原生SSM框架整合(没有使用Maven)

首先,SSM框架的整合除了需要各大框架本身的jar包之外,

还需要一个mybatis-spring的jar包,不然无法完成整合操作

首先来看整个项目的结构:

jsp文件夹:由于我们编写的jsp文件里面可能包含业务逻辑,因此为了保证安全性,将其放置在客户端无法访问的WEB-INF目录下

resource静态资源文件:由于静态资源一般都是些css,html或者JavaScript文件,客户端访问网站的时候回自动下载到客户机上,因此并没有安全性可言,所以我们不必将resource文件夹放置在WEB-INF目录下,只需将其放置在项目的根目录下即可

 Web.xml配置文件

<?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_4_0.xsd"
	id="WebApp_ID" version="4.0">
 
	<!-- Spring配置文件 -->
	<!-- 配置Spring配置文件的名称和路径 -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<!-- 配置Spring配置文件的完整路径 -->
		<param-value>classpath:com/config/Spring/Spring.xml</param-value>
	</context-param>
	<!-- 配置ContextLoaderListener监听器 -->
	<!-- 当 web项目启动的时候，会把 Spring IOC 容器获取到，并放入 application 域中 -->
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
	<!-- SpringMVC配置文件 -->
	<!-- 配置SpringMVC的拦截器DispatcherServlet类,用以拦截所有的URL请求 -->
	<servlet>
		<servlet-name>springMVC</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<!-- 若不配置<contextConfigureLocation>节点,则SpringMVC配置文件的命名规则必须满足 文件名-servlet.xml,比如你的配置文件名为:SpringMVC,那完整的文件名必须为:SpringMVC-servlet.xml 
			否则将无法扫描到对应的配置文件! -->
		<init-param>
			<!-- <contextConfigureLocation>节点配置的是SpringMVC配置文件的位置 -->
			<param-name>contextConfigLocation</param-name>
			<!-- "classpath:" 路径对应的是工程目录下的src文件 -->
			<!-- 我的SpringMVC文件放在com.config包下,所以对应的路径即为: classpath:com/config/SpringMVC/springMVC-servlet.xml -->
			<param-value>classpath:com/config/SpringMVC/springMVC-servlet.xml</param-value>
		</init-param>
		<!-- 这个配置是使DispatchServlet拦截器随着Web服务启动的时候启动,而不是当客户端发送请求时才启动 -->
		<load-on-startup>1</load-on-startup>
	</servlet>
	<!-- 配置<servlet-mapping>节点 -->
	<servlet-mapping>
		<!-- 注意:这里的<servlet-name>节点的值需要与<servlet>节点的值保持一致 -->
		<servlet-name>springMVC</servlet-name>
		<!-- 配置想要拦截的url请求格式, "/" 表示拦截所有请求 -->
		<url-pattern>/</url-pattern>
	</servlet-mapping>
	<!-- 过滤器,用于处理表单传值中的POST方式传值出现的中文乱码 -->
	<filter>
		<filter-name>characterEncodingFilter</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>
		<init-param>
			<param-name>forceEncoding</param-name>
			<param-value>true</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>characterEncodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
</web-app>

Spring配置文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
	<!-- 这个是Spring的配置文件 -->
	<!-- 开启Spring的注解,若不添加该项,将来使用@Autowired注解时会报错-->
 	<context:annotation-config />
 	<!-- 扫描包,将指定包下的含有特殊注解的对象(如@Component,@Service等...)交给Spring IOC容器管理 -->
    <context:component-scan base-package="com.service" />
	
	
	<!-- 配置数据源 -->
	<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
		<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
		<property name="url" value="jdbc:mysql://localhost:3306/shop?characterEncoding=UTF-8&amp;useSSL=false"></property>
		<property name="username" value="root"></property>
		<property name="password" value="admin"></property>
	</bean>
	
	<!-- 配置sqlSession属性 -->
	<bean id="sqlSession" class="org.mybatis.spring.SqlSessionFactoryBean">
		<!--  typeAliasesPackage：它一般对应我们的实体类所在的包，这个时候会自动取对应包中不包括包名的
			简单类名作为包括包名的别名。多个package之间可以用逗号或者分号等来进行分隔。(value的值一定要是包的全名) -->
		<property name="typeAliasesPackage" value="com.pojo"></property>
		<!-- 这个属性是必须的 -->
		<property name="dataSource" ref="dataSource"></property>
		<!-- mappLocations: 它表示我们存放Mapper.xml文件的位置 -->
		<property name="mapperLocations" value="classpath:com/mapper/*.xml"></property>
	</bean>
	
	
	<!--  自动扫描 将Mapper接口生成代理注入到Spring Mybatis在与Spring集成的时候可以配置MapperFactoryBean来生成Mapper接口的代理 -->
	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<property name="basePackage" value="com.mapper"></property>
	</bean>
 
</beans>

SpringMVC配置文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
	<context:annotation-config/>
	<!-- 自动扫描包,我们只扫描com.controller包下的类即可,其他的由Spring配置文件管理即可 -->
	<context:component-scan base-package="com.controller"></context:component-scan>

    <!-- 注解驱动（代替了处理器映射器和处理器适配器） -->
	<mvc:annotation-driven/>
	
	<!-- 处理静态资源请求 -->
	<mvc:default-servlet-handler/>
	
	<!-- 配置视图解析器 -->
	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/jsp/"></property>
		<property name="suffix" value=".jsp"></property>
	</bean>
 
</beans>

数据表脚本代码:

CREATE TABLE `s_user` (
  `userid` int(11) NOT NULL AUTO_INCREMENT,
  `username` varchar(255) DEFAULT NULL,
  `password` varchar(255) DEFAULT NULL,
  `email` varchar(255) DEFAULT NULL,
  `phone` varchar(255) DEFAULT NULL,
  `status` varchar(255) NOT NULL DEFAULT '0',
  `code` varchar(255) DEFAULT NULL,
  PRIMARY KEY (`userid`)
) ENGINE=InnoDB AUTO_INCREMENT=16 DEFAULT CHARSET=utf8;

实体类(即POJO)User:

package com.pojo;
 
public class User {
	
	private Integer userid;
	private String username;
	private String password;
	private String email;
	private String phone;
	private Integer status;
	private String code;
	public Integer getUserid() {
		return userid;
	}
	public void setUserid(Integer userid) {
		this.userid = userid;
	}
	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 String getEmail() {
		return email;
	}
	public void setEmail(String email) {
		this.email = email;
	}
	public String getPhone() {
		return phone;
	}
	public void setPhone(String phone) {
		this.phone = phone;
	}
	public Integer getStatus() {
		return status;
	}
	public void setStatus(Integer status) {
		this.status = status;
	}
	public String getCode() {
		return code;
	}
	public void setCode(String code) {
		this.code = code;
	}
	@Override
	public String toString() {
		return "User [userid=" + userid + ", username=" + username + ", password=" + password + ", email=" + email
				+ ", phone=" + phone + ", status=" + status + ", code=" + code + "]";
	}
}

UserMapper.xml配置文件:

<?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.mapper.UserMapper">
	<select id="getAllUsers" resultType="User">
		SELECT * FROM s_user
	</select>
	<select id="getUserById" parameterType="int" resultType="User">
		SELECT *
		FROM s_user WHERE userid = #{userid}
	</select>
	<insert id="insertUser" parameterType="User"
		useGeneratedKeys="true" keyProperty="userid">
		INSERT INTO s_user(username,password,email,phone)
		VALUES(#{username},#{password},#{email},#{phone})
	</insert>
	<update id="updateUserById" parameterType="User">
		UPDATE s_user SET username = #{username},
						  password = #{password},
						  email = #{email},
						  phone = #{phone}
						  WHERE 
						  userid = #{userid}
	</update>
	<delete id="deleteUserById" parameterType="int">
		DELETE  FROM s_user WHERE userid = #{userid}
	</delete>
</mapper>

UserMapper.java接口:

package com.mapper;
 
import com.pojo.User;
import java.util.*;
 
public interface UserMapper {
	public List<User> getAllUsers();
 
	public User getUserById(int userid);
 
	public boolean deleteUserById(int userid);
 
	public boolean insertUser(User user);
 
	public boolean updateUserById(User user);
}

注意:XXMapper.xml配置文件和XXMapper.java接口必须放置在同一包下,否则初始化Spring的时候可能会报错;

业务逻辑层

1.UserService接口:

package com.service;
 
import com.pojo.User;
import java.util.*;
 
public interface UserService {
	public List<User> getAllUsers();
 
	public User getUserById(int userid);
 
	public boolean deleteUserById(int userid);
 
	public boolean insertUser(User user);
 
	public boolean updateUserById(User user);
}

2.UserServiceImpl接口实现类:

package com.service.impl;
 
import java.util.List;
 
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
 
import com.mapper.UserMapper;
import com.pojo.User;
import com.service.UserService;
 
//使用@Service注解标记该类,表明该类属于业务逻辑层,并由Spring IOC容器接手其生命周期
@Service
public class UserServiceImpl implements UserService {
	//使用@Autowired注解标记该对象后,在之后使用该对象则会有IOC分配,无需手动new出来;
	@Autowired
	UserMapper userMapper;
	
	@Override
	public List<User> getAllUsers() {
		// TODO Auto-generated method stub
		return userMapper.getAllUsers();
	}
 
	@Override
	public User getUserById(int userid) {
		
		// TODO Auto-generated method stub
		return userMapper.getUserById(userid);
	}
 
	@Override
	public boolean deleteUserById(int userid) {
		// TODO Auto-generated method stub
		return userMapper.deleteUserById(userid);
	}
 
	@Override
	public boolean insertUser(User user) {
		// TODO Auto-generated method stub
		return userMapper.insertUser(user);
	}
 
	@Override
	public boolean updateUserById(User user) {
		// TODO Auto-generated method stub
		return userMapper.updateUserById(user);
	}
 
	
	
}

Controller控制层

1.UserController控制器类

package com.controller;
 
import java.util.List;
import java.util.Map;
 
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;
 
import com.pojo.User;
import com.service.UserService;
import com.service.impl.UserServiceImpl;
 
//使用@Controller注解标注该类,表明此类为控制器类;
@Controller
public class UserController {
	@Autowired
	UserService userService;
	@RequestMapping(value="/user")
	public String user(Map<Object,Object> map) {
		
		List<User> userList =  userService.getAllUsers();
		map.put("user", userList);
		return "user";
		
	}
	
	
}

user.jsp:

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>User</title>
</head>
<body>
	<h1>${requestScope.user}</h1>
</body>
</html>

启动服务器并打开浏览器,在浏览器地址栏输入:

http://localhost:8080/Shop/user

得到以下结果:

至此,最基础的SSM框架搭建完成,后续学习了Maven可以再用Maven搭建一次SSM框架~~~

转自：https://blog.csdn.net/weixin_39549527/article/details/81089435