整合SSM框架 -- 简单基础SSM项目

整合SSM框架 – 第一个SSM项目

学完MyBatis、Spring、SpringMVC，做一个基于SSM框架的基础项目–书籍管理系统，要求可以实现数据的增删改查，业务运行逻辑明了，分层开发，用来巩固学习

目标：

• 配置SSM框架
• 实现基础的增删改查功能
• 具备后续方便的拓展功能
• 界面设计整洁

最终效果：

• 全部书籍页面

  

• 新增书籍页面

  

• 查询书籍页面

  

---

环境：

开发环境

环境：

• IDEA 2021.2.1
• MySQL 8
• Tomcat 9
• Maven 3.8

数据库环境

创建一个存放书籍数据的数据库表

数据库ssmbuild 书籍信息表books 主键bookID自动增长 所有字段都不能为空

CREATE
    DATABASE `ssmbuild`;

USE
    `ssmbuild`;

-- 创建图书表
CREATE TABLE `books`
(
    `bookID`     INT(10)      NOT NULL AUTO_INCREMENT COMMENT '图书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;

-- 插入数据
INSERT INTO `books`(`bookID`, `bookName`, `bookCounts`, `detail`)
VALUES (1, 'JAVA', 34, '从入门到放弃'),
       (2, 'MySQL', 23, '从删库到跑路'),
       (3, 'Linux', 33, '从进门到进牢')

基本环境搭建

项目结构

项目搭建

1. 新建一个Maven项目 ssmbuild ， 添加JavaWeb框架的支持

2. 在pom文件中导入所需依赖

   <dependencies>
       
       <dependency>
           <groupId>junitgroupId>
           <artifactId>junitartifactId>
           <version>4.13.2version>
       dependency>
       
       <dependency>
           <groupId>mysqlgroupId>
           <artifactId>mysql-connector-javaartifactId>
           <version>8.0.26version>
       dependency>
       
       <dependency>
           <groupId>com.mchangegroupId>
           <artifactId>c3p0artifactId>
           <version>0.9.5.5version>
       dependency>
   
       
       <dependency>
           <groupId>javax.servletgroupId>
           <artifactId>servlet-apiartifactId>
           <version>2.5version>
       dependency>
       <dependency>
           <groupId>javax.servlet.jspgroupId>
           <artifactId>jsp-apiartifactId>
           <version>2.2version>
       dependency>
       <dependency>
           <groupId>javax.servletgroupId>
           <artifactId>jstlartifactId>
           <version>1.2version>
       dependency>
   
       
       <dependency>
           <groupId>org.mybatisgroupId>
           <artifactId>mybatisartifactId>
           <version>3.5.7version>
       dependency>
       <dependency>
           <groupId>org.mybatisgroupId>
           <artifactId>mybatis-springartifactId>
           <version>2.0.6version>
       dependency>
   
       
       <dependency>
           <groupId>org.springframeworkgroupId>
           <artifactId>spring-webmvcartifactId>
           <version>5.3.11version>
       dependency>
       
       <dependency>
           <groupId>org.springframeworkgroupId>
           <artifactId>spring-jdbcartifactId>
           <version>5.3.11version>
       dependency>
   
       
       <dependency>
           <groupId>org.aspectjgroupId>
           <artifactId>aspectjweaverartifactId>
           <version>1.9.7version>
       dependency>
   
       
       <dependency>
           <groupId>org.projectlombokgroupId>
           <artifactId>lombokartifactId>
           <version>1.18.22version>
       dependency>
       
       <dependency>
           <groupId>log4jgroupId>
           <artifactId>log4jartifactId>
           <version>1.2.17version>
       dependency>
   dependencies>
   

   

3. 配置项目依赖

   

   

4. Maven资源过滤设置

   
   <build>
       <resources>
           <resource>
               <directory>src/main/javadirectory>
               <includes>
                   <include>**/*.propertiesinclude>
                   <include>**/*.xmlinclude>
               includes>
               <filtering>falsefiltering>
           resource>
           <resource>
               <directory>src/main/resourcesdirectory>
               <includes>
                   <include>**/*.propertiesinclude>
                   <include>**/*.xmlinclude>
               includes>
               <filtering>falsefiltering>
           resource>
       resources>
   build>
   

5. 建立基本结构和配置框架

   

6. 编写java代码

   • 编写数据库对应的实体类 pojo.Books.java (注：这里使用了Lombok插件)

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

   • 编写Mapper接口 mapper/BookMapper.java

     public interface BookMapper {
     
         // 增加
         int insertBook(Books books);
     
         // 删除
         int deleteBook(@Param("bookId") int id);
     
         // 修改
         int updateBook(Books books);
     
