📄 入門 04 - hellostruts - 組態與視圖 - javaworld@tw.htm
字号:
style="BORDER-BOTTOM-STYLE: solid"><B>struts-config.xml</B></DIV>
<DIV class=codeContent><PRE><?xml version=<SPAN class=java-quote>"1.0"</SPAN> encoding=<SPAN class=java-quote>"ISO-8859-1"</SPAN> ?>
<!DOCTYPE struts-config PUBLIC
<SPAN class=java-quote>"-<SPAN class=java-comment>//Apache Software Foundation//DTD Struts Configuration 1.1//EN"</SPAN></SPAN>
<SPAN class=java-quote>"http:<SPAN class=java-comment>//jakarta.apache.org/struts/dtds/struts-config_1_1.dtd"</SPAN>></SPAN>
<struts-config>
<global-forwards>
<forward
name=<SPAN class=java-quote>"welcome"</SPAN>
path=<SPAN class=java-quote>"/Welcome.<SPAN class=java-keyword>do</SPAN>"</SPAN>/>
</global-forwards>
<action-mappings>
<action
path=<SPAN class=java-quote>"/Welcome"</SPAN>
type=<SPAN class=java-quote>"org.apache.struts.actions.ForwardAction"</SPAN>
parameter=<SPAN class=java-quote>"/pages/Welcome.jsp"</SPAN>/>
</action-mappings>
<message-resources parameter=<SPAN class=java-quote>"resources.application"</SPAN>/>
</struts-config></PRE></DIV></DIV><BR> <global-forward>提供一個全局可查找的forward對象，在Struts的組態中，我們可以為每一個<
action>標籤指定其forward對象，如果在<action>中查找不到，就會至<global-
forward>中查找，對於一些共同使用的forward對象，您可以集中於<global-forward>中管理。<BR> 在<action-mappings>中用於設定請求的URI與Action物件的對應，也就是什麼樣的路徑請求該使用哪一個
Action物件來處理，每一個<action>標籤的設定對應於一個ActionMapping物件，path路徑設定為Welcome表示Welcome.do的請求將由type所設定的物件來處理，ForwardAction單純的將請求forward至另一個對象，forward的對象則是parameter所設定的對象，透過ForwardAction的轉發，我們可以避免直接請求一個資源的真正位址，而使得所有的請求都可以先經過控制器ActionServlet來進行調度。<BR> <message-resources>用於設定我們的訊息資源檔，parameter中的設定表示我們將使用WEB-
INF/classes/resources目錄中application為開頭的資源檔案，預設將讀取application.properties，根據區域設定的不同，可以讀取不同的區域化訊息資源檔案。<BR>接下來我們準備index.jsp，如下：
<DIV class=code
style="BORDER-TOP-STYLE: solid; BORDER-RIGHT-STYLE: solid; BORDER-LEFT-STYLE: solid; BORDER-BOTTOM-STYLE: solid">
<DIV class=codeHeader
style="BORDER-BOTTOM-STYLE: solid"><B>index.jsp</B></DIV>
<DIV class=codeContent><PRE><%@ taglib uri=<SPAN class=java-quote>"/tags/struts-logic"</SPAN> prefix=<SPAN class=java-quote>"logic"</SPAN> %>
<logic:redirect forward=<SPAN class=java-quote>"welcome"</SPAN>/></PRE></DIV></DIV><BR> <logic:redirect>標籤會查找struts-config.xml中的<global-forward>
標籤中是否設定有"welcome"的forward對象，並使用redirect的方式重新導向至指定的路徑，我們之前已經在web.xml中設定了
<welcome-file>為index.jsp，所以當有人請求根目錄時，將會以index.jsp的內容回應，而根據
index.jsp與<global-forward>的設定，請求將會被重新導向至Welcome.do，而ActionServlet會根據<action-mappings>中的設定，將請求forward至pages/Welcome.jsp，由於使用forward的方式，所以動作是在容器內進行的，瀏覽器並不知道這件事，因而瀏覽器的網址列並不會改變，仍然顯示Welcome.do。<BR> Welcome.jsp的內容如下：
<DIV class=code
style="BORDER-TOP-STYLE: solid; BORDER-RIGHT-STYLE: solid; BORDER-LEFT-STYLE: solid; BORDER-BOTTOM-STYLE: solid">
<DIV class=codeHeader
style="BORDER-BOTTOM-STYLE: solid"><B>Welcome.jsp</B></DIV>
<DIV class=codeContent><PRE><%@ taglib uri=<SPAN class=java-quote>"/tags/struts-bean"</SPAN> prefix=<SPAN class=java-quote>"bean"</SPAN> %>
<%@ taglib uri=<SPAN class=java-quote>"/tags/struts-html"</SPAN> prefix=<SPAN class=java-quote>"html"</SPAN> %>
<%@page contentType=<SPAN class=java-quote>"text/html; charset=Big5"</SPAN>%>
<html:html locale=<SPAN class=java-quote>"<SPAN class=java-keyword>true</SPAN>"</SPAN>>
<head>
<title><bean:message key=<SPAN class=java-quote>"welcome.title"</SPAN>/></title>
<html:base/>
</head>
<body bgcolor=<SPAN class=java-quote>"white"</SPAN>>
<H1><bean:message key=<SPAN class=java-quote>"welcome.message"</SPAN>/></H1>
</body>
</html:html></PRE></DIV></DIV><BR> 這邊使用了<html:html>標籤與<bean:message>標籤，標籤的使用方式是顯而易見、不難理解的，其中<bean:message>的key比對來源就是我們的訊息資源檔，也就是application.properties，如果您有設定中文訊息檔的話就是application_zh.properties，您可以使用http://localhost:
8080/HelloStruts/來瀏覽，最後網址列會變成http://localhost:
