springboot使用mapper.xml

一.引入依賴

pom.xml的<build>標簽內，增加

 <!-- 如果不添加此節點mybatis的mapper.xml文件不會被引用 -->
        <resources>
            <!-- src/main/java目錄下的配置文件 -->
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
            <!-- src/main/resources目錄下的配置文件 -->
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>

二.application.properties或application.yml配置

小心別給路徑搞錯了，注意有幾層目錄

/*
* 配置mapper.xml所在路徑
*/
//.properties
mybatis.mapper-locations=classpath:com/*/mapper/xml/*.xml

//.yml
mybatis:
   mapper-locations=classpath:com/*/mapper/xml/*.xml

三.Dao接口編寫

@Mapper
public interface UserDao {

    void userInsert(Users user);

}

四.xml文件的創建

建議放在如圖位置

<?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="com.wx.mapper.UserDao">

    <insert id="userInsert" parameterType="com.wx.entity.Users">
        insert into users (name,age,sex,address) values(#{name},#{age},#{sex},#{province})
    </insert>

</mapper>

具體mapper.xml的寫法很容易找到，不寫了