         // ID查询
         Books queryBookById(int id);
     
         // 查询全部
         List<Books> queryAllBook();
     
         // 模糊查询
         List<Books> queryBookName(@Param("bookName") String bookName);
     
     }
     

   • 编写Mapper接口对应的XML文件

     
     DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
     <mapper namespace="com.codeonce.mapper.BookMapper">
     
         
         <insert id="insertBook" parameterType="Books">
             INSERT INTO ssmbuild.books(bookName, bookCounts, detail)
             VALUES (#{bookName}, #{bookCounts}, #{detail});
         insert>
     
         
         <delete id="deleteBook" 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">
             SELECT *
             FROM ssmbuild.books
             WHERE bookID = #{bookId};
         select>
     
         
         <select id="queryAllBook" resultType="Books">
             SELECT *
             FROM ssmbuild.books;
         select>
     
         
         <select id="queryBookName" resultType="Books">
             SELECT *
             FROM ssmbuild.books
             WHERE bookName LIKE CONCAT('%', #{bookName}, '%');
         select>
     mapper>
     

   • 编写Service层接口 service/BookService.java

     public interface BookService {
     
         // 增加
         int insertBook(Books books);
     
         // 删除
         int deleteBook(@Param("bookId") int id);
     
         // 修改
         int updateBook(Books books);
     
         // ID查询
         Books queryBookById(int id);
     
         // 查询全部
         List<Books> queryAllBook();
     
         // 查询全部
         List<Books> queryBookName(String bookName);
     }
     

   • 编写Service层接口实现类 service/BookServiceImpl.java

     public class BookServiceImpl implements BookService {
         // 配置LOG4J
         private static final Logger logger = Logger.getLogger(BookServiceImpl.class);
     
         // service调用mapper层
         private BookMapper bookMapper;
     
         public void setBookMapper(BookMapper bookMapper) {
             this.bookMapper = bookMapper;
         }
     
         @Override
         public int insertBook(Books books) {
             return bookMapper.insertBook(books);
         }
     
         @Override
         public int deleteBook(int id) {
             return bookMapper.deleteBook(id);
         }
     
         @Override
         public int updateBook(Books books) {
             return bookMapper.updateBook(books);
         }
     
         @Override
         public Books queryBookById(int id) {
             return bookMapper.queryBookById(id);
         }
     
         @Override
         public List<Books> queryAllBook() {
             return bookMapper.queryAllBook();
         }
     
         @Override
         public List<Books> queryBookName(String bookName) {
             return bookMapper.queryBookName(bookName);
         }
     }
     

   • 编写控制层 controller/BookController.java

     import com.codeonce.pojo.Books;
     import com.codeonce.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 java.util.List;
     
     @Controller
     @RequestMapping("/book")
     public class BookController {
     
         // controller 调用 service层
         @Autowired
         @Qualifier("BookServiceImpl")
         private BookService bookService;
     
         // 查询全部的书籍,并且返回到一书籍展示的页面
         @RequestMapping("/allBook")
         public String queryAll(Model model) {
             List<Books> booksList = bookService.queryAllBook();
             model.addAttribute("booksList", booksList);
             return "allBook";
         }
     
         // 跳转到增加书籍页面
         @RequestMapping("/toAddBook")
         public String toAddBookPaper() {
             return "addBook";
         }
     
         // 添加书籍的请求
         @RequestMapping("/addBook")
         public String insertBook(Books books) {
             System.out.println("addBook=>" + books);
             int result = bookService.insertBook(books);
             if (result > 0) {
                 System.out.println("添加数据成功" + books);
             }
             return "redirect:/book/allBook";
         }
     
         // 跳转到修改书籍页面
         @RequestMapping("/toUpdateBook/{bookID}")
         public String toUpdateBookPaper(@PathVariable("bookID") int id, Model model) {
             Books books = bookService.queryBookById(id);
             model.addAttribute("books", books);
             return "updateBook";
         }
     
         // 修改书籍请求
         @RequestMapping("/updateBook")
         public String updateBook(Books books) {
             System.out.println("updateBook=>" + books);
             int result = bookService.updateBook(books);
             if (result > 0) {
                 System.out.println("修改数据成功" + books);
             }
             return "redirect:/book/allBook";
         }
     
         // 删除书籍请求
         @RequestMapping("/deleteBook/{bookID}")
         public String deleteBook(@PathVariable("bookID") int id) {
             int result = bookService.deleteBook(id);
             if (result > 0) {
                 System.out.println("删除数据成功" + id);
             }
             return "redirect:/book/allBook";
         }
     
