基于ssm框架的Java Web

基于ssm框架的Java Web 学生成绩/信息管理系统

环境要求
- IDEA
- MySQL 5.7
- Tomcat9
- Maven 3.6

设计

需求分析 - 设计数据库 - 业务 - 前端页面

数据库

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=utf8;

insert into `books`(`bookID`,`bookName`,`bookCounts`,`detail`) values 
(1,'java',1,'从入门到放弃'),
(2,'mysql',1,'mysql'),
(3,'Linux',1,'Linux大聊')

基本依赖

pom.xml
依赖

<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>com.mchange</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>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.2</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</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>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.20</version>
        </dependency>
    </dependencies>

为避免资源导出问题可以添加以下代码

<!--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>

基本架构和配置框架

com.kuang.pojo
com.kuang.dao
com.kuang.service
com.kuang.controller

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>
</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"
       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">

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

编写MyBatis

数据库配置文件

db.properties

jdbc.driver=com.mysql.cj.jdbc.Driver
# MySQL8.0以上增加一个时区配置
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=false&useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
jdbc.username=root
jdbc.password=123456

核心配置文件

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>
    <!--configuration核心配置文件-->
        <typeAliases>
            <package name="com.saxon.pojo" />
        </typeAliases>
        <mappers>
            <mapper resource="com/saxon/dao/BookMapper.xml"></mapper>
        </mappers>
</configuration>

编写数据库对应的实体类com.kuang.pojo.Books

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Books {
    private int bookID;
    private String bookName;
    private int bookCounts;
    private String detail;
    //get set
    //toString
    //构造方法
}

编写BookMapper 接口

public interface BookMapper {
    //增加一本书
    int addBook(Books books);
    //删除一本书
    int deleteBookForID(@Param("bookID") int id);
    //修改一本书
    int updateBook(Books books);
    //根据书名查找书
    List<Books> selectBookForName(@Param("bookName") String name);
    //查找所有书
    List<Books> selectAllBooks();
    //根据ID查找书
    Books selectBookForID(@Param("bookID") int id);
}

编写BookMapper.xml映射文件

<?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.saxon.dao.BookMapper">
    <insert id="addBook" parameterType="books">
        insert into books (bookName,bookCounts,detail)
        values (#{bookName},#{bookCounts},#{detail});
    </insert>
    <delete id="deleteBookForID" parameterType="int">
        delete from books where bookID=#{bookID};
    </delete>
    <update id="updateBook" parameterType="books">
        update books
        set
            bookName=#{bookName},
            bookCounts=#{bookCounts},
            detail=#{detail}
        where
              bookID=#{bookID};
    </update>
    <select id="selectBookForName" parameterType="String" resultType="books">
        select * from books
        <where>
            <if test="bookName != null and bookName !=''">
                AND bookName like "%"#{ bookName}"%"
            </if>
        </where>
    </select>
    <select id="selectAllBooks" resultType="books">
        select * from books;
    </select>
    <select id="selectBookForID" resultType="books" parameterType="int">
        select
               *
        from
             books
        where
              bookID = #{bookID};
    </select>
</mapper>

编写BookService层

public interface BookService {
    //增加一本书
    int addBook(Books books);
    //删除一本书
    int deleteBookForID(int id);
    //修改一本书
    int updateBook(Books books);
    //根据书名查找一本书
    List<Books> selectBookForName(String name);
    //查找所有书
    List<Books> selectAllBooks();
    //根据书籍ID查找一本书
    Books selectBookForID(int id);
}

BookServiceImpl

public class BookServiceImpl implements BookService{
    //service调dao层，组合dao
    private BookMapper bookMapper;
    public void setBookMapper(BookMapper bookMapper) {
        this.bookMapper = bookMapper;
    }

    @Override
    public int addBook(Books books) {
        return bookMapper.addBook(books);
    }

    @Override
    public int deleteBookForID(int id) {
        return bookMapper.deleteBookForID(id);
    }

    @Override
    public int updateBook(Books books) {
        return bookMapper.updateBook(books);
    }

    @Override
    public List<Books> selectBookForName(String name) {
        return bookMapper.selectBookForName(name);
    }

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

    @Override
    public Books selectBookForID(int id) {
        return bookMapper.selectBookForID(id);
    }
}

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.配置整合mybatis-->
    <context:property-placeholder location="classpath:db.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="com.mchange.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="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 注入数据库连接池 -->
        <property name="dataSource" ref="dataSource"/>
        <!-- 配置MyBaties全局配置文件:mybatis-config.xml -->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </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 ：https://www.cnblogs.com/jpfss/p/7799806.html-->
    <bean id="configurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 注入sqlSessionFactory -->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <!-- 给出需要扫描Dao接口包 -->
        <property name="basePackage" value="com.saxon.dao"/>
    </bean>
</beans>

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
   http://www.springframework.org/schema/context/spring-context.xsd">
    <!-- 扫描service相关的bean -->
    <context:component-scan base-package="com.saxon.service"/>
    <!--BookServiceImpl注入到IOC容器中-->
    <bean id="BookServiceImpl" class="com.saxon.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>

SpringMVC层

一、添加web框架支持
二、web.xml
三、spring-mvc.xml

一、添加web框架支持

二、web.xml

核心控制器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:spring-mvc.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>

过滤乱码

<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有效时间

<session-config>
        <session-timeout>15</session-timeout>
</session-config>

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

controller层

BookController

package com.saxon.controller;
import com.saxon.pojo.Books;
import com.saxon.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 {
    @Autowired
    @Qualifier("BookServiceImpl")
    private BookService bookService;

    @RequestMapping("/allbook")
    public String findAll(Model model) {
        List<Books> allBooks = bookService.selectAllBooks();
        model.addAttribute("list", allBooks);
        return "allBook";
    }
    @RequestMapping("/toAddBook")
    public String toAddPaper() {
        return "add";
    }

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

    @RequestMapping("/toUpdateBook")
    public String toUpatebook(Model model, int id) {
        Books books = bookService.selectBookForID(id);
        model.addAttribute("book", books);
        return "update";
    }

    @RequestMapping("/updateBook")
    public String updateBook(Model model, Books book) {
        System.out.println(book);
        bookService.updateBook(book);
        Books books = bookService.selectBookForID(book.getBookID());
        model.addAttribute("books", book);
        return "redirect:/book/allbook";
    }
    @RequestMapping("/del/{bookID}")
    public String deleteBookById(@PathVariable("bookID") int id) {
        bookService.deleteBookForID(id);
        return "redirect:/book/allbook";
    }
}

posted @ 2021-07-05 15:06 saxon宋阅读(172) 评论(0) 收藏举报

刷新页面返回顶部

saxon宋