SpringMVC:整合SSM

1、创建数据库
2、创建环境,导入依赖

<?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>org.example</groupId>
    <artifactId>ssmbuild</artifactId>
    <version>1.0-SNAPSHOT</version>
<!--依赖 junit 数据库驱动 连接池 jsp-->
    <dependencies>
        <!--Junit-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</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>0.9.5.2</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>taglibs</groupId>
            <artifactId>standard</artifactId>
            <version>1.1.2</version>
        </dependency>
        <!--Mybatis-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.2</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.2</version>
        </dependency>
        <!--Spring-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.1.9.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>4.3.13.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.9.4</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.20</version>
        </dependency>
    </dependencies>
   
    <!--静态资源问题导出-->
    <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>
</project>

3、spring配置文件

```<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>

4、mybatis配置文件 mybatis层

<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <!--本来关联数据源,交给spring去做-->
    <settings>
        <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>

    <typeAliases>
        <package name="com.zhuo.pojo"/>
    </typeAliases>

    <mappers>
        <mapper class="com.zhuo.dao.BookMapper"/>
    </mappers>

</configuration>
</beans>

5、关联数据库

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?serverTimezone=GMT&useSSL=false&useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=123456

6、spring-dao.xml 整合spring层

<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
       http://www.springframework.org/schema/context
       https://www.springframework.org/schema/context/spring-context.xsd">

    <!--关联数据库-->
    <context:property-placeholder location="classpath:database.properties"/>

    <!--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}"/>
    </bean>
    <!--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>

    <!--配置dao接口扫描包,动态实现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"/>
        <!--要扫描的包-->
        <property name="basePackage" value="com.zhuo.dao"/>
    </bean>
</beans>

7、spring-service.xml
注入bean,配置事务

<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: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/aop
       https://www.springframework.org/schema/aop/spring-aop.xsd
       http://www.springframework.org/schema/context
       https://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/tx
       https://www.springframework.org/schema/tx/spring-tx.xsd">
    <!--扫描service下的包-->
    <context:component-scan base-package="com.zhuo.service"/>
    <!--将我们所有的业务类注入到spring中,可以通过配置,也可以通过注解-->
    <bean id="BookServieImpl" class="com.zhuo.service.BookServiceImpl">
        <property name="mapper" ref="bookMapper"/>
    </bean>
    <!--事务-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!--注入数据源-->
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!--aop事务支持-->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="*" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>
    <aop:config>
        <aop:pointcut id="txPointCut" expression="execution(* com.zhuo.dao.*.*(..))"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointCut"/>
    </aop:config>
</beans>

8、spring-mvc.xml

<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
       http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd">

    <!--注解驱动-->
    <mvc:annotation-driven/>
    <!--资源过滤-->
    <mvc:default-servlet-handler/>
    <!--扫描包-->
    <context:component-scan base-package="com.zhuo.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>

8、配置web.xml

<?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_3_1.xsd"
         version="3.1">
    <!--配置DispatcherServlet-->
    <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:applicationContext.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    <!--乱码过滤-->
    <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>
    <!--sessio过期时间-->
    <session-config>
        <session-timeout>5</session-timeout>
    </session-config>
</web-app>

9、建立实体类

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Books {
    private int bookID;
    private String bookName;
    private int bookCounts;
    private String detail;
}

10、编写Dao层

public interface BookMapper {
//    增删改查
    int add(Books books);

    int deleteBookById(int id);

    int updateBook(Books book);

    Books queryBookById(int id);

    List<Books> queryAll();

    Books queryBookByName(@Param("bookName") String QueryBookName);
}
<!DOCTYPE mapper
        PUBLIC "-//mapper.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.zhuo.dao.BookMapper">

    <insert id="add" parameterType="books">
        insert into ssmbuild.books (bookName,bookCounts,detail)
        values (#{bookName},#{bookCounts},#{detail});
    </insert>

    <delete id="deleteBookById" parameterType="int">
        delete from ssmbuild.books where bookID = #{bookID}
    </delete>
    
    <update id="updateBook" parameterType="books">
        update ssmbuild.books
        set bookName = #{bookName},bookCounts = #{bookCounts},detail = #{detail}
        where bookID = #{bookID};
    </update>

    <select id="queryBookById" resultType="books" parameterType="int">
        select *
        from ssmbuild.books where bookID = #{bookID};
    </select>

    <select id="queryAll" resultType="books">
        select *
        from ssmbuild.books;
    </select>

    <select id="queryBookByName" resultType="books">
        select *
        from ssmbuild.books where bookName = #{bookName};
    </select>
</mapper>

12、编写Service层

public interface BookService {
    int add(Books books);

    int deleteBookById(int id);

    int updateBook(Books book);

    Books queryBookById(int id);

    List<Books> queryAll();

    Books queryBookByName(String QueryBookName);
}

public class BookServiceImpl implements BookService{
//    业务层调用dao层
    private BookMapper mapper;

    public void setMapper(BookMapper mapper) {
        this.mapper = mapper;
    }

    public int add(Books books) {
        return mapper.add(books);
    }

    public int deleteBookById(int id) {
        return mapper.deleteBookById(id);
    }

    public int updateBook(Books book) {
        return mapper.updateBook(book);
    }

    public Books queryBookById(int id) {
        return mapper.queryBookById(id);
    }

    public List<Books> queryAll() {
        return mapper.queryAll();
    }

    public Books queryBookByName(String QueryBookName) {
        return mapper.queryBookByName(QueryBookName);
    }
}

13、编写Controller层

@Controller
@RequestMapping("/book")
public class BookController {
    @Autowired
    @Qualifier("BookServieImpl")
    private BookService bookService;

    //查询所有的书记
    @RequestMapping("/allbook")
    public String list(Model model){
        List<Books> list = bookService.queryAll();

        model.addAttribute("list",list);
        return "allbook";
    }
    @RequestMapping("toAddBook")
    public String toAddPapee(){

        return "addbook";
    }
    @RequestMapping("addBook")
    public String addBook(Books books){
        System.out.println("addBook=>" + books);
        bookService.add(books);
        return "redirect:/book/allbook";
    }

    @RequestMapping("toUpdataBook")
    public String updataBook(int id,Model model){
        Books books = bookService.queryBookById(id);
        model.addAttribute("Qbooks",books);
        return "updatabook";
    }
    @RequestMapping("updataBook")
    public String updataBook(Books books){
        System.out.println("updatabook=>" + books);
        bookService.updateBook(books);
        return "redirect:/book/allbook";
    }
    @RequestMapping("deleteBook")
    public String updataBook(int id){
        bookService.deleteBookById(id);
        return "redirect:/book/allbook";
    }
    @RequestMapping("queryBookName")
    public String queryBook(String QueryBookName,Model model){
        System.out.println("============");
        Books books = bookService.queryBookByName(QueryBookName);
        List<Books> list = new ArrayList<Books>();
        list.add(books);
        if(books==null){
          list = bookService.queryAll();
          model.addAttribute("error","未找到");
        }
        model.addAttribute("list",list);
        return "allbook";
    }
}
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