SpringMVC和Spring的结合方式一

浅浅的花香味﹌ 2022-05-11 03:52 138阅读 0赞

*  案例：一个简单注册页，提交后到SpringMVC的Controller，它里面调用业务层注册方法（结合Spring），service层仅用spring的JdbcTemplate往person表插入一条数据，从而实现简单注册。（这里直接忽略了DAO层）  
    结合方式1：配置文件（无注解的方式）  
    web.xml

<?xml version="1.0" encoding="UTF-8"?>
    <web-app version="2.4" 
    	xmlns="http://java.sun.com/xml/ns/j2ee" 
    	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    	xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
    	http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
      <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
      </welcome-file-list>
      
      
      
      <servlet>
      	<servlet-name>springMVC</servlet-name>
      	<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
      	<load-on-startup>0</load-on-startup> 
      </servlet> 
      <servlet-mapping>
      	<servlet-name>springMVC</servlet-name>
      	<url-pattern>/</url-pattern>
      </servlet-mapping>
      
    </web-app>

springMVC-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
    http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
    ">
    
    
    
    
    <bean id="myDataSource" class="org.apache.commons.dbcp.BasicDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/test"/>
        <property name="username" value="root"/>
        <property name="password" value="root1205"/>
        <property name="defaultAutoCommit" value="true"/>
    </bean>
    
    
    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        
        <property name="dataSource" ref="myDataSource"></property>
    </bean>
    
    
    
    
    <bean name="/reg/*" class="com.controller.RegController">
    	<property name="personService" ref="personService"></property>
    </bean>
    
    
    <bean id="personService" class="com.service.PersonService">
    	<property name="jdbcTemplate" ref="jdbcTemplate"></property>
    	
    </bean>
    
    </beans>

reg.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <!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>简单注册页</title>
    <style type="text/css">
    *{margin:0;padding:0;list-style:none}
    body{
    	background:#484D61;
    	font-family:微软雅黑;
    	font-size: 13px;
    }
    #out{
    	width: 250px;
    	height: 170px;
    	margin: 150px auto;
    	border-radius: 5px;
    	background: white;
    	padding-top: 30px;
    }
    #out ul li{
    	height: 40px;
    	line-height: 50px;
    	width: 250px;
    	text-align: center;
    }
    #out ul li.sex{
    	text-align: left;
    	padding-left: 15px;
    }
    
    input[type='text'],input[type='password']{
    	width: 220px;
    	height: 25px;
    	border: none;
    	border-bottom: 1px solid gray;
    }
    input[type='radio']{
    	margin: 5px;
    }
    input[type='submit']{
    	width: 220px;
    	height: 25px;
    	border: none;
    	border-radius: 5px;
    	background: #43495F;
    	color: white;
    	font-size: 12px;
    }
    </style>
    </head>
    <body>
    <div id="out">
    	<form action="reg/save" method="post">
    	<ul>
    		<li><input type="text" placeholder="请输入用户名" name="name"/></li>
    		<li><input type="password" placeholder="请输入密码" name="pwd"/></li>
    		<li class="sex"><span>性别：</span>
    			<input type="radio" name="sex" value="男" checked/>男
    			<input type="radio" name="sex" value="女"/>女
    		</li>
    		<li><input type="submit" value="注册"/></li>
    	</ul>
    	</form>
    </div>
    </body>
    </html>

RegController.java

package com.controller;
    
    import java.io.IOException;
    import java.io.UnsupportedEncodingException;
    
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    import org.springframework.web.servlet.mvc.multiaction.MultiActionController;
    
    import com.entity.Person;
    import com.service.PersonService;
    
    public class RegController extends MultiActionController {
    	
    	//与spring结合，这里我就不用new PersonService，而是通过配置文件注入
    	
    	private PersonService personService;
    	
    /*	@Override
    	protected ModelAndView handleRequestInternal(HttpServletRequest arg0,
    			HttpServletResponse arg1) throws Exception {
    		System.out.println("请求了吗？");
    		return null;
    	}*/
    	
    	public PersonService getPersonService() {
    		return personService;
    	}
    
    
    
    	public void setPersonService(PersonService personService) {
    		this.personService = personService;
    	}
    
    
    
    	public void save(HttpServletRequest request,HttpServletResponse response){
    		try {
    			request.setCharacterEncoding("UTF-8");
    			response.setCharacterEncoding("UTF-8");
    			response.setContentType("text/html;charset=UTF-8");
    		} catch (UnsupportedEncodingException e) {
    			e.printStackTrace();
    		}
    		String name = request.getParameter("name");
    		String pwd = request.getParameter("pwd");
    		String sex = request.getParameter("sex");
    		Person p = new Person();
    		p.setName(name);
    		p.setPwd(pwd);
    		p.setSex(sex);
    		//System.out.println(personService);//测试一下有没有拿到
    		if(personService.register(p)){
    			try {
    				response.getWriter().print("注册成功！");
    			} catch (IOException e) {
    				e.printStackTrace();
    			}
    		}
    	}
    	
    }

IPersonService.java

package com.service;
    
    import com.entity.Person;
    
    public interface IPersonService {
    	
    	public boolean register(Person person);
    
    }

PersonService.java

package com.service;
    
    import org.springframework.jdbc.core.JdbcTemplate;
    
    import com.entity.Person;
    
    public class PersonService implements IPersonService {
    	
    	private JdbcTemplate jdbcTemplate;
    	
    	
    	
    	public JdbcTemplate getJdbcTemplate() {
    		return jdbcTemplate;
    	}
    
    
    
    	public void setJdbcTemplate(JdbcTemplate jdbcTemplate) {
    		this.jdbcTemplate = jdbcTemplate;
    	}
    
    
    
    	@Override
    	public boolean register(Person person) {
    		try{
    			jdbcTemplate.execute("INSERT INTO person(name,age,sex)VALUES('"+person.getName()+"','"+person.getAge()+"','"+person.getSex()+"')");
    		} catch(Exception e){
    			return false;
    		}
    		return true;
    	}
    
    }

结果：  
![在这里插入图片描述][70]  
![在这里插入图片描述][70 1]  
![在这里插入图片描述][70 2]

[70]: /images/20220511/e42f484ad73742779fda2d3f19106770.png
[70 1]: /images/20220511/2e7efe07f6074a78b0a2d9fb21e58874.png
[70 2]: /images/20220511/ebf820d6dd7f4146ba811b1cd1c171ef.png