最近有個師弟在問我關於SSM整合的問題,我也閒來無事搞了一個基礎架構起來,給他們做模板使用。
所需的框架:
開發的平台:IDEA 2018.3.2、tomcat9
開始構建項目:
1.第一步:
使用模板構建Maven項目,選擇org.apache.maven開頭的。
編寫GroupId與ArtifactId
選擇Maven版本
然後繼續點擊Next,再點擊Finish即可;
進來項目以後,點擊Enable Auto-Import,稍等一會兒。項目文件就會加載完成。
生成後點擊右上角的文件項目文件管理器,手動創建文件。
之後在pom.xml文件裡開始添加框架
PS:搜索框架用的Maven存儲庫。https://mvnrepository.com/
<?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>
<groupId>com.moonlit</groupId>
<artifactId>TestSSM</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>TestSSM Maven Webapp</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
</properties>
<dependencies>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>5.1.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>5.1.6.RELEASE</version>
</dependency>
<!-- spring-test -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.1.6.RELEASE</version>
<scope>test</scope>
</dependency>
<!-- Spring-mvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.1.6.RELEASE</version>
</dependency>
<!-- mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.1</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.1</version>
</dependency>
<!-- mysql -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.16</version>
</dependency>
<!-- Druid -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.16</version>
</dependency>
<!-- Json -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.58</version>
</dependency>
<!-- lombok -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.6</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok-maven</artifactId>
<version>1.18.6.0</version>
<type>pom</type>
</dependency>
<!-- 日志 -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.21</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.21</version>
</dependency>
<!-- Junit4 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.1.6.RELEASE</version>
<scope>compile</scope>
</dependency>
<build>
<finalName>TestSSM</finalName>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
<plugins>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.1.0</version>
</plugin>
<!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.1</version>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>3.2.2</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
<?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">
<!-- 包掃描 -->
<context:component-scan base-package="com.moonlit.demo"/>
<!-- 加載數據庫配置文件 -->
<context:property-placeholder location="classpath:/db.properties"/>
<!-- 創建連接池 -->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close">
<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>
<!-- 配置SessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<!-- 读取MyBatis总配置文件 -->
<property name="configLocation" value="classpath:/mybatis.xml"/>
<!-- 配置别名扫描 -->
<property name="typeAliasesPackage" value="com.moonlit.demo.entity"/>
<!-- 自动扫描mapper.xml文件 -->
<property name="mapperLocations" value="classpath:/mapper/*Mapper.xml"/>
</bean>
<!-- 配置事务 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<tx:annotation-driven/>
<!--Mapper接口代理扫描器-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<property name="basePackage" value="com.moonlit.demo.dao"/>
</bean>
</beans>
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc"
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
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!-- 包含Spring的核心配置 -->
<import resource="classpath:spring/applicationContext.xml"/>
<!--MVC的注解解析器 -->
<mvc:annotation-driven/>
<!-- 静态资源处理器 -->
<mvc:default-servlet-handler/>
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/user/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>
當配置完上面這兩個文件之後
完成後,上面的提示就會消失
3. 配置mybatis.xml文件 (不需要可以不配置)
<?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>
<!-- 可以不配置 -->
<settings>
<!-- 配置允許懶加載 -->
<setting name="lazyLoadingEnabled" value="true"/>
<!-- 取消關聯查詢 -->
<setting name="aggressiveLazyLoading" value="false"/>
<!-- 哪些方法會觸發關係查詢 -->
<setting name="lazyLoadTriggerMethods" value="clone"/>
</settings>
<!-- 配置别名 -->
<typeAliases>
<typeAlias type="com.moonlit.demo.entity.User" alias="User"></typeAlias>
</typeAliases>
</configuration>
jdbc.driver = com.mysql.cj.jdbc.Driver
#testssm是數據庫名,後面的那一段是字符編碼跟時區
jdbc.url = jdbc:mysql://localhost:3306/testssm?useUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=GMT%2B8
