MyBatis Plus中使用分页插件也很简单：
首先编写配置类：
@Configuration
public class MyBatisPlusConfig {
@Bean
public MybatisPlusInterceptor mybatisPlusInterceptor() {
// 构造拦截器
MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
// 添加分页插件
interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
return interceptor;
}
}
大功告成！现在来测试一下吧：
@Test
void contextLoads() {
Page<User> page = new Page<>(1, 2);
userMapper.selectPage(page, null);
System.out.println(page);
}
==> Preparing: SELECT COUNT(*) AS total FROM user WHERE is_delete = 0
==> Parameters:
<== Columns: total
<== Row: 3
<== Total: 1
==> Preparing: SELECT id,name,age,email,is_delete FROM user WHERE is_delete=0 LIMIT ?
==> Parameters: 2(Long)
<== Columns: id, name, age, email, is_delete
<== Row: 2, hello, 33, 111@qq.com, 0
<== Row: 3, hello, 18, 34567@qq.com, 0
<== Total: 2
也可以很容易的获取分页相关的数据：
程序实例：
@Test
void contextLoads() {
Page<User> page = new Page<>(1, 2);
userMapper.selectPage(page, null);
// 获取当前页的记录
List<User> records = page.getRecords();
records.forEach(System.out::println);
// 获取当前页的页码
long current = page.getCurrent();
System.out.println(current);
// 获取分页的总页码数
long size = page.getSize();
System.out.println(size);
// 判断是否有下一页
boolean b = page.hasNext();
System.out.println(b);
// 判断是否有上一页
boolean b1 = page.hasPrevious();
System.out.println(b1);
}
首先，定义一个mapper接口，返回一个Page对象：
Page<User> selectPageVo(@Param("page") Page<User> page, @Param("age") Integer age);
实现mapper接口：
<select id="selectPageVo" resultType="User">
select id,name,age,email from user where age = #{age}
</select>
我们使用了类型别名，不要忘记在配置类中开启扫描类型别名所在的包：
mybatis-plus: ... # 配置类型别名对应的包 type-aliases-package: com.klza.pojo
现在来测试一下吧：
@Test
void contextLoads() {
Page<User> page = new Page<>(1, 2);
Page<User> userPage = userMapper.selectPageVo(page, 18);
System.out.println(userPage);
}
==> Preparing: SELECT COUNT(*) AS total FROM user WHERE age = ?
==> Parameters: 18(Integer)
<== Columns: total
<== Row: 2
<== Total: 1
==> Preparing: select id,name,age,email from user where age = ? LIMIT ?
==> Parameters: 18(Integer), 2(Long)
<== Columns: id, name, age, email
<== Row: 3, hello, 18, 34567@qq.com
<== Row: 4, hello, 18, 34567@qq.com
<== Total: 2
到此这篇关于详解MyBatis Plus中分页插件的使用的文章就介绍到这了,更多相关MyBatis Plus分页插件内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家！
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