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IDEA集成SpringMVC+Spring+MyBatis

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正文

学习完MyBatis,Spring,SpringMVC之后,我们需要做的就是将这三者联系起来,Spring实现业务对象管理,Spring MVC负责请求的转发和视图管理, MyBatis作为数据对象持久化引擎。这样搭配的优点是:轻量、自由度高、Spring与Spring MVC契合度更好。通过一个图书管理示例完成SSM框架的集成。

项目构建

父模块

1.我们打开idea选择create new project,然后选择Maven项目,我们暂时先不要选择maven骨架,等我们的视图层(WEB-UI层)的时候再选择maven骨架 IDEA集成SpringMVC+Spring+MyBatis

IDEA集成SpringMVC+Spring+MyBatis

2.这一步输入组织名,模块名称 IDEA集成SpringMVC+Spring+MyBatis

  • Groupld: 组织名

  • artifactId: 模块名称

  • version: 版本号

在Maven世界中,每个工程都有它唯一的 组织名、模块名、版本 ,这三个就是maven项目的坐标。一个maven工程可以打包成jar、war、pom等形式,但是它们都是拥有上述三个坐标的。我们在项目过程中导入的jar包就是通过上述坐标值唯一确定的。因此,我们在创建一个maven工程时会要求指定具体的 组织名、模块名、版本、打包方式。

子模块(common层)

1.创建子模块common层,然后点击next IDEA集成SpringMVC+Spring+MyBatis

IDEA集成SpringMVC+Spring+MyBatis
IDEA集成SpringMVC+Spring+MyBatis
IDEA集成SpringMVC+Spring+MyBatis

子模块(Dao层)

由于之前的步骤都是一致,这里就不重复上述步骤了,直接完成最后一步 IDEA集成SpringMVC+Spring+MyBatis

子模块(Service层)

IDEA集成SpringMVC+Spring+MyBatis

子模块(Entity层)

实体层和mmon层一样都是同样的操作步骤,这里我们就不进行截图了,操作步骤都一样

子模块(WEB-UI层)

1.子模块web-ui层需要讲一下,因为我们这一层是视图层,所以我们需要选择maven骨架。 IDEA集成SpringMVC+Spring+MyBatis

2.然后点击next,输入模块名之后finish就可以了,在这里我们需要选择自己本地的中央仓库。自此我们的多模块项目已经搭建好了 IDEA集成SpringMVC+Spring+MyBatis

3.完整的项目结构如下: IDEA集成SpringMVC+Spring+MyBatis

4.在这里我们发现视图层多了webapp这个文件夹,以后的开发过程中我们的视图都是放在WEB_INF目录下的

  • common模块:通用模块,不依赖其它任何模块,主要有utils、可以在多个不同项目中使用

  • entitie模块:POJO、VO、DTO

  • dao模块:数据持久化,访问数据库,这里使用Mybatis

  • service模块:业务模块,处理业务逻辑

  • webui模块:B/S结构的表示层,主要用于在浏览器中显示数据,提供用户接口

模块依赖

父模块依赖

1.接下来我们去父模块的pom.xml文件进行统一的模块管理,为了方便管理版本和后续添加依赖不那么繁琐,我们在父模块pom.xml文件中只对依赖进行统一管理起来,而不进行依赖,当我们需要哪一个依赖的时候,我们只需要引入即可。

