Spring+SpingMVC+Mybatis 多模块项目搭建

谁借莪１个温暖的怀抱￠ 2024-04-17 16:58 55阅读 0赞

## *项目模块创建*部分 ##

## 1、项目模块 ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70][]

图1 项目模块

### **(1)**ssm-demo:为项目名称 ，是一个maven项目（模块），ssm-demo-common、ssm-demo-dao、ssm-demo-servier是一个子maven模块，而lssm-demot-web是一个maven web模块。 ###

注：common模块：放置工具类、静态变量等。

dao模块：sql映射文件、mapper接口。

service模块：service接口和实现类，处理器类（controller）。

web模块：放置spring-context.xml、springMVC.xml、web.xml等文件和html/jsp页面。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 1][]

### (2)模块的创建过程  ###

**1）首先，创建项目,  file->new-project...->maven**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 2][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 3][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 4][]

** 2）在项目中创建maven模块,例如创建ssm-demo-dao**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 5][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 6][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 7][]

剩下的ssm-demo-service、ssm-demo-commom的创建同上。

** 3)  在项目中创建ssm-demo-service模块创建也类似，只需在下图中选中webapp,其他步骤相同**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 8][]

到这里项目各模块创建完毕，接下来进行框架配置。

## **框架配置部分** ##

配置文件在web模块的如下位置

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 9][]

## 2、spring-context.xml 核心配置文件 ##

<?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:context="http://www.springframework.org/schema/context"
           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/tx
            http://www.springframework.org/schema/tx/spring-tx.xsd">
        
        <context:property-placeholder location="classpath:jdbc.properties"/>
    
        
        <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>
    
    
        
        <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
            <property name="dataSource" ref="dataSource"/>
            <property name="mapperLocations" value="classpath*:dbmap/UserMapper.xml"/>
        </bean>
    
        
        <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
            <property name="basePackage" value="com.ssm.demo.mapper"/>
            <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        </bean>
    
    </beans>

## 3、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:context="http://www.springframework.org/schema/context"
           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/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    
        
        <context:component-scan base-package="com.ssm.demo">
        </context:component-scan>
        
        <mvc:annotation-driven/>
    
        
        
        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
            <property name="prefix" value="/views/"/>
            <property name="suffix" value=".jsp"/>
        </bean>
    
    </beans>

## 4、web.xml ##

<?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee"
             xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
             metadata-complete="true" version="3.0">
      <display-name>webapp</display-name>
    
      
      <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
      </listener>
    
      
      
      <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring/spring-context.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>classpath*:spring/*.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
        <async-supported>true</async-supported>
      </servlet>
      <servlet-mapping>
        <servlet-name>springMVC</servlet-name>
        <url-pattern>/</url-pattern>
      </servlet-mapping>
    
    </web-app>

# #

## **框架使用** ##

## 5、数据库查询功能实现（使用例子） ##

ssm-demo的pom.xml中添加依赖

<dependency>
                <groupId>org.eclipse.jetty</groupId>
                <artifactId>jetty-servlets</artifactId>
                <version>9.4.11.v20180605</version>
            </dependency>
            
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>1.0.9</version>
            </dependency>
    
            
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis-spring</artifactId>
                <version>1.2.2</version>
            </dependency>
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis</artifactId>
                <version>3.2.7</version>
            </dependency>
    
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>4.11</version>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>com.liao</groupId>
                <artifactId>ssm-demo-service</artifactId>
                <version>1.0-SNAPSHOT</version>
            </dependency>

ssm-demo-web 的pom.xml 添加依赖

<dependency>
                <groupId>org.eclipse.jetty</groupId>
                <artifactId>jetty-servlets</artifactId>
                <version>9.4.11.v20180605</version>
            </dependency>
            
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>1.0.9</version>
            </dependency>
    
            
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis-spring</artifactId>
                <version>1.2.2</version>
            </dependency>
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis</artifactId>
                <version>3.2.7</version>
            </dependency>
            
            <dependency>
                <groupId>com.liao</groupId>
                <artifactId>ssm-demo-service</artifactId>
                <version>1.0-SNAPSHOT</version>
            </dependency>

*(1)数据库配置文件和表*

jdbc.propertis（位于web模块的resource）

jdbc.driver=com.mysql.cj.jdbc.Driver
    jdbc.url=jdbc:mysql://localhost:3306/demo?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT&useSSL=false
    jdbc.username=你的用户名
    jdbc.password=你的密码

