SSM框架整合
(数据库)
一.导入包 pom.xml里面的配置
1 <dependencies> 2 <!--Junit--> 3 <dependency> 4 <groupId>junit</groupId> 5 <artifactId>junit</artifactId> 6 <version>4.12</version> 7 </dependency> 8 <!--数据库驱动--> 9 <dependency> 10 <groupId>mysql</groupId> 11 <artifactId>mysql-connector-java</artifactId> 12 <version>8.0.18</version> 13 </dependency> 14 <!-- 数据库连接池 --> 15 <dependency> 16 <groupId>com.mchange</groupId> 17 <artifactId>c3p0</artifactId> 18 <version>0.9.5.2</version> 19 </dependency> 20 21 <!--Servlet - JSP --> 22 <dependency> 23 <groupId>javax.servlet</groupId> 24 <artifactId>servlet-api</artifactId> 25 <version>2.5</version> 26 </dependency> 27 <dependency> 28 <groupId>javax.servlet.jsp</groupId> 29 <artifactId>jsp-api</artifactId> 30 <version>2.2</version> 31 </dependency> 32 <dependency> 33 <groupId>javax.servlet</groupId> 34 <artifactId>jstl</artifactId> 35 <version>1.2</version> 36 </dependency> 37 38 <!--Mybatis--> 39 <dependency> 40 <groupId>org.mybatis</groupId> 41 <artifactId>mybatis</artifactId> 42 <version>3.5.2</version> 43 </dependency> 44 <dependency> 45 <groupId>org.mybatis</groupId> 46 <artifactId>mybatis-spring</artifactId> 47 <version>2.0.2</version> 48 </dependency> 49 50 <!--Spring--> 51 <dependency> 52 <groupId>org.springframework</groupId> 53 <artifactId>spring-webmvc</artifactId> 54 <version>5.1.9.RELEASE</version> 55 </dependency> 56 <dependency> 57 <groupId>org.springframework</groupId> 58 <artifactId>spring-jdbc</artifactId> 59 <version>5.1.9.RELEASE</version> 60 </dependency> 61 </dependencies> 62 63 <build> 64 <resources> 65 <resource> 66 <directory>src/main/java</directory> 67 <includes> 68 <include>**/*.properties</include> 69 <include>**/*.xml</include> 70 </includes> 71 <filtering>false</filtering> 72 </resource> 73 <resource> 74 <directory>src/main/resources</directory> 75 <includes> 76 <include>**/*.properties</include> 77 <include>**/*.xml</include> 78 </includes> 79 <filtering>false</filtering> 80 </resource> 81 </resources> 82 </build> 83 84 <properties> 85 <maven.compiler.source>1.8</maven.compiler.source> 86 <maven.compiler.target>1.8</maven.compiler.target> 87 </properties>
二.创建包
1.controller springmvc的
2.dao mybatis的
1 package com.bjpowernode.dao; 2 3 import com.bjpowernode.pojo.Books; 4 import org.apache.ibatis.annotations.Param; 5 6 import java.util.List; 7 8 public interface BookMapper { 9 //增加一本书 10 int addBook(Books books); 11 //删除一本书 12 int deleteBookById(@Param("bookId") int id); 13 //更新一本书 14 int updateBook(Books books); 15 //查询一本书 16 Books queryBookById(@Param("bookId") int id); 17 //查询全部的书 18 List<Books> queryAllBook(); 19 }
1 <?xml version="1.0" encoding="UTF-8" ?> 2 <!DOCTYPE mapper 3 PUBLIC "-//mybatis.org//DTD Config 3.0//EN" 4 "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> 5 <mapper namespace="com.bjpowernode.dao.BookMapper"> 6 <insert id="addBook"> 7 insert into books(bookName,bookCounts,detail)values(#{bookName},#{bookCounts},#{detail}) 8 </insert> 9 <delete id="deleteBookById"> 10 delete from books where bookId=#{bookId} 11 </delete> 12 <update id="updateBook"> 13 update books set #{bookName},#{bookCounts},#{detail} where bookId = #{bookId} 14 </update> 15 <select id="queryBookById" resultType="Books"> 16 select * from books where bookId=#{bookId} 17 </select> 18 <select id="queryAllBook" resultType="Books"> 19 select * from books 20 </select> 21 </mapper>
3.pojo 实体类
类名就是表名
