6_SSM

一. ssm整合

1.1 项目创建

1.1.1 创建Maven项目

创建一个普通的Maven-web项目,名称为ssm
记得勾选上Create from archetype然后选择后缀为maven-archetype-webapp的选项

1.1.2 导入依赖(pom.xml)

<dependencies>
    <!--Junit-->
    <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>5.1.47</version>
    </dependency>
    <!--数据库连接池: druid 德鲁伊-->
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>druid</artifactId>
        <version>1.1.16</version>
    </dependency>

    <!--Servlet-->
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <version>2.5</version>
    </dependency>
    <!--JSP-->
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jsp-api</artifactId>
        <version>2.0</version>
    </dependency>
    <!--Jstl-->
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
        <version>1.2</version>
    </dependency>

    <!--mybatis-->
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis</artifactId>
        <version>3.5.3</version>
    </dependency>
    <!--mybatis-spring-->
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis-spring</artifactId>
        <version>2.0.6</version>
    </dependency>
    <!--spring-webmvc-->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>5.3.5</version>
    </dependency>
    <!--spring-jdbc-->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
        <version>5.3.5</version>
    </dependency>
    <!--lombok -->
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>1.18.16</version>
        <scope>provided</scope>
    </dependency>
    <!--aspectj weaver-->
    <dependency>
        <groupId>org.aspectj</groupId>
        <artifactId>aspectjweaver</artifactId>
        <version>1.9.6</version>
    </dependency>
    <!--log4j-->
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.17</version>
    </dependency>

</dependencies>

<!--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>

1.1.3 创建项目目录

src/main/java下创建
- com.dz.pojo
- com.dz.dao
- com.dz.service
- com.dz.controller
src/main/resources下创建
- jdbc.properties (数据库连接配置文件)
- log4j.properties (日志配置文件)
- mybatis-config.xml (MyBatis配置文件)
- applicationContext.xml (Spring配置文件,总)
- spring-dao.xml (Spring配置文件,子)
- spring-service.xml (Spring配置文件,子)
- spring-mvc.xml (Spring配置文件,子)
src/main/webapp/WEB-INF下
- 新建jsp目录, 里面存放.jsp文件
- 已有的web.xml也要进行配置

2.1 配置文件

2.1.1 jdbc.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mybatis_db?useUnicode=true&useSSL=false&characterEncoding=UTF-8
jdbc.username=root
jdbc.password=8031

2.1.2 log4j.properties

# Global logging configuration
log4j.rootLogger=DEBUG, stdout
# MyBatis logging configuration
log4j.logger.org.mybatis.example.BlogMapper=TRACE
# 配置stdout输出到控制台
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
# 配置stdout设置为自定义布局模式
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
# 配置stdout日志的输出格式  2021-05-01 23:45:26,166  %p日志的优先级 %t线程名  %m日志 %n换行
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} - %5p [%t] - %m%n

2.1.3 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>
    <!--日志-->
	<!--<settings>
        <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>-->

    <!--实体类别名-->
    <typeAliases>
        <package name="com.dz.pojo"/>
    </typeAliases>

</configuration>

2.1.4 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"
       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">

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

</beans>

2.1.5 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:jdbc.properties"/>

    <!--2. 连接池
        dbcp: 半自动化操作, 不能自动连接
        c3p0: 自动化操作(自动化的加载配置文件, 并且可以自动设置到对象中)
        druid
        hikari
    -->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="driverClassName" value="${jdbc.driver}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" 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"/>
        <!--绑定MyBatis的配置文件-->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>

    <!--4. 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dao包-->
        <property name="basePackage" value="com.dz.dao"/>
    </bean>
</beans>

2.1.6 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"
       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/aop
       https://www.springframework.org/schema/aop/spring-aop.xsd
       http://www.springframework.org/schema/tx
       https://www.springframework.org/schema/tx/spring-tx.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.dz.service"/>
    <!--2. 将我们所有的业务类,注入到Spring, 可以通过配置,或者注解实现-->
    <bean id="bookServiceImpl" class="com.dz.service.BookServiceImpl">
        <property name="bookMapper" ref="bookMapper"/>
    </bean>

    <!--3. 声明式事务管理-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!--注入数据源-->
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!--支持注解驱动,让@Transaction事务注解生效-->
    <tx:annotation-driven/>

