在這一章節中，我們創建一個Web工程爲：struts2passwd，演示<s:password>的使用。完整的工程目錄結構如下：

在Struts2中，可以使用<s:password>來創建HTML密碼字段。例如，可以聲明「s:password」鍵屬性或者標籤和名稱屬性。

<s:password key="password" />
//or
<s:textfield label="Password" name="password" />

兩者都產生相同的HTML輸出(在默認的XHTML主題)。

Password:

Struts2 <s:password> 示例

一個頁面，「密碼」和「確認密碼」字段，並做了驗證，以確保「確認密碼」是與「密碼」相匹配。

1. 屬性文件

global.properties

#Global messages
username = 用名名
password = 密碼
confirmPassword = 確認密碼
submit = 提交

RegisterAction.properties

#error message
username.required = Username is required
password.required = Password is required
cpassword.required = Confirm password is required
cpassword.notmatch = Confirm password is not match

2. 動作 - Action

RegisterAction.java

package com.yiibai.user.action;

import com.opensymphony.xwork2.ActionSupport;

public class RegisterAction extends ActionSupport{

private String username;
private String password;
private String confirmPassword;

public String getPassword() {
    return password;
}

public void setPassword(String password) {
    this.password = password;
}

public String getConfirmPassword() {
    return confirmPassword;
}

public void setConfirmPassword(String confirmPassword) {
    this.confirmPassword = confirmPassword;
}

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"));
    }
    if("".equals(getPassword())){
        addFieldError("password", getText("password.required"));
    }
    if("".equals(getConfirmPassword())){
        addFieldError("confirmPassword", getText("cpassword.required"));
    }

    if(!(getPassword().equals(getConfirmPassword()))){
        addFieldError("confirmPassword", getText("cpassword.notmatch"));
    }
}

}

3. 視圖頁面

結果頁面使用 Struts2 的「s:password」標籤來創建一個HTML密碼字段。

register.jsp

<%@ taglib prefix="s" uri="/struts-tags" %>

Struts 2 - password 示例

<s:form action="registerUser" namespace="/user">

<s:textfield key="username" />
<s:password key="password" />
<s:password key="confirmPassword" />

<s:submit key="submit" name="submit" />

welcome.jsp

<%@ page contentType="text/html;charset=UTF-8" %>
<%@ taglib prefix="s" uri="/struts-tags" %>

Struts 2 - password 示例

Password :

Confirm Password :

4. struts.xml

/pages/register.jsp /pages/welcome.jsp /pages/register.jsp

5. 運行示例

http://localhost:8080/struts2passwd/user/register.action

*
*

參考

1. Struts2密碼文檔