父模块pom.xml文件

<?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.ssm.booksystem</groupId>
    <artifactId>BookSystem</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>
    <modules>
        <module>Book-Common</module>
        <module>Book-Dao</module>
        <module>Book-Service</module>
        <module>Book-WEBUI</module>
        <module>Book-Entity</module>
    </modules>
    <properties>
        <!--模块内部依赖-->
        <Book-Common.version>1.0-SNAPSHOT</Book-Common.version>
        <Book-Dao.version>1.0-SNAPSHOT</Book-Dao.version>
        <Book-Service.version>1.0-SNAPSHOT</Book-Service.version>
        <Book-Entity.version>1.0-SNAPSHOT</Book-Entity.version>
        <Book-WEBUI.version>1.0-SNAPSHOT</Book-WEBUI.version>
        <!--Common模块管理-->
        <jackson.version>2.7.4</jackson.version>
        <commons-lang3.version>3.4</commons-lang3.version>
        <!--通用部分-->
        <log4j.version>2.6.1</log4j.version>
        <junit.version>4.12</junit.version>
        <spring-test.version>4.3.18.RELEASE</spring-test.version>
        <!--Spring-->
        <spring.version>4.3.0.RELEASE</spring.version>
        <aspectjweaver.version>1.8.9</aspectjweaver.version>
        <cglib.version>3.2.4</cglib.version>
        <!--mybatis-->
        <mybatis-spring.version>1.3.0</mybatis-spring.version>
        <mysql-connector-java.version>5.1.38</mysql-connector-java.version>
        <mybatis.version>3.4.1</mybatis.version>
        <c3p0.version>0.9.1.2</c3p0.version>
        <!--spring mvc-->
        <jstl.version>1.2</jstl.version>
        <servlet-api.version>4.0.1</servlet-api.version>
        <jsp-api.version>2.1</jsp-api.version>
        <hibernate.version>5.2.2.Final</hibernate.version>
        <commons-io.version>2.4</commons-io.version>
        <commons-fileupload.version>1.3.1</commons-fileupload.version>
        <freemarker.version>2.3.23</freemarker.version>

    </properties>
    <!--模块依赖进行统一管理-->
    <dependencyManagement>
            <dependencies>
                <dependency>
                    <groupId>com.ssm.booksystem</groupId>
                    <artifactId>Book-Common</artifactId>
                    <version>${Book-Common.version}</version>
                </dependency>
                <dependency>
                    <groupId>com.ssm.booksystem</groupId>
                    <artifactId>Book-Dao</artifactId>
                    <version>${Book-Dao.version}</version>
                </dependency>
                <dependency>
                    <groupId>com.ssm.booksystem</groupId>
                    <artifactId>Book-Service</artifactId>
                    <version>${Book-Service.version}</version>
                </dependency>
                <dependency>
                    <groupId>com.ssm.booksystem</groupId>
                    <artifactId>Book-Entity</artifactId>
                    <version>${Book-Entity.version}</version>
                </dependency>
                <dependency>
                    <groupId>com.ssm.booksystem</groupId>
                    <artifactId>Book-WEBUI</artifactId>
                    <version>${Book-WEBUI.version}</version>
                </dependency>
                <!--common模块-->
                <!--jackson-->
                <dependency>
                    <groupId>com.fasterxml.jackson.core</groupId>
                    <artifactId>jackson-databind</artifactId>
                    <version>${jackson.version}</version>
                </dependency>

                <dependency>
                    <groupId>com.fasterxml.jackson.core</groupId>
                    <artifactId>jackson-core</artifactId>
                    <version>${jackson.version}</version>
                </dependency>

                <dependency>
                    <groupId>com.fasterxml.jackson.core</groupId>
                    <artifactId>jackson-annotations</artifactId>
                    <version>${jackson.version}</version>
                </dependency>
                <!--apache-commons-->
                <dependency>
                    <groupId>org.apache.commons</groupId>
                    <artifactId>commons-lang3</artifactId>
                    <version>${commons-lang3.version}</version>
                </dependency>

                <!--log4j日志包 -->
                <dependency>
                    <groupId>org.apache.logging.log4j</groupId>
                    <artifactId>log4j-core</artifactId>
                    <version>${log4j.version}</version>
                </dependency>
                <!-- JUnit单元测试工具 -->
                <dependency>
                    <groupId>junit</groupId>
                    <artifactId>junit</artifactId>
                    <version>${junit.version}</version>
                </dependency>
                <dependency>
                    <groupId>org.springframework</groupId>
                    <artifactId>spring-test</artifactId>
                    <version>${spring-test.version}</version>
                </dependency>
                <!--Spring框架核心库 -->
                <dependency>
                    <groupId>org.springframework</groupId>
                    <artifactId>spring-context</artifactId>
                    <version>${spring.version}</version>
                </dependency>
                <!-- aspectJ AOP 织入器 -->
                <dependency>
                    <groupId>org.aspectj</groupId>
                    <artifactId>aspectjweaver</artifactId>
                    <version>${aspectjweaver.version}</version>
                </dependency>
                <dependency>
                    <groupId>cglib</groupId>
                    <artifactId>cglib</artifactId>
                    <version>${cglib.version}</version>
                </dependency>
                <!--mybatis-spring适配器 -->
                <dependency>
                    <groupId>org.mybatis</groupId>
                    <artifactId>mybatis-spring</artifactId>
                    <version>${mybatis-spring.version}</version>
                </dependency>
                <!--Spring java数据库访问包,在本例中主要用于提供数据源 -->
                <dependency>
                    <groupId>org.springframework</groupId>
                    <artifactId>spring-jdbc</artifactId>
                    <version>${spring.version}</version>
                </dependency>
                <!--mysql数据库驱动 -->
                <dependency>
                    <groupId>mysql</groupId>
                    <artifactId>mysql-connector-java</artifactId>
                    <version>${mysql-connector-java.version}</version>
                </dependency>
                <!-- mybatis ORM框架 -->
                <dependency>
                    <groupId>org.mybatis</groupId>
                    <artifactId>mybatis</artifactId>
                    <version>${mybatis.version}</version>
                </dependency>
                <!--c3p0 连接池 -->
                <dependency>
                    <groupId>c3p0</groupId>
                    <artifactId>c3p0</artifactId>
                    <version>${c3p0.version}</version>
                </dependency>

