2. 技术
    3. maven构建SSM工程

    maven构建SSM工程

    技术2026-01-13  10

    1. 需求

    构建SSM框架，查询数据库中用户的信息，在页面进行展示。
    # 2. 创建数据库 # 1.创建数据库 DROP DATABASE IF EXISTS `ssm_test`; CREATE DATABASE IF NOT EXISTS `ssm_test` CHARACTER SET 'utf8' COLLATE 'utf8_general_ci'; # 2.切换数据库 USE `ssm_test`; # 3.创建用户表 DROP TABLE IF EXISTS `user`; CREATE TABLE IF NOT EXISTS `user`( `pk_id` INT AUTO_INCREMENT COMMENT '用户编号', `username` VARCHAR(20) COMMENT '用户账号', `password` VARCHAR(20) COMMENT '用户密码', CONSTRAINT `pk_user` PRIMARY KEY(`pk_id`) ); # 4.添加数据 INSERT INTO `user` VALUES(NULL, '张三丰', '123'),(NULL, '郭靖', '456'),(NULL, '张无忌', '445'),(NULL, '杨过', '658');

    3. 创建maven工程

    3.1 创建一个maven工程

    3.2 填写模块信息

    3.3 确定maven信息

    3.4 填写工程信息

    3.5 目录结构

    4. 依赖的传递问题

    4.1 传递依赖

    首先我们在pom.xml文件中引入spring-webmvc的依赖 我们发现它还偷偷的帮我们引入了其他的jar包 传递依赖       我们的项目依赖spring-webmvc.jar，而spring-webmvc.jar会依赖spring-beans.jar等等，所以spring-beans.jar这些jar包也出现在了我们的maven工程中，这种现象我们称为依赖传递。

    4.2 解决依赖冲突

    第一声明优先原则：先声明的依赖优先进入项目路径近者优先原则：直接依赖优先进入项目直接排除法：使用<exclusion>标签排除依赖（推荐使用）

    5. pom.xml

    <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <!--我的工程信息--> <groupId>zw.ssm</groupId> <artifactId>ssm_01</artifactId> <version>1.0-SNAPSHOT</version> <packaging>war</packaging> <!-- 统一管理jar包版本 --> <properties> <spring.version>5.0.2.RELEASE</spring.version> <slf4j.version>1.6.6</slf4j.version> <log4j.version>1.2.12</log4j.version> <shiro.version>1.2.3</shiro.version> <mysql.version>5.1.6</mysql.version> <mybatis.version>3.4.5</mybatis.version> <spring.security.version>5.0.1.RELEASE</spring.security.version> </properties> <!-- 锁定jar包版本 --> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>${mybatis.version}</version> </dependency> </dependencies> </dependencyManagement> <!-- 项目依赖jar包 --> <dependencies> <!-- spring --> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.6.8</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-orm</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <scope>test</scope> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>${mysql.version}</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.0</version> <scope>provided</scope> </dependency> <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!-- log start --> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>${log4j.version}</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>${slf4j.version}</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>${slf4j.version}</version> </dependency> <!-- log end --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>${mybatis.version}</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.0</version> </dependency> <dependency> <groupId>c3p0</groupId> <artifactId>c3p0</artifactId> <version>0.9.1.2</version> <type>jar</type> <scope>compile</scope> </dependency> <dependency> <groupId>com.github.pagehelper</groupId> <artifactId>pagehelper</artifactId> <version>5.1.2</version> </dependency> <dependency> <groupId>org.springframework.security</groupId> <artifactId>spring-security-web</artifactId> <version>${spring.security.version}</version> </dependency> <dependency> <groupId>org.springframework.security</groupId> <artifactId>spring-security-config</artifactId> <version>${spring.security.version}</version> </dependency> <dependency> <groupId>org.springframework.security</groupId> <artifactId>spring-security-core</artifactId> <version>${spring.security.version}</version> </dependency> <dependency> <groupId>org.springframework.security</groupId> <artifactId>spring-security-taglibs</artifactId> <version>${spring.security.version}</version> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.0.9</version> </dependency> </dependencies> <!-- 添加tomcat7插件 --> <build> <plugins> <plugin> <groupId>org.apache.tomcat.maven</groupId> <artifactId>tomcat7-maven-plugin</artifactId> <version>2.2</version> </plugin> </plugins> </build> </project>

    6. 开发持久层

    6.1 applicationContext-dao.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" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> <!--配置数据源--> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver"/> <property name="url" value="jdbc:mysql://127.0.0.1:3306/ssm_test"/> <property name="username" value="root"/> <property name="password" value="root"/> </bean> <!--配置SqlSession对象的工厂--> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <!--别名包扫描--> <property name="typeAliasesPackage" value="zw.ssm.domain"/> </bean> <!--mapper接口包扫描--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="zw.ssm.mapper"/> </bean> </beans>

    6.2 用户实体类

    package zw.ssm.domain; import java.io.Serializable; /** * @ClassName User * @Description 用户实体类 * @Author 周威 * @Date 2020-06-14 - 19:19 */ public class User implements Serializable { //成员属性 private Integer pk_id; private String username; private String password; //Getter和Setter方法 public Integer getPk_id() { return pk_id; } public void setPk_id(Integer pk_id) { this.pk_id = pk_id; } 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; } //toString @Override public String toString() { return "User{" + "pk_id=" + pk_id + ", username='" + username + '\'' + ", password='" + password + '\'' + '}'; } }

