SpringMVC（八）：SSM整合

原创

Lansonli

发布于 2022-12-27 00:50:46

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发布于 2022-12-27 00:50:46

文章被收录于专栏：Lansonli技术博客

SSM整合

登录案例开发

一、准备数据库表格

二、创建maven web项目并补充项目结构，准备好MVC模式下的主要目录

三、更新web.xml 文件和准备包结构

<?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">
  
</web-app>

四、导入依赖

    <dependencies>
    <!--spring核心容器包-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>5.3.5</version>
    </dependency>
    <!--spring切面包-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aspects</artifactId>
      <version>5.3.5</version>
    </dependency>
    <!--aop联盟包-->
    <dependency>
      <groupId>aopalliance</groupId>
      <artifactId>aopalliance</artifactId>
      <version>1.0</version>
    </dependency>
    <!--德鲁伊连接池-->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>1.1.10</version>
    </dependency>
    <!--mysql驱动-->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>8.0.22</version>
    </dependency>
    <!--springJDBC包-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.3.5</version>
    </dependency>
    <!--spring事务控制包-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>5.3.5</version>
    </dependency>
    <!--spring orm 映射依赖-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-orm</artifactId>
      <version>5.3.5</version>
    </dependency>
    <!--Apache Commons日志包-->
    <dependency>
      <groupId>commons-logging</groupId>
      <artifactId>commons-logging</artifactId>
      <version>1.2</version>
    </dependency>
    <!--log4j2 日志-->
    <dependency>
      <groupId>org.apache.logging.log4j</groupId>
      <artifactId>log4j-slf4j-impl</artifactId>
      <version>2.14.0</version>
      <scope>test</scope>
    </dependency>
    <!--lombok -->
    <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
      <version>1.18.12</version>
      <scope>provided</scope>
    </dependency>
    <!--spring test测试支持包-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>5.3.5</version>
      <scope>test</scope>
    </dependency>
    <!--junit5单元测试-->
    <dependency>
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter-api</artifactId>
      <version>5.7.0</version>
      <scope>test</scope>
    </dependency>
    <!--springMVC支持包-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>5.3.5</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.3.5</version>
    </dependency>
    <!--jsp 和Servlet  可选-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>4.0.1</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>javax.servlet.jsp-api</artifactId>
      <version>2.3.3</version>
      <scope>provided</scope>
    </dependency>
    <!--json依赖-->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.12.1</version>
    </dependency>
    <!--mybatis 核心jar包-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.5.3</version>
    </dependency>
    <!--spring mybatis整合包-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>2.0.3</version>
    </dependency>
  </dependencies>

接下来准备配置文件（重要）

五、log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="DEBUG">
    <Appenders>
        <Console name="Console" target="SYSTEM_ERR">
            <PatternLayout pattern="%d{YYYY-MM-dd HH:mm:ss} [%t] %-5p %c{1}:%L - %msg%n" />
        </Console>
    </Appenders>
    <Loggers>
        <Root level="DEBUG">
            <AppenderRef ref="Console" />
        </Root>
    </Loggers>
</Configuration>

六、jdbc.properties

jdbc_driver=com.mysql.cj.jdbc.Driver
jdbc_url=jdbc:mysql://127.0.0.1:3306/mydb?useSSL=false&useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai
jdbc_username=root
jdbc_password=root

七、springMVC.xml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:p="http://www.springframework.org/schema/p"
       xmlns:c="http://www.springframework.org/schema/c"
       xmlns:util="http://www.springframework.org/schema/util"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="
       http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/util
       http://www.springframework.org/schema/util/spring-util.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
       http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd
">
    <!--扫描controller-->
    <context:component-scan base-package="com.lanson.controller"></context:component-scan>
    <!--这里配置三大组件-->
    <mvc:annotation-driven />
    <!--视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    </bean>
    <!--配置静态资源放行-->
    <!--<mvc:resources mapping="/js/**" location="/js/"></mvc:resources>-->
    <!--<mvc:resources mapping="/css/**" location="/css/"></mvc:resources>-->
    <!--<mvc:resources mapping="/img/**" location="/img/"></mvc:resources>-->
    <!--<mvc:resources mapping="/static/**" location="/static/"></mvc:resources>-->
</beans>