                <!-- Spring MVC -->
                <dependency>
                    <groupId>org.springframework</groupId>
                    <artifactId>spring-webmvc</artifactId>
                    <version>${spring.version}</version>
                </dependency>
                <dependency>
                    <groupId>org.springframework</groupId>
                    <artifactId>spring-context-support</artifactId>
                    <version>${spring.version}</version>
                </dependency>
                <!-- JSTL -->
                <dependency>
                    <groupId>javax.servlet</groupId>
                    <artifactId>jstl</artifactId>
                    <version>${jstl.version}</version>
                </dependency>
                <!-- Servlet核心包 -->
                <dependency>
                    <groupId>javax.servlet</groupId>
                    <artifactId>javax.servlet-api</artifactId>
                    <version>${servlet-api.version}</version>
                </dependency>
                <!--JSP -->
                <dependency>
                    <groupId>javax.servlet.jsp</groupId>
                    <artifactId>jsp-api</artifactId>
                    <version>${jsp-api.version}</version>
                </dependency>
                <!--JSR303 -->
                <dependency>
                    <groupId>org.hibernate</groupId>
                    <artifactId>hibernate-validator</artifactId>
                    <version>${hibernate.version}</version>
                </dependency>
                <!--文件上传 -->
                <dependency>
                    <groupId>commons-io</groupId>
                    <artifactId>commons-io</artifactId>
                    <version>${commons-io.version}</version>
                </dependency>
                <dependency>
                    <groupId>commons-fileupload</groupId>
                    <artifactId>commons-fileupload</artifactId>
                    <version>${commons-fileupload.version}</version>
                </dependency>
                <!-- FreeMarker -->
                <dependency>
                    <groupId>org.freemarker</groupId>
                    <artifactId>freemarker</artifactId>
                    <version>${freemarker.version}</version>
                </dependency>
            </dependencies>

    </dependencyManagement>

</project>
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子模块Comon层模块依赖

common模块中的pom.xml文件

<?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">
    <parent>
        <artifactId>BookSystem</artifactId>
        <groupId>com.ssm.booksystem</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>Book-Common</artifactId>
    <dependencies>
        <!--jackson-->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
        </dependency>
        <!--apache-commons-->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
        </dependency>
    </dependencies>

</project>
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子模块Dao层模块依赖

Dao模块中的pom.xml文件,这一层中我们需要依赖common层和实体层,因为在这一层中我们涉及到和数据库打交道,一张表就对应一个POJO

<?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">
    <parent>
        <artifactId>BookSystem</artifactId>
        <groupId>com.ssm.booksystem</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>Book-Dao</artifactId>
    <dependencies>
        <dependency>
            <groupId>com.ssm.booksystem</groupId>
            <artifactId>Book-Common</artifactId>
        </dependency>
        <dependency>
            <groupId>com.ssm.booksystem</groupId>
            <artifactId>Book-Entity</artifactId>
        </dependency>
        <!--log4j日志包 -->
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-core</artifactId>
        </dependency>
        <!-- JUnit单元测试工具 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
        </dependency>
        <!--Spring框架核心库 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
        </dependency>
        <!-- aspectJ AOP 织入器 -->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
        </dependency>
        <dependency>
            <groupId>cglib</groupId>
            <artifactId>cglib</artifactId>
        </dependency>

