MyBatis环境搭建，开发步骤

今天药忘吃喽~ 2023-01-20 09:38 159阅读 0赞

## MyBatis环境搭建 ##

### 1.pom.xml中引入MyBatis核心依赖 ###

<?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.qf</groupId>
        <artifactId>hello-mybatis</artifactId>
        <version>1.0-SNAPSHOT</version>
    
        
        <dependencies>
            
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis</artifactId>
                <version>3.4.6</version>
            </dependency>
    
            
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>5.1.47</version>
            </dependency>
    	  </dependencies>
    </project>

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### 2.创建MyBatis配置文件 ###

创建并配置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>
        
        <environments default="MySqlDB">
            
            <environment id="MySqlDB">
                
                <transactionManager type="JDBC"/>
                
                <dataSource type="org.apache.ibatis.datasource.pooled.PooledDataSourceFactory">
                    <property name="driver" value="com.mysql.jdbc.Driver"/>
                    
                    <property name="url" value="jdbc:mysql://localhost:3306/x?useUnicode=true&characterEncoding=utf-8"/>
                    <property name="username" value="xxx"/>
                    <property name="password" value="xxx"/>
                </dataSource>
            </environment>
        </environments>
    
        
        <mappers>
            
            <mapper resource="xxxMapper.xml"/>
        </mappers>
    </configuration>

<?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="jdbc.properties"/>
        <typeAliases>
            
            
            
            <package name="com.cos.entity"/>
        </typeAliases>
    
        
        <environments default="MySqlDB">
            
            <environment id="MySqlDB">
                
                <transactionManager type="JDBC"/>
                
                <dataSource type="org.apache.ibatis.datasource.pooled.PooledDataSourceFactory">
                    
                    <property name="driver" value="${jdbc.driver}"/>
                    <property name="url" value="${jdbc.url}"/>
                    <property name="username" value="${jdbc.username}"/>
                    <property name="password" value="${jdbc.password}"/>
                </dataSource>
            </environment>
        </environments>
    
        
        <mappers>
            
            <mapper resource=""/>
        </mappers>
    
    </configuration>

## MyBatis开发步骤\* ##

> **在pom.xml中添加依赖(MyBatis核心依赖,MySql驱动依赖)**
> 
> **1.建表**
> 
> **2.定义实体类**
> 
> **3.定义Dao接口**
> 
> **4.编写  XXXDaoMapper.xml（新建mapper文件夹）**
> 
> **5.注册Mapper(在mybatis-config.xml中注册)**

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