实验_Struts2国际化 登录页面国际化的两种实现方法
1.实验名称
Struts2国际化
2.实验目的
（1）了解程序国际化的意义
（2）理解JAVA国际化的思路。会编写资源文件，并能使用Locale类和ResourceBundle类对程序进行国际化。
3.实验内容
4.文件描述：
ChangeLang.java:封装language属性。
Login.java：登陆相关模型驱动与处理、拦截方法
UserBean.java：封装用户名、密码属性
myMessage_en_US.properties：英文配置文件
myMessage_zh_CN.properties：中文配置文件
index.jsp：登录页
error.jsp：登陆报错页
welcome.jsp：登陆成功页
Struts.xml:struts2配置文件
5.实验源代码
- ChangeLang.java
public class ChangeLang extends ActionSupport
{
private static final long serialVersionUID = 1L;
private String language;
public String getLanguage() {
return language;
}
public void setLanguage(String language) {
this.language = language;
}
public String execute()
{
String[] strings = this.getLanguage().split("_");
Locale locale = new Locale(strings[0], strings[1]);
ServletActionContext.getContext().setLocale(locale);
ActionContext.getContext().getApplication().put("lang", this.getLanguage());
return SUCCESS;
}
}
Login.java
public class Login extends ActionSupport implements ModelDriven<UserBean>
{
private static final long serialVersionUID = 1L;
private UserBean user = new UserBean();
@Override
public UserBean getModel() {
// TODO Auto-generated method stub
return user;
}
ActionContext context = ActionContext.getContext();
public String execute()
{
boolean rightUser = "chenghaoran".equals( this.getModel().getUserName() );
boolean rightPassWord = "12345678".equals(this.getModel().getPassWord());
if ( rightUser && rightPassWord )
{
context.getSession().put("username", this.getModel().getUserName());
return SUCCESS;
}
else
{
return ERROR;
}
}
public void validate()
{
if (this.getModel().getUserName().length() < 6 )
{
this.addFieldError("userName", this.getText("label_userError"));
}
if (this.getModel().getPassWord().length() < 5)
{
this.addFieldError("passWord", this.getText("label_passwordError"));
}
}
}- UserBean.java
public class UserBean
{
private String userName;
private String passWord;
public UserBean(){}
public String getUserName() {
return userName;
}
public String getPassWord() {
return passWord;
}
public void setUserName(String userName) {
this.userName = userName;
}
public void setPassWord(String passWord) {
this.passWord = passWord;
}
}- myMessage_en_US.properties
label_user = User:
label_password = PassWord:
label_submit = Login
label_reset = Reset
label_userError = userName\'s length can\'t less than six!
label_passwordError = passWord\'s length can\'t less than five!
welcome = Welcome !- myMessage_zh_CN.properties
label_user = \u7528\u6237\u540D:
label_password = \u5BC6\u7801:
label_submit = \u767B\u5F55
label_reset = \u91CD\u586B
label_userError = \u7528\u6237\u540D\u957F\u5EA6\u4E0D\u5F97\u5C11\u4E8E6\u4E2A\u5B57\u7B26
label_passwordError = \u5BC6\u7801\u957F\u5EA6\u4E0D\u5F97\u5C11\u4E8E5\u4E2A\u5B57\u7B26
welcome = \u6B22\u8FCE\u4F60- index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>登录页title>
head>
<body>
<%
String lang = (String)application.getAttribute("lang");
if (lang == null)
{
lang = "zh_CN";
}
session.setAttribute("language", lang);
%>
<table border="1">
<s:form method="post" name="loginForm" action="Login" namespace="/" validate="false">
<tr>
<td>
<s:text name="label_user">s:text>
td>
<td>
<s:textfield name="userName" size="20">s:textfield>
td>
tr>
<tr>
<td>
<s:text name="label_password">s:text>
td>
<td>
<s:password name="passWord" size="20">s:password>
td>
tr>
<input type="hidden" name="request_locale" value="<%=(String)session.getAttribute("language")%>"/>
<tr>
<td colspan="2" align="center">
<s:submit type="input" key="label_submit">s:submit>
<s:reset type="password" key="label_reset">s:reset>
td>
tr>
<tr>
<td colspan="2">
<s:fielderror>
