueStack鏄涓璞＄殑闆嗗悎錛屼絾鏄OGNL鏉ヨ錛屽畠鏄竴涓崟涓鐨勫璞★級銆傛鏋舵妸鍏朵粬瀵硅薄鍜孷alueStack涓璧鋒斁鍒癆ctionContext涓紝鍖呮嫭灞曠幇application銆乻ession鍜宺equest 涓婁笅鏂囩殑Maps錛岃繖浜涘璞″悓ValueStack涓璧鳳紝鍏卞悓瀛樺湪浜嶢ctionContext涓?br />
|
|--application
|
|--session
context map---|
|--value stack(root)
|
|--request
|
|--parameters
|
|--attr (searches page, request, session, then application scopes)
|
Action瀹炰緥鎬繪槸琚斁鍏alueStack涓紝鍥犱負Action鍦╲s涓紝騫朵笖vs鏄疧GNL鐨勬牴瀵硅薄錛屾墍浠ュ湪璁塊棶Action鐨勫睘鎬ф椂鍙互蹇界暐“ # ”鏍囪銆備絾鏄紝鍦ㄨ闂瓵ctionContext涓殑鍏朵粬瀵硅薄鏃跺繀欏昏浣跨敤“#”錛岃繖鏍稯GNL鎵嶈兘鐭ラ亾鎴戜滑鎯寵璁塊棶鐨勬槸Actioncontext涓殑鍏朵粬瀵硅薄錛岃屼笉鍘繪牴瀵硅薄涓煡鎵俱?br />
| 璁塊棶Action涓殑涓涓睘鎬?/td> |
| <s:property value="postalCode"/> |
Actioncontext涓殑鍏朵粬闈炴牴瀵硅薄灞炴э紝鍙互鐢?#8220;#”鏍囪鏉ヨ幏寰椼?br /> <s:property value="#session.mySessionPropKey"/> or
<s:property value="#session['mySessionPropKey']"/> or
<s:property value="#request['myRequestPropKey']"/>
鍚屾牱Action鍙互閫氳繃涓涓潤鎬佺殑鏂規硶鏉ヨ幏鍙朅ctionContext錛?br /> Actioncontext.getContext();
ActionContext.getContext().getSession().put("mySessionPropKey", mySessionObject);
Collections (Maps, Lists, Sets)
鍦ㄦ鏋朵腑浼氱粡甯擱亣鍒板鐞嗛泦鍚?nbsp;Collections (Maps, Lists, and Sets), 涓嬮潰鍒楀嚭鍑犱釜浣跨敤select 鏍囩澶勭悊闆嗗悎鐨勫垪瀛? OGNL documentation 涔熷寘鎷澶氬垪瀛?
Syntax for list: {e1,e2,e3}. 榪欎釜璇硶鍒涘緩浜嗕竴涓寘鍚瓧絎︿覆“name1”錛?#8220;name2”鍜?#8220;name3”鐨凩ist錛屽茍涓旈夋嫨“name2”浣滀負榛樿鍊箋?br />
<s:select label="label" name="name" list="{'name1','name2','name3'}" value="%{'name2'}" />
Syntax for map: #{key1:value1,key2:value2}. 榪欎釜璇硶鍒涘緩浜嗕竴涓狹ap閿煎闆嗗悎錛?#8220;foo”瀵瑰簲“foovalue”錛?#8220;bar”瀵瑰簲“barvalue”錛?br />
<s:select label="label" name="name" list="#{'foo':'foovalue', 'bar':'barvalue'}" />
鍒ゆ柇涓涓厓绱犳槸鍚﹀瓨鍦ㄤ簬涓涓泦鍚堜腑錛屼嬌鐢╥n 鎴?not in 鎿嶄綔銆?br />
<s:if test="'foo' in {'foo','bar'}">
muhahaha
</s:if>
<s:else>
boo
</s:else>
<s:if test="'foo' not in {'foo','bar'}">
muhahaha
</s:if>
<s:else>
boo
</s:else>
閫夋嫨闆嗗悎鐨勪竴涓瓙闆嗭紙涔熷彨鎶曞獎錛夛紝鍙互浣跨敤閫氶厤絎︼細
渚嬪錛岃幏寰椾漢鐨勪翰灞為泦鍚堜腑涓虹敺鎬х殑涓涓瓙闆?/p>
person.relatives.{? #this.gender == 'male'}
Lambda Expressions
OGNL supports basic lamba expression syntax enabling you to write simple functions.
(Dedicated to all you math majors who didn't think you would ever see this one again.)
Fibonacci: if n==0 return 0; elseif n==1 return 1; else return fib(n-2)+fib(n-1);
fib(0) = 0
fib(1) = 1
fib(11) = 89
How the expression works
The lambda expression is everything inside the square brackets. The #this variable holds the argument to the expression, which in the following example is the number 11 (the code after the square-bracketed lamba expression, #fib(11)).
<s:property value="#fib =:[#this==0 ? 0 : #this==1 ? 1 : #fib(#this-2)+#fib(#this-1)], #fib(11)" />
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