在struts的配置文件中的形式為：

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

struts.action.extension
The URL extension to use to determine if the request is meant for a Struts action
用URL擴展名來確定是否這個請求是被用作Struts action，其實也就是設置 action的后綴，例如login.do的'do'字。

struts.configuration
The org.apache.struts2.config.Configuration implementation class
org.apache.struts2.config.Configuration接口名

struts.configuration.files
A list of configuration files automatically loaded by Struts
struts自動加載的一個配置文件列表

struts.configuration.xml.reload
Whether to reload the XML configuration or not
是否加載xml配置(true,false)

struts.continuations.package
The package containing actions that use Rife continuations
含有actions的完整連續的package名稱

struts.custom.i18n.resources
Location of additional localization properties files to load
加載附加的國際化屬性文件（不包含.properties后綴）

struts.custom.properties
Location of additional configuration properties files to load
加載附加的配置文件的位置

struts.devMode
Whether Struts is in development mode or not
是否為struts開發模式

struts.dispatcher.parametersWorkaround
Whether to use a Servlet request parameter workaround necessary for some versions of WebLogic
（某些版本的weblogic專用）是否使用一個servlet請求參數工作區（PARAMETERSWORKAROUND）

struts.enable.DynamicMethodInvocation
Allows one to disable dynamic method invocation from the URL
允許動態方法調用

struts.freemarker.manager.classname
The org.apache.struts2.views.freemarker.FreemarkerManager implementation class
org.apache.struts2.views.freemarker.FreemarkerManager接口名

struts.i18n.encoding
The encoding to use for localization messages
國際化信息內碼

struts.i18n.reload
Whether the localization messages should automatically be reloaded
是否國際化信息自動加載

struts.locale
The default locale for the Struts application
默認的國際化地區信息

struts.mapper.class
The org.apache.struts2.dispatcher.mapper.ActionMapper implementation class
org.apache.struts2.dispatcher.mapper.ActionMapper接口

struts.multipart.maxSize
The maximize size of a multipart request (file upload)
multipart請求信息的最大尺寸（文件上傳用）

struts.multipart.parser
The org.apache.struts2.dispatcher.multipart.MultiPartRequest parser implementation for a multipart request (file upload)
專為multipart請求信息使用的 org.apache.struts2.dispatcher.multipart.MultiPartRequest解析器接口（文件上傳用）

struts.multipart.saveDir
The directory to use for storing uploaded files
設置存儲上傳文件的目錄夾

struts.objectFactory
The com.opensymphony.xwork2.ObjectFactory implementation class
com.opensymphony.xwork2.ObjectFactory接口（spring）

struts.objectFactory.spring.autoWire
Whether Spring should autoWire or not
是否自動綁定Spring

struts.objectFactory.spring.useClassCache
Whether Spring should use its class cache or not
是否spring應該使用自身的cache

struts.objectTypeDeterminer
The com.opensymphony.xwork2.util.ObjectTypeDeterminer implementation class
com.opensymphony.xwork2.util.ObjectTypeDeterminer接口

struts.serve.static.browserCache
If static content served by the Struts filter should set browser caching header properties or not
是否struts過濾器中提供的靜態內容應該被瀏覽器緩存在頭部屬性中

struts.serve.static
Whether the Struts filter should serve static content or not
是否struts過濾器應該提供靜態內容

struts.tag.altSyntax
Whether to use the alterative syntax for the tags or not
是否可以用替代的語法替代tags

struts.ui.templateDir
The directory containing UI templates
UI templates的目錄夾

struts.ui.theme
The default UI template theme
默認的UI template主題

struts.url.http.port
The HTTP port used by Struts URLs
設置http端口

struts.url.https.port
The HTTPS port used by Struts URLs
設置https端口

struts.url.includeParams
The default includeParams method to generate Struts URLs
在url中產生 默認的includeParams

struts.velocity.configfile
The Velocity configuration file path
velocity配置文件路徑

struts.velocity.contexts
List of Velocity context names
velocity的context列表

struts.velocity.manager.classname
org.apache.struts2.views.velocity.VelocityManager implementation class
org.apache.struts2.views.velocity.VelocityManager接口名

struts.velocity.toolboxlocation
The location of the Velocity toolbox
velocity工具盒的位置
struts.xslt.nocache
Whether or not XSLT templates should not be cached
是否XSLT模版應該被緩存

