add: config page

Author: yuxiaobin

en/guide/config.md

@@ -1 +1,45 @@
-# Config
+# Configuration
+
+Configuration for MyBatis-Plus is so easy, we just need a few configurations so that can have powerful functions. 
+
+::: tip
+Make sure you have installed MP. If not, please refer to [Install](install.md)
+:::
+
+- Spring Boot Structure：
+
+  - Configure MapperScan Annotation
+
+    ```java {2}
+    @SpringBootApplication
+    @MapperScan("com.baomidou.mybatisplus.samples.quickstart.mapper")
+    public class Application {
+
+        public static void main(String[] args) {
+            SpringApplication.run(QuickStartApplication.class, args);
+        }
+
+    }
+    ```
+
+- Spring MVC Structure：
+
+  - Configure `MapperScan` in application.xml
+
+    ```xml {2}
+    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
+        <property name="basePackage" value="com.baomidou.mybatisplus.samples.quickstart.mapper"/>
+    </bean>
+    ```
+
+  - Change SqlSessionFactory to `MybatisSqlSessionFactoryBean` of MP
+
+    ```xml {1}
+    <bean id="sqlSessionFactory" class="com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean">
+        <property name="dataSource" ref="dataSource"/>
+    </bean>
+    ```
+
+General speaking, for general projects, we can use MP just for configurations above. You also can refer to [Spring Boot Quick Start](https://github.com/baomidou/mybatis-plus-samples/tree/master/mybatis-plus-sample-quickstart)
+
+BTW, MP provides a lot of customized configurations to meet different needs. Refer to [Configurations](../config/README.md)