2023-02-10

一、配置SSM环境

1、添加日志文件

在“shf-parent/web-admin/src/main/resources”下创建“logback.xml”

<?xml version="1.0" encoding="UTF-8"?>
<configuration debug="false">

    <!--定义日志文件的存储地址 logs为当前项目的logs目录 还可以设置为../logs -->
    <property name="LOG_HOME" value="logs" />

    <!--控制台日志， 控制台输出 -->
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <!--格式化输出：%d表示日期，%thread表示线程名，%-5level：级别从左显示5个字符宽度,%msg：日志消息，%n是换行符-->
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
        </encoder>
    </appender>

    <!-- 日志输出级别 -->
    <root level="DEBUG">
        <appender-ref ref="STDOUT" />
    </root>
</configuration>

2、在“shf-parent/web-admin/src/main/resources”下创建“mybatis-config.xml”

<?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>
     <!--开启驼峰命名自动映射-->
    <settings>
        <setting name="mapUnderscoreToCamelCase" value="true"/>
    </settings>
</configuration>

3、在“shf-parent/web-admin/src/main/resources”下创建spring文件夹，创建“db.properties”

（1）db.properties

jdbc.username=数据库用户名
jdbc.password=数据库密码
jdbc.url=jdbc:mysql://localhost:3306/数据库名称?serverTimezone=Asia/Shanghai
jdbc.driverClassName=com.mysql.cj.jdbc.Driver

（2）在spring文件夹下

①创建“spring-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"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mybatis-spring="http://mybatis.org/schema/mybatis-spring"
       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 http://mybatis.org/schema/mybatis-spring http://mybatis.org/schema/mybatis-spring.xsd">

<!--    引入外部文件-->
    <context:property-placeholder location="classpath:db.properties"></context:property-placeholder>

    <!--    配置数据源-->
    <bean class="com.alibaba.druid.pool.DruidDataSource" id="dataSource" destroy-method="close">
        <!--        配置连接数据库的相关属性-->
        <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.driverClassName}"></property>
    </bean>

<!--    整合mybatis-->
<!--    1、配置sqlsessionFactoryBean-->
    <bean class="org.mybatis.spring.SqlSessionFactoryBean" id="sqlSessionFactoryBean">
<!--        配置数据源属性-->
        <property name="dataSource" ref="dataSource"></property>
<!--        配置mybatis的全局配置文件的路径-->
        <property name="configLocation" value="classpath:mybatis-config.xml"></property>
<!--        配置给实体类包下所有的类起别名-->
        <property name="typeAliasesPackage" value="com.hh.entity"></property>
<!--        配置mapper映射文件的路径-->
        <property name="mapperLocations" value="classpath:mapper/*.xml"></property>
    </bean>

<!--    2、扫描mapper工具-->
    <mybatis-spring:scan base-package="com.hh.dao"></mybatis-spring:scan>
</beans>

②创建“spring-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: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 https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">

<!--    配置扫描的包-->
    <context:component-scan base-package="com.hh.service"></context:component-scan>
    
<!--    配置事务管理器-->
    <bean class="org.springframework.jdbc.datasource.DataSourceTransactionManager" id="transactionManager">
<!--        配置数据源属性-->
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    
<!--    开启事务注解支持-->
    <tx:annotation-driven></tx:annotation-driven>
</beans>

③创建“spring-mvc.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: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/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    <!--包扫描-->
    <context:component-scan base-package="com.hh.controller" />

    <!-- 没有匹配上的url全部按默认方式（就是直接访问）访问，避免拦截静态资源 -->
    <mvc:default-servlet-handler/>
    <!-- 开启mvc注解-->
    <mvc:annotation-driven>
        <mvc:message-converters register-defaults="true">
            <!-- 配置Fastjson支持 -->
            <bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
                <property name="supportedMediaTypes">
                    <list>
                        <value>text/html;charset=UTF-8</value>
                        <value>application/json</value>
                    </list>
                </property>
            </bean>
        </mvc:message-converters>
    </mvc:annotation-driven>