    <!--4. aop事务支持-->
    <!--配置事务通知-->
    <tx:advice id="txManager" transaction-manager="transactionManager">
        <!--事务属性 给哪些方法配置事务-->
        <!--配置事务的传播特性 propagation-->
        <tx:attributes>
            <!--REQUIRED 默认创建一个新的事务-->
            <tx:method name="*" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>
    <!--配置事务切入-->
    <aop:config>
        <aop:pointcut id="txPointCut" expression="execution(* com.dz.dao.*.*(..))"/>
        <aop:advisor advice-ref="txManager" pointcut-ref="txPointCut"/>
    </aop:config>

</beans>

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

    <!--1. 注册驱动-->
    <mvc:annotation-driven/>
    <!--2. 静态资源过滤-->
    <mvc:default-servlet-handler/>
    <!--3. 扫描包: controller-->
    <content:component-scan base-package="com.dz.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>

2.1.8 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>
        <!--启动级别: 1-->
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <!--/: 匹配所有请求(不包括.jsp) /*: 匹配所有请求-->
        <servlet-name>springmvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!--乱码过滤-->
    <filter>
        <filter-name>encoding</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>encoding</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

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

3.1 项目代码

3.1.1 Books.java

package com.dz.pojo;

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

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Books {

    private int bookID;
    private String bookName;
    private int bookCounts;
    private String detail;
}

3.1.2 BookMapper.java

package com.dz.dao;

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

import java.util.List;

public interface BookMapper {

    //增加一本书
    int addBook(Books books);

    //删除一本书
    int deleteBook(@Param("bookID") int id);

    //更新一本书
    int updateBook(Books books);

    //查询一本书
    Books queryBookById(@Param("bookID") int id);

    //根据书名查书
    List<Books> queryBookByName(@Param("bookName") String bookName);

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

3.1.3 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">
<mapper namespace="com.dz.dao.BookMapper">

    <sql id="query_sql">
        select bookID,bookName,bookCounts,detail
        from ssmbuild.books
    </sql>

    <insert id="addBook" parameterType="Books">
        insert into ssmbuild.books (bookName, bookCounts, detail)
        values (#{bookName},#{bookCounts},#{detail})
    </insert>
    <update id="updateBook" parameterType="Books">
        update ssmbuild.books
        set bookName=#{bookName},bookCounts=#{bookCounts},detail=#{detail}
        where bookID=#{bookID}
    </update>
    <delete id="deleteBook" parameterType="int">
        delete from ssmbuild.books
        where bookID=#{bookID}
    </delete>

    <select id="queryBookById" resultType="Books">
        <include refid="query_sql"/>
        where bookID=#{bookID}
    </select>
    <select id="queryBookByName" resultType="Books">
        <include refid="query_sql"/>
        where bookName like concat('%',#{bookName},'%')
    </select>
    <select id="queryAllBook" resultType="Books">
        <include refid="query_sql"/>
    </select>

</mapper>

3.1.4 BookService.java

package com.dz.service;

import com.dz.pojo.Books;

import java.util.List;

public interface BookService {
    //增加一本书
    int addBook(Books books);

    //删除一本书
    int deleteBook(int id);

    //更新一本书
    int updateBook(Books books);

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

    //根据书名查书(模糊查询,可能有多本)
    List<Books> queryBookByName(String bookName);

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

3.1.5 BookServiceImpl.java

package com.dz.service;

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

import java.util.List;

public class BookServiceImpl implements BookService{
    //service层调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 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> queryBookByName(String bookName) {
        return bookMapper.queryBookByName(bookName);
    }

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

3.1.6 BookController.java

package com.dz.controller;

import com.dz.pojo.Books;
import com.dz.service.BookService;
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 javax.annotation.Resource;
import java.util.List;

@Controller
@RequestMapping("/book")
public class BookController {
    //controller层调service层
    /*@Autowired
    @Qualifier("BookServiceImpl")*/
    @Resource(name = "bookServiceImpl")
    private BookService bookService;

    //查询全部的书籍, 并且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";
    }

    //跳转到新增书籍页面
    @RequestMapping("/toAddBook")
    public String toAddPaper() {
        return "addBook";
    }

    //添加书籍的请求
    @RequestMapping("/addBook")
    public String addBook(Books books) {
        bookService.addBook(books);
        //重定向到我们的@RequestMapping("/allBook")请求
        return "redirect:/book/allBook";
    }

    //跳转到修改页面
    @RequestMapping("/toUpdateBook")
    public String toUpdatePaper(int id, Model model) {
        Books book = bookService.queryBookById(id);
        model.addAttribute("book",book);
        return "updateBook";
    }

