關(guān)鍵字: jsp <
jsp-config>
<jsp-config>
包括
<taglib>
和
<jsp-property-group>
兩個(gè)子元素。其中<taglib>
元素在JSP 1.2
時(shí)就已經(jīng)存在；而<jsp-property-group>
是JSP 2.0
新增的元素。<jsp-property-group>
元素主要有八個(gè)子元素，它們分別為：
1.<description>：設(shè)定的說(shuō)明
2.<display-name>：設(shè)定名稱
3.<url-pattern>：設(shè)定值所影響的范圍，如：
/CH2 或
/*.jsp
4.<el-ignored>：若為
true，表示不支持
EL 語(yǔ)法
5.<scripting-invalid>：若為
true，表示不支持
<% scripting %>語(yǔ)法
6.<page-encoding>：設(shè)定
JSP 網(wǎng)頁(yè)的編碼
7.<include-prelude>：設(shè)置
JSP 網(wǎng)頁(yè)的抬頭，擴(kuò)展名為
.jspf
8.<include-coda>：設(shè)置
JSP 網(wǎng)頁(yè)的結(jié)尾，擴(kuò)展名為
.jspf
一個(gè)簡(jiǎn)單的<jsp-config>
元素完整配置：
- <jsp-config>
- <taglib>
- <taglib-uri>Taglib</taglib-uri>
- <taglib-location>/WEB-INF/tlds/MyTaglib.tld</taglib-location>
- </taglib>
- <jsp-property-group>
- <description>Special property group for JSP Configuration JSP example.</description>
- <display-name>JSPConfiguration</display-name>
- <url-pattern>/jsp/* </url-pattern>
- <el-ignored>true</el-ignored>
- <page-encoding>GB2312</page-encoding>
- <scripting-invalid>true</scripting-invalid>
- <include-prelude>/include/prelude.jspf</include-prelude>
- <include-coda>/include/coda.jspf</include-coda>
- </jsp-property-group>
- </jsp-config>
<jsp-config>
<taglib>
<taglib-uri>Taglib</taglib-uri>
<taglib-location>/WEB-INF/tlds/MyTaglib.tld</taglib-location>
</taglib>
<jsp-property-group>
<description>Special property group for JSP Configuration JSP example.</description>
<display-name>JSPConfiguration</display-name>
<url-pattern>/jsp/* </url-pattern>
<el-ignored>true</el-ignored>
<page-encoding>GB2312</page-encoding>
<scripting-invalid>true</scripting-invalid>
<include-prelude>/include/prelude.jspf</include-prelude>
<include-coda>/include/coda.jspf</include-coda>
</jsp-property-group>
</jsp-config>
對(duì)于Web
應(yīng)用程式來(lái)說(shuō)，Scriptlet
是個(gè)不樂(lè)意被見(jiàn)到的東西，因?yàn)樗鼤?huì)使得HTML
與Java
程式碼交相混雜，對(duì)于程式的維護(hù)來(lái)說(shuō)相當(dāng)?shù)穆闊匾臅r(shí)候，您可以在web.xml
中加上<script-invalid>
標(biāo)簽，設(shè)定所有的JSP
網(wǎng)頁(yè)都不可以使用Scriptlet
，例如：
- <web-app ..>
- ....
- <jsp-config>
- <jsp-property-group>
- <url-pattern>*.jsp</url-pattern>
- <script-invalid>true</script-invalid>
- </jsp-property-group>
- </jsp-config>
- ....
- </web-app>
<web-app ..>
....
<jsp-config>
<jsp-property-group>
<url-pattern>*.jsp</url-pattern>
<script-invalid>true</script-invalid>
</jsp-property-group>
</jsp-config>
....
</web-app>
原文地址：http://janwer.javaeye.com/blog/150217