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整合SSM小例子

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整合SSM小例子

整合SSM小例子

文章目录

  • 1. 整合SSM
      • 1. 环境要求
      • 2. 数据库环境
      • 3. 基本环境搭建
      • 4. Mybatis层编写
      • 5. Spring层
      • 6. SpringMVC层
      • 7. Controller 和 视图层编写
      • 项目结构图

需要自己配置tomcat

项目源码：.git

1. 整合SSM

1. 环境要求

环境：

IDEA / Eclipse
MySQL 5.7 +
Tomcat 9
Maven 3.6

要求：
需要熟练掌握MySQL数据库，Spring，JavaWeb及MyBatis知识，简单的前端知识

2. 数据库环境

创建一个存放书籍数据的数据库表

CREATE DATABASE `ssmbuild`;USE `ssmbuild`;DROP TABLE IF EXISTS `books`;CREATE TABLE `books` (
`bookID` INT(10) NOT NULL AUTO_INCREMENT 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=utf8INSERT  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');

3. 基本环境搭建

  1. 新建一Maven项目！ssmbuild ， 添加web的支持

  2. 导入相关的pom依赖 (版本个人自己选择)

    <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&hange</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&batis</groupId><artifactId>mybatis</artifactId><version>3.5.2</version></dependency><dependency><groupId&batis</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>
</dependencies>

  3. Maven资源过滤设置

    <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>

  4. 建立基本结构和配置框架

    • com.pojo
    • com.dao
    • com.service
      • <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configurationPUBLIC "-//mybatis//DTD Config 3.0//EN"".dtd"> <configuration></configuration> <?xml version="1.0" encoding="UTF-8"?> <beans xmlns=""xmlns:xsi=""xsi:schemaLocation="://www.springframework/schema/beans/spring-beans.xsd"></beans>

4. Mybatis层编写

  1. 数据库配置文件 database.properties

    jdbc.driver&#sql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=123456

  2. 关联数据库，测试连接

  3. 编写MyBatis的核心配置文件

    <?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configurationPUBLIC "-//mybatis//DTD Config 3.0//EN"".dtd">
<configuration><typeAliases><package name="com.pojo"/></typeAliases><mappers><mapper resource="com/l"/></mappers></configuration>

  4. 编写数据库对应的实体类 com.pojo.Books

    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;}

  5. 编写Dao层的 Mapper接口

    import com.pojo.Books;
import java.util.List;public interface BookMapper {//增加一个Bookint addBook(Books book);//根据id删除一个Bookint deleteBookById(int id);//更新Bookint updateBook(Books books);//根据id查询,返回一个BookBooks queryBookById(int id);//查询全部Book,返回list集合List<Books> queryAllBook();}

  6. 编写接口对应的 l 文件。需要导入MyBatis的包

    <?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapperPUBLIC "-//mybatis//DTD Mapper 3.0//EN"".dtd"><mapper namespace="com.dao.BookMapper"><!--增加一个Book--><insert id="addBook" parameterType="Books">insert into ssmbuild.books(bookName,bookCounts,detail)values (#{bookName}, #{bookCounts}, #{detail})</insert><!--根据id删除一个Book--><delete id="deleteBookById" parameterType="int">delete from ssmbuild.books where bookID=#{bookID}</delete><!--更新Book--><update id="updateBook" parameterType="Books">update ssmbuild.booksset bookName = #{bookName},bookCounts = #{bookCounts},detail = #{detail}where bookID = #{bookID}</update><!--根据id查询,返回一个Book--><select id="queryBookById" resultType="Books">select * from ssmbuild.bookswhere bookID = #{bookID}</select><!--查询全部Book--><select id="queryAllBook" resultType="Books">SELECT * from ssmbuild.books</select></mapper>

  7. 编写Service层的接口和实现类
    接口

    import com.pojo.Books;import java.util.List;//BookService:底下需要去实现,调用dao层
public interface BookService {//增加一个Bookint addBook(Books book);//根据id删除一个Bookint deleteBookById(int id);//更新Bookint updateBook(Books books);//根据id查询,返回一个BookBooks queryBookById(int id);//查询全部Book,返回list集合List<Books> queryAllBook();
}

