struts2--输入校验的国际化信息

strust2国际化：

 一：简单理解

    国际化简称i18n，其来源是英文单词 internationalization的首末字符i 和n。18为中间的字符数。

    随着全球经济的一体化，软件开发者应该开发出支持多国语言、国际化的Web应用。对于Web应用来说，同样的页面在不同的语言环境下需要显示不同的效果。

    国际化文件的命名规则：

          1、基本名.properties 如：message.properties

          2、基本名_语言编码_国家编码.properties 如：message_zh_CN.properties, message_en_US.properties 其中语言编码和国家编码是固定的，可以在JDK中Locale类的常量中找到。

两种形式：

对于两种形式的国际化资源文件配置，在Action同目录下创建Action名.properties文件：

这里为LoginAction.properties:

user.username.requiredstring = \u8BF7\u8F93\u5165\u59D3\u540Duser.username.regex = \u60A8\u8F93\u5165\u7684\u59D3\u540D\u53EA\u80FD\u662F\u5B57\u6BCD\u548C\u6570\u5B57\uFF0C\u4E14\u957F\u5EA6\u57284\u523020\u4E4B\u95F4user.password.requiredstring = \u8BF7\u8F93\u5165\u5BC6\u7801user.password.regex = \u60A8\u8F93\u5165\u7684\u59D3\u540D\u53EA\u80FD\u662F\u5B57\u6BCD\u548C\u6570\u5B57\uFF0C\u4E14\u957F\u5EA6\u4E3A6user.tel.requiredstring = \u8BF7\u8F93\u5165\u7535\u8BDD\u53F7\u7801user.tel.regex = \u60A8\u8F93\u5165\u7684\u683C\u5F0F\u4E0D\u6B63\u786Euser.age.int = \u8BF7\u8F93\u5165\u60A8\u7684\u771F\u5B9E\u5E74\u9F84user.birthday.date = \u8BF7\u8F93\u5165\u6B63\u786E\u7684\u751F\u65E5

后面的编码为汉字，可以通过properties查看具体信息：

一：通过key来指定国际化提示信息

LoginAction:

package com.action;import com.bean.User;import com.opensymphony.xwork2.ActionSupport;public class LoginAction extends ActionSupport{ private User user; public String execute() {return SUCCESS;}public User getUser() {return user;}public void setUser(User user) {this.user = user;} }

LoginAction-validate.properties文件：

<?xml version="1.0" encoding="UTF-8"?>  <!DOCTYPE validators PUBLIC  "-//OpenSymphony Group//XWork Validator 1.0.3//EN"  "http://www.opensymphony.com/xwork/xwork-validator-1.0.3.dtd"><validators>  <field name  = "user.username">    <field-validator type = "requiredstring">       <param name = "doTrim">true</param>       <message key = "user.username.requiredstring"/>    </field-validator>    <field-validator type = "regex">       <param name = "expression"><![CDATA[(\w{4,20})]]></param>       <message key = "user.username.regex"/>    </field-validator>  </field>    <field name = "user.password">    <field-validator type = "requiredstring">       <param name = "doTrim">true</param>       <message key = "user.password.requiredstring"/>    </field-validator>     <field-validator type = "regex">       <param name = "expression"><![CDATA[(\w{6})]]></param>       <message key = "user.password.regex"/>    </field-validator>   </field>      <field name = "user.tel">    <field-validator type = "requiredstring">       <param name = "doTrim">true</param>       <message key = "user.tel.requiredstring"/>    </field-validator>     <field-validator type = "regex">       <param name = "expression"><![CDATA[(^1[3578]\d{9}$)]]></param>       <message key = "user.tel.regex"/>    </field-validator>   </field>     <field name = "user.age">    <field-validator type = "int">       <param name = "min">1</param>       <param name = "max">100</param>       <message key = "user.age.int"/>    </field-validator>   </field>     <field name = "user.birthday">    <field-validator type = "date">       <param name = "min">1990-01-01</param>       <param name = "max">2020-01-01</param>       <message key = "user.birthday.date"/>     </field-validator>   </field></validators>        

二：通过ActionSupport的getText()方法来获取国际化提示信息

LoginAction-validate.properties文件：

<?xml version="1.0" encoding="UTF-8"?>  <!DOCTYPE validators PUBLIC  "-//OpenSymphony Group//XWork Validator 1.0.3//EN"  "http://www.opensymphony.com/xwork/xwork-validator-1.0.3.dtd"><validators>  <field name  = "user.username">    <field-validator type = "requiredstring">       <param name = "doTrim">true</param>       <message>${getText("user.username.requiredstring")}</message>    </field-validator>    <field-validator type = "regex">       <param name = "expression"><![CDATA[(\w{4,20})]]></param>       <message>${getText("user.username.regex")}</message>    </field-validator>  </field>    <field name = "user.password">    <field-validator type = "requiredstring">       <param name = "doTrim">true</param>       <message>${getText("user.password.requiredstring")}</message>    </field-validator>     <field-validator type = "regex">       <param name = "expression"><![CDATA[(\w{6})]]></param>       <message>${getText("user.password.regex")}</message>    </field-validator>   </field>      <field name = "user.tel">    <field-validator type = "requiredstring">       <param name = "doTrim">true</param>       <message>${getText("user.tel.requiredstring")}</message>    </field-validator>     <field-validator type = "regex">       <param name = "expression"><![CDATA[(^1[3578]\d{9}$)]]></param>       <message>${getText("user.tel.regex")}</message>    </field-validator>   </field>     <field name = "user.age">    <field-validator type = "int">       <param name = "min">1</param>       <param name = "max">100</param>       <message>${getText("user.age.int")}</message>    </field-validator>   </field>     <field name = "user.birthday">    <field-validator type = "date">       <param name = "min">1990-01-01</param>       <param name = "max">2020-01-01</param>       <message>${getText("user.birthday.date")}</message>     </field-validator>   </field></validators>