Struts2 笔记

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转自：http://blog.csdn.net/jingmin/archive/2009/03/31/4039336.aspx

一、生成一个地址
<s:url action="list" id="list"></s:url>

<s:a href="%{list}">list</s:a>

二、 struts 常用配置
struts.properties 常用配置文件

<constant name="struts.i18n.encoding" value="UTF-8" />字符集

<constant name="struts.convention.action.packages" value="cn.jingmin.web" /> 只搜索特定package下的Action

<constant name="struts.convention.result.path" value="/WEB-INF/context" /> 指定加载页面的目录

<constant name="struts.convention.relative.result.types" value="dispatcher,velocity,freemarker" />返回的页面类型

<constant name="struts.convention.exclude.packages" value="" />忽略某些包

<constant name="struts.convention.package.locators" value="" /> Convention默认的根packages

<constant name="struts.objectFactory" value="spring" /> 指定spring自动装载

<constant name="struts.action.extension" value="action" /> 指定struts的扩展名

<constant name="struts.devMode" value="true" /> 指定struts的开发模式

<constant name="struts.i18n.reload" value="action" /> 指定struts的资源文件自动重载

<constant name="struts.custom.i18n.resource" value="" /> 指定struts的国际化资源文件

<constant name="struts.configuration.xml.reload" value="" /> 指定struts的配置文件是否自动重载

<constant name="struts.ul.theme" value="xthml" /> 指定struts的模板

三、 convention action与文件的对应关系
public class HelloWorld extends ActionSupport

{

publicString execute() {

if (System.currentTimeMillis() % 2 == 0) {

message = "It's 0";

return"zero"; }

return SUCCESS;

}}

SUCCESS 对应 hello-world.jsp

zero 对应 hello-world-zero.jsp

四、 convention action对过虑器的调用
@Action(interceptorRefs={@InterceptorRef("validation"), @InterceptorRef("defaultStack")})

@ExceptionMappings({

@ExceptionMapping(exception = "java.lang.NullPointerException", result = "success", params = {"param1", "val1"})

})

@ParentPackage

五、 Convention插件使用REST
----------------------------------------------------------------------------

六、 sitemesh 引用变量
在第主个页面之中

在模板页中可以引用

<decorator:getProperty property="meta.author" default="staff@example.com" />

七、 OpenSessionInViewFilter连接设置
<filter>

<filter-name>hibernateOpenSessionInViewFilter</filter-name>

<filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>

</filter>

<filter-mapping>

<filter-name>hibernateOpenSessionInViewFilter</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

八、在WEB中加载spring
<context-param>

<param-name>contextConfigLocation</param-name>

<param-value>classpath*:/applicationContext.xml</param-value>

</context-param>

<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

</listener>

九、 Spring 刷新Introspector防止内存泄露
<listener>

<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>

</listener>

十、在sitemesh中使用FreeMarker
<filter>

<filter-name>sitemesh</filter-name>

<filter-class>org.apache.struts2.sitemesh.FreeMarkerPageFilter</filter-class>

</filter>

十一、 FreeMarker
FreeMarker 扩展名是ftl

十二、加载sitemesh
<filter>

<filter-name>strutsCleanup</filter-name>

<filter-class>org.apache.struts2.dispatcher.ActionContextCleanUp</filter-class>

</filter>

<filter-name>sitemesh</filter-name>

<filter-class>com.opensymphony.module.sitemesh.filter.PageFilter</filter-class>

</filter>

<filter-name>struts2Filter</filter-name>

<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>

</filter>

<filter-mapping>

<filter-name>strutsCleanup</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

<filter-mapping>

<filter-name>sitemech</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

<filter-mapping>

<filter-name>struts2Filter</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

十三、 spring字符集转换
-<filter>

<filter-name>encodingFilter</filter-name>

<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

<init-param>

<param-name>encoding</param-name>

<param-value>UTF-8</param-value>

</init-param>

<init-param>

<param-name>forceEncoding</param-name>

<param-value>true</param-value>