SSM入门
pom.xml
<!--依赖 :junit , 数据库驱动, 连接池, servlet, jsp, mybatis, mybatis-spring, spring, 日志管理-->
<dependencies>
<!--日志管理-->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<!--数据库驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
<!--数据库连接池-->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.5</version>
</dependency>
<!--测试驱动-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<!--mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.5</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>5.2.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.2.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.4</version>
</dependency>
<!--servlet jsp-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<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>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.12</version>
</dependency>
</dependencies>
<!--静态资源导出问题-->
<build>
<resources>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
</resources>
</build>
spring:
applicationContex.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">
</beans>
mybatis.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>
<!--配置数据资源交给spring做-->
<settings>
<!--设置日志工厂-->
<!--<setting name="logImpl" value="LOG4J"/>-->
<!--关闭日志工厂-->
<setting name="logImpl" value="NO_LOGGING"/>
<!--显示开启全局缓存-->
<setting name="cacheEnabled" value="true"/>
</settings>
<!--别名优化-->
<typeAliases>
<package name="com.mrh.pojo"/>
</typeAliases>
</configuration>
db.properties
jdbc.driver=com.mysql.jdbc.Driver
#mysql8.0以上版本需要增加一个时区设置 &serverTimezone=Asia/Shanghai
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf8
jdbc.usernamr=root
jdbc.password=991024
编写实体类
package com.mrh.pojo;
/**
* @ClassName Books
* @Description TODO
* @Author m
* @Version 1.0
*/
public class Books {
private int bookID;
private String bookName;
private int bookCount;
private String detail;
@Override
public String toString() {
return "Books{" +
"bookID=" + bookID +
", bookName='" + bookName + '\'' +
", bookCount=" + bookCount +
", detail='" + detail + '\'' +
'}';
}
public int getBookID() {
return bookID;
}
public void setBookID(int bookID) {
this.bookID = bookID;
}
public String getBookName() {
return bookName;
}
public void setBookName(String bookName) {
this.bookName = bookName;
}
public int getBookCount() {
return bookCount;
}
public void setBookCount(int bookCount) {
this.bookCount = bookCount;
}
public String getDetail() {
return detail;
}
public void setDetail(String detail) {
this.detail = detail;
}
public Books() {
}
public Books(int bookID, String bookName, int bookCount, String detail) {
this.bookID = bookID;
this.bookName = bookName;
this.bookCount = bookCount;
this.detail = detail;
}
}
dao接口
package com.mrh.dao;
import com.mrh.pojo.Books;
import org.apache.ibatis.annotations.Param;
import java.util.List;
public interface BookMapper {
//增加一本书
int addBook(Books books);
//删除一本书
int deleteBookById(@Param("bookID") int id);
//更新一本书
int updateBook(Books books);
//查询一本书
Books selectBookById(int id);
//查询全部书
List<Books> selectAllBook();
}
Mybatis映射
<?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.mrh.dao.BookMapper">
<insert id="addBook" parameterType="Books">
insert into ssmbuild.books(bookName, bookCount, detail)
value (#{bookName}, #{bookCount}, #{detail});
</insert>
<delete id="delectBookById" >
delete from ssmbuild.books where bookID = #{bookID};
</delete>
<update id="updateBook" parameterType="Books">
update ssmbuild.books
set bookName = #{bookName}, bookCount = #{bookCount}, detail = #{detail}
where bookID= #{bookID};
</update>
<select id="selectBookById" resultType="Books">
select * from ssmbuild.books where bookID = #{bookID};
</select>
<select id="selectAllBook" resultType="Books">
select * from ssmbuild.books;
</select>
</mapper>
编写服务层
package com.mrh.service;
import com.mrh.dao.BookMapper;
import com.mrh.pojo.Books;
import java.util.List;
/**
* @ClassName BookServiceImpl
* @Description TODO
* @Author m
* @Version 1.0
*/
public class BookServiceImpl implements BookService{
//service层调dao层应用组合方式
private BookMapper mapper;
//通过set方式注入
public void setMapper(BookMapper mapper) {
this.mapper = mapper;
}
public int addBook(Books books) {
return mapper.addBook(books);
}
public int deleteBookById(int id) {
return mapper.deleteBookById(id);
}
public int updateBook(Books books) {
return mapper.updateBook(books);
}
public Books selectBookById(int id) {
return mapper.selectBookById(id);
}
public List<Books> selectAllBook() {
return mapper.selectAllBook();
}
}
spring整合dao层
<?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">
<!--关联数据库配置文件-->
<context:property-placeholder location="classpath:db.properties"/>
<!--建立连接池-->
<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私有属性-->
<property name="maxPoolSize" value="30"/>
<property name="minPoolSize" value="10"/>
<!--是否自动提交-->
<property name="autoCommitOnClose" value="false"/>
<!--连接超时时间-->
<property name="checkoutTimeout" value="10000"/>
<!--连接失败,重试次数-->
<property name="acquireRetryAttempts" value="2"/>
</bean>
<!--SqlSessionFactory-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!--注入数据源-->
<property name="dataSource" ref="dataSource"/>
<!--绑定配置文件-->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
</bean>
<!--配置dao接口扫描包,动态的实现Dao接口注入到spring容器中-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--注入SqlSessionFactory-->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!--要扫描的包-->
<property name="basePackage" value="com.mrh.dao"/>
</bean>
</beans>
spring整合service层
<?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">
<!--扫描service下的包-->
<context:component-scan base-package="com.mrh.service"/>
<!--将所有业务注入到spring中,也可以通过注解实现-->
<bean id="bookServiceImpl" class="com.mrh.service.BookServiceImpl">
<property name="mapper" ref="bookMapper"/>
</bean>
<!--声明式事务-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>
spring整合mvc层
<?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">
<!--注解驱动-->
<mvc:annotation-driven/>
<!--静态资源过滤-->
<mvc:default-servlet-handler/>
<!--扫描包-->
<context:component-scan base-package="com.mrh.controller"/>
<!--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>
web.xml配置
<?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">
<!--DispatchServlet-->
<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-mvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup> <!--和tomcat一起启动-->
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--乱码过滤器-->
<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>/*</url-pattern>
</filter-mapping>
<!--session有效时间(分钟)-->
<session-config>
<session-timeout>15</session-timeout>
</session-config>
</web-app>
Controller层
package com.mrh.controller;
import com.mrh.dao.BookMapper;
import com.mrh.pojo.Books;
import com.mrh.service.BookService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import java.awt.print.Book;
import java.util.List;
/**
* @ClassName BookController
* @Description TODO
* @Author m
* @Version 1.0
*/
@Controller
@RequestMapping("/book")
public class BookController {
//controller层调service层
@Autowired
@Qualifier("BookServiceImpl")
private BookService bookService;
//查询全部书籍并返回
@RequestMapping("/allBooks")
public String list(Model model){
List<Books> list = bookService.selectAllBook();
model.addAttribute("list",list);
return "allBooks";
}
}