首先是简单数据类型的封装
jsp页面
代码语言：javascript复制<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<h1>Sturts2的数据封装</h1>
<h3>方式一：属性驱动-提供set方法的方式</h3>
<s:fielderror/>
<form action="${pageContext.request.contextPath}/userAction1.action" method="post">
用户名：<input type="text" name="username"><br/>
密码：<input type="password" name="password"><br/>
年龄：<input type="text" name="age"><br/>
生日：<input type="date" name="birthday"><br/>
工资：<input type="text" name="salary"><br/>
<input type="submit" value="提交">
</form>
<h3>方式二：属性驱动-在页面中提供表达式的方式</h3>
<form action="${pageContext.request.contextPath}/userAction2.action" method="post">
用户名：<input type="text" name="user.username"><br/>
密码：<input type="password" name="user.password"><br/>
年龄：<input type="text" name="user.age"><br/>
生日：<input type="date" name="user.birthday"><br/>
工资：<input type="text" name="user.salary"><br/>
<input type="submit" value="提交">
</form>
<h3>方式三：模型驱动的方式</h3>
<form action="${pageContext.request.contextPath}/userAction3.action" method="post">
用户名：<input type="text" name="username"><br/>
密码：<input type="password" name="password"><br/>
年龄：<input type="text" name="age"><br/>
生日：<input type="date" name="birthday"><br/>
工资：<input type="text" name="salary"><br/>
<input type="submit" value="提交">
</form>
</body>
</html>struts.xml
代码语言：javascript复制<?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>实体类
代码语言：javascript复制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
'}';
}
}简单数据封装的三种方式
代码语言：javascript复制import com.opensymphony.xwork2.ActionSupport;
import java.util.Date;
/**
* 数据封装的方式一：提供属性的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 {
//接收数据
System.out.println(username);
System.out.println(password);
System.out.println(age);
System.out.println(birthday);
System.out.println(salary);
//封装数据
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;
/**
* 数据封装的方式二：属性驱动-在页面中提供表达式的方式
*/
public class UserAction2 extends ActionSupport {
//提供一个User对象
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;
/**
* 数据封装的方式三：模型驱动的方式
*/
public class UserAction3 extends ActionSupport implements ModelDriven<User> {
private User user = new User();//手动实例化User
@Override
public String execute() throws Exception {
System.out.println(user.toString());
return NONE;
}
//模型驱动需要使用的方法
@Override
public User getModel() {
return user;
}
}结果
下面是复杂数据类型的封装
jsp页面
代码语言：javascript复制<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<h1>Struts2复杂类型的数据封装</h1>
<h3>封装到List集合中：批量插入商品</h3>
<form action="${pageContext.request.contextPath}/productAction1.action" method="post">
商品名称：<input type="text" name="products[0].name"><br/>
商品价格：<input type="text" name="products[0].price"><br/>
商品名称：<input type="text" name="products[1].name"><br/>
商品价格：<input type="text" name="products[1].price"><br/>
商品名称：<input type="text" name="products[2].name"><br/>
商品价格：<input type="text" name="products[2].price"><br/>
<input type="submit" value="提交">
</form>
<h3>封装到Map集合中：批量插入商品</h3>
<form action="${pageContext.request.contextPath}/productAction2.action" method="post">
商品名称：<input type="text" name="map['one'].name"><br/>
商品价格：<input type="text" name="map['one'].price"><br/>
商品名称：<input type="text" name="map['two'].name"><br/>
商品价格：<input type="text" name="map['two'].price"><br/>
商品名称：<input type="text" name="map['three'].name"><br/>
商品价格：<input type="text" name="map['three'].price"><br/>
<input type="submit" value="提交">
</form>
</body>
</html>struts.xml
代码语言：javascript复制<?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>实体类
代码语言：javascript复制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
'}';
}
}数据保存到List中
代码语言：javascript复制import com.opensymphony.xwork2.ActionSupport;
import java.util.List;
/**
* 负责类型数据封装到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;
}
}数据保存到Map中
代码语言：javascript复制import com.opensymphony.xwork2.ActionSupport;
import java.util.Map;
/**
* 负责类型数据封装到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;
}
}结果
