项目结构图：
代码如下：
Product
package com.mstf.bean;
import java.io.Serializable;
/**
* Product类，封装了一些信息，包含三个属性
* @author wangzheng
*
*/
public class Product implements Serializable {
private static final long serialVersionUID = 1L;
private String name;
private String description;
private float price;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public float getPrice() {
return price;
}
public void setPrice(float price) {
this.price = price;
}
}
ProductForm
package com.mstf.bean.form;
/**
* ProductForm是表单类
* 作用：当数据校验失败时，用于保存和展示用户在原始表单的输入
* @author wangzheng
*
*/
public class ProductForm {
private String name;
private String description;
private String price;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getPrice() {
return price;
}
public void setPrice(String price) {
this.price = price;
}
}
InputProductController
package com.mstf.controller;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;
public class InputProductController implements Controller {
private static final Log logger=LogFactory.getLog(InputProductController.class);
/**
* 返回一个ModelAndView，包含视图，且没有模型，所有直接转发
*/
@Override
public ModelAndView handleRequest(HttpServletRequest req,HttpServletResponse resp) throws Exception {
logger.info("进入handleRequest成功");
return new ModelAndView("ProductForm");
}
}
SaveProductController
package com.mstf.controller;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;
import com.mstf.bean.Product;
import com.mstf.bean.form.ProductForm;
public class SaveProductController implements Controller {
private static final Log logger=LogFactory.getLog(InputProductController.class);
@Override
public ModelAndView handleRequest(HttpServletRequest req,HttpServletResponse resp) throws Exception {
req.setCharacterEncoding("UTF-8"); //转码
resp.setCharacterEncoding("UTF-8");
logger.info("进入SaveProductController成功");
// 构建一个ProductForm表单对象
ProductForm productForm = new ProductForm();
// 写入表单对象
productForm.setName(req.getParameter("name"));
productForm.setDescription(req.getParameter("description"));
productForm.setPrice(req.getParameter("price"));
// 创建模型
Product product = new Product();
product.setName(productForm.getName());
product.setDescription(productForm.getDescription());
try {
product.setPrice(Float.parseFloat(productForm.getPrice()));
} catch (Exception e) {
e.printStackTrace();
}
return new ModelAndView("ProductDetails", "product",product);
}
}
springmvc-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean name="/product_input.action" class="com.mstf.controller.InputProductController"/>
<bean name="/product_save.action" class="com.mstf.controller.SaveProductController"/>
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
version="3.0">
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/config/springmvc-config.xml
</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>*.action</url-pattern>
</servlet-mapping>
</web-app>
ProductDetails.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>详情</title>
<style type="text/css">@IMPORT url("css/main.css");</style>
</head>
<body>
<div id="global">
<h4>产品已保存</h4>
<p>
<h5>详细列表:</h5>
名称: ${product.name}<br>
简介: ${product.description}<br>
价格: ￥${product.price}
</p>
</div>
</body>
</html>
ProductForm.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>添加</title>
<style type="text/css">@IMPORT url("css/main.css");</style>
</head>
<body>
<div id="global">
<form action="product_save.action" method="post">
<fieldset>
<legend>添加：</legend>
<p>
<label for="name">名称: </label>
<input type="text" id="name" name="name" tabindex="1">
</p>
<p>
<label for="description">简介: </label>
<input type="text" id="description" name="description" tabindex="2">
</p>
<p>
<label for="price">价格: </label>
<input type="text" id="price" name="price" tabindex="3">
</p>
<p id="buttons">
<input id="reset" type="reset" tabindex="4">
<input id="submit" type="submit" tabindex="5" value="添加">
</p>
</fieldset>
</form>
</div>
</body>
</html>