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  • 使用Maven整合SSM

    一.  添加依赖

    在整合之前,我们先来看一下,如果不适用Maven,我们应该如何将ssm整合,如果您想查看使用Maven整合SSM,请直接打开本文第五段

    使用Maven整合SSM

    二.  Spring 整合SpringMVC

    1.  Spring配置文件:applicationContext.xml

    • 配置自动扫描组件,不扫描控制层的组件

    2.  SpringMVC的配置文件:spring-mvc.xml

    • 配置自动扫描组件,只扫描控制层的组件

    • 视图解析器

    • 静态资源访问

    3.  web.xml

    • 处理乱码的过滤器:CharacterEncodingFilter

    • 请求分配器:初始化SpringMVC的IOC容器,DispatchServlet

    • 上下文监听:初始化Spring的IOC容器,ContextLoaderListener

    三.  整合Mybatis

    1.  配置mybatis-config.xml

    2.  配置jdbc.properties

    3.  配置log4j.properties

    4.  添加BookMapper.xml

    5.  修改applicationContext.xml

    • 配置DruidDataSource

    • 配置DataSourceTransactionManager

    • 配置开启使用注解配置事务

    • 配置SQLSessionFactoryBean

    • 配置MapperScannerConfigurer

    四.  代码文件

    1.  数据库

    数据库采用的还是 《MyBatis:简单使用》一文中创建的数据库

    2.  Book

    package io.zhangjia.ssm.entity;
    
    public class Book {
        private Integer bookId;
        private String name;
        private String author;
        private Double price;
    
        public Integer getBookId() {
            return bookId;
        }
    
        public void setBookId(Integer bookId) {
            this.bookId = bookId;
        }
    
        public String getName() {
            return name;
        }
    
        public void setName(String name) {
            this.name = name;
        }
    
        public String getAuthor() {
            return author;
        }
    
        public void setAuthor(String author) {
            this.author = author;
        }
    
        public Double getPrice() {
            return price;
        }
    
        public void setPrice(Double price) {
            this.price = price;
        }
    
        @Override
        public String toString() {
            return "Book{" +
                    "bookId=" + bookId +
                    ", name='" + name + '\'' +
                    ", author='" + author + '\'' +
                    ", price=" + price +
                    '}';
        }
    }

    3.  Controller

    package io.zhangjia.ssm.controller;
    
    import io.zhangjia.ssm.entity.Book;
    import io.zhangjia.ssm.mapper.BookMapper;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Controller;
    import org.springframework.ui.Model;
    import org.springframework.web.bind.annotation.GetMapping;
    
    
    @Controller
    public class TestController {
        @Autowired
        private BookMapper bookMapper;
    
        @GetMapping("/test")
        public String Test(Integer id, Model model) {
            Book book = bookMapper.queryById(id);
            model.addAttribute("book",book);
            System.out.println("book = " + book);
            return "test";
        }
    }

    4. BookMapper

    package io.zhangjia.ssm.mapper;
    
    import io.zhangjia.ssm.entity.Book;
    
    public interface BookMapper {
            Book queryById(Integer bookId);
    }

    5.  Service

    package io.zhangjia.ssm.service;
    
    import org.springframework.stereotype.Service;
    
    @Service
    public class TestService {
    
    }

    6.  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="io.zhangjia.ssm.mapper.BookMapper">
    
        <select id="queryById" resultType="book">
            SELECT * FROM BOOK WHERE BOOK_ID = #{BOOK_ID}
        </select> 
    
    </mapper>

    7.  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 http://www.springframework.org/schema/tool http://www.springframework.org/schema/tool/spring-tool.xsd">
        <context:component-scan base-package="io.zhangjia.ssm"  >
            <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
            <context:exclude-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice"/>
        </context:component-scan>
    
    
        <context:property-placeholder location="classpath:jdbc.properties"/>
    
        <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
            <property name="driverClassName" value="${jdbc.driver}"/> <!--    OGNL-->
            <property name="url" value="${jdbc.url}"/>
            <property name="username" value="${jdbc.username}"/>
            <property name="password" value="${jdbc.password}"/>
        </bean>
    
        <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
            <property name="dataSource" ref="dataSource" />
        </bean>
    
    
        <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
            <property name="dataSource" ref="dataSource" />
            <property name="configLocation" value="classpath:mybatis-config.xml" />
            <property name="mapperLocations" value="classpath:mapper/*.xml" />
            <property name="typeAliasesPackage" value="io.zhangjia.ssm.entity" />  <!--起别名-->
        </bean>
    
        <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer" >
            <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
            <property name="basePackage" value="io.zhangjia.ssm.mapper"/>
        </bean>
    </beans>

    8.  jdbc.properties

    jdbc.driver=com.mysql.jdbc.Driver
    jdbc.url=jdbc:mysql://localhost:3306/demo2?useUnicode=true&characterEncoding=utf8
    jdbc.username=root
    jdbc.password=zhangjia

    9.  log4j.properties

    # Global logging configuration
    log4j.rootLogger=DEBUG, stdout
    #log4j.rootLogger=ERROR, stdout
    # MyBatis logging configuration...
    log4j.logger.org.mybatis.example.BlogMapper=TRACE
    # Console output...
    log4j.appender.stdout=org.apache.log4j.ConsoleAppender
    log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
    log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

    10.  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="mapUnderscoreToCamelCase" value="true"/>
            <setting name="lazyLoadingEnabled" value="true"/>
        </settings>
    