         // 查询书籍
         @RequestMapping("/queryBook")
         public String queryBook(String bookName, Model model) {
             // bookName = "%" + bookName + "%";
             List<Books> booksList = bookService.queryBookName(bookName);
             System.err.println("queryBook" + booksList);
             model.addAttribute("booksList", booksList);
             return "allBook";
         }
     
     }
     

7. 配置文件

   • 数据库参数配置文件 resources/database.properties

     jdbc.driver=com.mysql.cj.jdbc.Driver
     jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai
     jdbc.username=root
     jdbc.password=admin
     

   • LOG4J日志配置文件 resources/log4j.properties

     # 将等级为DEBUG的日志信息输出到console和file这两个目的地，console和file的定义在下面的代码
     log4j.rootLogger=DEBUG,console,file
     # 控制台输出的相关设置
     log4j.appender.console=org.apache.log4j.ConsoleAppender
     log4j.appender.console.Target=System.out
     log4j.appender.console.Threshold=DEBUG
     log4j.appender.console.layout=org.apache.log4j.PatternLayout
     log4j.appender.console.layout.ConversionPattern=[%c]-%m%n
     log4j.appender.Console.encoding=UTF-8
     # 文件输出的相关设置
     log4j.appender.file=org.apache.log4j.RollingFileAppender
     log4j.appender.file.File=./log/com.mydemo.log
     log4j.appender.file.MaxFileSize=10mb
     log4j.appender.file.Threshold=DEBUG
     log4j.appender.file.layout=org.apache.log4j.PatternLayout
     log4j.appender.file.layout.ConversionPattern=[%p][%d{yyyy-MM-dd}][%c]%m%n
     log4j.appender.file.encoding=UTF-8
     # 日志输出级别
     log4j.logger.org.mybatis=DEBUG
     log4j.logger.java.sql=DEBUG
     log4j.logger.java.sql.Statement=DEBUG
     log4j.logger.java.sql.ResultSet=DEBUG
     log4j.logger.java.sql.PreparedStatement=DEBUG
     

   • 写dao层操作配置文件 resources/spring-dao.xml

     
     <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xmlns="http://www.springframework.org/schema/beans"
            xmlns:context="http://www.springframework.org/schema/context"
            xsi:schemaLocation="http://www.springframework.org/schema/beans
                 https://www.springframework.org/schema/beans/spring-beans.xsd
                 http://www.springframework.org/schema/context
                 http://www.springframework.org/schema/context/spring-context-4.0.xsd">
     
         
         <context:property-placeholder location="classpath:database.properties"/>
     
         
     
         <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}"/>
     
             
             <property name="maxPoolSize" value="30"/>
             <property name="minPoolSize" value="10"/>
             
             <property name="autoCommitOnClose" value="false"/>
             
             <property name="checkoutTimeout" value="10000"/>
             
             <property name="acquireRetryAttempts" value="2"/>
         bean>
         
         
     
         
         <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
             <property name="dataSource" ref="dataSource"/>
             
             <property name="configLocation" value="classpath:mybatis-config.xml"/>
         bean>
     
         
         <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
             
             <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
             
             <property name="basePackage" value="com.codeonce.mapper"/>
         bean>
     
     beans>
     

   • 写service层操作配置文件 resources/spring-service.xml

     
     <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/context
                http://www.springframework.org/schema/context/spring-context.xsd
                http://www.springframework.org/schema/aop
                https://www.springframework.org/schema/aop/spring-aop.xsd
                http://www.springframework.org/schema/tx
                http://www.springframework.org/schema/tx/spring-tx.xsd">
     
         
         <context:component-scan base-package="com.codeonce.service"/>
     
         
         <bean id="BookServiceImpl" class="com.codeonce.service.BookServiceImpl">
             <property name="bookMapper" ref="bookMapper"/>
         bean>
     
         
         <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
             
             <property name="dataSource" ref="dataSource"/>
         bean>
     
         
         
         
         <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.codeonce.mapper.*.*(..))"/>
             
             <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointCut"/>
         aop:config>
     
     beans>
     

   • 写MVC操作配置文件 resources/spring-mvc.xml

     
     <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">
     
         
         <mvc:annotation-driven/>
     
         
         <mvc:default-servlet-handler/>
     
         
         <context:component-scan base-package="com.codeonce.controller"/>
     
         
         <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="viewResolver">
             
             <property name="prefix" value="/WEB-INF/jsp/"/>
             
             <property name="suffix" value=".jsp"/>
         bean>
     
     beans>
     

   • mybatis框架配置 resources/mybatis-config.xml

     
     DOCTYPE configuration PUBLIC "-//mybatis.ory//DTD Config 3.0//EN" "htpp://mybatis.org/dtd/mybatis-3-config.dtd">
     
