110_SSM框架

2021 年 9 月 12 日
筆記
120_SpringMVC

需求分析->功能設計->資料庫設計

環境要求

環境

IDEA
MySQL 5.7.19
Tomcat 9
Maven 3.6

要求

熟練掌握MySQL資料庫
熟練掌握Spring，JavaWeb及MyBatis知識
簡單的前端知識

資料庫環境

CREATE DATABASE `ssm`CHARACTER SET utf8 COLLATE utf8_general_ci; 

USE `ssm`; 
 
CREATE TABLE `ssm`.`books` ( `book_id` INT(10) NOT NULL AUTO_INCREMENT COMMENT '書id', `book_name` VARCHAR(100) NOT NULL COMMENT '書名', `book_count` INT(10) NOT NULL COMMENT '數量', `book_detail` VARCHAR(1000) NOT NULL COMMENT '描述', PRIMARY KEY (`book_id`) ) ENGINE=INNODB CHARSET=utf8 COLLATE=utf8_general_ci; 

INSERT INTO `ssm`.`books` (`book_name`, `book_count`, `book_detail`) VALUES ('Java', '1', '從入門到放棄'); 
INSERT INTO `ssm`.`books` (`book_name`, `book_count`, `book_detail`) VALUES ('MySQL', '11', '從刪庫到跑路'); 
INSERT INTO `ssm`.`books` (`book_name`, `book_count`, `book_detail`) VALUES ('Linux', '5', 'j'); 

SELECT * FROM books LIMIT 0, 1000;

基本環境搭建

創建maven項目

pom.xml添加依賴，添加資源導出

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

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

    <dependencies>
        <!-- //mvnrepository.com/artifact/junit/junit -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.13.2</version>
        </dependency>
        <!-- //mvnrepository.com/artifact/org.projectlombok/lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.20</version>
        </dependency>
        <!-- //mvnrepository.com/artifact/mysql/mysql-connector-java -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.49</version>
        </dependency>
        <!-- //mvnrepository.com/artifact/com.mchange/c3p0 -->
        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.5.5</version>
        </dependency>
        <!-- //mvnrepository.com/artifact/javax.servlet/servlet-api -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
        </dependency>
        <!-- //mvnrepository.com/artifact/javax.servlet.jsp/jsp-api -->
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.2</version>
        </dependency>
        <!-- //mvnrepository.com/artifact/javax.servlet/jstl -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <!-- //mvnrepository.com/artifact/org.mybatis/mybatis -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.7</version>
        </dependency>
        <!-- //mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.6</version>
        </dependency>
        <!-- //mvnrepository.com/artifact/org.springframework/spring-webmvc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.3.9</version>
        </dependency>
        <!-- //mvnrepository.com/artifact/org.springframework/spring-jdbc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.3.9</version>
        </dependency>
        <!-- //mvnrepository.com/artifact/org.aspectj/aspectjweaver -->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.9.7</version>
            <scope>runtime</scope>
        </dependency>

    </dependencies>

    <!--配置resources，防止資源導出失敗問題-->
    <build>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>true</filtering>
            </resource>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>true</filtering>
            </resource>
        </resources>
    </build>
</project>

idea連接資料庫

提交項目到Git

[email protected]:wl3pbzhyq/ssm.git

創建基礎包

創建配置文件

db.properties

driver=com.mysql.jdbc.Driver
# 如果使用的是MySQL8.0+，增加一個時區的配置：&serverTimezone=Asia/Shanghai
url=jdbc:mysql://localhost:3306/mybatis?useSSL=false&useUnicode=true&characterEncoding=UTF-8
username=root
password=123456

mybatis-config.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "//mybatis.org/dtd/mybatis-3-config.dtd">

<!--核心配置文件-->
<configuration>
    <settings>
        <setting name="logImpl" value="STDOUT_LOGGING"/>
        <!--開啟駝峰映射-->
        <setting name="mapUnderscoreToCamelCase" value="true"/>
    </settings>