    实现类

    import com.dao.BookMapper;
import com.pojo.Books;
import java.util.List;public class BookServiceImpl implements BookService {//调用dao层的操作，设置一个set接口，方便Spring管理private BookMapper bookMapper;public void setBookMapper(BookMapper bookMapper) {this.bookMapper = bookMapper;}public int addBook(Books book) {return bookMapper.addBook(book);}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();}
}
  • OK，到此，底层需求操作编写完毕

5. Spring层

  1. 配置Spring整合MyBatis，我们这里数据源使用c3p0连接池

  2. 我们去编写Spring整合Mybatis的相关的配置文件
    l

    <?xml version="1.0" encoding="UTF-8"?>
<beans xmlns=""xmlns:xsi=""xmlns:context=""xsi:schemaLocation="://www.springframework/schema/beans/spring-beans.xsd://www.springframework/schema/context/spring-context.xsd"><!-- 配置整合mybatis --><!-- 1.关联数据库文件 --><context:property-placeholder location="classpath:database.properties"/><!-- 2.数据库连接池 --><!--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=&#hange.v2.c3p0.ComboPooledDataSource"><!-- 配置连接池属性 --><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.配置SqlSessionFactory对象 --><bean id="sqlSessionFactory" class=&#batis.spring.SqlSessionFactoryBean"><!-- 注入数据库连接池 --><property name="dataSource" ref="dataSource"/><!-- 配置MyBaties全局配置文件:l --><property name="configLocation" value="l"/></bean><!-- 4.配置扫描Dao接口包，动态实现Dao接口注入到spring容器中 --><!--解释 ：.html--><bean class=&#batis.spring.mapper.MapperScannerConfigurer"><!-- 注入sqlSessionFactory , 这里的 Value 就是上面的 ID --><property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/><!-- 给出需要扫描Dao接口包 --><property name="basePackage" value="com.dao"/></bean></beans>

  3. Spring整合service层

    <?xml version="1.0" encoding="UTF-8"?>
<beans xmlns=""xmlns:xsi=""xmlns:context=""xsi:schemaLocation="://www.springframework/schema/beans/spring-beans.xsd://www.springframework/schema/context/spring-context.xsd"><!-- 扫描service相关的bean --><context:component-scan base-package="com.service" /><!--BookServiceImpl注入到IOC容器中--><bean id="BookServiceImpl" class="com.service.BookServiceImpl"><property name="bookMapper" ref="bookMapper"/></bean><!-- 配置事务管理器 --><bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><!-- 注入数据库连接池 --><property name="dataSource" ref="dataSource" /></bean></beans>
  • Spring层搞定

6. SpringMVC层

  1. <?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns=""xmlns:xsi=""xsi:schemaLocation=" .xsd"version="4.0"><!--DispatcherServlet--><servlet><servlet-name>DispatcherServlet</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>l</param-value></init-param><load-on-startup>1</load-on-startup></servlet><servlet-mapping><servlet-name>DispatcherServlet</servlet-name><url-pattern>/</url-pattern></servlet-mapping><!--encodingFilter--><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过期时间--><session-config><session-timeout>15</session-timeout></session-config></web-app>

  2. <?xml version="1.0" encoding="UTF-8"?>
<beans xmlns=""xmlns:xsi=""xmlns:context=""xmlns:mvc=""xsi:schemaLocation="://www.springframework/schema/beans/spring-beans.xsd://www.springframework/schema/context/spring-context.xsd://www.springframework/schema/mvc/spring-mvc.xsd"><!-- 配置SpringMVC --><!-- 1.开启SpringMVC注解驱动 --><mvc:annotation-driven /><!-- 2.静态资源默认servlet配置--><mvc:default-servlet-handler/><!-- 3.配置jsp 显示ViewResolver视图解析器 --><bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="viewClass" value="org.springframework.web.servlet.view.JstlView" /><property name="prefix" value="/WEB-INF/jsp/" /><property name="suffix" value=".jsp" /></bean><!-- 4.扫描web相关的bean --><context:component-scan base-package=&#ller" /></beans>

  3. Spring配置整合文件&#l

    <?xml version="1.0" encoding="UTF-8"?>
<beans xmlns=""xmlns:xsi=""xsi:schemaLocation="://www.springframework/schema/beans/spring-beans.xsd"><import resource=&#l"/><import resource=&#l"/><import resource=&#l"/></beans>
  • 配置文件，暂时结束

