spring mvc —— 简单的Spring MVC应用 3（1）

╰+攻爆jí腚メ 2022-06-02 04:54 268阅读 0赞

<dependencies>
    		<dependency>
    			<groupId>javax.servlet</groupId>
    			<artifactId>javax.servlet-api</artifactId>
    			<version>3.1.0</version>
    			<scope>provided</scope>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-webmvc</artifactId>
    			<version>4.2.4.RELEASE</version>
    		</dependency>
    		<dependency>
    			<groupId>javax.servlet</groupId>
    			<artifactId>jstl</artifactId>
    			<version>1.2</version>
    			<scope>runtime</scope>
    		</dependency>
    	</dependencies>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
    <web-app version="3.1" 
    		xmlns="http://xmlns.jcp.org/xml/ns/javaee" 
        	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
        	xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee 
    			http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
    > 
    	<servlet>
            <servlet-name>springmvc</servlet-name>
            <servlet-class>
                org.springframework.web.servlet.DispatcherServlet
            </servlet-class>
            <load-on-startup>1</load-on-startup>
        </servlet>
    
        <servlet-mapping>
            <servlet-name>springmvc</servlet-name>
            <url-pattern>/</url-pattern>
        </servlet-mapping>
        
    </web-app>

servlet dispatcher——springmvc-servlet 固定写法 默认WEB-INF下， \-servlet 前缀同 web.xml servlet-name

<servlet-name>springmvc</servlet-name>

![Image 1][] ![Center][]

<?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="/input-product" class="controller.InputProductController"/>
        <bean name="/save-product" class="controller.SaveProductController"/>
    
    </beans>

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 domain.Product;
    import form.ProductForm;
    
    public class SaveProductController implements Controller {
    
        private static final Log logger = LogFactory
                .getLog(SaveProductController.class);
    
        @Override
        public ModelAndView handleRequest(HttpServletRequest request,
                HttpServletResponse response) throws Exception {
            logger.info("SaveProductController called");
            ProductForm productForm = new ProductForm();
            // populate action properties
            productForm.setName(request.getParameter("name"));
            productForm.setDescription(request.getParameter("description"));
            productForm.setPrice(request.getParameter("price"));
    
            // create model
            Product product = new Product();
            product.setName(productForm.getName());
            product.setDescription(productForm.getDescription());
            try {
                product.setPrice(Float.parseFloat(productForm.getPrice()));
            } catch (NumberFormatException e) {
            }
    
            // insert code to save Product
    
            return new ModelAndView("/WEB-INF/jsp/ProductDetails.jsp", "product",
                    product);
        }
    
    }

![Center 1][]

源码 ： [https://github.com/kaifengxu/spring-mvc-xuexizhinan/tree/master/chapter-03/sts/springmvc-intro1][https_github.com_kaifengxu_spring-mvc-xuexizhinan_tree_master_chapter-03_sts_springmvc-intro1]

[Image 1]: 
[Center]: /images/20220602/7336eef8ab314b0f9d48180c9c8277af.png
[Center 1]: /images/20220602/1d50275c883a495b9d3fd64e084c1158.png
[https_github.com_kaifengxu_spring-mvc-xuexizhinan_tree_master_chapter-03_sts_springmvc-intro1]: https://github.com/kaifengxu/spring-mvc-xuexizhinan/tree/master/chapter-03/sts/springmvc-intro1