[SpringMVC 04] SSM图书管理系统整合

SSM_整合

1. 背景搭建

1.1 数据库：

books（bookID， bookName， bookCounts， detail）, bookID是自增的

CREATE DATABASE `ssmbuild`;

USE `ssmbuild`;

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=utf8;

INSERT 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');

1.2.项目配置

新建和Mybatis层的配置，包括pojo、dao、service

1.2.1配置pom.xml

新建maven普通项目，配置pom.xml文件（导入依赖、静态资源导出问题配置）

<!--依赖： junit,
数据库驱动，连接池，
 servlet，jsp，jstl
 mybatis， mybatis-spring， spring-->
    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.35</version>
        </dependency>
        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.5.2</version>
        </dependency>
        <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>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.6</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.6</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.2.12.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.3.13</version>
        </dependency>
    </dependencies>
<!--    静态资源导出-->
    <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>

1.2.2 测试连接数据库

更换数据库：在schema中

1.2.3 构建包结构

java:com.roy.pojo, dao, service, controller

resources: 数据库连接信息：database.properties 连接数据库： mybatis-config.xml , spring托管： applicationContext.xml,

database.properties

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

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>
    <!--只做typealias和部分映射-->
    <typeAliases>
        <package name="com.roy.pojo"/>
    </typeAliases>
</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>

1.2.4 Java构建

Pojo层：

pojo.Books

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

dao层：

dao.BooksMapper

public interface BookMapper {
    //add, delete, update, query
    int addBook(Books books);
    int deleteBookById(@Param("bookId")int id);//可以取别名
    int updateBook(Books books);
    Books queryBookById(@Param("bookId")int id);//写param后，在xml中不需要写paramType， alt+/可以自动补充
    List<Books> queryAllBook();
}

dao层接口的实现xml：

(不出现提示信息的方法：在settings-->Languages &Frameworks-->SQL Dialects中配置数据库类型，将项目添加进来，配置完成后Apply-OK)

dao.BooksMapper.xml

<?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.roy.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 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" parameterType="int" resultType="Books">
        select * from books where bookID=#{bookID}
    </select>
    <select id="queryAllBook" resultType="Books">
        select * from books
    </select>
</mapper>

写完去mybatis-config.xml注册

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

Service层

需要调用dao层写好的Mapper，使用组合思想，并写set方法，方便spring注入

BookService接口

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

BookServiceImpl

public class BookServiceImpl implements BookService{
    private BookMapper bookMapper;
    public void setBookMapper(BookMapper bookMapper) {//重点，组合思想
        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();
    }
}

1.3. Spring整合

1.3.1 把mybatis整合到Spring中

（同时把dao层整合到spring中，配置第四点）

写spring-dao.xml, 其中：关联数据库、写连接池、获得sqlSessionFactory

<?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">
<!--    11取数据库配置文件-->
    <context:property-placeholder location="classpath:database.properties"/>
<!--    22配置连接池-->
    <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}"/>

        <!-- 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"/>
        <property name="initialPoolSize" value="10"/>
    </bean>
<!--    33sqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>
<!--    44添加自动扫描BookMapper.xml文件注入到Spring中托管
（以前需要在dao层重新写.java实现类并继承SqlSessionFactory或DaoSupport-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--        此处为引用上面的sqlSessionFactory, 但不是ref，是string类型，所以用value-->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!--        添加要扫描的包-->
        <property name="basePackage" value="com.roy.dao"/>
    </bean>
</beans>

(之前的dao层的Mapper.xml不能被托管到sping中，需要手动写一个Mapper.java的实现类，现在用动态扫描)

1.3.2 整合service层

新建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">
<!--11扫描service包-->
    <context:component-scan base-package="com.roy.service"/>
<!--22将所有业务类，注入spring（配置或注解）
注解： 添加@Service, 要注入的属性上写@AutoWired（属性必须有set方法，否则不能注入-->
    <bean id="BookServiceImpl" class="com.roy.service.BookServiceImpl">
        <property name="bookMapper" ref="bookMapper"/>
    </bean>
<!--33    声明式事务配置（所有的增删改查都需要式事务的）-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
<!--44    aop织入其他切面，需要导入包-->
</beans>

1.3.3 整合SpringMVC

1.给项目添加web支持，然后修改web.xml文件

2.web.xml:(三件事情： DispatcherServlet，乱码过滤， session过期时间)

<?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>
            <param-value>classpath:applicationContext.xml</param-value>
            <!--    注意添加的是总的配置，applicationContext，不是mvc的配置-->
        </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>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过期时间-->
    <session-config>
        <session-timeout>15</session-timeout>
    </session-config>
</web-app>

写spring-mvc.xml配置：

<?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
       https://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
    <!--注解驱动、静态资源过滤、扫描包、配置视图解析-->
    <mvc:annotation-driven/>
    <mvc:default-servlet-handler/>
    <context:component-scan base-package="com.roy.controller"/>
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
</beans>

在applicationContext.xml中添加：

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

WEB-INF下添加jsp文件夹

整合完成，开始写Controller和jsp文件夹下的前端展示

1.4 Controller和jsp前端

1.4.1 简单测试

写controller.BookController.java做测试：

@Controller
@RequestMapping("/book")
public class BookController {
    @Autowired//写这个注解，可以不用写set方法就可以自动注入（详见之前的笔记）
    @Qualifier(value = "BookServiceImpl")
    private BookServiceImpl bookServiceImpl;
    @RequestMapping("/allbook")
    public String list(Model model){
        List<Books> books = bookServiceImpl.queryAllBook();
        model.addAttribute("books", books);
        return "allBook";
    }
}

index.jsp:

