SSM整合

Posted 2020-11-23 wnwn

基本概念

　　mybatis

　　　　MyBatis 本是apache的一个开源项目iBatis, 2010年这个项目由apache software foundation 迁移到了google code，并且改名为MyBatis 。MyBatis是一个基于Java的持久层框架。iBATIS提供的持久层框架包括SQL Maps和Data Access Objects（DAO）MyBatis 消除了几乎所有的JDBC代码和参数的手工设置以及结果集的检索。MyBatis 使用简单的 XML或注解用于配置和原始映射，将接口和 Java 的POJOs（Plain Old Java Objects，普通的 Java对象）映射成数据库中的记录。

　　spring

　　　　 Spring是一个开源框架，Spring是于2003 年兴起的一个轻量级的Java 开发框架，由Rod Johnson 在其著作Expert One-On-One J2EE Development and Design中阐述的部分理念和原型衍生而来。它是为了解决企业应用开发的复杂性而创建的。Spring使用基本的JavaBean来完成以前只可能由EJB完成的事情。然而，Spring的用途不仅限于服务器端的开发。从简单性、可测试性和松耦合的角度而言，任何Java应用都可以从Spring中受益。 简单来说，Spring是一个轻量级的控制反转（IoC）和面向切面（AOP）的容器框架。

　　spring mvc

　　　　Spring MVC属于SpringFrameWork的后续产品，已经融合在Spring Web Flow里面。Spring MVC 分离了控制器、模型对象、分派器以及处理程序对象的角色，这种分离让它们更容易进行定制。

SSM整合（以下实现登录功能）

　　步骤一：导入依赖　

<!-- https://mvnrepository.com/artifact/org.springframework/spring-beans -->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-beans</artifactId>
    <version>5.1.5.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>5.1.5.RELEASE</version>
</dependency>
<dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>1.2.16</version>
</dependency>
<dependency>
    <groupId>commons-logging</groupId>
    <artifactId>commons-logging</artifactId>
    <version>1.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver -->
<dependency>
    <groupId>org.aspectj</groupId>
    <artifactId>aspectjweaver</artifactId>
    <version>1.9.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-jdbc</artifactId>
    <version>5.1.5.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.38</version>
</dependency>
<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis</artifactId>
    <version>3.4.6</version>
</dependency>
<dependency>
    <groupId>org.mybatis.generator</groupId>
    <artifactId>mybatis-generator-core</artifactId>
    <version>1.3.2</version>
</dependency>
<!--引入需要的ehcache插件-->
<dependency>
    <groupId>net.sf.ehcache</groupId>
    <artifactId>ehcache</artifactId>
    <version>1.2.3</version>
</dependency>
<!--mybatis整合ehcache的jar-->
<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis-ehcache</artifactId>
    <version>1.0.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis-spring</artifactId>
    <version>1.3.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid</artifactId>
    <version>1.1.10</version>
</dependency>
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-api</artifactId>
    <version>1.7.25</version>
</dependency>
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
    <version>1.7.25</version>
    <scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/com.alibaba/fastjson -->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.2.47</version>
</dependency>

<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>5.1.5.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-web</artifactId>
    <version>5.1.5.RELEASE</version>
</dependency>
<dependency>
    <groupId>javaee</groupId>
    <artifactId>javaee-api</artifactId>
    <version>5</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core -->
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-core</artifactId>
    <version>2.9.8</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.9.8</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-io/commons-io -->
<dependency>
    <groupId>commons-io</groupId>
    <artifactId>commons-io</artifactId>
    <version>2.4</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-fileupload/commons-fileupload -->
<dependency>
    <groupId>commons-fileupload</groupId>
    <artifactId>commons-fileupload</artifactId>
    <version>1.3.1</version>
</dependency>
<dependency>
    <groupId>jstl</groupId>
    <artifactId>jstl</artifactId>
    <version>1.2</version>
</dependency>
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>javax.servlet-api</artifactId>
    <version>3.1.0</version>
    <scope>provided</scope>
</dependency>

View Code

　　步骤二：JDBC.properites文件

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/smbms?useUniCode=true&characterEncoding=utf-8
jdbc.username=root
jdbc.password=123

View Code

　　步骤三：applicationContext.xml文件

<!--扫描注解-->
    <context:component-scan base-package="com.ssm"/>
    <!--添加MVC支持-->
    <mvc:annotation-driven/>
    <!--配置视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
    <!--释放静态资源-->
    <!--<mvc:default-servlet-handler/>-->
    <!--加载配置文件-->
    <context:property-placeholder location="classpath:jdbc.properties"/>
    <!--配置数据源-->
    <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>
    <!--SqlSessionFactory-->
    <bean class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--加载数据源-->
        <property name="dataSource" ref="dataSource"/>
        <!--加载Mybatis配置文件-->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>
    <!--扫描Dao层-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.ssm.dao"/>
    </bean>
    <!--开启事务注解支持-->
    <tx:annotation-driven/>
    <!--事务管理器-->
    <bean class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

</beans>

View Code

　　步骤四:mybatis-config文件

<?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">
<!--根节点-->
<configuration>


    <settings>
        <!--log4j配置引入-->
        <setting name="logImpl" value="LOG4J"/>

    </settings>

    <!--设置别名-->
    <typeAliases>
        <!--全局设置别名:默认以类名作为别名-->
        <package name="com.ssm.entity"/>
    </typeAliases>