    <!--別名-->
    <typeAliases>
        <package name="com.qing.pojo"/>
    </typeAliases>

</configuration>

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="//www.springframework.org/schema/beans"
       xmlns:xsi="//www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="//www.springframework.org/schema/beans
        //www.springframework.org/schema/beans/spring-beans.xsd">



</beans>

創建實體類

package com.qing.pojo;

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

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Books {
    private int bookId;
    private String bookName;
    private int bookCount;
    private String bookDetail;
}

創建Mapper介面和Mapper.xml

package com.qing.dao;

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

import java.util.List;

public interface BooksMapper {

    /**
     * 新增書
     * @param books
     * @return
     */
    int add(Books books);

    /**
     * 根據Id刪除書
     * @param bookId
     * @return
     */
    int deleteById(@Param("bookId") int bookId);

    /**
     * 修改書
     * @param books
     * @return
     */
    int update(Books books);

    /**
     * 根據Id獲取書
     * @param bookId
     * @return
     */
    Books getBooksById(@Param("bookId") int bookId);

    /**
     * 獲取全部書
     * @return
     */
    List<Books> listBooks();
}

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "//mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.qing.dao.BooksMapper">
    <!--新增書-->
    <insert id="add" parameterType="Books">
        insert into ssm.books(book_name, book_count, book_detail)
        values (#{bookName},#{bookCount},#{bookDetail})
    </insert>
    <!--根據Id刪除書-->
    <delete id="deleteById" parameterType="int">
        delete from ssm.books where book_id = #{bookId}
    </delete>
    <!--修改書-->
    <update id="update" parameterType="Books">
        update ssm.books
        set book_name=#{bookName},book_count=#{bookCount},book_detail=#{bookDetail}
        where book_id=#{bookId}
    </update>
    <!--根據Id獲取書-->
    <select id="getBooksById" parameterType="int" resultType="Books">
        select * from ssm.books
        where book_id=#{bookId}
    </select>
    <!--獲取全部書-->
    <select id="listBooks" resultType="Books">
        select * from ssm.books
    </select>
</mapper>

註冊Mapper到mybatis-config.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "//mybatis.org/dtd/mybatis-3-config.dtd">

<!--核心配置文件-->
<configuration>
    <settings>
        <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>

    <!--別名-->
    <typeAliases>
        <package name="com.qing.pojo"/>
    </typeAliases>

    <!-- 將包內的映射器介面實現全部註冊為映射器 -->
    <mappers>
        <package name="com.qing.dao"/>
    </mappers>

</configuration>

創建Service介面和實現類

package com.qing.service;

import com.qing.pojo.Books;

import java.util.List;

public interface BooksService {
    /**
     * 新增書
     * @param books
     * @return
     */
    int add(Books books);

    /**
     * 根據Id刪除書
     * @param bookId
     * @return
     */
    int deleteById(int bookId);

    /**
     * 修改書
     * @param books
     * @return
     */
    int update(Books books);

    /**
     * 根據Id獲取書
     * @param bookId
     * @return
     */
    Books getBooksById(int bookId);

    /**
     * 獲取全部書
     * @return
     */
    List<Books> listBooks();
}

package com.qing.service;

import com.qing.dao.BooksMapper;
import com.qing.pojo.Books;

import java.util.List;

public class BooksServiceImpl implements BooksService {

    // service調dao層，組合Dao
    private BooksMapper booksMapper;

    public void setBooksMapper(BooksMapper booksMapper) {
        this.booksMapper = booksMapper;
    }

    public int add(Books books) {
        return booksMapper.add(books);
    }

    public int deleteById(int bookId) {
        return booksMapper.deleteById(bookId);
    }

    public int update(Books books) {
        return booksMapper.update(books);
    }

    public Books getBooksById(int bookId) {
        return booksMapper.getBooksById(bookId);
    }

    public List<Books> listBooks() {
        return booksMapper.listBooks();
    }
}

Spring配置文件

創建配置文件 spring-dao.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="//www.springframework.org/schema/beans"
       xmlns:xsi="//www.w3.org/2001/XMLSchema-instance"
       xmlns:context="//www.springframework.org/schema/context"
       xsi:schemaLocation="//www.springframework.org/schema/beans
        //www.springframework.org/schema/beans/spring-beans.xsd //www.springframework.org/schema/context //www.springframework.org/schema/context/spring-context.xsd">

