SpingMVC学习总结二（整合SSM框架！配置地狱！开始实际业务，实现增删改查、前后端结合）

2023-11-24 07:56:58

文章目录

一、SSM框架整合之Mybatis

创建项目

配置pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.ola</groupId>
    <artifactId>ssm-build</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.13.1</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.22</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.mchange/c3p0 -->
        <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>taglibs</groupId>
            <artifactId>standard</artifactId>
            <version>1.1.2</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.3</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.3</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.2.4.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.2.4.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.16</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.9.5</version>
        </dependency>
    </dependencies>
    <build>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
            </resource>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
            </resource>
        </resources>
    </build>
</project>

在java根目录创建包pojo、dao、service、controller

在resources根目录创建applicationContext.xml、mybatis-config.xml、database.properties

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

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>
    <settings>
        <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>
    <typeAliases>
        <package name="com.ola.pojo"/>
    </typeAliases>
    <mappers>
        <mapper class="com.ola.dao.BookMapper"/>
    </mappers>
</configuration>

database.properties

jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf8&serverTimezone=Asia/Shanghai
jdbc.username=root
jdbc.password=niushijian

在dao中创建接口BookMapper

package com.ola.dao;

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

import java.util.List;

/**
 * ClassName:BookMapper Package:com.ola.dao
 *
 * @author morningj
 * @date 2021/1/16 10:36
 */
public interface BookMapper {
  int addBook(Books books);

  int deleteBookById(@Param("bid") int id);

  int updateBook(Books books);

  Books queryBookById(@Param("bid") int id);

  List<Books> queryAllBooks();

  Books queryBookByName(@Param("name") String name);
}

在dao中创建BookMapper.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.ola.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 = #{bid}
    </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 = #{bid}
    </select>
    <select id="queryAllBooks" resultType="Books">
        select *
        from ssmbuild.books;
    </select>
    <select id="queryBookByName" resultType="Books">
        select *
        from ssmbuild.books
        where bookName = #{name}
    </select>
</mapper>

在mybatis-config.xml中绑定mapper

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

在service中创建BookService接口（拷贝dao层的接口）

在service中创建接口实现类BookServiceImpl

package com.ola.service;

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

import java.util.List;

/**
 * ClassName:BookServiceImpl Package:com.ola.service
 *
 * @author morningj
 * @date 2021/1/16 10:53
 */
public class BookServiceImpl implements BookService {
  // service层调用dao层
  // 组合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 deleteBookById(int id) {
    return bookMapper.deleteBookById(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> queryAllBooks() {
    return bookMapper.queryAllBooks();
  }

  @Override
  public Books queryBookByName(String name) {
    return bookMapper.queryBookByName(name);
  }
}

二、SSM框架整合之Spring

整合dao层，在resources根目录创建spring-dao.xml（关联数据库配置文件、连接池、SqlSessionFactory、dao接口扫描包）

<?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">

    <!--关联数据库配置文件-->
    <context:property-placeholder location="classpath:database.properties"/>
    <!--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"/>
        <property name="autoCommitOnClose" value="false"/>
        <property name="checkoutTimeout" value="10000"/>
        <property name="acquireRetryAttempts" value="2"/>
    </bean>
    <!--SQLSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>
    <!--配置dao接口扫描包,动态实现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"/>
        <!--    扫描dao包    -->
        <property name="basePackage" value="com.ola.dao"/>
    </bean>
</beans>

整合service层，在resources根目录创建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"
       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
               https://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">
    <!--  扫描service下的包  -->
    <context:component-scan base-package="com.ola.service"/>
    <!--  将所有的业务类注入到Spring中,可以通过配置或者注解实现  -->
    <bean id="BookServiceImpl" class="com.ola.service.BookServiceImpl">
        <property name="bookMapper" ref="bookMapper"/>
    </bean>
    <!--  声明式事务  -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!--    注入数据源    -->
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!--  AOP事务支持  -->
    <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.ola.dao.*.*(..))"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointCut"/>
    </aop:config>
</beans>

三、SSM框架整合之SpringMVC

给项目添加web框架支持

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">
    <!--  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>
    <!--  乱码过滤  -->
    <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-config>
        <session-timeout>15</session-timeout>
    </session-config>
</web-app>

在resources根目录中创建spring-mvc.xml并配置

<?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: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
        https://www.springframework.org/schema/mvc/spring-mvc.xsd">
    <!-- 使用扫描机制扫描控制器类，控制器类都在controller包及其子包下 -->
    <context:component-scan base-package="com.ola.controller"/>
    <!--  过滤  -->
    <mvc:default-servlet-handler/>
    <!--  配置映射器和适配器驱动  -->
    <mvc:annotation-driven/>
    <!--  配置视图解析器  -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="internalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
</beans>

四、业务开始（增删改查）

创建BookController

package com.ola.controller;

import com.ola.pojo.Books;
import com.ola.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.ArrayList;
import java.util.List;

/**
 * ClassName:BookController Package:com.ola.controller
 *
 * @author morningj
 * @date 2021/1/16 11:34
 */
@Controller
@RequestMapping("/book")
public class BookController {
  @Autowired
  @Qualifier("BookServiceImpl")
  private BookService bookService;

