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# 分页插件

## **1. 引入依赖**

```xml
<dependency>
  <groupId>com.github.pagehelper</groupId>
  <artifactId>pagehelper</artifactId>
  <version>5.3.3</version>
</dependency>
```

## **2. 配置拦截器**

```java
// 启动分页拦截器
configuration.addInterceptor(new PageInterceptor());
```

## **3. 使用**

使用方式如下：

```java
@Test
public void testPage() {
  PageHelper.startPage(2, 2, false);
  PageHelper.orderBy("name");

  List<Country> countries = countryMapper.selectAll();
  Assert.isInstanceOf(Page.class, countries);
}
```

分页功能需要借助 PageHelper 这个工具类，详细细节直接阅读 PageHelper 的源码即可，代码逻辑非常简单，想要正确使用并不困难。

{% hint style="info" %}
参考：<https://pagehelper.github.io/docs/howtouse/>
{% endhint %}


---

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