    </configuration>

    11.  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 https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd">
    
    
        <context:component-scan base-package="io.zhangjia.ssm"  >
            <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
            <context:include-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice"/>
        </context:component-scan>
    
    
    
        <!--配置视图解析器-->
        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
            <property name="prefix" value="/WEB-INF/views/"/>
            <property name="suffix" value=".jsp"/>
        </bean>
    
    
        <!--静态资源的请求转由Web容器处理-->
        <mvc:default-servlet-handler/>
    
    
        <!--配置默认组件-->
        <mvc:annotation-driven/>  <!--如果不配置这个,那么静态资源可以访问,Controller无法访问-->
    
    
    </beans>

    12.  test.jsp

    <%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8" %>
    <!DOCTYPE html>
    <html>
    <head>
        <title>Title</title>
    </head>
    <body>
    <h1>张大嘎</h1>
    ${requestScope.book}
    </body>
    </html>

    五.  使用Maven整合SSM

    使用Maven整合SSM非常简单,首先按照本站《Maven:使用IDEA基于Maven创建JavaWeb项目》一文的教程创建JavaWeb项目,

    并将pom.xml的内容替换为:

    <?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.oaec</groupId>
        <artifactId>ssm2</artifactId>
        <version>1.0-SNAPSHOT</version>
        <packaging>war</packaging>
    
        <name>ssm2 Maven Webapp</name>
        <!-- FIXME change it to the project's website -->
        <url>http://www.example.com</url>
    
        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <maven.compiler.source>1.7</maven.compiler.source>
            <maven.compiler.target>1.7</maven.compiler.target>
        </properties>
    
        <dependencies>
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>4.11</version>
                <scope>test</scope>
            </dependency>
    <!--*********************************************Spring依赖*************************************************-->
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context</artifactId>
                <version>5.1.8.RELEASE</version>
                <!--会自动添加以下依赖
                  Maven: org.springframework:spring-aop:5.1.8.RELEASE
                  Maven: org.springframework:spring-beans:5.1.8.RELEASE
                  Maven: org.springframework:spring-context:5.1.8.RELEASE
                  Maven: org.springframework:spring-core:5.1.8.RELEASE
                  Maven: org.springframework:spring-expression:5.1.8.RELEASE
                  Maven: org.springframework:spring-jcl:5.1.8.RELEASE
                -->
            </dependency>
    
    <!--*********************************************SpringMVC依赖*************************************************-->
    
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-webmvc</artifactId>
                <version>5.1.8.RELEASE</version>
                <!--会自动添加以下依赖
                Maven: org.springframework:spring-web:5.1.8.RELEASE
                Maven: org.springframework:spring-webmvc:5.1.8.RELEASE
                -->
            </dependency>
    
    
    <!--*********************************************Mybatis依赖*************************************************-->
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis</artifactId>
                <version>3.5.1</version>
            </dependency>
    
    <!--*********************************************spring-jdbc依赖*************************************************-->
    
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-jdbc</artifactId>
                <version>5.1.8.RELEASE</version>
                <!--会自动添加以下依赖
                Maven: org.springframework:spring-jdbc:5.1.8.RELEASE
                Maven: org.springframework:spring-tx:5.1.8.RELEASE
    
                -->
            </dependency>
    <!--*********************************************log4j*************************************************-->
            <dependency>
                <groupId>log4j</groupId>
                <artifactId>log4j</artifactId>
                <version>1.2.17</version>
            </dependency>
    
    <!--*********************************************mybatis-spring*************************************************-->
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis-spring</artifactId>
                <version>1.3.2</version>
                <!--该依赖用于mybatis和spring整合-->
            </dependency>
    
    
    <!--*********************************************mysql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.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>1.1.16</version>
            </dependency>
    
    <!--*********************************************Mybatis插件*************************************************-->
            <dependency>
                <groupId>com.github.pagehelper</groupId>
                <artifactId>pagehelper</artifactId>
                <version>5.1.9</version>
            </dependency>
    
    <!--*********************************************JSTL插件*************************************************-->
            <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>
            <!--*********************************************JSTL插件*************************************************-->
    
        </dependencies>
    
        <build>
            <finalName>ssm2</finalName>
            <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
                <plugins>
                    <plugin>
                        <artifactId>maven-clean-plugin</artifactId>
                        <version>3.1.0</version>
                    </plugin>
                    <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
                    <plugin>
                        <artifactId>maven-resources-plugin</artifactId>
                        <version>3.0.2</version>
                    </plugin>
                    <plugin>
                        <artifactId>maven-compiler-plugin</artifactId>
                        <version>3.8.0</version>
                    </plugin>
                    <plugin>
                        <artifactId>maven-surefire-plugin</artifactId>
                        <version>2.22.1</version>
                    </plugin>
                    <plugin>
                        <artifactId>maven-war-plugin</artifactId>
                        <version>3.2.2</version>
                    </plugin>
                    <plugin>
                        <artifactId>maven-install-plugin</artifactId>
                        <version>2.5.2</version>
                    </plugin>
                    <plugin>
                        <artifactId>maven-deploy-plugin</artifactId>
                        <version>2.8.2</version>
                    </plugin>
                </plugins>
            </pluginManagement>
        </build>
    </project>

    接下来将上文前四节中所有文件,按照下图的方式,分为放入指定文件夹即可完成ssm的整合

    使用Maven整合SSM

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