    <!--關聯資料庫配置文件-->
    <context:property-placeholder location="classpath:db.properties"/>

    <!--連接池
        dbcp: 半自動化操作，不能自動連接
        c3p0: 自動化操作，自動化的載入配置文件，並且可以自動設置到對象中
        druid : hikari
    -->
    <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連接池的私有屬性-->
        <property name="maxPoolSize" value="30"/>
        <property name="minPoolSize" value="10"/>
        <!--關閉連接後不自動commit-->
        <property name="autoCommitOnClose" value="false"/>
        <!--獲取連接超時時間-->
        <property name="checkoutTimeout" value="10000"/>
        <!--獲取連接失敗重試次數-->
        <property name="acquireRetryAttempts" value="2"/>
    </bean>

    <!--sqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!--綁定mybatis的配置文件-->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>

    <!--配置dao介面掃描包，動態的實現Dao介面注入到spring容器中-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--注入sqlSessionFactory-->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <!--要掃描的dao包-->
        <property name="basePackage" value="com.qing.dao"/>
    </bean>

</beans>

創建配置文件 spring-service.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="//www.springframework.org/schema/beans"
       xmlns:xsi="//www.w3.org/2001/XMLSchema-instance"
       xmlns:context="//www.springframework.org/schema/context"
       xmlns:tx="//www.springframework.org/schema/tx"
       xmlns:aop="//www.springframework.org/schema/aop"
       xsi:schemaLocation="//www.springframework.org/schema/beans
        //www.springframework.org/schema/beans/spring-beans.xsd
        //www.springframework.org/schema/context
        //www.springframework.org/schema/context/spring-context.xsd
        //www.springframework.org/schema/tx
        //www.springframework.org/schema/tx/spring-tx.xsd
        //www.springframework.org/schema/aop
        //www.springframework.org/schema/aop/spring-aop.xsd">

    <!--掃描service下的包-->
    <context:component-scan base-package="com.qing.service"/>

    <!--將業務類注入到Spring，通過配置，也可以通過註解實現-->
    <bean id="BookServiceImpl" class="com.qing.service.BooksServiceImpl">
        <property name="booksMapper" ref="booksMapper"/>
    </bean>

    <!--聲明式事務配置-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!--注入數據源-->
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!--aop事務支援-->
    <!--結合aop實現事務的織入-->
    <!--配置事務通知-->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <!--給那些方法配置事務-->
        <!--配置事務的傳播特性-->
        <tx:attributes>
            <tx:method name="*" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>

    <!--配置事務切入-->
    <aop:config>
        <aop:pointcut id="txPointCout" expression="execution(* com.qing.dao.*.*(..))"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointCout"/>
    </aop:config>

</beans>

創建配置文件 spring-mvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="//www.springframework.org/schema/beans"
       xmlns:xsi="//www.w3.org/2001/XMLSchema-instance"
       xmlns:mvc="//www.springframework.org/schema/mvc"
       xmlns:context="//www.springframework.org/schema/context"
       xsi:schemaLocation="//www.springframework.org/schema/beans
        //www.springframework.org/schema/beans/spring-beans.xsd
        //www.springframework.org/schema/mvc
        //www.springframework.org/schema/mvc/spring-mvc.xsd
        //www.springframework.org/schema/context
        //www.springframework.org/schema/context/spring-context.xsd">

    <!--註解驅動-->
    <mvc:annotation-driven/>
    <!--靜態資源過濾-->
    <mvc:default-servlet-handler/>
    <!--掃描包-->
    <context:component-scan base-package="com.qing.controller"/>
    <!--視圖解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

