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JavaWeb -- Struts2 ResultType细化, 国际化

2014-01-15 09:40 309 查看

1. ResultType细化

<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" />
</result-types>

示例action

/**
* ResultTypeAction
*/
public class ResultTypeAction extends ActionSupport {
private static final long serialVersionUID = -6933309304624396640L;

private String name = "中文" ;

private String saveFileName ;

/**
* 只能请求转发到jsp或者是servlet.
*/
public String dispatcher() {
System.out.println("dispatcher");

return "dispatcher";
}

/**
* 重定向到任意的url.
*/
public String redirect() {
System.out.println("redirect");
return "redirect";
}

/**
* 重定向action的好处在于不需要硬编码url地址,即不需要绑定url模式.只能重定向到当前应用中的
* 某个action.
*/
public String redirectAction() {
System.out.println("redirectAction");
return "redirectAction";
}

/**
* 得到输入流
* @throws FileNotFoundException
*/
public InputStream getIs() throws FileNotFoundException{
return new FileInputStream("d:/sunset.jpg");
}

/**
* 下载
*/
public String stream(){
try {
saveFileName = URLEncoder.encode("日落", "UTF-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return "stream" ;
}

/**
* 链化action,请求转发到另外一个action,在同一个线程中,数据共享
*/
public String chain(){
System.out.println("chain");
return "chain" ;
}

/**
* 输出纯文本
*/
public String plainText(){
System.out.println("plainText");
return "plainText" ;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public String getSaveFileName() {
return saveFileName;
}

public void setSaveFileName(String saveFileName) {
this.saveFileName = saveFileName;
}
}

struts配置文档 rt.xml

<?xml version="1.0"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.1.7//EN"
"http://struts.apache.org/dtds/struts-2.1.7.dtd">
<struts>
<package name="RtPkg" namespace="/rt" extends="struts-default">
<action name="ResultTypeAction_*" class="cn.itcast.struts2.resulttype.ResultTypeAction" method="{1}">
<result name="dispatcher" type="dispatcher">/login.jsp</result>
<!--调用action中的数据 用 ${...}-->
<result name="redirect" type="redirect">/ui/UiAction_saveData.do?name=${name}</result>
<result name="redirectAction" type="redirectAction">
<param name="actionName">UiAction_saveData</param>
<param name="namespace">/ui</param>
<param name="name">${name}</param>
<param name="age">20</param>
</result>
<result name="stream" type="stream">
<param name="contentType">image/jpeg</param>
<param name="contentDisposition">
attachment;filename="${@java.net.URLEncoder@encode('日落', 'UTF-8')}.jpg"
</param>
<param name="inputName">is</param>
</result>
<result name="chain" type="chain">
<param name="actionName">UiAction_saveData</param>
<param name="namespace">/ui</param>
</result>
<result name="plainText" type="plainText">
<param name="location">/ipmsg.log</param>
<param name="charSet">GBK</param>
</result>
</action>
</package>
</struts>

2. 国际化

显示页面

<%@ page language="java" contentType="text/html; charset=utf-8"%>
<%@taglib uri="/struts-tags" prefix="s"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>reg.jsp</title>
</head>
<body>
<s:form namespace="/i18n" action="I18nAction_toRegView" method="post" theme="xhtml">
<!--国际化显示语言选择-->
<s:select name="request_locale"
list="#{@java.util.Locale@CHINA:@java.util.Locale@CHINA.getDisplayName(@java.util.Locale@CHINA),
@java.util.Locale@TAIWAN:@java.util.Locale@TAIWAN.getDisplayName(@java.util.Locale@TAIWAN),
@java.util.Locale@US:@java.util.Locale@US.getDisplayName(@java.util.Locale@US),
@java.util.Locale@UK:@java.util.Locale@UK.getDisplayName(@java.util.Locale@UK),
@java.util.Locale@JAPAN:@java.util.Locale@JAPAN.getDisplayName(@java.util.Locale@JAPAN)}"
listKey="key"
listValue="value"
onchange="this.form.submit();"
value="locale">
</s:select>
<!--国际化显示 提示信息-->
<s:textfield name="name" key="label.name" />
<s:submit />
</s:form>
</body>
</html>

语言资源文件放在action同目录下，命名格式 action同名 + 国家代码 + 语言代码

I18nAction_zh_CN.properties

label.name=userName_zh_CN

I18nAction_en_US.properties

label.name=userName_en_US

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