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

  @RequestMapping("/toAddBook")
  public String toAddPaper(Books books, Model model) {
    return "addBook";
  }

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

  @RequestMapping("/toUpdate")
  public String toUpdatePaper(int id, Model model) {
    Books books = bookService.queryBookById(id);
    model.addAttribute("books", books);
    return "updateBook";
  }

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

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

  @RequestMapping("/queryBook")
  public String queryBook(String queryBookName, Model model) {
    Books books2 = bookService.queryBookByName(queryBookName);

    List<Books> books = new ArrayList<>();
    books.add(books2);
    if (books2 == null) {
      books = bookService.queryAllBooks();
    }

    model.addAttribute("books", books);
    return "allBook";
  }
}

前端代码

index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
    <!-- jQuery文件。务必在bootstrap.min.js 之前引入 -->
    <script src="https://cdn.staticfile.org/jquery/2.1.1/jquery.min.js"></script>
    <!-- 最新的 Bootstrap 核心 JavaScript 文件 -->
    <script src="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
    <title>首页</title>
    <style>
        button {
            height: 260px;
            width: 180px;
            align-content: center;
        }
    </style>
</head>
<body>
<h3>
    <a href="${pageContext.request.contextPath}/book/allBook">
        <button class="btn btn-primary">查看全部书籍
        </button>
    </a>
</h3>
</body>
</html>

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>

    <!-- 新 Bootstrap 核心 CSS 文件 -->
    <link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
    <!-- jQuery文件。务必在bootstrap.min.js 之前引入 -->
    <script src="https://cdn.staticfile.org/jquery/2.1.1/jquery.min.js"></script>
    <!-- 最新的 Bootstrap 核心 JavaScript 文件 -->
    <script src="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
</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="${pageContext.request.contextPath}/book/toAddBook">新增书籍</a>
                <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/allbook">显示全部书籍</a>
            </div>
            <div class="col-md-4 column"></div>
            <div class="col-md-4 column">
                <form action="${pageContext.request.contextPath}/book/queryBook" method="post" class="form-inline">
                    <input type="text" class="form-control" name="queryBookName" placeholder="请输入要查询的书籍名称!"
                           style="width: 280px">
                    <input type="submit" class="btn btn-primary" value="查询">
                </form>
            </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>
                <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?id=${book.bookID}">删除</a>
                        </td>
                    </tr>
                </c:forEach>
                </tbody>
            </table>
        </div>
    </div>
</div>
</body>
</html>

addBook.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>增加书籍</title>
    <!-- 新 Bootstrap 核心 CSS 文件 -->
    <link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
    <!-- jQuery文件。务必在bootstrap.min.js 之前引入 -->
    <script src="https://cdn.staticfile.org/jquery/2.1.1/jquery.min.js"></script>
    <!-- 最新的 Bootstrap 核心 JavaScript 文件 -->
    <script src="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
</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="bkid">书籍编号:</label>--%>
        <%--            <input type="text" name="bookID" class="form-control" id="bkid" required>--%>
        <%--        </div>--%>
        <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 for="bkcounts">书籍数量:</label>
            <input type="text" name="bookCounts" class="form-control" id="bkcounts" required>
        </div>
        <div class="form-group">
            <label for="bkdetail">书籍详情:</label>
            <input type="text" name="detail" class="form-control" id="bkdetail" required>
        </div>
        <div class="form-group">
            <input type="submit" class="form-control" value="添加">
        </div>
    </form>
</div>
</body>
</html>

uodateBook.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>修改书籍</title>
    <!-- 新 Bootstrap 核心 CSS 文件 -->
    <link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
    <!-- jQuery文件。务必在bootstrap.min.js 之前引入 -->
    <script src="https://cdn.staticfile.org/jquery/2.1.1/jquery.min.js"></script>
    <!-- 最新的 Bootstrap 核心 JavaScript 文件 -->
    <script src="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
</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="${pageContext.request.contextPath}/book/updateBook" method="post">
        <div class="form-group">
            <label for="bkid">书籍编号:</label>
            <input type="text" name="bookID" class="form-control" id="bkid" value="${books.bookID}" readonly>
        </div>
        <%--        <input type="hidden" name="bookID" value="${books.bookID}">--%>
        <div class="form-group">
            <label for="bkname">书籍名称:</label>
            <input type="text" name="bookName" class="form-control" id="bkname" value="${books.bookName}" required>
        </div>
        <div class="form-group">
            <label for="bkcounts">书籍数量:</label>
            <input type="text" name="bookCounts" class="form-control" id="bkcounts" value="${books.bookCounts}"
                   required>
        </div>
        <div class="form-group">
            <label for="bkdetail">书籍详情:</label>
            <input type="text" name="detail" class="form-control" id="bkdetail" value="${books.detail}" required>
        </div>
        <div class="form-group">
            <input type="submit" class="form-control" value="修改">
        </div>
    </form>
</div>
</body>
</html>

码农公寓

文章目录

一、SSM框架整合之Mybatis

二、SSM框架整合之Spring

三、SSM框架整合之SpringMVC

四、业务开始（增删改查）

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