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

    //修改书籍
    @RequestMapping("/updateBook")
    public String updateBook(Books books) {
        bookService.updateBook(books);
        return "redirect:/book/allBook";
    }

    //搜索框查询书籍
    @RequestMapping("/queryBook")
    public String queryBook(String queryBookName, Model model) {
        List<Books> list = bookService.queryBookByName(queryBookName);
        model.addAttribute("list",list);
        return "allBook";
    }

}

3.1.7 allBook.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

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

    <%--BootStrap--%>
    <link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/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 class="col-md-4 column">
            <%--toAddBook--%>
            <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">新增书籍</a>
        </div>
        <div class="col-md-8 column">
            <%--搜索框查询书籍--%>
            <form class="form-inline" action="${pageContext.request.contextPath}/book/queryBook" style="float: right" method="post">
                <div class="form-group">
                    <label class="sr-only" for="queryBN">Query BookName</label>
                    <input type="text" class="form-control" id="queryBN" name="queryBookName" placeholder="请输入要查询的书籍名称">
                </div>
                <button type="submit" class="btn btn-primary">查询</button>
            </form>
        </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>书籍名称</th>
                        <th>书籍数量</th>
                        <th>书籍详情</th>
                        <th>操作</th>
                    </tr>
                </thead>

                <%--书籍从数据库中拿出来, 从这个list中遍历出来: foreach--%>
                <tbody>
                    <c:forEach var="book" items="${list}">
                        <tr>
                            <td>${book.bookID}</td>
                            <td>${book.bookName}</td>
                            <td>${book.bookCounts}</td>
                            <td>${book.detail}</td>
                            <td>
                                <a href="${pageContext.request.contextPath}/book/toUpdateBook?id=${book.bookID}">修改</a>
                                &nbsp; | &nbsp;
                                <a href="${pageContext.request.contextPath}/book/deleteBook/${book.bookID}">删除</a>
                            </td>
                        </tr>
                    </c:forEach>
                </tbody>
            </table>
        </div>
    </div>
</div>

</body>
</html>

3.1.8 addBook.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>新增书籍</title>
    <%--BootStrap--%>
    <link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/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="${pageContext.request.contextPath}/book/addBook" method="post">
        <div class="form-group">
            <label for="bkName">书籍名称: </label>
            <input type="text" class="form-control" id="bkName" name="bookName" placeholder="请填写书籍名称" required>
        </div>
        <div class="form-group">
            <label for="bkCounts">书籍数量: </label>
            <input type="text" class="form-control" id="bkCounts" name="bookCounts" placeholder="请填写书籍数量" required>
        </div>
        <div class="form-group">
            <label for="bkDetail">书籍详情: </label>
            <input type="text" class="form-control" id="bkDetail" name="detail" placeholder="请填写书籍详情" required>
        </div>
        <div class="form-group">
            <input class="btn btn-primary" type="submit" value="提交">
        </div>
    </form>
</div>

</body>
</html>

3.1.9 updateBook.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>修改书籍</title>
    <%--BootStrap--%>
    <link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/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>修改书籍</small>
                </h1>
            </div>
        </div>
    </div>

    <form action="${pageContext.request.contextPath}/book/updateBook" method="post">
        <div class="form-group">
            <%--隐藏域--%>
            <input type="hidden" name="bookID" value="${book.bookID}">
        </div>
        <div class="form-group">
            <label for="bkName">书籍名称: </label>
            <input type="text" class="form-control" id="bkName" name="bookName" value="${book.bookName}" required>
        </div>
        <div class="form-group">
            <label for="bkCounts">书籍数量: </label>
            <input type="text" class="form-control" id="bkCounts" name="bookCounts" value="${book.bookCounts}" required>
        </div>
        <div class="form-group">
            <label for="bkDetail">书籍详情: </label>
            <input type="text" class="form-control" id="bkDetail" name="detail" value="${book.detail}" required>
        </div>
        <div class="form-group">
            <input class="btn btn-primary" type="submit" value="提交">
        </div>
    </form>
</div>

</body>
</html>

3.1.10 index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
  <title>$Title$</title>
  <style>
    a{
      text-decoration: none;
      color: black;
      font-size: 18px;
    }
    h3 {
       180px;
      height: 38px;
      margin: 100px auto;
      text-align: center;
      line-height: 38px;
      background: sienna;
      border-radius: 5px;
    }
  </style>
</head>
<body>
<h3>
  <a href="${pageContext.request.contextPath}/book/allBook">进入书籍页面</a>
</h3>
</body>
</html>