八、applicationContext.xml

<?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:p="http://www.springframework.org/schema/p"
       xmlns:c="http://www.springframework.org/schema/c"
       xmlns:util="http://www.springframework.org/schema/util"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="
       http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/util
       http://www.springframework.org/schema/util/spring-util.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
       http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd
">
    <!--加载外部属性文件-->
    <context:property-placeholder location="classpath:jdbc.properties"></context:property-placeholder>
    <!--扫描service层-->
    <context:component-scan base-package="com.lanson.service"></context:component-scan>
    <!--配置德鲁伊数据源-->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="username" value="${jdbc_username}"></property>
        <property name="password" value="${jdbc_password}"></property>
        <property name="url" value="${jdbc_url}"></property>
        <property name="driverClassName" value="${jdbc_driver}"></property>
    </bean>
    <!--配置sqlSessionFactory-->
    <bean id="factory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource"  ref="dataSource"></property>
        <property name="typeAliasesPackage" value="com.lanson.pojo"></property>
    </bean>
    <!--配置MapperScanner 扫描mapper.xml 和接口-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--配置SQLSessionFactory-->
        <property name="sqlSessionFactoryBeanName" value="factory"></property>
        <!--扫描mapper-->
        <property name="basePackage" value="com.lanson.mapper"></property>
    </bean>
    <!--配置事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!--开启事务注解-->
    <tx:annotation-driven  transaction-manager="transactionManager"/>
</beans>

九、web.xml

<?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">
    <!--spring核心配置文件位置-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applictionContext.xml</param-value>
    </context-param>
    <!--spring Listener-->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!--编码过滤器-->
    <filter>
        <filter-name>encFilter</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>encFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <!--DispatcherServlet-->
    <servlet>
        <servlet-name>dispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>

十、开发业务代码

index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
    <form action="login.do" method="post">
        <input type="text" name="uname">
        <input type="password" name="password">
        <input type="submit" value="登录">
    </form>
</body>
</html>

success.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
 登录成功
</body>
</html>

fail.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
登录失败
</body>
</html>

User实体类

package com.lanson.pojo;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import java.io.Serializable;
/**
 * @Author: Lansonli
 * @Description: MircoMessage:Mark_7001
 */
@AllArgsConstructor
@NoArgsConstructor
@Data
public class User implements Serializable {
    private Integer uid;
    private String  uname;
    private String password;
}

UserController

package com.lanson.controller;
import com.lanson.pojo.User;
import com.lanson.service.UserService;
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.ResponseBody;
import java.util.List;
/**
 * @Author: Lansonli
 * @Description: MircoMessage:Mark_7001
 */
@Controller
public class UserController {
    @Autowired
    private UserService userService;
    @RequestMapping("login.do")
    public String login(String uname,String password){
        String view =null;
        User user = userService.findUser(uname, password);
        if(null != user){
            view ="/success.jsp";
        }else{
            view="/fail.jsp";
        }
        return view;
    }
    @ResponseBody
    @RequestMapping("findAllUser.do")
    public List<User> findAllUser(){
        return userService.findAllUser();
    }
}

UserService

package com.lanson.service.impl;
import com.lanson.mapper.UserMapper;
import com.lanson.pojo.User;
import com.lanson.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.util.List;
/**
 * @Author: Lansonli
 * @Description: MircoMessage:Mark_7001
 */
@Service
@Transactional
public class UserServiceImpl implements UserService {
    @Autowired
    private UserMapper userMapper;
    @Override
    public User findUser(String uname, String password) {
        return userMapper.findUser(uname,password);
    }
    @Override
    public List<User> findAllUser() {
        return userMapper.findAllUser();
    }
}

UserMapper

package com.lanson.mapper;
import com.lanson.pojo.User;
import java.util.List;
/**
 * @Author: Lansonli
 * @Description: MircoMessage:Mark_7001
 */
public interface UserMapper {
    User findUser(String uname, String password);
    List<User> findAllUser();
}

UserMapper.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.lanson.mapper.UserMapper">
    <!--User findUser(String uname, String password);-->
    <select id="findUser" resultType="user">
        select * from user where uname =#{param1} and password =#{param2}
    </select>
    <!--findAllUser-->
    <select id="findAllUser" resultType="user">
        select * from user
    </select>
</mapper>

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