</beans>

applicationContext.xml導入spring-dao.xml spring-service.xml spring-mvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="//www.springframework.org/schema/beans"
       xmlns:xsi="//www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="//www.springframework.org/schema/beans
        //www.springframework.org/schema/beans/spring-beans.xsd">

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

</beans>

項目添加web框架支援

配置web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="//xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="//www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="//xmlns.jcp.org/xml/ns/javaee //xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">

    <!--DispatchServlet-->
    <servlet>
        <servlet-name>spingmvc</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>spingmvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    
    <!--亂碼過濾-->
    <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>

創建Controller

package com.qing.controller;

import com.qing.pojo.Books;
import com.qing.service.BooksService;
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.List;

@Controller
@RequestMapping("/books")
public class BooksController {

    @Autowired
    @Qualifier("BookServiceImpl")
    private BooksService booksService;

    @RequestMapping("/listBooks")
    public String listBooks(Model model) {
        List<Books> list = booksService.listBooks();
        model.addAttribute("list",list);
        return "listBooks";
    }
}

創建首頁和書庫頁

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
    <title>首頁</title>
  </head>
  <body>
  <h1><a href="${pageContext.request.contextPath}/books/listBooks">進入書庫</a></h1>
  </body>
</html>

<%@ taglib prefix="c" uri="//java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>書庫</title>
</head>
<body>
<h1>書庫</h1>
<div>
    <table class="table table-hover table-striped">
        <thead>
            <tr>
                <th>書籍編號</th>
                <th>書籍名稱</th>
                <th>書籍數量</th>
                <th>書籍描述</th>
            </tr>
        </thead>
        <tbody>
            <c:forEach var="book" items="${list}">
                <tr>
                    <td>${book.bookId}</td>
                    <td>${book.bookName}</td>
                    <td>${book.bookCount}</td>
                    <td>${book.bookDetail}</td>
                </tr>
            </c:forEach>
        </tbody>
    </table>
</div>
</body>
</html>

Artifacts中WEB-INF下創建lib，並選擇jar

配置Tomcat，並測試

Tags: 120_SpringMVC

110_SSM框架

需求分析->功能設計->資料庫設計

環境要求

環境

要求

資料庫環境

基本環境搭建

創建maven項目

pom.xml添加依賴，添加資源導出

idea連接資料庫

提交項目到Git

創建基礎包

創建配置文件

db.properties

mybatis-config.xml

applicationContext.xml

創建實體類

創建Mapper介面和Mapper.xml

註冊Mapper到mybatis-config.xml

創建Service介面和實現類

Spring配置文件

創建配置文件 spring-dao.xml

創建配置文件 spring-service.xml

創建配置文件 spring-mvc.xml

applicationContext.xml導入spring-dao.xml spring-service.xml spring-mvc.xml

項目添加web框架支援

配置web.xml

創建Controller

創建首頁和書庫頁

Artifacts中WEB-INF下創建lib，並選擇jar

配置Tomcat，並測試

VirMach 便宜 VPS

QNews

110_SSM框架

需求分析->功能設計->資料庫設計

環境要求

環境

要求

資料庫環境

基本環境搭建

創建maven項目

pom.xml添加依賴，添加資源導出

idea連接資料庫

提交項目到Git

創建基礎包

創建配置文件

db.properties

mybatis-config.xml

applicationContext.xml

創建實體類

創建Mapper介面和Mapper.xml

註冊Mapper到mybatis-config.xml

創建Service介面和實現類

Spring配置文件

創建配置文件 spring-dao.xml

創建配置文件 spring-service.xml

創建配置文件 spring-mvc.xml

applicationContext.xml導入spring-dao.xml spring-service.xml spring-mvc.xml

項目添加web框架支援

配置web.xml

創建Controller

創建首頁和書庫頁

Artifacts中WEB-INF下創建lib，並選擇jar

配置Tomcat，並測試

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