1 package com.bjpowernode.pojo; 2 3 //数据库实体类 4 public class Books { 5 private int bookID; 6 private String bookName; 7 private int bookCounts; 8 private String detail; 9 10 public Books() { 11 } 12 13 public Books(int bookID, String bookName, int bookCounts, String detail) { 14 this.bookID = bookID; 15 this.bookName = bookName; 16 this.bookCounts = bookCounts; 17 this.detail = detail; 18 } 19 20 public int getBookID() { 21 return bookID; 22 } 23 24 public void setBookID(int bookID) { 25 this.bookID = bookID; 26 } 27 28 public String getBookName() { 29 return bookName; 30 } 31 32 public void setBookName(String bookName) { 33 this.bookName = bookName; 34 } 35 36 public int getBookCounts() { 37 return bookCounts; 38 } 39 40 public void setBookCounts(int bookCounts) { 41 this.bookCounts = bookCounts; 42 } 43 44 public String getDetail() { 45 return detail; 46 } 47 48 public void setDetail(String detail) { 49 this.detail = detail; 50 } 51 52 @Override 53 public String toString() { 54 return "Books{" + 55 "bookID=" + bookID + 56 ", bookName='" + bookName + '\'' + 57 ", bookCounts=" + bookCounts + 58 ", detail='" + detail + '\'' + 59 '}'; 60 } 61 }
4.service spring的
1 package com.bjpowernode.service; 2 3 import com.bjpowernode.pojo.Books; 4 import org.apache.ibatis.annotations.Param; 5 6 import java.util.List; 7 8 public interface BookService { 9 //增加一本书 10 int addBook(Books books); 11 //删除一本书 12 int deleteBookById(int id); 13 //更新一本书 14 int updateBook(Books books); 15 //查询一本书 16 Books queryBookById(int id); 17 //查询全部的书 18 List<Books> queryAllBook(); 19 }
1 package com.bjpowernode.service; 2 3 import com.bjpowernode.dao.BookMapper; 4 import com.bjpowernode.pojo.Books; 5 6 import java.util.List; 7 8 public class BookServiceImpl implements BookService { 9 //业务层(Service)调用dao层 10 private BookMapper bookMapper; 11 12 public void setBookMapper(BookMapper bookMapper) { 13 this.bookMapper = bookMapper; 14 } 15 16 @Override 17 public int addBook(Books books) { 18 return bookMapper.addBook(books); 19 } 20 21 @Override 22 public int deleteBookById(int id) { 23 return bookMapper.deleteBookById(id); 24 } 25 26 @Override 27 public int updateBook(Books books) { 28 return bookMapper.updateBook(books); 29 } 30 31 @Override 32 public Books queryBookById(int id) { 33 return bookMapper.queryBookById(id); 34 } 35 36 @Override 37 public List<Books> queryAllBook() { 38 return bookMapper.queryAllBook(); 39 } 40 }
三.配置
1.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"> <!--把配置放到一起统一管理--> <import resource="classpath:spring-dao.xml"></import> <import resource="classpath:spring-serivce.xml"></import> <import resource="classpath:spring-mvc.xml"></import> </beans>
2.db.properties 数据库连接
3.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> <typeAliases> <package name="com.bjpowernode.pojo"/> </typeAliases> <mappers> <mapper class="com.bjpowernode.mapper.BookMapper"></mapper> </mappers> </configuration>
4.spring-dao.xml 相当于mybatis配置
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:context="http://www.springframework.org/schema/context" 5 xsi:schemaLocation="http://www.springframework.org/schema/beans 6 http://www.springframework.org/schema/beans/spring-beans.xsd 7 http://www.springframework.org/schema/context 8 https://www.springframework.org/schema/context/spring-context.xsd"> 9 <!--spring层 整合Mybaits层--> 10 <!--关联数据库配置文件--> 11 <context:property-placeholder location="classpath:db.properties"></context:property-placeholder> 12 13 <!--连接池 14 c3p0:自动化操作(自动化的加载配置文件，并且可以自动设置到对象当中) 15 --> 16 <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> 17 <property name="driverClass" value="${driver}"></property> 18 <property name="jdbcUrl" value="${url"></property> 19 <property name="user" value="${username}"></property> 20 <property name="password" value="${password}"></property> 21 22 <!