s:fielderror>
td>
tr>
s:form>
table>
<s:url id="english" action="ChangeLang.action">
<s:param name="language">en_USs:param>
s:url>
<s:a href="%{english}">英文s:a>
<s:url id="zhongwen" action="ChangeLang.action">
<s:param name="language">zh_CNs:param>
s:url>
<s:a href="%{zhongwen}">中文s:a>
body>
html>- error.jsp
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Login Errortitle>
head>
<body>
<h1>Sorry login failed!h1>
body>
html>
welcome.jsp
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Login Success!title>
head>
<body>
<s:property value="#session.username"/>
<h3>Welcome , you login successfully !h3>
<s:text name="welcome">s:text>
body>
html>- Struts.xml
<constant name="struts.locale" value="zh_CN" />
<constant name="struts.custom.i18n.resources" value="i18n/myMessage" />
<constant name="struts.ui.theme" value="simple" />
<constant name="struts.ui.templateDir" value="template" />
<constant name="struts.ui.templateSuffix" value="ftl" />
name="hello" extends="struts-default" namespace="/">
name="Login" class="yang.www.Login">
<result name="success">/welcome.jspresult>
<result name="error">/error.jspresult>
<result name="input">/index.jspresult>
name="ChangeLang" class="yang.www.ChangeLang" >
<result name="success">/index.jspresult>
第二种思路：
20171114_shiyan_newinternationallogin
- /20171114_shiyan_newinternationallogin/src/nuc/sw/action/LoginAction.java
package nuc.sw.action;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import org.apache.struts2.ServletActionContext;
public class LoginAction extends ActionSupport {
private String username;
private String password;
private String type;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
// @Override
// public void validate(){
//if(username==null){
//addFieldError("username","用户名不能为空"); }
// if(password==null){ addFieldError("password","密码不能为空");
//}
// }
// @Override
// public void validate() {
// if(username.equals("admin") && password.equals("pass")){
// return;
// }else{
// addFieldError("username","用户名或密码不正确");
// }
// }
public String Login() throws Exception {
if (username.equals("lv") && password.equals("pass")) {
ActionContext.getContext().getSession().put("username", username);
return SUCCESS;
} else if (username.equals("chenghaoran") && password.equals("12345678")){
ActionContext.getContext().getSession().put("username", username);
return SUCCESS;
}else{
addFieldError("error",getText("用户名或密码不正确"));
}
return INPUT;
}
}- /20171114_shiyan_newinternationallogin/src/nuc/sw/action/TransformAction.java
package nuc.sw.action;
import com.opensymphony.xwork2.ActionSupport;
import com.sun.net.httpserver.Authenticator;
public class TransformAction extends ActionSupport {
@Override
public String execute()throws Exception{
return SUCCESS;
}
}
- /20171114_shiyan_newinternationallogin/src/nuc/sw/action/LoginAction-validation.xml
<validators>
<field name="username">
<field-validator type="requiredstring">
<param name="trim">trueparam>
<message key="用户名不能为空">message>
field-validator>
field>
<field name="password">
<field-validator type="requiredstring">
<param name="trim">trueparam>
<message key="密码不能为空">message>
field-validator>
field>
validators>- /20171114_shiyan_newinternationallogin/src/messageResource_en_US.properties
username=username
password=password
login=login
usertype=usertype:
\u666E\u901A\u7528\u6237=user
\u7BA1\u7406\u5458=admin
welcome=welcome!{0}
\u4E2D\u6587\u7248=version of China
\u82F1\u6587\u7248=version of US
title=LoginPage
sucPage=successPage
\u7528\u6237\u540D\u6216\u5BC6\u7801\u4E0D\u6B63\u786E=Username or password incorrect\uFF01
\u7528\u6237\u540D\u4E0D\u80FD\u4E3A\u7A7A=username cannot be null !
