ICode9
精准搜索请尝试： 精确搜索
首页
编程语言>
数据库
系统相关
互联网
其他分享
Python
Java
JavaScript
android
PHP
首页 > 其他分享> 文章详细

简单SSM整合

2022-05-20 21:02:12  阅读：163  来源： 互联网

标签：int SSM books 整合 简单 import Books com public


准备工作

1、新建一个Maven web工程，导入相关的依赖 
<dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>

        <!--数据库驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.21</version>
        </dependency>

        <!--数据库连接池-->
        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.5.5</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>2.2.1-b03</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>3.5.6</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.7</version>
        </dependency>

        <!--Spring-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.3.18</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.3.19</version>
        </dependency>

        <!--lombok-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.24</version>
        </dependency>
    </dependencies>

2、建立项目需要的包，项目的整体结构为：

SSM整合：Dao层

1、数据库建表

CREATE DATABASE ssmbuild;

USE ssmbuild;

CREATE table books(
bookID INT(10) not null COMMENT '书id',
bookName VARCHAR(100) not null COMMENT '书名',
bookCounts INT(11) not null COMMENT '数量',
detail VARCHAR(200) not null COMMENT '描述',
KEY bookID(bookID)
)engine=innodb default CHARSET=utf8

insert into books(bookID,bookName,bookCounts,detail) VALUES 
(1,'JAVA',1,'从入门到精通'),
(2, 'MySQL',10,'从入门到精通'),
(3,'Linux',5,'从入门到精通');

2、在pojo包新建数据库实体类Books

package com.chen.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 detail;
}

3、dao层编写实体类接口BookMapper

package com.chen.dao;
import com.chen.pojo.Books;
import java.util.List;

public interface BookMapper {
    int addBook(Books books);
    int deleteBookById(int id);
    int updateBook(Books books);
    Books queryBookById(int id);
    List<Books> queryAllBook();
}

4、根据BookMapper接口，编写BookMapper.xml文件，完成对数据库的增删改查操作

<?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.chen.dao.BookMapper">
    <insert id="addBook" 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=#{id}
    </delete>

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

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

    <select id="queryAllBook" resultType="Books">
        select * from ssmbuild.books
    </select>
</mapper>

5、配置数据库源
注意：MySQL版本大于8的话需要设置时区，不然会报错

jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql:///ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf8&serverTimezone=Asia/Shanghai
jdbc.username=root
jdbc.password=123456

6、编写mybatis-config.xml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>
    <!--配置数据源，由Spring完成-->
    <typeAliases>
        <!--自动给这个包下的类起别名-->
        <package name="com.chen.pojo"/>
    </typeAliases>
</configuration>

7、编写spring-dao.xml配置文件，将Dao层的类交给Spring容器托管

<?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">

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

    <!--2、配置数据库连接池-->
    <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>

    <!--3、sqlSessionFactory-->
    <bean id ="sqlSessionFactory" class ="org.mybatis.spring.SqlSessionFactoryBean" >
        <property name ="dataSource" ref ="dataSource" />
        <property name ="configLocation" value ="classpath:mybatis-config.xml" />
    </bean >

    <!--4、配置dao层接口扫描包，动态的实现dao层接口可以注入到Spring容器中-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <property name="basePackage" value="com.chen.dao"/>
    </bean>

</beans>

SSM整合：Service层

Service层叫服务层，被称为服务，粗略的理解就是对一个或多个DAO进行的再次封装，封装成一个服务，但本文只是简单整合，所以Service层实现的功能和Dao层差不多。
1、在service包下新建BookService接口

package com.chen.service;
import com.chen.pojo.Books;
import java.util.List;

public interface BookService {
    int addBook(Books books);
    int deleteBookById(int id);
    int updateBook(Books books);
    Books queryBookById(int id);
    List<Books> queryAllBook();
}

2、编写BookService接口的实现类BookServiceImpl

package com.chen.service;
import com.chen.dao.BookMapper;
import com.chen.pojo.Books;
import java.util.List;
public class BookServiceImpl implements BookService{
    private BookMapper mapper;

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

    @Override
    public int addBook(Books books) {
        return mapper.addBook(books);
    }

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

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

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

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

3、将Service层下的类交给Spring容器托管

<?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">

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

    <!--2、将所有的业务类注入到spring中，可以直接配置，也可以通过注解-->
    <!--用注解的话，直接指定注解扫描的包：<context:component-scan base-package="com.chen.service"/>-->
    <bean id="bookServiceImpl" class="com.chen.service.BookServiceImpl">
        <property name="mapper" ref="bookMapper"/>
    </bean>

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

SSM整合：Controller层

1、controller包下建立BookController类

package com.chen.controller;
import com.chen.pojo.Books;
import com.chen.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.util.List;

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

    @RequestMapping("/allBook")
    public String allBook(Model model){
        List<Books> books = bookService.queryAllBook();
        model.addAttribute("book", books);
        return "allBook";
    }
}

2、在WEB-INF目录下新建jsp目录，在jsp目录下新建allBook.jsp文件作为BookController类中allBook方法的跳转页面。

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<h3>书籍展示</h3>
</body>
</html>

3、编写spring-mvc.xml配置文件

<?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">

    <!--1、注解驱动-->
    <mvc:annotation-driven/>

    <!--2、静态资源过滤-->
    <mvc:default-servlet-handler/>

    <!--3、自动扫描包-->
    <context:component-scan base-package="com.chen.controller"/>

    <!--4、试图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
</beans>

4、最后配置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_4_0.xsd"
         version="4.0">

    <!--1、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>

    <!--2、乱码解决-->
    <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>

    <!--3、Session-->
    <session-config>
        <session-timeout>15</session-timeout>
    </session-config>
</web-app>

标签：int,SSM,books,整合,简单,import,Books,com,public
来源： https://www.cnblogs.com/lchen-java/p/16293697.html

本站声明： 1. iCode9 技术分享网（下文简称本站）提供的所有内容，仅供技术学习、探讨和分享；
2. 关于本站的所有留言、评论、转载及引用，纯属内容发起人的个人观点，与本站观点和立场无关；
3. 关于本站的所有言论和文字，纯属内容发起人的个人观点，与本站观点和立场无关；
4. 本站文章均是网友提供，不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属；如您发现该文章侵犯了您的权益，可联系我们第一时间进行删除；
5. 本站为非盈利性的个人网站，所有内容不会用来进行牟利，也不会利用任何形式的广告来间接获益，纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。

关于我们 | 联系我们 | 留言反馈

专注分享技术，共同学习，共同进步。侵权联系[81616952@qq.com]

Copyright (C)ICode9.com, All Rights Reserved.

ICode9版权所有