SSM框架整合
SSM框架整合
- 环境： Maven3.92 、 Mysql8.0、Tomcat7.0
- 数据库
/*
Navicat Premium Data Transfer
Source Server : Graude
Source Server Type : MySQL
Source Server Version : 80035 (8.0.35)
Source Host : localhost:3306
Source Schema : ssmbuild
Target Server Type : MySQL
Target Server Version : 80035 (8.0.35)
File Encoding : 65001
Date: 01/04/2024 16:15:39
*/
SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;
-- ----------------------------
-- Table structure for books
-- ----------------------------
DROP TABLE IF EXISTS `books`;
CREATE TABLE `books` (
`bookID` int NOT NULL AUTO_INCREMENT,
`bookName` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL,
`bookCounts` int NULL DEFAULT NULL,
`detail` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL,
PRIMARY KEY (`bookID`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 3 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Records of books
-- ----------------------------
INSERT INTO `books` VALUES (1, 'Java', 1, '从入门到入土');
INSERT INTO `books` VALUES (2, 'MySQL', 2, '从删库到跑路');
SET FOREIGN_KEY_CHECKS = 1;
- 导入环境依赖
<!--导入依赖：mysql,junit,连接池,servlet,jsp,spring,mybatis,mybatis-spring-->
<dependencies>
<!--mysql-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.33</version>
</dependency>
<!--junit-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13.1</version>
<scope>test</scope>
</dependency>
<!--数据库连接池-->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<!--servlet-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<!--jsp-->
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!--mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.9</version>
</dependency>
<!--mybatis-spring-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.5</version>
</dependency>
<!--spring-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.3.27</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.3.8</version>
</dependency>
</dependencies>
- 静态资源导出问题
<!--静态资源导出问题-->
<build>
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
</resources>
</build>
一、配置Mybatis
- 配置mybatis-config映射文件
<?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>
<!--配置数据源，现在交给Spring做-->
<!--配置别名-->
<typeAliases>
<package name="com.wfy.pojo"/>
</typeAliases>
<mappers>
<mapper class="com.wfy.dao.BookMapper"/>
</mappers>
</configuration>
- properties文件
使用的是mysql8.0以上的版本，url要配置时区
配置完成后，测试数据库连接
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf8&serverTimezone=Asia/Shanghai
jdbc.username=root
jdbc.password=root
- 配置实体类(pojo)
package com.wfy.pojo;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data //使用该注解需要导入lombok依赖，偷懒用的
@AllArgsConstructor//有参构造
@NoArgsConstructor//无参构造
public class Books {
private int bookID;
private String bookName;
private int bookCounts;
private String detail;
}
- dao层（数据访问层）
- BookMapper
package com.wfy.dao;
import com.wfy.pojo.Books;
import org.apache.ibatis.annotations.Param;
import java.util.List;
public interface BookMapper {
//增
int addBook(Books books);
//删
int deleteBook(@Param("bookID") int bookID);
//改
int updateBook(Books books);
//查(一本)
Books queryBookById(@Param("bookID")int bookID);
//查（全部）
List<Books> queryAllBook();
}
- BookMapper.xml映射文件
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.wfy.dao.BookMapper">
<!--增-->
<insert id="addBook" parameterType="Books">
insert into ssmbuild.books( bookName, bookCounts, detail)
values(#{bookName},#{bookCounts},#{detail})
</insert>
<!--删-->
<delete id="deleteBook" parameterType="int" >
delete from ssmbuild.books where bookID=#{bookID}
</delete>
<!--改-->
<update id="updateBook" parameterType="Books">
update ssmbuild.books
set bookName=#{bookName},bookCounts=#{bookCounts},detail=#{detail}
where bookID=#{bookID}
</update>
<!--查-->
<select id="queryBookById" resultType="Books">
select * from ssmbuild.books
where bookID=#{bookID}
</select>
<!--查所有-->
<select id="queryAllBook" resultType="Books">
select * from ssmbuild.books
</select>
</mapper>
- service层（业务层）
利用service层去调用dao层，最大的作用就是解耦
即一个service层可以调用多个dao层
- 接口Bookservice
package com.wfy.service;
import com.wfy.pojo.Books;
import java.util.List;
public interface BookService {
//增
int addBook(Books books);
//删
int deleteBook( int bookID);
//改
int updateBook(Books books);
//查(一本)
Books queryBookById(int bookID);
//查（全部）
List<Books> queryAllBook();
}
- BookseviceImpl
package com.wfy.service;
import com.wfy.dao.BookMapper;
import com.wfy.pojo.Books;
import java.util.List;
public class BookServiceImpl implements BookService{
//service层调用dao层：组合dao层
private BookMapper bookMapper;
public void setBookMapper(BookMapper bookMapper) {
this.bookMapper = bookMapper;
}
@Override
public int addBook(Books books) {
return bookMapper.addBook(books);
}
@Override
public int deleteBook(int bookID) {
return bookMapper.deleteBook(bookID);
}
@Override
public int updateBook(Books books) {
return bookMapper.updateBook(books);
}
@Override
public Books queryBookById(int bookID) {
return queryBookById(bookID);
}
@Override
public List<Books> queryAllBook() {
return bookMapper.queryAllBook();
}
}
二、配置Spring
2.1、spring-dao层配置
<?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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<!--1.关联数据库配置文件-->
<context:property-placeholder location="classpath:db.properties"/>
<!--2.连接池-->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driver}"/>
<property name="jdbcUrl" value="${jdbc.url}"/>
<property name="user" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<!-- c3p0连接池的私有属性 -->
<property name="maxPoolSize" value="30"/>
<property name="minPoolSize" value="10"/>
<!-- 关闭连接后不自动commit -->
<property name="autoCommitOnClose" value="false"/>
<!-- 获取连接超时时间 -->
<property name="checkoutTimeout" value="10000"/>
<!-- 当获取连接失败重试次数 -->
<property name="acquireRetryAttempts" value="2"/>
</bean>
<!--3.sqlSessionFactory-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<!--绑定mybatis配置文件-->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
</bean>
<!--4.配置dao接口扫描包，动态的实现了Dao接口可以注入到Spring容器中-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--注入sqlSessionFactory-->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!--要扫描的dao包-->
<property name="basePackage" value="com.wfy.dao"/>
</bean>
</beans>
2.2、spring-service层配置
<?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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<import resource="classpath:spring-dao.xml"/>
<!--1.扫描service下的包-->
<context:component-scan base-package="com.wfy.service"/>
<!--2.将所有的业务类，注入到Spring，可以通过配置，或者注解实现-->
<!--通过配置实现-->
<bean id="BookServiceImpl" class="com.wfy.service.BookServiceImpl">
<property name="bookMapper" ref="bookMapper"/>
</bean>
<!--3.声明式事务配置-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!--注入数据源-->
<property name="dataSource" ref="dataSource"/>
</bean>
<!--4.aop事务支持-->
</beans>
三、配置SpringMVC
<?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:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<!--1.注解驱动-->
<mvc:annotation-driven/>
<!--2.静态资源过滤-->
<mvc:default-servlet-handler/>
<!--3.扫描包：controller-->
<context:component-scan base-package="com.wfy.controller"/>
<!--4.视图解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>
三层整合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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<import resource="classpath:spring-dao.xml"/>
<import resource="classpath:spring-service.xml"/>
<import resource="classpath:spring-mvc.xml"/>
</beans>
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