ssm 整合 框架搭建

ssm 整合 Mybatis层

创建数据库：

CREATE DATABASE ssmbuild;
USE ssmbuild;

创建表：

CREATE TABLE `books`(
`bookID` INT NOT NULL AUTO_INCREMENT COMMENT '书id',
`bookName` VARCHAR(100) NOT NULL COMMENT '书名',
`bookCounts` INT NOT NULL COMMENT '数量',
`detail` VARCHAR(200) NOT NULL COMMENT '描述',
KEY `bookID`(`bookID`)
)ENGINE=INNODB DEFAULT CHARSET=utf8

插入数据：

INSERT INTO `books`(`bookID`,`bookName`,`bookCounts`,`detail`)VALUES
(1,'Java',1,'从入门到放弃'),
(2,'MySQL',10,'从删库到跑路'),
(3,'Linux',5,'从进门到进牢')

第一步：新建一个maven项目并导入依赖：

opm依赖：

<dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
    </dependency>
<!--    mysql驱动-->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.47</version>
    </dependency>
<!--    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>

<!--    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>5.1.9.RELEASE</version>
    </dependency>

第二步：建立实体类：

package com.xiaofu.pojo;

public class Books {
    private int bookID;
    private String bookName;
    private int bookCounts;
    private String detail;

    public Books() {
    }

    public Books(int bookID, String bookName, int bookCounts, String detail) {
        this.bookID = bookID;
        this.bookName = bookName;
        this.bookCounts = bookCounts;
        this.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 getBookCounts() {
        return bookCounts;
    }

    public void setBookCounts(int bookCounts) {
        this.bookCounts = bookCounts;
    }

    public String getDetail() {
        return detail;
    }

    public void setDetail(String detail) {
        this.detail = detail;
    }

    @Override
    public String toString() {
        return "Books{" +
                "bookID=" + bookID +
                ", bookName='" + bookName + '\'' +
                ", bookCounts=" + bookCounts +
                ", detail='" + detail + '\'' +
                '}';
    }
}

第三步：编写接口和实现：

 BookMapper：

package com.xiaofu.mapper;

import com.xiaofu.pojo.Books;

import java.util.List;

public interface BookMapper {

    //增加一本书
    int addBook(Books books);
    //删除一本书
    int deleteBookById(int id);
    //更新一本书
    int updateBook(int books);
    //查询一本书
    int queryBookById(int id);
    //查询所有书
    List<Books> queryAllBook();
}

 BookMapper.xml：

<?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">

<!--namespace= 绑定一个Dao/mapper接口-->
<mapper namespace="com.xiaofu.mapper.BookMapper">
<!--插入一本书-->
    <insert id="addBook" parameterType="Books">
        insert into ssmbuild.books (bookName,bookCounts,detail)
        values (#{bookName},#{bookCounts},#{detail})
    </insert>
<!--删除一本书-->
    <insert id="deleteBookById" parameterType="int" >
        delete from ssmbuild.books where bookID = #{bookID}
    </insert>
<!--    更新一本书-->
    <update id="updateBook" parameterType="Books">
        update ssmbuild.books
        set bookName = #{bookName},bookCounts=#{bookCounts},detail=#{detail}
        where bookID=#{bookID};
    </update>
<!--    查询一本书-->
    <select id="queryBookById" resultType="Books">
        select * from ssmbuild.books
        where bookID = #{bookID}
    </select>
<!--    查询所有书-->
    <select id="queryAllBook" resultType="Books">
        select * from ssmbuild.books
    </select>


</mapper>

然后绑定写好的mapper：

<?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核心配置文件-->
<configuration>
<!--给pojo包下的所有类起别名-->
    <typeAliases>
        <package name="com.xiaofu.pojo"/>
    </typeAliases>