7. Controller 和 视图层编写

  1. BookController 类编写 ， 方法一：查询全部书籍

    @Controller
@RequestMapping("/book")
public class BookController {@Autowired@Qualifier("BookServiceImpl")private BookService bookService;@RequestMapping("/allBook")public String list(Model model) {List<Books> list = bookService.queryAllBook();model.addAttribute("list", list);return "allBook";}
}

  2. 编写首页 index.jsp

    <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<!DOCTYPE HTML>
<html>
<head><title>首页</title><style type="text/css">a {text-decoration: none;color: black;font-size: 18px;}h3 {width: 180px;height: 38px;margin: 100px auto;text-align: center;line-height: 38px;background: deepskyblue;border-radius: 4px;}</style>
</head>
<body><h3><a href="${tPath}/book/allBook">点击进入列表页</a>
</h3>
</body>
</html>

  3. 书籍列表页面 allbook.jsp

    <%@ taglib prefix="c" uri="" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head><title>书籍列表</title><meta name="viewport" content="width=device-width, initial-scale=1.0"><!-- 引入 Bootstrap --><link href=".3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body><div class="container"><div class="row clearfix"><div class="col-md-12 column"><div class="page-header"><h1><small>书籍列表 —— 显示所有书籍</small></h1></div></div></div><div class="row"><div class="col-md-4 column"><a class="btn btn-primary" href="${tPath}/book/toAddBook">新增</a></div></div><div class="row clearfix"><div class="col-md-12 column"><table class="table table-hover table-striped"><thead><tr><th>书籍编号</th><th>书籍名字</th><th>书籍数量</th><th>书籍详情</th><th>操作</th></tr></thead><tbody><c:forEach var="book" items="${('list')}"><tr><td>${BookID()}</td><td>${BookName()}</td><td>${BookCounts()}</td><td>${Detail()}</td><td><a href="${tPath}/book/toUpdateBook?id=${BookID()}">更改</a> |<a href="${tPath}/book/del/${BookID()}">删除</a></td></tr></c:forEach></tbody></table></div></div>
</div>

  4. BookController 类编写 ， 方法二：添加书籍

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

  5. 添加书籍页面：addBook.jsp

    <%@ taglib prefix="c" uri="" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %><html>
<head><title>新增书籍</title><meta name="viewport" content="width=device-width, initial-scale=1.0"><!-- 引入 Bootstrap --><link href=".3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container"><div class="row clearfix"><div class="col-md-12 column"><div class="page-header"><h1><small>新增书籍</small></h1></div></div></div><form action="${tPath}/book/addBook" method="post">书籍名称：<input type="text" name="bookName"><br><br><br>书籍数量：<input type="text" name="bookCounts"><br><br><br>书籍详情：<input type="text" name="detail"><br><br><br><input type="submit" value="添加"></form></div>

  6. BookController 类编写 ， 方法三：修改书籍

    @RequestMapping("/toUpdateBook")
public String toUpdateBook(Model model, int id) {Books books = bookService.queryBookById(id);System.out.println(books);model.addAttribute("book",books );return "updateBook";
}@RequestMapping("/updateBook")
public String updateBook(Model model, Books book) {System.out.println(book);bookService.updateBook(book);Books books = bookService.BookID());model.addAttribute("books", books);return "redirect:/book/allBook";
}

  7. 修改书籍页面 updateBook.jsp

    <%@ taglib prefix="c" uri="" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head><title>修改信息</title><meta name="viewport" content="width=device-width, initial-scale=1.0"><!-- 引入 Bootstrap --><link href=".3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container"><div class="row clearfix"><div class="col-md-12 column"><div class="page-header"><h1><small>修改信息</small></h1></div></div></div><form action="${tPath}/book/updateBook" method="post"><input type="hidden" name="bookID" value="${BookID()}"/>书籍名称：<input type="text" name="bookName" value="${BookName()}"/>书籍数量：<input type="text" name="bookCounts" value="${BookCounts()}"/>书籍详情：<input type="text" name="detail" value="${Detail() }"/><input type="submit" value="提交"/></form></div>

  8. BookController 类编写 ， 方法四：删除书籍

    @RequestMapping("/del/{bookId}")
public String deleteBook(@PathVariable("bookId") int id) {bookService.deleteBookById(id);return "redirect:/book/allBook";
}
  • 配置Tomcat，进行运行
  • 到目前为止，这个SSM项目整合已经完全的OK了，可以直接运行进行测试

项目结构图

本文发布于:2024-02-04 18:36:29，感谢您对本站的认可！

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