--c3p0连接池的私有属性--> 23 <property name="maxPoolSize" value="30"></property> 24 <property name="minPoolSize" value="10"></property> 25 <!--关闭连接后不自动commit(提交)--> 26 <property name="autoCommitOnClose" value="false"></property> 27 <!--获取连接超时时间--> 28 <property name="checkoutTimeout" value="10000"></property> 29 <!--当获取连接失败重试次数--> 30 <property name="acquireRetryAttempts" value="2"></property> 31 </bean> 32 33 <!--sqlSessionFactory--> 34 <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> 35 <property name="dataSource" ref="dataSource"></property> 36 <!--绑定Mybatis的配置文件--> 37 <property name="configLocation" value="classpath:mybatis-config.xml"></property> 38 </bean> 39 40 <!--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--> 41 <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> 42 <!--注入 sqlSessionFactory--> 43 <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property> 44 <!--要扫描的dao包--> 45 <property name="basePackage" value="com.bjpowernode.dao"></property> 46 </bean> 47 48 49 </beans>
5.spring-service Spring配置
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:context="http://www.springframework.org/schema/context" 5 xsi:schemaLocation="http://www.springframework.org/schema/beans 6 http://www.springframework.org/schema/beans/spring-beans.xsd 7 http://www.springframework.org/schema/context 8 http://www.springframework.org/schema/context/spring-context.xsd"> 9 <!--spring的业务层service--> 10 11 <!--扫描service下的包--> 12 <context:component-scan base-package="com.bjpowernode.service"></context:component-scan> 13 14 <!--将我们的所有业务类，注入到Spring 可以通过配置，或者注解实现--> 15 <bean id="BookServiceImpl" class="com.bjpowernode.service.BookServiceImpl"> 16 <property name="bookMapper" ref="bookMapper"></property> 17 </bean> 18 19 <!--声明试事务配置--> 20 <!--导入这个已经有事务功能了，但是没有横切(具体)到哪个方法当中--> 21 <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> 22 <!--注入数据源--> 23 <property name="dataSource" ref="dataSource"></property> 24 </bean> 25 </beans>
6.spring-mvc SpringMvc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" 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 https://www.springframework.org/schema/mvc/spring-mvc.xsd"> <!--扫描包--> <context:component-scan base-package="com.bjpowernode.controller"></context:component-scan> <!--静态资源过滤--> <mvc:default-servlet-handler></mvc:default-servlet-handler> <!--注解驱动--> <mvc:annotation-driven></mvc:annotation-driven> <!--视图解析器--> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="internalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/"></property> <property name="suffix" value=".jsp"></property> </bean> </beans>
7.web.xml配置
1 <?xml version="1.0" encoding="UTF-8"?> 2 <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd" 5 version="4.0"> 6 <!--DispatcherServlet--> 7 <servlet> 8 <servlet-name>springmvc</servlet-name> 9 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 10 <init-param> 11 <param-name>contextConfigLocation</param-name> 12 <param-value>classpath:applicationContext.xml</param-value> 13 </init-param> 14 <load-on-startup>1</load-on-startup> 15 </servlet> 16 <servlet-mapping> 17 <servlet-name>springmvc</servlet-name> 18 <url-pattern>/</url-pattern> 19 </servlet-mapping> 20 21 <!--乱码过滤--> 22 <filter> 23 <filter-name>encodingFilter</filter-name> 24 <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> 25 <init-param> 26 <param-name>encoding</param-name> 27 <param-value>utf-8</param-value> 28 </init-param> 29 </filter> 30 <filter-mapping> 31 <filter-name>encodingFilter</filter-name> 32 <url-pattern>/*</url-pattern> 33 </filter-mapping> 34 </web-app>
8.创建一个jsp
