struts2 笔记

转：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

<!-- 开发模式设置开始 -->

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

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

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

<constant name="struts.convention.classes.reload" value="true" />Convention类从新加载

<!-- 开发模式结束 -->


<!-- 主题， 不用dojo的及struts2复杂标签样式的就把主题设置为simple，这样可以不加载多余的模板。 -->
constant name="struts.ul.theme" value="xthml" /> 指定struts的模板 或者value="simple"

<constant name="struts.locale" value="zh_CN" />地区

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

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

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

<constant name="struts.enable.DynamicMethodInvocation" value="true" />启用动态方法调用，要实现零配置，就是需要动态方法调用。

<constant name="struts.enable.SlashesInActionNames" value="false" />该属性设置Struts 2是否允许在Action名中使用斜线，该属性的默认值是false。如果开发者希望允许在Action名中使用斜线，则可设置该属性为true。

<constant name="struts.convention.action.name.lowercase" value="true" />名称首字母小写

<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

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

<constant name="struts.convention.action.suffix" value="Controller"/>

<constant name="struts.convention.action.mapAllMatches" value="true"/>

<constant name="struts.convention.default.parent.package" value="rest-default"/>

六、    sitemesh 引用变量
在第主个页面之中

<meta name="author" content="[e-mail]">

在模板页中可以引用

<decorator:getProperty property="meta.author" default="[e-mail]" />

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>

         <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>

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

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

</filter>

<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>

         </init-param>

</filter>

<filter-mapping>

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

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

</filter-mapping>