【原創】struts2的struts.properties配置文件詳解

struts.action.extension
The URL extension to use to determine if the request is meant for a Struts action
用URL擴展名來確定是否這個請求是被用作Struts action，其實也就是設置 action的后綴，例如login.do的'do'字。

struts.configuration
The org.apache.struts2.config.Configuration implementation class
org.apache.struts2.config.Configuration接口名

struts.configuration.files
A list of configuration files automatically loaded by Struts
struts自動加載的一個配置文件列表

struts.configuration.xml.reload
Whether to reload the XML configuration or not
是否加載xml配置(true,false)

struts.continuations.package
The package containing actions that use Rife continuations
含有actions的完整連續的package名稱

struts.custom.i18n.resources
Location of additional localization properties files to load
加載附加的國際化屬性文件（不包含.properties后綴）

struts.custom.properties
Location of additional configuration properties files to load
加載附加的配置文件的位置

struts.devMode
Whether Struts is in development mode or not
是否為struts開發模式

struts.dispatcher.parametersWorkaround
Whether to use a Servlet request parameter workaround necessary for some versions of WebLogic
（某些版本的weblogic專用）是否使用一個servlet請求參數工作區（PARAMETERSWORKAROUND）

struts.enable.DynamicMethodInvocation
Allows one to disable dynamic method invocation from the URL
允許動態方法調用

struts.freemarker.manager.classname
The org.apache.struts2.views.freemarker.FreemarkerManager implementation class
org.apache.struts2.views.freemarker.FreemarkerManager接口名

struts.i18n.encoding
The encoding to use for localization messages
國際化信息內碼

struts.i18n.reload
Whether the localization messages should automatically be reloaded
是否國際化信息自動加載

struts.locale
The default locale for the Struts application
默認的國際化地區信息

struts.mapper.class
The org.apache.struts2.dispatcher.mapper.ActionMapper implementation class
org.apache.struts2.dispatcher.mapper.ActionMapper接口

struts.multipart.maxSize
The maximize size of a multipart request (file upload)
multipart請求信息的最大尺寸（文件上傳用）

struts.multipart.parser
The org.apache.struts2.dispatcher.multipart.MultiPartRequest parser implementation for a multipart request (file upload)
專為multipart請求信息使用的 org.apache.struts2.dispatcher.multipart.MultiPartRequest解析器接口（文件上傳用）

struts.multipart.saveDir
The directory to use for storing uploaded files
設置存儲上傳文件的目錄夾

struts.objectFactory
The com.opensymphony.xwork2.ObjectFactory implementation class
com.opensymphony.xwork2.ObjectFactory接口（spring）

struts.objectFactory.spring.autoWire
Whether Spring should autoWire or not
是否自動綁定Spring

struts.objectFactory.spring.useClassCache
Whether Spring should use its class cache or not
是否spring應該使用自身的cache

struts.objectTypeDeterminer
The com.opensymphony.xwork2.util.ObjectTypeDeterminer implementation class
com.opensymphony.xwork2.util.ObjectTypeDeterminer接口

struts.serve.static.browserCache
If static content served by the Struts filter should set browser caching header properties or not
是否struts過濾器中提供的靜態內容應該被瀏覽器緩存在頭部屬性中

struts.serve.static
Whether the Struts filter should serve static content or not
是否struts過濾器應該提供靜態內容

struts.tag.altSyntax
Whether to use the alterative syntax for the tags or not
是否可以用替代的語法替代tags

struts.ui.templateDir
The directory containing UI templates
UI templates的目錄夾

struts.ui.theme
The default UI template theme
默認的UI template主題

struts.url.http.port
The HTTP port used by Struts URLs
設置http端口

struts.url.https.port
The HTTPS port used by Struts URLs
設置https端口

struts.url.includeParams
The default includeParams method to generate Struts URLs
在url中產生 默認的includeParams

struts.velocity.configfile
The Velocity configuration file path
velocity配置文件路徑

struts.velocity.contexts
List of Velocity context names
velocity的context列表

struts.velocity.manager.classname
org.apache.struts2.views.velocity.VelocityManager implementation class
org.apache.struts2.views.velocity.VelocityManager接口名

struts.velocity.toolboxlocation
The location of the Velocity toolbox
velocity工具盒的位置
struts.xslt.nocache
Whether or not XSLT templates should not be cached
是否XSLT模版應該被緩存