Struts2 Result Type

struts2-core-2.0.11.jar中的struts-default.xml里定义了type，如下:

<result-types>
<result-type name="chain" class="com.opensymphony.xwork2.ActionChainResult"/>
<result-type name="dispatcher" class="org.apache.struts2.dispatcher.ServletDispatcherResult" default="true"/>
<result-type name="freemarker" class="org.apache.struts2.views.freemarker.FreemarkerResult"/>
<result-type name="httpheader" class="org.apache.struts2.dispatcher.HttpHeaderResult"/>
<result-type name="redirect" class="org.apache.struts2.dispatcher.ServletRedirectResult"/>
<result-type name="redirectAction" class="org.apache.struts2.dispatcher.ServletActionRedirectResult"/>
<result-type name="stream" class="org.apache.struts2.dispatcher.StreamResult"/>
<result-type name="velocity" class="org.apache.struts2.dispatcher.VelocityResult"/>
<result-type name="xslt" class="org.apache.struts2.views.xslt.XSLTResult"/>
<result-type name="plainText" class="org.apache.struts2.dispatcher.PlainTextResult"/>
<!-- Deprecated name form scheduled for removal in Struts 2.1.0. The camelCase versions are preferred. See ww-1707 -->
<result-type name="redirect-action" class="org.apache.struts2.dispatcher.ServletActionRedirectResult"/>
<result-type name="plaintext" class="org.apache.struts2.dispatcher.PlainTextResult"/>
</result-types>





chain
    用来处理Action链
    com.opensymphony.xwork2.ActionChainResult

dispatcher
    用来转向页面，通常处理JSP，可以看出是type的默认值
    org.apache.struts2.dispatcher.ServletDispatcherResult

freemaker
    处理FreeMarker模板
    org.apache.struts2.views.freemarker.FreemarkerResult

httpheader
    控制特殊HTTP行为的结果类型
    org.apache.struts2.dispatcher.HttpHeaderResult

redirect
    重定向到一个URL
    org.apache.struts2.dispatcher.ServletRedirectResult

redirectAction
    重定向到一个Action
    org.apache.struts2.dispatcher.ServletActionRedirectResult

stream
    向浏览器发送InputSream对象，通常用来处理文件下载，还可用于返回AJAX数据，读取数据库中blob类型的图片。
    org.apache.struts2.dispatcher.StreamResult

velocity
    处理Velocity模板
    org.apache.struts2.dispatcher.VelocityResult

xslt
    处理XML/XLST模板
    org.apache.struts2.views.xslt.XSLTResult

plainText
    显示原始文件内容，例如文件源代码(例如 jsp, html 等)
    org.apache.struts2.dispatcher.PlainTextResult

redirect-action
    重定向到一个Action
    org.apache.struts2.dispatcher.ServletActionRedirectResult

plaintext
    显示原始文件内容，例如文件源代码
    org.apache.struts2.dispatcher.PlainTextResult