整合SSM框架

整合SSM

基本环境搭建

导入相关的pom依赖！

<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>8.0.18</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>

        <!--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>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.16.10</version>
        </dependency>
    </dependencies>

Maven资源过滤设置

<!--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>

建立基本结构和配置框架！

• com.kuang.pojo

• com.kuang.dao

• com.kuang.service

• com.kuang.controller

• 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>

</configuration>

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">

</beans>

Mybatis层编写

数据库配置文件 database.properties

我用的是8.0的mysql数据库连接版本，加cj同时要加上时区设置

jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmbook?useSSL=false&useUnicode=true&characterEncoding=UTF-8&serverTimezone=GMT
jdbc.username=root
jdbc.password=fengge666

编写MyBatis的核心配置文件

<?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>

    <settings>
        <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>
    
    <typeAliases>
        <package name="com.xlf.pojo"/>
    </typeAliases>

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

</configuration>

编写数据库对应的实体类

使用lombok插件！

package com.xlf.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Books {

    private int bookID;
    private String bookName;
    private int bookCounts;
    private String details;


}

编写Dao层的 Mapper接口！

package com.xlf.dao;

import com.xlf.pojo.Books;
import org.apache.ibatis.annotations.Param;
import org.junit.runners.Parameterized;

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 queryBookById(int id);

    //查询全部的书
    List<Books> queryAllBook();
    
    //模糊搜索
    List<Books> queryBookByName(String bookName);



}

编写接口对应的 Mapper.xml 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.xlf.dao.BookMapper">

    <insert id="addBook" parameterType="Books">
        insert into books (bookName,bookCounts,details) value (#{bookName},#{bookCounts},#{details});
    </insert>

    <delete id="deleteBookById" parameterType="int">
        delete from books where bookID=#{bookId};
    </delete>

    <update id="updateBook" parameterType="Books">
        update books set bookName=#{bookName},bookCounts=#{bookCounts},details=#{details} where bookID=#{bookID};
    </update>

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

    <select id="queryAllBook" resultType="Books">
        select * from books;
    </select>

    <select id="queryBookByName" resultType="Books">
        select * from books where bookName like concat('%','${bookName}','%');
    </select>
    
</mapper>

编写Service层的接口和实现类

接口：

package com.xlf.service;

import com.xlf.pojo.Books;
import org.apache.ibatis.annotations.Param;

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(Books books);

    //查询一本书
    Books queryBookById(int id);

    //查询全部的书
    List<Books> queryAllBook();

    //模糊搜索
    List<Books> queryBookByName(String bookName);


}

实现类：

package com.xlf.service;

import com.xlf.dao.BookMapper;
import com.xlf.pojo.Books;

import java.util.List;

public class BookServiceImpl implements BookService {
    //service调dao层：组合Dao
    private BookMapper bookMapper;

    public void setBookMapper(BookMapper bookMapper) {
        this.bookMapper = bookMapper;
    }

    public int addBook(Books books) {
        return bookMapper.addBook(books);
    }

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

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

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

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

    public List<Books> queryBookByName(String bookName) {
        return bookMapper.queryBookByName(bookName);
    }
}

Spring层编写

配置Spring整合MyBatis，我们这里数据源使用c3p0连接池；

我们去编写Spring整合Mybatis的相关的配置文件；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
       http://www.springframework.org/schema/context/spring-context.xsd">

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

    <!--2.连接池 -->
    <!--数据库连接池
       dbcp 半自动化操作 不能自动连接
       c3p0 自动化操作（自动的加载配置文件 并且设置到对象里面）
   -->
    <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的配置文件 -->
        <property name="configLocation" value="classpath:mybatis-config.xml" />
    </bean>

    <!--配置dao的接口扫描包，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dao包 -->
        <property name="basePackage" value="com.xlf.dao" />
    </bean>

</beans>

Spring整合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">

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


    <!-- 将我们所有的业务类，注入到Spring，可以通过配置或注解实现-->
    <bean id="BookServiceImpl" class="com.xlf.service.BookServiceImpl">
        <property name="bookMapper" ref="bookMapper" />
    </bean>

    <!--声明式事务配置 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />

    </bean>

</beans>

SpringMVC层

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">

    <!-- DispatcherServlet-->
    <servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <!--一定要注意:我们这里加载的是总的配置文件，之前被这里坑了！-->
            <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>

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


</web-app>

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: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
       https://www.springframework.org/schema/context/spring-context.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.xlf.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>

Spring配置整合文件，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-mvc.xml" />
    <import resource="classpath:spring-service.xml" />

</beans>

配置文件，暂时结束！

Controller 和 视图层编写

BookController 类编写

package com.xlf.controller;


import com.xlf.pojo.Books;
import com.xlf.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.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@Controller
@RequestMapping("/book")
public class BookController {

    @Autowired
    @Qualifier("BookServiceImpl")
    private BookService bookService;

    //查询全部的书籍，返回到一个书籍展示页面
    @RequestMapping("/allBook")
    public String list(Model model)
    {
        List<Books> list=bookService.queryAllBook();
        model.addAttribute("list",list);
        return "allBook";
    }

    //跳转到增加书籍页面
    @RequestMapping("/toAddBook")
    public String toAddPaper()
    {
        return "addBook";
    }

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

    @RequestMapping("/toUpdate")
    public String toUpdatePaper(int id,Model model)
    {
        Books books=bookService.queryBookById(id);
        model.addAttribute("QBook",books);
        return "updateBook";
    }

    @RequestMapping("/updateBook")
    public String updateBook(Books books)
    {
        System.out.println("updateBook->"+books);
        bookService.updateBook(books);
        return "redirect:/book/allBook";
    }

    @RequestMapping("/deleteBook/{bookId}")
    public String deleteBook(@PathVariable("bookId") int id)
    {
        bookService.deleteBookById(id);
        return "redirect:/book/allBook";
    }

    @RequestMapping("/queryBook")
    public String queryBook(String queryBookName,Model model)
    {
        List<Books> list = bookService.queryBookByName(queryBookName);
        if (list.size()==0)
        {
            list=bookService.queryAllBook();
            model.addAttribute("error","未找到");
        }
        model.addAttribute("list",list);
        return "allBook";
    }

}

前台页面就不在展示了，过于简谱，重点在于理解ssm框架的整合流程

运行展示

展示结果

运行结果如下所示：

 项目的结构图

 

 总结

学习之后，狂神的配置流程很清晰，期间也出现过错误，有错才能进步，才知道这个报错的原因是啥？学到很多知识。日后还要继续学习ssm框架，打算学完后，将自己之前的项目用SSM框架整一遍。

熟练的应用这套框架，我个人还是喜欢用html页面来做，之后要尝试把jsp全部换成html来开发。

过几天，就要考毛概了，该开始准备预习了。。。。