8080/HelloStruts/Welcome.do，而Welcome.jsp所產生的HTML原始碼如下：
<DIV class=code
style="BORDER-TOP-STYLE: solid; BORDER-RIGHT-STYLE: solid; BORDER-LEFT-STYLE: solid; BORDER-BOTTOM-STYLE: solid">
<DIV class=codeContent><PRE><html lang=<SPAN class=java-quote>"zh"</SPAN>>
<head>
<title>哈囉！Struts！</title>
<base href=<SPAN class=java-quote>"http:<SPAN class=java-comment>//localhost:8080/HelloStruts/pages/Welcome.jsp"</SPAN>></SPAN>
</head>
<body bgcolor=<SPAN class=java-quote>"white"</SPAN>>
<H1>這是您的第一個Struts！</H1>
</body>
</html></PRE></DIV></DIV><!-- page content ends --><!--<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/"><rdf:Description rdf:about="http://www.javaworld.com.tw/confluence/pages/viewpage.action?pageId=237" dc:identifier="http://www.javaworld.com.tw/confluence/pages/viewpage.action?pageId=237" dc:title="入門 04 - HelloStruts - 組態與視圖" trackback:ping="http://www.javaworld.com.tw/confluence/rpc/trackback/237"/></rdf:RDF>-->
<P>
<DIV class=greybox><IMG height=16
src="入門 04 - HelloStruts - 組態與視圖 - JAVAWORLD@TW.files/comment_16.gif"
width=16 align=absMiddle border=0> 0 comments | <A
href="http://www.javaworld.com.tw/confluence/pages/viewpage.action?pageId=237&showComments=true#addcomment"><IMG
height=16
src="入門 04 - HelloStruts - 組態與視圖 - JAVAWORLD@TW.files/add_comment_16.gif"
width=16 align=absMiddle border=0></A> <A
href="http://www.javaworld.com.tw/confluence/pages/viewpage.action?pageId=237&showComments=true#addcomment">Add
Comment</A> </DIV></TD>
<TD width=5> </TD>
<TD vAlign=top width="25%">
<DIV class=navmenu>
<DIV class=menuheading>Page Operations</DIV>
<DIV class=menuitems>
<DIV class=operations>
<UL>
<LI><A accessKey=i
href="http://www.javaworld.com.tw/confluence/pages/pageinfo.action?pageId=237"><IMG
title="Page Information" height=16
src="入門 04 - HelloStruts - 組態與視圖 - JAVAWORLD@TW.files/about_16.gif"
width=16 align=absMiddle border=0></A><SPAN class=label> <A
href="http://www.javaworld.com.tw/confluence/pages/pageinfo.action?pageId=237">Page
Information</A></SPAN>
<LI><A
href="http://www.javaworld.com.tw/confluence/pages/viewpreviousversions.action?pageId=237"><IMG
title="Page History" height=16
src="入門 04 - HelloStruts - 組態與視圖 - JAVAWORLD@TW.files/history_16.gif"
width=16 align=absMiddle border=0></A><SPAN class=label> <A
href="http://www.javaworld.com.tw/confluence/pages/viewpreviousversions.action?pageId=237">Page
History</A></SPAN> </LI></UL>
<UL>
<LI><A
href="http://www.javaworld.com.tw/confluence/display/opensrc/Home"><IMG
title="Space Homepage" height=16
src="入門 04 - HelloStruts - 組態與視圖 - JAVAWORLD@TW.files/home_16.gif"
width=16 align=absMiddle border=0></A><SPAN class=label> <A
href="http://www.javaworld.com.tw/confluence/display/opensrc/Home">Space
Homepage</A></SPAN>
<LI><A
href="http://www.javaworld.com.tw/confluence/spaces/viewspacesummary.action?key=opensrc"><IMG
title="Space Summary" height=16
src="入門 04 - HelloStruts - 組態與視圖 - JAVAWORLD@TW.files/web_16.gif"
width=16 align=absMiddle border=0></A><SPAN class=label> <A
href="http://www.javaworld.com.tw/confluence/spaces/viewspacesummary.action?key=opensrc">Space
Summary</A></SPAN> </LI></UL></DIV>
<P>
<DIV class=infopanel-heading>Incoming Links: <SPAN
class=smallfont>(<A
href="http://www.javaworld.com.tw/confluence/pages/pageinfo.action?pageId=237#incoming">more</A>)</SPAN>
</DIV><IMG title=Struts入門 height=16
src="入門 04 - HelloStruts - 組態與視圖 - JAVAWORLD@TW.files/docs_16.gif"
width=16 align=absMiddle border=0> <A
href="http://www.javaworld.com.tw/confluence/pages/viewpage.action?pageId=1958">Struts入門</A>
<BR>
<P></P>
<P>
<DIV class=infopanel-heading>Hot Referrers: <SPAN
class=smallfont>(<A
