Struts2數據封裝

時間  2019-11-06
標籤 struts2 struts 數據 封裝 欄目 Struts 简体版
原文   原文鏈接

首先是簡單數據類型的封裝html

jsp頁面java

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<h1>Sturts2的數據封裝</h1>
<h3>方式一：屬性驅動-提供set方法的方式</h3>
<s:fielderror/>
<form action="${pageContext.request.contextPath}/userAction1.action" method="post"> 用戶名：<input type="text" name="username"><br/> 密碼：<input type="password" name="password"><br/> 年齡：<input type="text" name="age"><br/> 生日：<input type="date" name="birthday"><br/> 工資：<input type="text" name="salary"><br/>
    <input type="submit" value="提交">
</form>

<h3>方式二：屬性驅動-在頁面中提供表達式的方式</h3>
<form action="${pageContext.request.contextPath}/userAction2.action" method="post"> 用戶名：<input type="text" name="user.username"><br/> 密碼：<input type="password" name="user.password"><br/> 年齡：<input type="text" name="user.age"><br/> 生日：<input type="date" name="user.birthday"><br/> 工資：<input type="text" name="user.salary"><br/>
    <input type="submit" value="提交">
</form>

<h3>方式三：模型驅動的方式</h3>
<form action="${pageContext.request.contextPath}/userAction3.action" method="post"> 用戶名：<input type="text" name="username"><br/> 密碼：<input type="password" name="password"><br/> 年齡：<input type="text" name="age"><br/> 生日：<input type="date" name="birthday"><br/> 工資：<input type="text" name="salary"><br/>
    <input type="submit" value="提交">
</form>
</body>
</html>

struts.xmlapache

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN" "http://struts.apache.org/dtds/struts-2.5.dtd">

<struts>
    <package name="demo2" extends="struts-default" namespace="/">
        <global-results>
            <result name="input">/</result>
        </global-results>
        <action name="userAction1" class="com.jinke.domain.UserAction1"/>
        <action name="userAction2" class="com.jinke.domain.UserAction2"/>
        <action name="userAction3" class="com.jinke.domain.UserAction3"/>
    </package>
</struts>

實體類微信

import java.util.Date; public class User { private String username; private String password; private Integer age; private Date birthday; private Double salary; 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 Integer getAge() { return age; } public void setAge(Integer age) { this.age = age; } public Date getBirthday() { return birthday; } public void setBirthday(Date birthday) { this.birthday = birthday; } public Double getSalary() { return salary; } public void setSalary(Double salary) { this.salary = salary; } @Override public String toString() { return "User{" +
                "username='" + username + '\'' +
                ", password='" + password + '\'' +
                ", age=" + age +
                ", birthday=" + birthday +
                ", salary=" + salary +
                '}'; } }

簡單數據封裝的三種方式dom

import com.opensymphony.xwork2.ActionSupport; import java.util.Date; /** * 數據封裝的方式一：提供屬性的set方法 */
public class UserAction1 extends ActionSupport { private String username; private String password; private Integer age; private Date birthday; private Double salary; @Override public String execute() throws Exception { //接收數據
 System.out.println(username); System.out.println(password); System.out.println(age); System.out.println(birthday); System.out.println(salary); //封裝數據
        User user = new User(); user.setUsername(username); user.setPassword(password); user.setAge(age); user.setBirthday(birthday); user.setSalary(salary); return NONE; } public void setUsername(String username) { this.username = username; } public void setPassword(String password) { this.password = password; } public void setAge(Integer age) { this.age = age; } public void setBirthday(Date birthday) { this.birthday = birthday; } public void setSalary(Double salary) { this.salary = salary; } }
import com.opensymphony.xwork2.ActionSupport; /** * 數據封裝的方式二：屬性驅動-在頁面中提供表達式的方式 */
public class UserAction2 extends ActionSupport { //提供一個User對象
    private User user; public void setUser(User user) { this.user = user; } public User getUser() { return user; } @Override public String execute() throws Exception { System.out.println(user.toString()); return NONE; } }
import com.opensymphony.xwork2.ActionSupport; import com.opensymphony.xwork2.ModelDriven; /** * 數據封裝的方式三：模型驅動的方式 */
public class UserAction3 extends ActionSupport implements ModelDriven<User> { private User user = new User();//手動實例化User
 @Override public String execute() throws Exception { System.out.println(user.toString()); return NONE; } //模型驅動須要使用的方法
 @Override public User getModel() { return user; } }

結果jsp

 

下面是複雜數據類型的封裝ide

jsp頁面post

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<h1>Struts2複雜類型的數據封裝</h1>
<h3>封裝到List集合中：批量插入商品</h3>
<form action="${pageContext.request.contextPath}/productAction1.action" method="post"> 商品名稱：<input type="text" name="products[0].name"><br/> 商品價格：<input type="text" name="products[0].price"><br/> 商品名稱：<input type="text" name="products[1].name"><br/> 商品價格：<input type="text" name="products[1].price"><br/> 商品名稱：<input type="text" name="products[2].name"><br/> 商品價格：<input type="text" name="products[2].price"><br/>
    <input type="submit" value="提交">
</form>

<h3>封裝到Map集合中：批量插入商品</h3>
<form action="${pageContext.request.contextPath}/productAction2.action" method="post"> 商品名稱：<input type="text" name="map['one'].name"><br/> 商品價格：<input type="text" name="map['one'].price"><br/> 商品名稱：<input type="text" name="map['two'].name"><br/> 商品價格：<input type="text" name="map['two'].price"><br/> 商品名稱：<input type="text" name="map['three'].name"><br/> 商品價格：<input type="text" name="map['three'].price"><br/>
    <input type="submit" value="提交">
</form>
</body>
</html>

struts.xmlthis

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN" "http://struts.apache.org/dtds/struts-2.5.dtd">

<struts>
    <package name="demo3" extends="struts-default" namespace="/">
        <action name="productAction1" class="com.jinke.product.ProductAction1"/>
        <action name="productAction2" class="com.jinke.product.ProductAction2"/>
    </package>
</struts>

實體類spa

public class Product { private String name; private Double price; public String getName() { return name; } public void setName(String name) { this.name = name; } public Double getPrice() { return price; } public void setPrice(Double price) { this.price = price; } @Override public String toString() { return "Product{" +
                "name='" + name + '\'' +
                ", price=" + price +
                '}'; } }

數據保存到List中

import com.opensymphony.xwork2.ActionSupport; import java.util.List; /** * 負責類型數據封裝到List中 */
public class ProductAction1 extends ActionSupport { private List<Product> products; public void setProducts(List<Product> products) { this.products = products; } public List<Product> getProducts() { return products; } @Override public String execute() throws Exception { for (Product product : products) { System.out.println(product); } return NONE; } }

數據保存到Map中

import com.opensymphony.xwork2.ActionSupport; import java.util.Map; /** * 負責類型數據封裝到Map中 */
public class ProductAction2 extends ActionSupport { private Map<String, Product> map; public Map<String, Product> getMap() { return map; } public void setMap(Map<String, Product> map) { this.map = map; } @Override public String execute() throws Exception { for (String key : map.keySet()) { Product product = map.get(key); System.out.println(product.toString()); } return NONE; } }

結果

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