     <configuration>
     
         
         <settings>
             
             <setting name="logImpl" value="STDOUT_LOGGING"/>
             
         settings>
     
         
         <typeAliases>
             <typeAlias type="com.codeonce.pojo.Books" alias="Books"/>
         typeAliases>
     
         <mappers>
             <mapper class="com.codeonce.mapper.BookMapper"/>
         mappers>
     
     configuration>
     

   • 导入所有配置文件 resources/applicationContext.xml

     
     <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xmlns:context="http://www.springframework.org/schema/context"
            xmlns="http://www.springframework.org/schema/beans"
            xsi:schemaLocation="http://www.springframework.org/schema/beans
                 https://www.springframework.org/schema/beans/spring-beans.xsd
                 http://www.springframework.org/schema/context
                 https://www.springframework.org/schema/context/spring-context.xsd">
     
         
         <context:annotation-config/>
     
         <import resource="classpath:spring-dao.xml"/>
         <import resource="classpath:spring-service.xml"/>
         <import resource="classpath:spring-mvc.xml"/>
     
     beans>
     

   • 在web.xml 中绑定配置 web/WEB-INF/web.xml

     
     <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">
     
         
         <servlet>
             <servlet-name>DispatcherServletservlet-name>
             <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
             
             <init-param>
                 <param-name>contextConfigLocationparam-name>
                 <param-value>classpath:applicationContext.xmlparam-value>
             init-param>
             
             <load-on-startup>1load-on-startup>
         servlet>
     
         
         <servlet-mapping>
             <servlet-name>DispatcherServletservlet-name>
             <url-pattern>/url-pattern>
         servlet-mapping>
     
         
         <filter>
             <filter-name>encodingFilterfilter-name>
             <filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
             <init-param>
                 <param-name>encodingparam-name>
                 <param-value>utf-8param-value>
             init-param>
         filter>
         <filter-mapping>
             <filter-name>encodingFilterfilter-name>
             <url-pattern>/*url-pattern>
         filter-mapping>
     
         
         <session-config>
             <session-timeout>15session-timeout>
         session-config>
     
     web-app>
     

8. JSP页面

   • 

   • index.jsp 跳转页面 web/index.jsp

     <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
     
     
     
         
         
     
     
     
     
         点击进入列表页
     
     
     
     

   • 书籍列表JSP web/WEB-INF/jsp/allBook.jsp （集成查询所有和模糊查询）

     <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
     <%@ page contentType="text/html;charset=UTF-8" language="java" %>
     
     
     
         
         
         
         
         
         
     
     
     
     
     
     
     
         
     
             
     
                 
     
                     
     
                         书籍列表 —— 显示所有书籍
                     
                 
             
         
     
         
     
             <%--新增--%>
             
     
                  全部书籍 
                  新增书籍 
             
             
     
             <%--查询--%>
             
     
                 
     
                     
     
     <%--                    未查询到任何结果--%>
                         
                             
                         
                     
                      查询 
                 
             
     
         
     
         
     
             
     
                 
                         
     
                     
     
                     
     
                         
     书籍编号
                         
     书籍名字
                         
     书籍数量
                         
     书籍详情
                         
     操作
                     
                     
     
                     
     
                     
     
                             
     ${book.bookID}
                             
     ${book.bookName}
                             
     ${book.bookCounts}
                             
     ${book.detail}
                             
     
                                 更改
                                 |
                                 删除
                             
                         
                     
                     
                 
             
         
     
     
     

   • 新增书籍页面 web/WEB-INF/jsp/addBook.jsp

     <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
     <%@ page contentType="text/html;charset=UTF-8" language="java" %>
     
     
     
         
         
         
         
     
     
     
     
         
     
             
     
                 
     
                     
     
                         新增书籍
                     
                 
             
         
         
     
             
     
                 书籍名称:
                 
             
             
     
                 书籍数量:
                 
             
             
     
                 书籍描述:
                 
             
             
     
                 
             
         
     
     
     
     
     

   • 更新书籍JSP页面 web/WEB-INF/jsp/updateBook.jsp （此处可以使用新增书籍页面复用）

     <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
     <%@ page contentType="text/html;charset=UTF-8" language="java" %>
     
     
     
         
         
         
         
     
     
     
     
         
     
             
     
                 
     
                     
     
                         修改书籍
                     
                 
             
         
         
     
             
     
                 书籍名称:
                 
             
             
     
                 书籍数量:
                 
             
             
     
                 书籍描述:
                 
             
             
     
                 
                 
             
         
     
     
     
     
     

     总结

     1. 代码还有很多地方可以改进 比如页面代码复用 方法复用 动态SQL
     2. 后续进行项目拓展都可以基于需求进行增加mapper接口