href="http://www.javaworld.com.tw/confluence/pages/pageinfo.action?pageId=237#referers">more</A>)</SPAN>
</DIV><SPAN class=smallerfont><A
title=http://140.138.150.106/confluence/pages/viewpage.action?pageId=1958
href="http://140.138.150.106/confluence/pages/viewpage.action?pageId=1958">140.138.150.106/confluence/pa...</A>
(35) <BR><A
title=http://140.138.150.106/confluence/pages/listpages-dirview.action?key=opensrc
href="http://140.138.150.106/confluence/pages/listpages-dirview.action?key=opensrc">140.138.150.106/confluence/pa...</A>
(34) <BR><A
title=http://140.138.150.106/confluence/pages/viewpage.action?pageId=237
href="http://140.138.150.106/confluence/pages/viewpage.action?pageId=237">140.138.150.106/confluence/pa...</A>
(28) <BR><A
title=http://www.jsptw.com/confluence/pages/viewpage.action?pageId=1958
href="http://www.jsptw.com/confluence/pages/viewpage.action?pageId=1958">http://www.jsptw.com/confluence/pages/viewpage.action?pageId=1958</A>
(27) <BR><A
title=http://javaworld.com.tw/confluence/pages/viewpage.action?pageId=1958
href="http://javaworld.com.tw/confluence/pages/viewpage.action?pageId=1958">javaworld.com.tw/confluence/p...</A>
(7) <BR><A
title=http://140.138.150.106/confluence/pages/viewpage.action?pageId=237&showComments=true
href="http://140.138.150.106/confluence/pages/viewpage.action?pageId=237&showComments=true">140.138.150.106/confluence/pa...</A>
(7) <BR><A
title=http://140.138.150.106/confluence/pages/viewpage.action?pageId=237&showComments=false
href="http://140.138.150.106/confluence/pages/viewpage.action?pageId=237&showComments=false">140.138.150.106/confluence/pa...</A>
(7) <BR><A
title=http://www.google.co.jp/search?hl=zh-CN&ie=UTF-8&q=+Location%3A+Dashboard+%3E+J2EE+%3E+Pages+%3E+Home+%3E+JSP+%3E+JSP%E5%85%A5%E9%96%80+%3E+JSP+Servlet+Filter-1+&btnG=Google%E6%90%9C%E7%B4%A2&lr=lang_zh-CN
href="http://www.google.co.jp/search?hl=zh-CN&ie=UTF-8&q=+Location%3A+Dashboard+%3E+J2EE+%3E+Pages+%3E+Home+%3E+JSP+%3E+JSP%E5%85%A5%E9%96%80+%3E+JSP+Servlet+Filter-1+&btnG=Google%E6%90%9C%E7%B4%A2&lr=lang_zh-CN">Google:
Location: Dashboard ...</A> (3) <BR><A
title=http://140.138.150.106/confluence/pages/viewpage.action?pageId=237&decorator=printable
href="http://140.138.150.106/confluence/pages/viewpage.action?pageId=237&decorator=printable">140.138.150.106/confluence/pa...</A>
(2) <BR><A
title=http://www.javaworld.com.tw/jute/post/view?bid=24&id=61170&tpg=1&ppg=1&sty=1
href="http://www.javaworld.com.tw/jute/post/view?bid=24&id=61170&tpg=1&ppg=1&sty=1">http://www.javaworld.com.tw/jute/post/view?bid=24&id=61170&tpg=1&ppg=1&sty=1</A>
(1) <BR></SPAN>
<P></P></DIV></DIV>
<DIV></DIV></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></DIV>
<DIV class=license-nonprofit>This site is running on Atlassian <B><A
href="http://www.atlassian.com/c/conf/10137">Confluence</A></B> with a free
<B>Open Source Project / Non-profit License</B> (<A
href="http://www.atlassian.com/c/conf/10138">license details</A>).<BR><A
href="http://www.atlassian.com/c/conf/10137">Confluence</A> is professional
wiki, blog and knowledge management tool. <A
href="http://www.atlassian.com/c/conf/10137">Evaluate Confluence for your
organisation</A>.<BR></DIV>
<DIV class=bottomshadow></DIV>
<DIV class=smalltext id=poweredby>Powered by <A class=smalltext
href="http://www.atlassian.com/software/confluence/default.jsp?clicked=footer">Atlassian
Confluence</A> (Version: 1.3.5 Build:#122 Mar 01, 2005) - <A class=smalltext
href="http://jira.atlassian.com/secure/BrowseProject.jspa?id=10470">Bug/feature
request</A> - <A
href="http://www.javaworld.com.tw/confluence/administrators.action">Contact
Administrators</A> <BR></DIV></BODY></HTML>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -