框架整合

ssm框架整合

项目总览

1.首先先创建个web项目，然后再在pom.xml文件中导入对应的依赖

（如果不会创建web项目，请点击这里）

pom.xml需要导入的依赖：

 <dependencies>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.2.8.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.2.8.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.2</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.1</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.49</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.20</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>5.2.8.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.2.8.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.1</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.13.2</version>
            <scope>compile</scope>
        </dependency>
    </dependencies>

2.根据项目需求建个包，在该包下分别建立controller、dao、pojo、service四个包

根据题目需求分别在这四个包中建立分别的类

controller包中的UserController类代码：

package com.ssm.together.controller;

import com.ssm.together.pojo.User;
import com.ssm.together.service.UserServiceImpl;
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.servlet.ModelAndView;

import javax.annotation.Resource;

@Controller
public class UserController {
    @Resource
    private UserServiceImpl userService;

    @RequestMapping(value = "/toLogin", method = RequestMethod.GET)
    public String toLogin(){
        return "login";
    }

    @RequestMapping(value = "/login", method = RequestMethod.POST)
    public String login(User user){
        if(userService.checkUser(user)){
            return "success";
        }else{
            return "login";
        }
    }
}

dao包中IUserMapper类代码：

package com.ssm.together.dao;

import com.ssm.together.pojo.User;
import org.apache.ibatis.annotations.Result;
import org.apache.ibatis.annotations.Results;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;

@Repository
public interface IUserMapper {
    @Select("select * from user where user_name= #{user_name} and user_password = #{user_password}")
    public User check(User user);
}

pojo包中User类代码：

package com.ssm.together.pojo;

public class User {
    private int user_id;
    private String user_name;
    private String user_password;

    public int getUser_id() {
        return user_id;
    }

    public void setUser_id(int user_id) {
        this.user_id = user_id;
    }

    public String getUser_name() {
        return user_name;
    }

    public void setUser_name(String user_name) {
        this.user_name = user_name;
    }

    public String getUser_password() {
        return user_password;
    }

    public void setUser_password(String user_password) {
        this.user_password = user_password;
    }

    @Override
    public String toString() {
        return "User{" +
                "user_id=" + user_id +
                ", user_name='" + user_name + '\'' +
                ", user_password='" + user_password + '\'' +
                '}';
    }
}

service包中UserServiceImpl类代码：

package com.ssm.together.service;

import com.ssm.together.dao.IUserMapper;
import com.ssm.together.pojo.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class UserServiceImpl implements UserService{
    @Autowired
    private IUserMapper iUserMapper;

    public Boolean checkUser(User user){
        return iUserMapper.check(user) != null;
    }
}

3.创建resources文件夹中的一些配置文件

记得要将里面一些扫描的包改成自己项目中的包

applicationContext.xml中内容：

<?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:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="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.xsd
	   http://www.springframework.org/schema/aop
	   http://www.springframework.org/schema/aop/spring-aop.xsd
	   http://www.springframework.org/schema/tx
	   http://www.springframework.org/schema/tx/spring-tx.xsd">
    <!--开启注解扫描，扫描service包，将加有对应注解的类控制反转-->
    <context:component-scan base-package="com.ssm.together.service"></context:component-scan>
    <!--关联数据库-->
    <context:property-placeholder location="classpath:db.properties"/>
    <!--配置阿里开源连接池：Druid连接池-->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="driverClassName" value="${jdbc.driver}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>

    <!--Spring框架整合Mybatis框架，SqlSessionFactoryBean就是负责整合的类，
        把该类控制反转，将dao层生成的代理对象，也进行控制反转，即可使Spring操作MyBatis对象
    -->
    <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--注入连接池对象-->
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--扫描dao内的包，生成代理对象-->
        <property name="basePackage" value="com.ssm.together.dao"/>
    </bean>


</beans>

db.properties文件内容：

jdbc.driver = com.mysql.jdbc.Driver
jdbc.url = jdbc:mysql://localhost:3306/chapter03?useUnicode=true&characterEncoding=utf-8
jdbc.username = root
jdbc.password = zeng1231

mybatis-config.xml内容：

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <mappers>
        <package name="com.ssm.together.dao"/>
    </mappers>
</configuration>

4.修改在WEB-INf文件夹下的web.xml内容和创建一个springmvc-config.xml文件

记得将扫描该项目的包改成自己项目中的包

web.xml内容：

<?xml version="1.0" encoding="UTF-8"?>
<web-app 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_4_0.xsd"
         version="4.0">
    <!--配置spring监听器,默认只加载WEB-INF目录下的applicationContext.xml配置文件-->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!--设置配置文件的路径-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>
    <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/springmvc-config.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>

springmvc-config.xml内容：

<?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: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/context https://www.springframework.org/schema/context/spring-context.xsd">

    <context:component-scan base-package="com.ssm.together.controller"/>
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
</beans>

5.在WEB-INf文件夹下创建一个名字是jsp的包，在jsp包中创建一个login.jsp和一个success.jsp包

login.jsp内容：

<%--
  Created by IntelliJ IDEA.
  User: 86136
  Date: 2022/5/24
  Time: 20:24
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>login</title>
</head>
<body>
    <form action="${pageContext.request.contextPath}/login" method="post">
        登录名：<input type="text" name="user_name" id="username"><br/>
        密码：<input type="password" name="user_password" id="password"><br/>
        <input type="submit" value="登录">
    </form>
</body>
</html>

success.jsp内容：

<%--
  Created by IntelliJ IDEA.
  User: 86136
  Date: 2022/5/24
  Time: 17:21
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>success</title>
</head>
<body>
    success!
</body>
</html>

6.最后将该项目配置到tomcat中去运行即可，😉