    <!--mappers 代表小配置集合-->
    <mappers>
        <!--<mapper resource="org/mybatis/example/BlogMapper.xml"/>-->
       <package name="com.ssm.dao"/>
    </mappers>

</configuration>

View Code

　　步骤五：web.xml文件

<!DOCTYPE web-app PUBLIC
        "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
        "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Archetype Created Web Application</display-name>
  <filter>
    <filter-name>characterEncodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <!--初始化参数-->
    <init-param>
      <param-name>encoding</param-name>
      <param-value>UTF-8</param-value>
    </init-param>
    <!--强制使用UTF-8编码-->
    <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>
  <!--中央调度器-->
  <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:applicationContext.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>

View Code

　　步骤六：实体类

package com.ssm.entity;
import java.io.Serializable;
import java.util.Date;
public class Smbms_User implements Serializable {
    private Integer id;
    private String usercode;
    private String username;
    private String userpassword;
    private Integer gender;
    private Date birthday;
    private String phone;
    private String address;
    private Integer userrole;
    private Integer createdby;
    private Date creationdate;
    private Integer modifyby;
    private Date modifydate;
    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getUsercode() {
        return usercode;
    }
    public void setUsercode(String usercode) {
        this.usercode = usercode == null ? null : usercode.trim();
    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username == null ? null : username.trim();
    }
    public String getUserpassword() {
        return userpassword;
    }
    public void setUserpassword(String userpassword) {
        this.userpassword = userpassword == null ? null : userpassword.trim();
    }

    public Integer getGender() {
        return gender;
    }

    public void setGender(Integer gender) {
        this.gender = gender;
    }

    public Date getBirthday() {
        return birthday;
    }

    public void setBirthday(Date birthday) {
        this.birthday = birthday;
    }

    public String getPhone() {
        return phone;
    }

    public void setPhone(String phone) {
        this.phone = phone == null ? null : phone.trim();
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address == null ? null : address.trim();
    }

    public Integer getUserrole() {
        return userrole;
    }

    public void setUserrole(Integer userrole) {
        this.userrole = userrole;
    }

    public Integer getCreatedby() {
        return createdby;
    }

    public void setCreatedby(Integer createdby) {
        this.createdby = createdby;
    }

    public Date getCreationdate() {
        return creationdate;
    }

    public void setCreationdate(Date creationdate) {
        this.creationdate = creationdate;
    }

    public Integer getModifyby() {
        return modifyby;
    }

    public void setModifyby(Integer modifyby) {
        this.modifyby = modifyby;
    }

    public Date getModifydate() {
        return modifydate;
    }

    public void setModifydate(Date modifydate) {
        this.modifydate = modifydate;
    }
}

View Code

　　步骤七：编写dao层

package com.ssm.dao;

import com.ssm.entity.Smbms_User;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;

@Repository
public interface Smbms_UserMapper {

    public Smbms_User login(@Param("user_code") String user_code, @Param("user_password") String user_password);

}

View Code

　　步骤八：编写dao.xml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.ssm.dao.Smbms_UserMapper" >

  <select id="login" resultType="Smbms_User">
    select * from smbms_user where userCode=#{user_code} and userPassword=#{user_password}
  </select>

</mapper>

View Code

　　步骤九：编写service业务接口层

package com.ssm.service;

import com.ssm.entity.Smbms_User;
import org.apache.ibatis.annotations.Param;

public interface Smbms_UserService {
    public Smbms_User login(String user_code,String user_password);
}

View Code

　　步骤十：编写serviceImpl业务实现层

package com.ssm.service.impl;

import com.ssm.dao.Smbms_UserMapper;
import com.ssm.entity.Smbms_User;
import com.ssm.service.Smbms_UserService;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Isolation;
import org.springframework.transaction.annotation.Transactional;

import javax.annotation.Resource;

@Service("smbms_UserService")
public class Smbms_UserServcieImpl implements Smbms_UserService {
    //植入Dao层对象
    @Resource
    private Smbms_UserMapper smbms_userMapper;

    //事务
   /* @Transactional(isolation=Isolation.DEFAULT)*/
    @Override
    public Smbms_User login(String user_code, String user_password) {
        return smbms_userMapper.login(user_code,user_password);
    }
}

View Code

　　步骤十一：编写控制器

package com.ssm.controller;

import com.ssm.entity.Smbms_User;
import com.ssm.service.Smbms_UserService;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.annotation.Resource;
import javax.servlet.http.HttpSession;

@Controller
@RequestMapping("/user")
public class Smbms_UserController {
    //植入Service层分对象
    @Resource
    private Smbms_UserService smbms_userService;

    @RequestMapping("/login")
    public String doLogin(Smbms_User smbms_user, HttpSession session){
        Smbms_User user = smbms_userService.login(smbms_user.getUsercode(), smbms_user.getUserpassword());
        if(user!=null){
            session.setAttribute("user",user);
            return "welcome";
        }
        return "login";
    }

}

View Code

　　步骤十二：页面

　　　　login.jsp页面

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>登陆</title>
</head>
<body>
    <div>
        <form action="/user/login" method="post">
            用户名：<input type="text" name="usercode"/>
            密码：<input type="password" name="userpassword"/>
            <input type="submit" value="登陆"/>
        </form>
    </div>
</body>
</html>

View Code

　　　　welcome.jsp页面

<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<html>
<head>
    <title>欢迎</title>
</head>
<body>
    欢迎光临：${user.username}
</body>
</html>

View Code

　　步骤十三：实现结果