Struts2 基本的ResultType 【学习笔记】

在struts2-core.jar/struts-default.xml中,我们可以找到关于result-type的一些配置信息,从中可以看出struts2组件默认为我们提供了这 
些result-type 
       <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>

 

其中

dispatcher     返回jsp

struts.xml

 

<action name="*_*" class="cn.happy.action.{1}" method="{2}">
    <result name="{2}">
                /{1}/{2}.jsp
        </result>
</action>        

 

默认的模式 无需特殊指定result节点中的type属性

 

 

chain    实现从一个Action方法A跳转到另一个方法B

struts.xml

<!-- chain 转发到另一个Action-->
        <action name="userAction" class="sword.action.UserAction" method="list">
            <result name="list" type="chain">
                <param name="actionName">userActionDel</param>
                <param name="namespace">/</param>
            </result>
        </action>

        <action name="userActionDel" class="sword.action.UserAction" method="del">
            <result name="del">
                /del.jsp
            </result>
        </action>

Action

public class LogAction extends ActionSupport {
    private String uname;
    private String pwd;

    public String log() throws Exception {

        return "log";
    }

jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
    这是del
</body>
</html>

最后地址栏的地址没有变化 请求到了list方法后 转发到了del方法 最后回到了jsp页面

 

posted on 2017-03-02 16:49  天天天命  阅读(117)  评论(0编辑  收藏  举报

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