\u5BC6\u7801\u4E0D\u80FD\u4E3A\u7A7A=password cannot be null !
url=Transform.action?request_locale=zh_CN
version=version of China- /20171114_shiyan_newinternationallogin/src/messageResource_zh_CN.properties
username=\u7528\u6237\u540D
password=\u5BC6\u7801
login=\u767B\u5F55
usertype=\u7528\u6237\u7C7B\u578B:
welcome=\u6B22\u8FCE\u60A8!{0}
\u82F1\u6587\u7248=\u82F1\u6587\u7248
\u4E2D\u6587\u7248=\u4E2D\u6587\u7248
\u666E\u901A\u7528\u6237=\u666E\u901A\u7528\u6237
\u7BA1\u7406\u5458=\u7BA1\u7406\u5458
title=\u767B\u5F55\u9875
sucPage=\u767B\u5F55\u6210\u529F\u9875
\u7528\u6237\u540D\u6216\u5BC6\u7801\u4E0D\u6B63\u786E=\u7528\u6237\u540D\u6216\u5BC6\u7801\u4E0D\u6B63\u786E\uFF01
\u7528\u6237\u540D\u4E0D\u80FD\u4E3A\u7A7A=\u7528\u6237\u540D\u4E0D\u80FD\u4E3A\u7A7A!
\u5BC6\u7801\u4E0D\u80FD\u4E3A\u7A7A=\u5BC6\u7801\u4E0D\u80FD\u4E3A\u7A7A\uFF01
url=Transform.action?request_locale=en_US
version=\u82F1\u6587\u7248
- /20171114_shiyan_newinternationallogin/src/struts.properties
struts.custom.i18n.resources=messageResource
struts.i18n.encoding=utf-8- /20171114_shiyan_newinternationallogin/src/struts.xml
<struts>
<package name="I18N" namespace="/" extends="struts-default">
<action name="Login" class="nuc.sw.action.LoginAction" method="Login">
<result>/success.jspresult>
<result name="input">/login.jspresult>
action>
<action name="Transform" class="nuc.sw.action.TransformAction">
<result>/login.jspresult>
action>
package>
struts>- /20171114_shiyan_newinternationallogin/WebContent/index.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>$Title$title>
head>
<body>
$END$
body>
html>- /20171114_shiyan_newinternationallogin/WebContent/login.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="s" uri="/struts-tags" %>
<%--"messageResource" >--%>
<html>
<head>
<title><s:text name="title"/>title>
head>
<body>
<s:fielderror fieldName="error" key=""/>
<s:form action="Login" method="POST">
<tr><td><s:textfield name="username" key="username">s:textfield>td>tr>
<tr><td><s:password name="password" key="password">s:password>td>tr>
<%--select list="{'普通用户','管理员'}" name="type" key="usertype">--%>
<%--select>--%>
<tr><td><s:text name="usertype"/>td>
<td><select name="usertype">
<option name="user"><s:text name="普通用户"/>option>
<option name="admin"><s:text name="管理员"/>option>
select>td>
tr>
<tr><s:submit key="login">s:submit>tr>
s:form>
<a href="url" />"><s:text name="version"/>a>
<%--
"Transform.action?request_locale=zh_CN">
"中文版"/>
"Transform.action?request_locale=en_US">
"英文版"/>
--%>
body>
html>
<%----%> - /20171114_shiyan_newinternationallogin/WebContent/success.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
<title><s:text name="sucPage"/>title>
head>
<body>
<center>
<s:text name="welcome">
<s:param>
<s:property value="username">s:property>
s:param>
s:text>
center>
body>
html>
第一种在英文和中文界面都可以看到两个切换按钮。
第二种在英文页面只能看到切换中文的按钮，中文亦然。