        <!--mybatis-spring适配器 -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
        </dependency>
        <!--Spring java数据库访问包,在本例中主要用于提供数据源 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
        </dependency>
        <!--mysql数据库驱动 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <!-- mybatis ORM框架 -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
        </dependency>
        <!--c3p0 连接池 -->
        <dependency>
            <groupId>c3p0</groupId>
            <artifactId>c3p0</artifactId>
        </dependency>
    </dependencies>

</project>
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子模块Service层模块依赖

Service模块中的pom.xml文件,这一层中我们需要依赖dao层

<?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">
    <parent>
        <artifactId>BookSystem</artifactId>
        <groupId>com.ssm.booksystem</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>Book-Service</artifactId>
    <dependencies>
        <dependency>
            <groupId>com.ssm.booksystem</groupId>
            <artifactId>Book-Dao</artifactId>
        </dependency>
    </dependencies>

</project>
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子模块Entity层模块依赖

实体层暂时不需要依赖任何的模块,Entity模块中的pom.xml文件

<?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">
    <parent>
        <artifactId>BookSystem</artifactId>
        <groupId>com.ssm.booksystem</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>Book-Entity</artifactId>


</project>
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子模块WEB-UI层模块依赖

Service模块中的pom.xml文件,这一层中我们需要依赖service层

<?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">
    <parent>
        <artifactId>BookSystem</artifactId>
        <groupId>com.ssm.booksystem</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>Book-WEBUI</artifactId>
    <packaging>war</packaging>

    <name>Book-WEBUI 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>
        <dependency>
            <groupId>com.ssm.booksystem</groupId>
            <artifactId>Book-Service</artifactId>
        </dependency>
        <!-- Spring MVC -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
        </dependency>
        <!-- Servlet核心包 -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
        </dependency>
        <!--文件上传 -->
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
        </dependency>

        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
        </dependency>
    </dependencies>

    <build>
        <finalName>Book-WEBUI</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>
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最终的依赖效果

IDEA集成SpringMVC+Spring+MyBatis

数据库连接

1.这是navicat的操作界面,前面的一些连接配置我在这里就不进行过多的描述了。 IDEA集成SpringMVC+Spring+MyBatis

2.右键localhost_3306选择新建数据库,输入数据的名称,字符集我们选择倒数第二个,也就是utf-8的然后确定就可了。 IDEA集成SpringMVC+Spring+MyBatis

3.数据库脚本

create table book(
    bid int auto_increment primary key not null COMMENT'图书编号',
    bname varchar(50) not null COMMENT'图书名称',
    bauthor VARCHAR(50) COMMENT'图书作者'
)
INSERT into book(bname,bauthor)VALUES
('斗罗大陆','唐家三少'),
('假如给我三天光明','海伦凯勒'),
('斗破苍穹','天蚕土豆'),
('雪鹰领主','我吃西红柿')
SELECT * from book
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IDEA集成SpringMVC+Spring+MyBatis

文件配置

1.首先我们先移除父模块的src目录,其实移不移除都无所谓,在这里我主要是为了影响干扰,移除之后目录如下: IDEA集成SpringMVC+Spring+MyBatis

2.我们需要在每一个子模块添加对应的包名和配置文件 子模块common层 IDEA集成SpringMVC+Spring+MyBatis

R.java

package com.booksystem.common;

import java.util.HashMap;
import java.util.Map;

/**
 * 返回数据封装
 */
public class R extends HashMap<String, Object> {
    private static final long serialVersionUID = 1L;
    
    public R() {
        put("code", 1);
        put("msg", "success");
    }

    //错误时
    public static R error() {
        return error(500, "未知异常,请联系管理员");
    }
    
    public static R error(String msg) {
        return error(500, msg);
    }
    
    public static R error(int code, String msg) {
        R r = new R();
        r.put("code", code);
        r.put("msg", msg);
        return r;
    }