    <!--视图解析器-->
    <bean id="templateResolver" class="org.thymeleaf.spring5.templateresolver.SpringResourceTemplateResolver">
        <!--配置前缀-->
        <property name="prefix" value="/WEB-INF/templates/"></property>
        <!--配置后缀-->
        <property name="suffix" value=".html"></property>
        <!--配置编码格式-->
        <property name="characterEncoding" value="UTF-8"></property>
        <!--设置缓存为null-->
        <property name="cacheable" value="false"></property>
        <!--配置模板模式,
        HTML5:表示严格模式
        LEGACYHTML5：表示宽松模式-->
        <property name="templateMode" value="LEGACYHTML5"></property>
    </bean>
    <!--配置spring的视图解析器-->
    <bean id="viewResolver" class="org.thymeleaf.spring5.view.ThymeleafViewResolver">
        <!--设置编码格式-->
        <property name="characterEncoding" value="UTF-8"></property>
        <!--设置模板引擎-->
        <property name="templateEngine" ref="templateEngine"/>
    </bean>
    <!--配置模板引擎-->
    <bean id="templateEngine" class="org.thymeleaf.spring5.SpringTemplateEngine">
        <!--引用视图解析器-->
        <property name="templateResolver" ref="templateResolver"></property>
    </bean>
</beans>

（3）在“shf-parent/web-admin/src/main/resources”下创建mapper文件夹

（4）在“shf-parent/web-admin/src/main/java”下创建包“com.hh.controller”、“com.hh.dao”、“com.hh.service”

4、配置“shf-parent/web-admin/src/main/webapp/WEB-INF/web.xml”文件

<?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">
    <display-name>web</display-name>

<!--    配置POST请求请求乱码问题的过滤器-->
    <filter>
        <filter-name>CharacterEncodingFilter</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>forceRequestEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
        <init-param>
            <param-name>forceResponseEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>CharacterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

<!--    配置前端控制器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:spring/spring-mvc.xml</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    
<!--    配置当前WEB应用的初始化参数-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:/spring/spring-*.xml</param-value>
    </context-param>
    
<!--    配置监听器-->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
</web-app>

二、测试SSM环境

1、添加表

2、添加实体

3、添加RoleDao

在“shf-parent/web-admin/src/main/java/com.hh.dao”下创建RoleDao接口

public interface RoleDao {
    List<Role> findAll();
}

4、添加RoleDao.xml映射文件

<?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.hh.dao.RoleDao">

    <!-- 用于select查询公用抽取的列 -->
    <sql id="columns">
        select id,role_name,role_code,description,create_time,update_time,is_deleted
    </sql>

<!--   查询所有-->
    <select id="findAll" resultType="role">
        <include refid="columns"></include>
        from acl_role
        where is_deleted = 0
    </select>
    
</mapper>

5、添加service

①在“shf-parent/web-admin/src/main/java/com.hh.service”中创建“RoleService"

public interface RoleService {
    List<Role> findAll();
}

②在“shf-parent/web-admin/src/main/java/com.hh.service”中创建“impl.RoleServiceImpl"

@Service
public class RoleServiceImpl implements RoleService {

    @Autowired
    private RoleDao roleDao;
    @Override
    public List<Role> findAll() {
        return roleDao.findAll();
    }
}

6、添加controller

在“shf-parent/web-admin/src/main/java/com.hh.controller”中创建“RoleController"

@Controller
@RequestMapping("/role")
public class RoleController {
    @Autowired
    private RoleService roleService;

    @RequestMapping
    public String index(Map map){
        //调用RoleService中获取所有的角色的方法
        List<Role> roleList = roleService.findAll();
        //将所有的角色放到request域中
        map.put("list",roleList);
        //渲染数据的页面
        return "role/index";
    }
}

7、添加页面

在“shf-parent/web-admin/src/main/webapp/WEN-INF”下创建“templates/role/index.html"

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<table>
    <tr th:each="item,it : ${list}">
        <td class="text-center" th:text="${it.count}">11</td>
        <td th:text="${item.roleName}">22</td>
        <td th:text="${item.roleCode}">33</td>
        <td th:text="${item.description}">33</td>
        <td th:text="${#dates.format(item.createTime,'yyyy-MM-dd HH:mm:ss')}" >33</td>
    </tr>
</table>
</body>
</html>