Spring、MyBatis与Spring框架的整合

2021-08-11 10:53:11 浏览数 (1)

实验目的：

  1. 掌握Spring、MyBatis以及SpringMVC框架的使用。
  2. 掌握SSM框架的整合步骤，环境搭建，整合思路。
  3. 掌握SSM框架整合时的配置文件内容。
  4. 掌握SSM框架整合应用程序的编写。

实验内容及步骤：

1）在src目录下，创建com.itheima.po包，并在包中创建持久化类Customer：

2）在src目录下，创建一个com.itheima.dao包，并在包中创建接口文件CustomerDao以及对应的映射文件CustomerDao.xml

3）在src目录下，创建com.itheima.service包，然后在包中创建接口文件CustomerService，并在CustomerService中定义通过id查询客户的方法

4）在src目录下，创建一个com.itheima.service.impl包，并在包中创建CustomerService接口的实现类CustomerServiceImpl

5）在src目录下，创建一个com.itheima.controller包，并在包中创建用于处理页面请求的控制类CustomerController：

6）在WEB-INF目录下，创建一个jsp文件夹，在该文件夹下创建一个用于展示客户详情的页面文件customer.jsp：

7）将项目发布到Tomcat服务器并启动，在浏览器中访问地址http://localhost:8080/chapter17/findCustomerById?id=1，显示效果如下所示：

实验代码：

代码语言：javascript复制
//Customer.java
package com.xzk.po;

public class Customer {
	private Integer id;
	private String username;
	private String jobs;
	private String phone;
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public String getUsername() {
		return username;
	}
	public void setUsername(String username) {
		this.username = username;
	}
	public String getJobs() {
		return jobs;
	}
	public void setJobs(String jobs) {
		this.jobs = jobs;
	}
	public String getPhone() {
		return phone;
	}
	public void setPhone(String phone) {
		this.phone = phone;
	}
	
}

//CustomerDao.java
package com.xzk.dao;

import com.xzk.po.Customer;

public interface CustomerDao {
	public Customer findCustomerById(Integer id) ;
}

//CustomerDao.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
    "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.xzk.dao.CustomerDao">
	<!--根据id查询客户信息 -->
	<select id="findCustomerById" parameterType="Integer"
		                               resultType="Customer">
		select * from t_customer where id = #{id}
	</select>
</mapper>

//CustomerConrroller.java
package com.xzk.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import com.xzk.po.Customer;
import com.xzk.service.CustomerService;

@Controller
public class CustomerController {
	@Autowired
	private CustomerService customerService;
	/**
	 * 根据id查询客户详情
	 */
	@RequestMapping("/findCustomerById")
	public String findCustomerById(Integer id,Model model) {
		Customer customer = customerService.findCustomerById(id);
		model.addAttribute("customer", customer);
		//返回客户信息展示页面
		return "customer";
	}
}

//CustomerService.java
package com.xzk.service;

import com.xzk.po.Customer;

public interface CustomerService {
	public Customer findCustomerById(Integer id);
}

//CustomerServiceImpl.java
package com.xzk.service;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.xzk.dao.CustomerDao;
import com.xzk.po.Customer;

@Service
@Transactional
public class CustomerServiceImpl {
	//注解注入CustomerDao
		@Autowired
		private CustomerDao customerDao;
		//查询客户
		public Customer findCustomerById(Integer id) {
			return this.customerDao.findCustomerById(id);
		}
}

//Web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
  	xmlns="http://xmlns.jcp.org/xml/ns/javaee" 
  	xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee 
  	http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" 
  	id="WebApp_ID" version="3.1">
  	<!-- 配置加载Spring文件的监听器-->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:applicationContext.xml</param-value>
	</context-param>
	<listener>
		<listener-class>     org.springframework.web.context.ContextLoaderListener
		</listener-class>
	</listener>
	<!-- 编码过滤器 -->
	<filter>
		<filter-name>encoding</filter-name>
		<filter-class>		     org.springframework.web.filter.CharacterEncodingFilter
		</filter-class>
		<init-param>
			<param-name>encoding</param-name>
			<param-value>UTF-8</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>encoding</filter-name>
		<url-pattern>*.action</url-pattern>
	</filter-mapping>
	<!-- 配置Spring MVC前端核心控制器 -->
	<servlet>
		<servlet-name>springmvc</servlet-name>
		<servlet-class>
		     org.springframework.web.servlet.DispatcherServlet
		</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:springmvc-config.xml</param-value>
		</init-param>
		<!-- 配置服务器启动后立即加载Spring MVC配置文件 -->
    	<load-on-startup>1</load-on-startup>
	</servlet>
	<servlet-mapping>
		<servlet-name>springmvc</servlet-name>
		<!--/:拦截所有请求（除了jsp）-->
		<url-pattern>/</url-pattern>
	</servlet-mapping>
</web-app>

//customer.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>客户信息界面</title>
</head>
<body>
	<table border=1>
		<tr>
			<td>编号</td>
			<td>名称</td>
			<td>职业</td>
			<td>电话</td>
		</tr>
		<tr>
			<td>${customer.id}</td>
			<td>${customer.username}</td>
			<td>${customer.jobs}</td>
			<td>${customer.phone}</td>
		</tr>
	</table>
</body>
</html>
spring jsp java

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