    //成功时
    public static R ok(String msg) {
        R r = new R();
        r.put("msg", msg);
        return r;
    }
    
    public static R ok(Map<String, Object> map) {
        R r = new R();
        r.putAll(map);
        return r;
    }
    
    public static R ok() {
        return new R();
    }

    public static R ok(Object data) {
        return new R().put("data",data);
    }

    @Override
    public R put(String key, Object value) {
        super.put(key, value);
        return this;
    }
}
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子模块dao层 IDEA集成SpringMVC+Spring+MyBatis

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">
<!--命名空间应该是对应接口的包名+接口名 -->
<mapper namespace="com.booksystem.dao.BookDao">
    <!--查询全部图书信息-->
    <select id="getAllBooks"  resultMap="bookMap">
        select bid,bname,bauthor from  book
    </select>
    <!--配置数据表和实体的映射关系-->
    <resultMap id="bookMap" type="book">
        <id column="bid" property="bid"/>
        <result property="bname" column="bname"/>
        <result column="bauthor" property="bauthor"/>
    </resultMap>
</mapper>
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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:p="http://www.springframework.org/schema/p"
    xmlns:aop="http://www.springframework.org/schema/aop" 
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-4.3.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">

    <!--1 引入属性文件,在配置中占位使用 -->
    <context:property-placeholder location="classpath*:db.properties" />

    <!--2 配置C3P0数据源 -->
    <bean id="datasource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
        destroy-method="close">
        <!--驱动类名 -->
        <property name="driverClass" value="${mysql.driver}" />
        <!-- url -->
        <property name="jdbcUrl" value="${mysql.url}" />
        <!-- 用户名 -->
        <property name="user" value="${mysql.uid}" />
        <!-- 密码 -->
        <property name="password" value="${mysql.password}" />
        <!-- 当连接池中的连接耗尽的时候c3p0一次同时获取的连接数 -->
        <property name="acquireIncrement" value="${mysql.acquireIncrement}"></property>
        <!-- 初始连接池大小 -->
        <property name="initialPoolSize" value="${mysql.initialPoolSize}"></property>
        <!-- 连接池中连接最小个数 -->
        <property name="minPoolSize" value="${mysql.minPoolSize}"></property>
        <!-- 连接池中连接最大个数 -->
        <property name="maxPoolSize" value="${mysql.maxPoolSize}"></property>
    </bean>

    <!--3 会话工厂bean sqlSessionFactoryBean -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- mybatis核心配置文件路径 -->
        <property name="configLocation" value="classpath:mybatis.xml"></property>
        <!-- 数据源 -->
        <property name="dataSource" ref="datasource"/>
        <!-- sql映射文件路径[mapper路径] -->
        <property name="mapperLocations" value="classpath*:mapper/*Mapper.xml"></property>
    </bean>

    <!--4 自动扫描对象关系映射 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--指定会话工厂,如果当前上下文中只定义了一个则该属性可省去 -->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <!-- 指定要自动扫描接口的基础包,实现接口 -->
        <property name="basePackage" value="com.booksystem.dao"/>
    </bean>

    <!--5 声明式事务管理 -->
    <!--定义事物管理器,由spring管理事务 -->
    <bean id="transactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="datasource"></property>
    </bean>
    <!--支持注解驱动的事务管理,指定事务管理器 -->
    <tx:annotation-driven transaction-manager="transactionManager" />

    <!--6 容器自动扫描IOC组件 -->
    <context:component-scan base-package="com.booksystem.dao"/>

    <!--7 aspectj支持自动代理实现AOP功能 -->
    <aop:aspectj-autoproxy/>

</beans>
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db.properties

##mysql连接字符串
#驱动
mysql.driver=com.mysql.jdbc.Driver
#连接字符串
mysql.url=jdbc:mysql://localhost:3306/booksystem?useUnicode=true&characterEncoding=UTF-8
#用户名
mysql.uid=root
#密码
mysql.password=123456
mysql.acquireIncrement=5
mysql.initialPoolSize=10
mysql.minPoolSize=5
mysql.maxPoolSize=20
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mybatis.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>
    <properties resource="db.properties"></properties>
    <settings>
        <!--指定mybatis使用日志组件 -->
         <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>
    <!--设置别名-->
    <typeAliases>
        <package name="com.booksystem.entity"/>
    </typeAliases>
</configuration>
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BookDao,java

package com.booksystem.dao;

import com.booksystem.entity.Book;

import java.util.List;

public interface BookDao {
    //查询全部图书信息
    public List<Book> getAllBooks();