jdbc.username = root
jdbc.password = qwe123
# Global logging configuration
log4j.rootLogger=ERROR, stdout
# MyBatis logging configuration...
log4j.logger.cn.wolfcode.ssm.mapper=TRACE
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n
package com.moonlit.demo.entity;
import lombok.Data;
import org.springframework.stereotype.Repository;
/**
1. @Author: Joshua_Zheng
2. @Date: 2019/5/7 17:37
3. @Email: [email protected]
4. @Version 1.0
*/
@Data
@Repository
public class User {
private Integer id;
private String name;
}
package com.moonlit.demo.service;
import com.moonlit.demo.entity.User;
import java.util.List;
/**
* @Author: Joshua_Zheng
* @Date: 2019/5/7 17:39
* @Email: [email protected]
* @Version 1.0
*/
public interface UserService {
List<User> listUsers();
}
Ps:快速創建接口實現類
Idea會自動創建,UserServiceImpl
package com.moonlit.demo.service.impl;
import com.moonlit.demo.dao.UserDaoMapper;
import com.moonlit.demo.entity.User;
import com.moonlit.demo.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
/**
1. @Author: Joshua_Zheng
2. @Date: 2019/5/7 17:39
3. @Email: [email protected]
4. @Version 1.0
*/
@Service
public class UserServiceImpl implements UserService {
@Autowired
private UserDaoMapper mapper;
@Override
public List<User> listUsers() {
return mapper.listUsers();
}
}
package com.moonlit.demo.dao;
import com.moonlit.demo.entity.User;
import org.springframework.stereotype.Repository;
import java.util.List;
/**
1. @Author: Joshua_Zheng
2. @Date: 2019/5/7 17:40
3. @Email: [email protected]
4. @Version 1.0
*/
@Repository
public interface UserDaoMapper {
/**
* 查詢所有用戶
* @return
*/
List<User> listUsers();
}
<?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.moonlit.demo.dao.UserDaoMapper">
<!-- 结果集映射处理-->
<resultMap id="User" type="User">
<result column="id" property="id"/>
<result column="name" property="name"/>
</resultMap>
<select id="listUsers" resultMap="User">
select id,name from user;
</select>
</mapper>
import com.moonlit.demo.entity.User;
import com.moonlit.demo.service.UserService;
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 java.util.List;
/**
* @Author: Joshua_Zheng
* @Date: 2019/5/7 17:42
* @Email: [email protected]
* @Version 1.0
*/
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(value = "classpath:spring/applicationContext.xml")
public class App {
@Autowired
private UserService userService;
@Test
public void testList(){
List<User> users = userService.listUsers();
for (User user : users) {
System.out.println("user = " + user);
}
}
}
當可以看到輸出結果時就說明你的框架整合完成了,並且可以獲取數據庫中的信息。
package com.moonlit.demo.controller;
import com.alibaba.fastjson.JSON;
import com.moonlit.demo.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;
/**
1. @Author: Joshua_Zheng
2. @Date: 2019/5/7 17:44
3. @Email: [email protected]
4. @Version 1.0
*/
@Controller
public class UserController {
@Autowired
private UserService userService;
/**
* 顯示所有用戶信息
* @return
*/
@RequestMapping("/user")
@ResponseBody
public String listUsers(){
String users = JSON.toJSONString(userService.listUsers());
return users;
}
}
<?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"
id="WebApp_ID" version="3.0">
<!-- 配置Spring的核心監聽器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/applicationContext.xml</param-value>
</context-param>
<!-- 字符編碼 -->
<filter>
<filter-name>encodingFilter</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>encodingFilter</filter-name>
<url-pattern>/*
SpringMVC
org.springframework.web.servlet.DispatcherServlet
contextConfigLocation
classpath:spring/spring-mvc.xml
1
SpringMVC
/
-Dfile.encoding=UTF-8
回到Server選項菜單,開啟熱部署,然後點擊Ok
15. 啟動項目
16. 發送請求
http://localhost:8080/SSMDome/user
Ps:這裡因為沒轉碼所以輸出中文時會變成??