第27講 .struts2驗證框架
阿新 • • 發佈：2018-11-11
Struts2 基於 Struts2 攔截器，為開發者提供了一套易用的驗證框架，並可擴充套件；一般的驗證都支援；
1複製HeadFirstStruts2chapter06 改名為：HeadFirstStruts2chapter07 ，web project settings，刪除所有的properties檔案，
2新建com.cruise.model 包，新建User類，屬性userName,name age ,E-mail ,homePage
package com.cruise.model;
public class User {
private
private String name;
private int age;
private String email;
private String homePage;
public String getUserName() {
return
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getName() {
return
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getHomePage() {
return homePage;
}
public void setHomePage(String homePage) {
this.homePage = homePage;
}
@Override
public String toString() {
return "User [userName=" + userName + ", name=" + name + ", age=" + age + ", email=" + email + ", homePage="
+ homePage + "]";
}
}
3新建com.eruise.action包，和RegisterAction.繼承ActionSupport, user屬性，execute預設方法，
package com.cruise.action;
import com.cruise.model.User;
import com.opensymphony.xwork2.ActionSupport;
public class RegisterAction extends ActionSupport{
private User user;
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
@Override
public String execute() throws Exception {
System.out.println("列印傳入的："+user);
return SUCCESS;
}
}
4配置struts.xml檔案，如果驗證驗證框架被拒絕，會返回一個"input",
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>
<package name="manager" extends="struts-default">
<action name="registerAction" class="com.cruise.action.UserAction">
<result name="input">/register.jspresult>
<result name="success">/success.jspresult>
action>
package>
struts>
5配置register.jsp 註冊頁面，和success.jsp 檔案，
register.jsp如下
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@taglib prefix="s" uri="/struts-tags" %>
DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title heretitle>
head>
<body>
<s:form action="registerAction" method="post">
<s:textfield name="user.userName" label="使用者名稱">s:textfield>
<s:textfield name="user.name" label="真實姓名">s:textfield>
<s:textfield name="user.age" label="年齡">s:textfield>
<s:textfield name="user.email" label="郵箱">s:textfield>
<s:textfield name="user.homePage" label="主頁">s:textfield>
<s:submit value="提交">s:submit>
s:form>
body>
html>
success.jsp如下
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@taglib prefix="s" uri="/struts-tags" %>
DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title heretitle>
head>
<body>
註冊成功！！！
table>
body>
html>
6在com.cruise.action包下，新建RegisterAction-validation.xml檔案，寫驗證器，對各個欄位進行條件驗證，
xml version="1.0" encoding="UTF-8"?>
DOCTYPE validators PUBLIC "-//Apache Struts//XWork Validator 1.0.2//EN""http://struts.apache.org/dtds/xwork-validator-1.0.2.dtd">
<validators>
<field name="user.userName">
<field-validator type="requiredstring">
<message>請輸入使用者名稱！！！message>
field-validator>
<field-validator type="stringlength">
<param name="maxLength">20param>
<param name="minLength">6param>
<message>使用者名稱的長度必須在${minLength}和${maxLength}之間message>
field-validator>
field>
<field name="user.name">
<field-validator type="requiredstring">
<message>請輸入真實姓名！！！message>
field-validator>
field>
<field name="user.age">
<field-validator type="int">
<param name="min">18param>
<message>年齡必須滿18週歲！！！message>
field-validator>
field>
<field name="user.email">
<field-validator type="requiredstring">
<message>請輸入郵箱！！！message>
field-validator>
<field-validator type="email">
<message>郵件格式不對！！！message>
field-validator>
field>
<field name="user.homePage">
<field-validator type="requiredstring">
<message>請輸入主頁！！！message>
field-validator>
<field-validator type="url">
<message>主頁格式不對！！！message>
field-validator>
field>
validators>
7測試
http://localhost:8080/HeadFirstStruts2chapter07/register.jsp
8驗證表示式，驗證使用者名稱和真實姓名不能相同，在RegisterAction-validation中，新增驗證表示式，在register.jsp 中新增驗證錯誤的提示程式碼
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE validators PUBLIC "-//Apache Struts//XWork Validator 1.0.2//EN""http://struts.apache.org/dtds/xwork-validator-1.0.2.dtd">
<validators>
<field name="user.userName">
<field-validator type="requiredstring">
<message>請輸入使用者名稱！！！</message>
</field-validator>
<field-validator type="stringlength">
<param name="maxLength">20</param>
<param name="minLength">6</param>
<message>使用者名稱的長度必須在${minLength}和${maxLength}之間</message>
</field-validator>
</field>
<field name="user.name">
<field-validator type="requiredstring">
<message>請輸入真實姓名！！！</message>
</field-validator>
</field>
<field name="user.age">
<field-validator type="int">
<param name="min">18</param>
<message>年齡必須滿18週歲！！！</message>
</field-validator>
</field>
<field name="user.email">
<field-validator type="requiredstring">
<message>請輸入郵箱！！！</message>
</field-validator>
<field-validator type="email">
<message>郵件格式不對！！！</message>
</field-validator>
</field>
<field name="user.homePage">
<field-validator type="requiredstring">
<message>請輸入主頁！！！</message>
</field-validator>
<field-validator type="url">
<message>主頁格式不對！！！</message>
</field-validator>
</field>
<validator type="expression">
<param name="expression"><![CDATA[!user.userName.equals(user.name)]]></param>
<message>真實姓名和使用者名稱不能相同！！！</message>
</validator>
</validators>
register.jsp檔案如下：
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@taglib prefix="s" uri="/struts-tags" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<s:actionerror/>
註冊
<s:form action="registerAction" method="post">
<s:textfield name="user.userName" label="使用者名稱"></s:textfield>
<s:textfield name="user.name" label="真實姓名"></s:textfield>
<s:textfield name="user.age" label="年齡"></s:textfield>
<s:textfield name="user.email" label="郵箱"></s:textfield>
<s:textfield name="user.homePage" label="主頁"></s:textfield>
<s:submit value="提交"></s:submit>
</s:form>
</body>
</html>
9測試
http://localhost:8080/HeadFirstStruts2chapter07/register.jsp