}
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子模块entity层 Book.java

package com.booksystem.entity;
/*
*图书实体类
* */
public class Book {

  private long bid; //图书编号
  private String bname; //  图书名称
  private String bauthor; //  图书作者


  public long getBid() {
    return bid;
  }

  public void setBid(long bid) {
    this.bid = bid;
  }


  public String getBname() {
    return bname;
  }

  public void setBname(String bname) {
    this.bname = bname;
  }


  public String getBauthor() {
    return bauthor;
  }

  public void setBauthor(String bauthor) {
    this.bauthor = bauthor;
  }
  //无参构造方法
  public Book(){}
  //带参构造方法
  public Book(long bid, String bname, String bauthor) {
    this.bid = bid;
    this.bname = bname;
    this.bauthor = bauthor;
  }

  @Override
  public String toString() {
    return "Book{" +
            "bid=" + bid +
            ", bname='" + bname + '/'' +
            ", bauthor='" + bauthor + '/'' +
            '}';
  }
}
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写了怎么多的东西,我们需要测试一下,减少错误,现在我们只是在做练习,代码量比较少但是到了真正项目的时候代码量肯定比现在多许多,为了养成这种习惯,我一般写到Dao层的时候就进行测试一下。

BookTest.java

package com.booksystem.dao;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.annotation.Rollback;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.transaction.annotation.Transactional;

import static org.junit.Assert.*;
//指定bean注入的配置文件
@ContextConfiguration("/applicationContext.xml")
//使用标准的junit
@RunWith(SpringJUnit4ClassRunner.class)
@Transactional    //事务管理
@Rollback(true) //是否回滚
public class BookDaoTest {
    @Autowired
    private  BookDao bookDao;
    @Test
    public void getAllBooks() {
        System.out.println(bookDao.getAllBooks());
    }
}
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IDEA集成SpringMVC+Spring+MyBatis

子模块service层 IDEA集成SpringMVC+Spring+MyBatis

BookService

package com.booksystem.service;

import com.booksystem.entity.Book;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
public interface BookService {
    //查询全部图书信息
    public List<Book> getAllBooks();
}
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BookImple

package com.booksystem.imple;

import com.booksystem.dao.BookDao;
import com.booksystem.entity.Book;
import com.booksystem.service.BookService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class BookImple  implements BookService {
    @Autowired
    public BookDao bookDao;
    public List<Book> getAllBooks() {
        return bookDao.getAllBooks();
    }
}
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子模块webui层 我们发现在这一层中没有存放源代码的文件加,所以我们需要自己添加,选择file,project structure IDEA集成SpringMVC+Spring+MyBatis

IDEA集成SpringMVC+Spring+MyBatis
IDEA集成SpringMVC+Spring+MyBatis

生成之后的目录 IDEA集成SpringMVC+Spring+MyBatis

IDEA集成SpringMVC+Spring+MyBatis

BookController.java

package com.book.controller;

import com.booksystem.common.R;
import com.booksystem.service.BookService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
@RequestMapping("/book")
public class BookController {
    @Autowired
    public BookService bookService;
    @GetMapping("/getAllBook")
    @ResponseBody
    public R getAllBook(){
        return  R.ok(bookService.getAllBooks());
    }
}
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springmvc-servlet.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-4.3.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd">

    <!-- 自动扫描包,实现支持注解的IOC -->
    <context:component-scan base-package="com.booksystem" />

    <!-- Spring MVC不处理静态资源 -->
    <mvc:default-servlet-handler />
    <!-- 支持mvc注解驱动 -->
    <mvc:annotation-driven enable-matrix-variables="true" />
    <!-- 配置映射媒体类型的策略 -->
    <bean
            class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping">
        <property name="removeSemicolonContent" value="false" />
    </bean>

    <!-- 内部视图解析器,JSP与JSTL模板 -->
    <bean
            class="org.springframework.web.servlet.view.InternalResourceViewResolver"
            id="internalResourceViewResolver">
        <!--指定视图渲染类 -->
        <property name="viewClass"
                  value="org.springframework.web.servlet.view.JstlView" />
        <!--自动添加到路径中的前缀 -->
        <property name="prefix" value="/WEB-INF/views/" />
        <!--自动添加到路径中的后缀 -->
        <property name="suffix" value=".html" />
        <!--设置所有视图的内容类型,如果视图本身设置内容类型视图类可以忽略 -->
        <property name="contentType" value="text/html;charset=UTF-8" />
        <!-- 优先级,越小越前 -->
        <property name="order" value="1" />
    </bean>

