Tapestry

     摘要: tapestry的URL形如/examples/app?service=page/Admin
能夠保證有效運行的一個非常重要的原因是，用有狀態的javabean代替無狀態的servlet構建一個tapestry應用。page是有狀態的，他只能在一個線程里為一個用戶處理一個 request，而一個servelet，沒有用戶的狀態，可以在并發線程中為任何數量同時發生的request提供服務。使用有狀態的page遇到的問題和使用數據庫的連接遇到的問題非常相似  閱讀全文

http://www.javaeye.com/t/4463.html

<img jwcid="@Any" src="images/btn2.gif" onClick="ognl:yourScriptFun"/>

from http://dengyin2000.javaeye.com/blog/47452


a) @Persist("client")
b) @Persist("client:page")
c) @Persist("client:app")

a) is the same as b). If you use b) for a property x for page Foo, then
you can get back the property only if the navigation is Foo => Foo. If the
navigation is Foo => Bar => Foo, then it will be lost when Bar is
invoked. In contrast, if you use c), then it will be maintained all
the way.

client 跟 session是一樣的效果只是實現的方式不一樣， 一個是存在cookie或url中另一個是存在http session中。

client:page session:page 僅在當前頁面有用， 假如轉到其他頁面 這個屬性值就失效了。
client:app session:app 對于整個application都有效， 轉到其他頁面再轉回來的話這個值仍然存在。如果我們想讓他失效怎么辦呢？你可以調用這個方法cycle.forgetPage("YourPageName").

     摘要: All interactive programs provide two basic functions: obtaining user input and displaying the results. Web applications implement this behavior using two HTTP methods: POST and GET respectively. This simple protocol gets broken when application returns web page in response to POST request. Peculiarities of POST method combined with idiosyncrasies of different browsers often lead to unpleasant user experience and may produce incorrect state of server application. This article shows how to design   閱讀全文

     摘要: http://ralf-realman.javaeye.com/blog/post/144266  閱讀全文

     摘要: Tapestry的rewind一直是學習和使用Tapestry的難點，rewind是用來處理表單提交的，表單默認使用的是 DirectService來提交。在詳細介紹之前，先說明下此文中需要用到的一些概念，首先是表單組件，我這里指的是指繼承自 AbstractFormComponent類的組件，例如：TextField、TextArea、Checkbox等，而不是具體的Form組件，表單組件使用時必須在Form組件中，這些組件在rewind時調用繼承自AbstractFormComponent的 rewindFormComponent來讀取數據，并將數據賦值給容器或者頁面。
我們來看一下最簡單的TextField組件，組件定義如下   閱讀全文

     摘要: 1. iframe所引用的頁面類實現IExternalPage接口和activateExternalPage方法

2. 持有iframe的頁面類中實現一個getIframeRenderer方法:  閱讀全文

I've added a new screencast, this one showing off the use of the tapestry-simple Maven archetype to create a new project. It runs about five minutes and shows off how simple it is to get up and running.

If you haven't built Tapestry 5 locally, you need to remember to add -DremoteRepositories=http://people.apache.org/repo/m2-snapshot-repository/ to the command line.

I'm thinking about starting a vote to do a preview release of Tapestry 5, just to get the necessary JARs and archetypes into the general Maven repository.

     摘要: Tapestry中表單的提交有很多問題，刷新導致表單的重復提交、臭名昭著的dirty form warning、
顯示不友好的URL等，這些都可以使用redirect-after-postpostredirectredirectredirectPagefriendlyUrlurl

要使用這個模式，不得不提到一個ILinkT4listener:
  閱讀全文

     摘要: The toolkit known as GWT is all about creating dynamic client side javascript widgets and applications. The intriguing part of the toolkit is that these "scripty" bits are written as normal Java source code and are transcoded by the GWT compiler into relatively small and efficient javascript code. A "hosted" environment is provided by the toolkit which embeds a browser where developers can load their GWT enabled pages during development. When a page is loaded into this embedded browser, the GWT   閱讀全文