為了比較直觀的學(xué)習(xí)，這里創(chuàng)建一個web工程為：struts2textfield。整個工程的目錄結(jié)構(gòu)如下：
在Struts2中，<s:textfield>文本范例， 例如，可以聲明“s:textfield”鍵屬性或標(biāo)簽和名稱屬性。
<s:textfield key="username" /> // 或 <s:textfield label="Username" name="username" />
<td class="tdLabel"> <label for="registerUser_username" class="label">Username:</label> </td> <td> <input type="text" name="username" value="" id="registerUser_username"/> </td>
global.properties
#Global messages username = 用戶名 submit = 提交
RegisterAction.properties
#error message username.required = 用戶名不可以為空
RegisterAction.java
package com.yiibai.user.action;
import com.opensymphony.xwork2.ActionSupport;
public class RegisterAction extends ActionSupport{
private String username;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
//business logic
public String execute() {
return "SUCCESS";
}
//simple validation
public void validate(){
if("".equals(getUsername())){
addFieldError("username", getText("username.required"));
}
}
}
register.jsp
<%@ taglib prefix="s" uri="/struts-tags" %> <html> <head> </head> <body> <h1>Struts 2 - textbox 示例</h1> <s:form action="registerUser" namespace="/user"> <s:textfield key="username" /> <s:submit key="submit" name="submit" /> </s:form> </body> </html>
welcome.jsp
<%@ page contentType="text/html;charset=UTF-8" %>
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<body>
<h1>Struts 2 - textbox 示例</h1>
<h2><s:property value="username"/></h2>
or
<h2><s:property value="%{username}"/></h2>
</body>
</html>
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<constant name="struts.custom.i18n.resources" value="global" />
<constant name="struts.devMode" value="true" />
<package name="user" namespace="/user" extends="struts-default">
<action name="register">
<result>/pages/register.jsp</result>
</action>
<action name="registerUser"
class="com.yiibai.user.action.RegisterAction">
<result name="SUCCESS">/pages/welcome.jsp</result>
<result name="input">/pages/register.jsp</result>
</action>
</package>
</struts>
http://localhost:8080/struts2textfield/user/register.action
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