    6.3 用户持久层接口

    package zw.ssm.mapper; import org.apache.ibatis.annotations.Select; import org.springframework.stereotype.Repository; import zw.ssm.domain.User; import java.util.List; /** * @Description 用户持久层接口 * @Author 周威 * @Date 2020-06-14 - 19:25 */ @Repository public interface UserMapper { /** * @Description 查询用户信息，查询所有用户 * @return 用户列表 */ @Select("select * from `user`") List<User> listUserAll(); }

    6.4 用户持久层测试类

    package zw.ssm.mapper; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; import zw.ssm.domain.User; import java.util.List; /** * @ClassName UserMapperTest * @Description 用户持久层测试类 * @Author 周威 * @Date 2020-06-14 - 19:42 */ @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations={"classpath:spring/applicationContext*.xml"}) public class UserMapperTest { @Autowired private UserMapper userMapper; @Test public void listUserAllTest() { List<User> users = userMapper.listUserAll(); for (User user : users) { System.out.println("user = " + user); } } }

    7. 开发业务层

    7.1 applicationContext-service.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: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"> <!--配置事务管理器--> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"/> </bean> <!--配置事务的通知--> <tx:advice id="advice"> <tx:attributes> <tx:method name="insert*" propagation="REQUIRED"/> <tx:method name="delete*" propagation="REQUIRED"/> <tx:method name="update*" propagation="REQUIRED"/> <tx:method name="find*" propagation="SUPPORTS" read-only="true"/> <tx:method name="list*" propagation="SUPPORTS" read-only="true"/> </tx:attributes> </tx:advice> <!--配置切面--> <aop:config> <aop:pointcut id="pointcut" expression="execution(* zw.ssm.service.impl.*.*(..))"/> <aop:advisor advice-ref="advice" pointcut-ref="pointcut"/> </aop:config> <!--业务层组件扫描--> <context:component-scan base-package="zw.ssm.service"/> </beans>

    7.2 用户业务层接口

    package zw.ssm.service; import zw.ssm.domain.User; import java.util.List; /** * @Description 用户业务层接口 * @Author 周威 * @Date 2020-06-14 - 20:06 */ public interface UserService { /** * @Description 获取用户信息业务，获取所有用户 * @return 用户列表 */ List<User> listUserAll(); }

    7.3 用户业务层实现类

    package zw.ssm.service.impl; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import zw.ssm.domain.User; import zw.ssm.mapper.UserMapper; import zw.ssm.service.UserService; import java.util.List; /** * @ClassName UserServiceImpl * @Description 用户业务层实现类 * @Author 周威 * @Date 2020-06-14 - 20:09 */ @Service public class UserServiceImpl implements UserService { @Autowired private UserMapper userMapper; public List<User> listUserAll() { List<User> users = userMapper.listUserAll(); return users; } }

    7.4 用户业务层测试类

    package zw.ssm.service; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; import zw.ssm.domain.User; import java.util.List; /** * @ClassName UserServiceTest * @Description 用户业务层测试类 * @Author 周威 * @Date 2020-06-14 - 20:11 */ @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations={"classpath:spring/applicationContext*.xml"}) public class UserServiceTest { @Autowired private UserService userService; @Test public void listUserAllTest() { List<User> users = userService.listUserAll(); for (User user : users) { System.out.println("user = " + user); } } }

    8. 开发表现层

    8.1 web.xml

    <!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 xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0"> <!--POST编码过滤器--> <filter> <filter-name>encoding</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>encoding</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!--配置Spring核心监听器--> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!--配置SpringIOC容器文件--> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring/applicationContext-*.xml</param-value> </context-param> <!--配置SpringMVC前端控制器--> <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:spring/springMVC.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>

    8.2 springMVC.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: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"> <!--表现层组件扫描--> <context:component-scan base-package="zw.ssm.controller"/> <!--处理器映射器+处理器适配器--> <mvc:annotation-driven/> <!--视图解析器--> <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!--配置逻辑视图名前缀--> <property name="prefix" value="/WEB-INF/page/"/> <!--配置逻辑视图名后缀--> <property name="suffix" value=".jsp"/> </bean> <!--释放静态资源--> <mvc:default-servlet-handler/> </beans>

    8.3 userMain.jsp

    <%-- @Description 用户展现页面 @Author 周威 @Date 2020-06-14 - 20:46 --%> <%@ page language="java" contentType="text/html;charset=utf-8" %> <%--引入JSTL--%> <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> <%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%> <html> <head> <title>展示用户</title> <meta http-equiv="Content-Type" content="text/html;charset=utf-8"/> <meta name="author" content="周威"/> <style> table{width:500px;margin: 100px auto;} tr:nth-child(even){background: #eeb0b0;} tr:nth-child(odd){background: #a9d6ff;} td{text-align:center;} </style> </head> <body> <table border="1" cellspacing="0"> <tr> <th>pk_id</th> <th>username</th> <th>password</th> </tr> <c:forEach var="user" items="${requestScope.users}"> <tr> <td>${user.pk_id}</td> <td>${user.username}</td> <td>${user.password}</td> </tr> </c:forEach> </table> </body> </html>

    8.4 用户表现层控制器

    package zw.ssm.controller; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import zw.ssm.domain.User; import zw.ssm.service.UserService; import java.util.List; /** * @ClassName UserController * @Description 用户表现层控制器 * @Author 周威 * @Date 2020-06-14 - 20:41 */ @Controller public class UserController { @Autowired private UserService userService; @RequestMapping("/list") public String requestListUserAll(Model model) { List<User> users = userService.listUserAll(); model.addAttribute("users", users); return "userMain"; } }

    8.5 工程目录

    9. 运行调试

    运行maven的Tomcat7插件 在控制台找到访问路径 在浏览器中输入url地址 http://localhost:8080/ssm_01/list运行页面
    Processed: 0.021, SQL: 10