    <!--文件上传解析器 -->
    <!--Spring MVC默认不能识别multipart格式的文件内容 -->
    <bean id="multipartResolver"
          class="org.springframework.web.multipart.support.StandardServletMultipartResolver">
    </bean>
    <mvc:cors>
        <mvc:mapping path="/**"
                     allowed-origins="*"
                     allowed-methods="POST,GET, OPTIONS,DELETE,PUT"
                     allowed-headers="Content-Type,ContentType,Access-Control-Allow-Headers, Authorization, X-Requested-With"
                     allow-credentials="true"/>
    </mvc:cors>
</beans>
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web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://java.sun.com/xml/ns/javaee"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
         id="WebApp_ID" version="3.0">

  <welcome-file-list>
    <!--欢迎页-->
    <welcome-file>index.html</welcome-file>
  </welcome-file-list>

  <listener>
    <description>Spring容器加载监听器</description>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <context-param>
    <description>设置Spring加载时的配置文件位置,默认位置在WEB-INF/lib目录下</description>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath*:applicationContext.xml</param-value>
  </context-param>
  <!--Spring MVC 前置Servlet,中心控制器 -->
  <servlet>
    <servlet-name>springmvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <!--Spring MVC配置文件路径 -->
      <param-value>classpath*:springmvc-servlet.xml</param-value>
    </init-param>
    <!-- 启动动优先级,越小越早加载 -->
    <load-on-startup>1</load-on-startup>
    <!--Servlet3.0以上文件上传配置 -->
    <multipart-config>
      <!--上传文件的最大限制5MB -->
      <max-file-size>5242880</max-file-size>
      <!--请求的最大限制20MB -->
      <max-request-size>20971520</max-request-size>
      <!--当文件的大小超过临界值时将写入磁盘 -->
      <file-size-threshold>0</file-size-threshold>
    </multipart-config>
  </servlet>
  <!-- Servlet访问的路径映射,所有的访问都必须经过调度用的前置控制品 -->
  <servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

  <!--编码过滤器 -->
  <filter>
    <filter-name>characterEncodingFilter</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>
    <init-param>
      <param-name>forceEncoding</param-name>
      <param-value>true</param-value>
    </init-param>
  </filter>
  <!-- 路径映射 -->
  <filter-mapping>
    <filter-name>characterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
</web-app>
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3.配置tomcat IDEA集成SpringMVC+Spring+MyBatis

IDEA集成SpringMVC+Spring+MyBatis
IDEA集成SpringMVC+Spring+MyBatis

4.项目部署 IDEA集成SpringMVC+Spring+MyBatis

5.启动项目 IDEA集成SpringMVC+Spring+MyBatis

index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>图书管理系统</title>
    <style>
        h1{
            text-align: center;
        }
        #myTab{
            width: 800px;
            margin: 0  auto;
        }
    </style>
</head>
<body>
<h1>图书管理系统</h1>
<table id="myTab" cellpadding="0" cellspacing="0" border="1">
    <tr>
        <td>编号</td>
        <td>名称</td>
        <td>作者</td>
    </tr>
</table>
<script src="js/jquery-1.11.3.min.js"></script>
<script>
    $.ajax({
        url:'/book/getAllBook',
        type:'get',
        dataType:'json',
    }).done(function (data) {
        if(data.code===1){
            $("#myTab tr:not(:eq(0))").remove();
            for (var i=0;i<data.data.length;i++){
                var tr="<tr>";
                tr+="<td>"+(i+1)+"</td>";
                tr+="<td>"+data.data[i].bname+"</td>";
                tr+="<td>"+data.data[i].bauthor+"</td>";
                tr+="</tr>"
                $("#myTab").append(tr);
            }
        }
    })
</script>
</body>
</html>
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结尾

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【原创】|二郎神杨戬

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IDEA集成SpringMVC+Spring+MyBatis
原文  https://juejin.im/post/5f108a9df265da22d26b9cc1
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