    <mappers>
        <mapper class="com.xiaofu.mapper.BookMapper"/>
    </mappers>

</configuration>

第四步：编写service层（业务层）：

 BookService：

package com.xiaofu.service;

import com.xiaofu.pojo.Books;

import java.util.List;

public interface BookService {
    //增加一本书
    int addBook(Books books);
    //删除一本书
    int deleteBookById(int id);
    //更新一本书
    int updateBook(int books);
    //查询一本书
    int queryBookById(int id);
    //查询所有书
    List<Books> queryAllBook();
}

 BookServiceimpl：

package com.xiaofu.service;

import com.xiaofu.mapper.BookMapper;
import com.xiaofu.pojo.Books;

import java.util.List;

public class BookServiceImpl implements BookService {
    //service调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 deleteBookById(int id) {
        return bookMapper.deleteBookById(id);
    }

    @Override
    public int updateBook(int books) {
        return bookMapper.updateBook(books);
    }

    @Override
    public int queryBookById(int id) {
        return bookMapper.queryBookById(id);
    }

    @Override
    public List<Books> queryAllBook() {
        return bookMapper.queryAllBook();
    }
}

 

 ssm整合Spring层

第一步：配置dao层：

  database.properties:

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/ssmbuild?useUnicode=true&useSSL=false&characterEncoding=utf-8&serverTimezone=Asia/Shanghai&autoReconnect=true&failOverReadOnly=false
jdbc.username=root
jdbc.password=1234

 Spring-dao.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"
       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">
<!--    1.关联数据库配置文件-->
    <context:property-placeholder location="classpath:database.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"/>
        <!--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>

<!--   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"/>
        <!--要扫描的包-->
        <property name="basePackage" value="com.xiaofu.mapper"/>
    </bean>

</beans>

第二步：配置service层：

 Spring-service.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"
       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">


<!--    1.扫描service下的包-->
    <context:component-scan base-package="com.xiaofu.service"/>

<!--    2.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-->
    <bean id="BookServiceImpl" class="com.xiaofu.service.BookServiceImpl">
        <property name="bookMapper" ref="bookMapper"/>
    </bean>

<!--    3.声明式事物配置-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!--注入数据源-->
        <property name="dataSource" ref="dataSource"/>

    </bean>

</beans>

第三步：在主配置文件中导入dao层和service层的配置：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd">

    <import resource="classpath:Spring-dao.xml"/>
    <import resource="classpath:Spring-service.xml"/>

</beans>

 

ssm 整合 SpringMVC层

第一步：配置web.xml：

 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_4_0.xsd"
         version="4.0">
  <!--    配置DispatchServlet 这个是springMVC的核心；请求分发器，前端控制器-->
  <servlet>
    <servlet-name>springmvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <!--  DispatchServlet要绑定的配置文件  -->
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:applicationContext.xml</param-value>
    </init-param>
    <!--    启动级别-->
    <load-on-startup>1</load-on-startup>
  </servlet>
  <!--
  在SpringMVC中，/ /*
  /：只匹配所有的请求，不会去匹配jsp页面
  /*：匹配所有的请求，包括jsp页面
  -->
  <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>

<!--  Session -->
  <session-config>
    <session-timeout>15</session-timeout>
  </session-config>


</web-app>

第二步：配置SpringMVC：

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

    <!--自动扫描包，让指定包下的注解生效，由IOC容器统一管理-->
    <context:component-scan base-package="com.xiaofu.controller"/>
    <!--让spring mvc不处理静态资源-->
    <mvc:default-servlet-handler/>
    <!--支持注解驱动 -->
    <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/"/> <!--前缀-->
        <property name="suffix" value=".jsp"/> <!--后缀-->
    </bean>

</beans>

第三步：在主配置文件中导入springMVC层的配置：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://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>

 

测试一下：

import com.xiaofu.pojo.Books;
import com.xiaofu.service.BookService;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class bookText {
    @Test
    public void BookText(){
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        BookService bookServiceImpl = context.getBean("BookServiceImpl", BookService.class);
        for (Books books : bookServiceImpl.queryAllBook()) {
            System.out.println(books);
        }
    }
}

运行测试方法：

 数据查了出来。