<a href="${pageContext.request.contextPath}/book/allbook">跳转到全部书籍页面</a>

jsp/allBook.jsp:

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
过来了过来了
</body>
</html>

1.4.2 美化index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
    <title>书项目首页</title>
    <style>
        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;
            }
        
      </style>
  </head>
  <body>
  <h3>
    <a href="${pageContext.request.contextPath}/book/allbook">跳转到全部书籍页面</a>
      <%--跳转到  /book/allbook--%>
  </h3>
  </body>
</html>

1.4.3 allBook.jsp

需要加入依赖：

<dependency>
    <groupId>taglibs</groupId>
    <artifactId>standard</artifactId>
    <version>1.1.2</version>
</dependency>

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<html>
<head>
    <title>Title</title>
    <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="row">
            <div class="col-md-4 column">
                <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">新增书籍</a>
            </div>
        </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>
                <tbody>
                <%--                    从list中遍历--%>
                <c:forEach var="book" items="${books}">
                    <tr>
                        <td>${book.bookID}</td>
                        <td>${book.bookName}</td>
                        <td>${book.bookCounts}</td>
                        <td>${book.detail}</td>
                        <td>
                            <a href="${pageContext.request.contextPath}/book/toUpdate?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>

1.4.4 addBook.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
    <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" name="bookName" class="form-control" id="bkname" required>
        </div>
        <div class="form-group">
            <label>书籍数量：</label>
            <input type="text" name="bookCounts" class="form-control" required>
        </div>
        <div class="form-group">
            <label>书籍描述：</label>
            <input type="text" name="detail" class="form-control" required>
        </div>
        <div class="form-group">
            <input type="submit" class="form-control" value="添加">
        </div>
    </form>
</div>
</body>
</html>

1.4.5 updateBook.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
    <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="${pageContext.request.contextPath}/book/updateBook" method="post">
<%--        缺少id号， 提交的update无法update(修改失败）--%>
        <input type="hidden" name="bookID" value="${Qbooks.bookID}">
        <div class="form-group">
            <label for="bkname">书籍名称：</label>
            <input type="text" name="bookName" class="form-control" id="bkname" value="${Qbooks.bookName}" required>
        </div>
        <div class="form-group">
            <label>书籍数量：</label>
            <input type="text" name="bookCounts" class="form-control" value="${Qbooks.bookCounts}" required>
        </div>
        <div class="form-group">
            <label>书籍描述：</label>
            <input type="text" name="detail" class="form-control" value="${Qbooks.detail}" required>
        </div>
        <div class="form-group">
            <input type="submit" class="form-control" value="修改">
        </div>
    </form>


</div>
</body>
</html>

1.4.6 BookController.java

@Controller
@RequestMapping("/book")
public class BookController {
    @Autowired
    @Qualifier(value = "BookServiceImpl")
    private BookServiceImpl bookServiceImpl;
    //全部书籍展示
    @RequestMapping("/allbook")
    public String list(Model model){
        List<Books> books = bookServiceImpl.queryAllBook();
        model.addAttribute("books", books);
        return "allBook";
    }
    //添加书籍跳转
    @RequestMapping("/toAddBook")
    public String toAddPaper(){
        return "addBook";
    }
    //添加书籍提交
    @RequestMapping("/addBook")
    public String addBook(Books books){
        System.out.println("addBook->"+books);
        bookServiceImpl.addBook(books);
        return "redirect:/book/allbook";
    }
    //更新书籍跳转
    @RequestMapping("/toUpdate")
    public String toUpdatePaper(int id, Model model){
        Books books = bookServiceImpl.queryBookById(id);
        model.addAttribute("Qbooks", books);
        return "updateBook";
    }
    //更新书籍提交
    @RequestMapping("/updateBook")
    public String updateBook(Books books){
        bookServiceImpl.updateBook(books);
        return "redirect:/book/allbook";
    }
    //删除书籍，Restful风格
    @RequestMapping("/deleteBook/{bookId}")
    public String deleteBook(@PathVariable("bookId") int id){
        bookServiceImpl.deleteBookById(id);
        return "redirect:/book/allbook";
    }
}

1.5 SSM项目配置思路总结：

1.5.1 项目建立

数据库建立
新建项目，配置pom.xml:maven依赖，资源过滤关闭
构建基础包结构： pojo, dao, service, controller
resources添加： database.properties（连接数据库）, mybatis-config.xml（空）, applicationContext.xml（空）
写完dao的Mapper.xml后，去mybatis-config.xml映射
写service层，组合的方式调用dao层

1.5.2 项目整合：

mybatis（整合到spring中）：spring-dao.xml：配置dataSource，连接池， sqlSessionFactory, 使用MapperScanner把Mapper.xml类扫描到Spring中，不用新建.java文件
service层整合： spring-service.xml: 扫描service的包，把dao注入到service层中，声明事务，和AOP织入
MVC层整合1： web.xml : 配置DispatcherService, 配置乱码过滤，配置session过期时间
MVC层整合2：spring-mvc.xml: 配置注解驱动，静态资源过滤，扫描包，视图解析器
在application.xml中整合spring*.xml文件进去，并将application配置到web.xml的DispatcherService中。

（controller层被spring-mvc扫描到而被spring托管）

posted @ 2022-01-11 15:00 Roy2048 阅读(193) 评论(0) 编辑收藏举报

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