表user

![20190829231615935.png][]

*（2）dao模块代码*

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 10][]

UserEntity.java

package com.ssm.demo.entitis;
    
    public class UserEntity {
        private int id;
        private String name;
        private String city;
    
        public int getId() {
            return id;
        }
    
        public void setId(int id) {
            this.id = id;
        }
    
        public String getName() {
            return name;
        }
    
        public void setName(String name) {
            this.name = name;
        }
    
        public String getCity() {
            return city;
        }
    
        public void setCity(String city) {
            this.city = city;
        }
    
        @Override
        public String toString() {
            return "UserEntity{" +
                    "id=" + id +
                    ", name='" + name + '\'' +
                    ", city='" + city + '\'' +
                    '}';
        }
    }

UserMapper接口

package com.ssm.demo.mapper;
    
    
    import com.ssm.demo.entitis.UserEntity;
    import org.springframework.stereotype.Repository;
    
    import java.util.List;
    
    @Repository
    public interface UserMapper {
    
        List<UserEntity> getAllUser();
    
    }

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.ssm.demo.mapper.UserMapper">
        <resultMap id="BaseResultMap" type="com.ssm.demo.entitis.UserEntity">
            <id column="id" property="id" jdbcType="INTEGER"/>
            <result column="name" property="name" jdbcType="VARCHAR"/>
            <result column="city" property="city" jdbcType="VARCHAR"/>
        </resultMap>
    
        <select id="getAllUser" resultMap="BaseResultMap">
            select * from user
        </select>
    
    </mapper>

*（3）service模块代码*

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 11][]

UserService接口

package com.ssm.demo.service.ServiceInterface;
    
    
    import com.ssm.demo.entitis.UserEntity;
    
    import java.util.List;
    
    public interface UserService {
        List<UserEntity> getAll();
    
    
    }

UserServiceImpl.java

package com.ssm.demo.service;
    
    
    import com.ssm.demo.entitis.UserEntity;
    import com.ssm.demo.mapper.UserMapper;
    import com.ssm.demo.service.ServiceInterface.UserService;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    
    import java.util.List;
    
    
    @Service
    public class UserServiceImpl implements UserService {
    
        @Autowired
        private UserMapper userMapper;
    
        public List<UserEntity> getAll() {
            return userMapper.getAllUser();
    
        }
    }

TestController.java

package com.ssm.demo.controller;
    
    
    import com.ssm.demo.entitis.UserEntity;
    import com.ssm.demo.service.ServiceInterface.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;
    import java.util.Map;
    
    @Controller
    @RequestMapping("user")
    public class TestController {
        @Autowired
        private UserService userService;
    
        /*
         * 查询user表的所有信息
         *通过mode将查询结果返回，
         * index为逻辑视图名，将解析为/views/index.jsp
         * */
        @RequestMapping("all")
        public String showUser(Map mode) {
            List<UserEntity> userEntityList = userService.getAll();
            mode.put("userEntityList", userEntityList);
            return "index";
        }
    
    }

*（4）index.jsp位置*

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 12][]

index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>Title</title>
    </head>
    <body>
    <h3>${requestScope.userEntityList}</h3>
    </body>
    </html>

**在浏览器中输入：[http://localhost:8080/user/all][http_localhost_8080_user_all]      即可显示数据库返回的数据**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 13][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/43fc341b8bad46b2a6de92c021a5a8ef.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 1]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/b7ea1a68b878410188e16cde385380b0.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 2]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/46495c0832a14b64b24ba8b49cc83114.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 3]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/6096c8415b87400f8987229f37424b81.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 4]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/ef168ee0b2c84b9da686a3798b0d4e36.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 5]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/0627a1e9fba240fea3f364cd8e026b8b.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 6]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/00142be33e8240ad99565029296c9ff8.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 7]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/72d3a5878673491d831adf10b54a48d4.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 8]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/b05e090627b0454aa8939b2d2533061a.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 9]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/4f63f866ab8941b08265c965fdec3e06.png
[20190829231615935.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/e1aaa770241f410191d711ba40093291.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 10]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/d735181d70c9429090b66d3eb11f429c.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 11]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/297d3263fdfc4574ab9349863c88daa8.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 12]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/01a75c94f4104eba872c58892169acdf.png
[http_localhost_8080_user_all]: http://localhost:8080/user/all
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM1MTg0NTc2_size_16_color_FFFFFF_t_70 13]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/3a58b52437da4e5796d79b8f7c2106d2.png