package com.by;

import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.redis.core.Cursor;
import org.springframework.data.redis.core.ScanOptions;
import org.springframework.data.redis.core.StringRedisTemplate;

@SpringBootTest
class ScanDemoTest {

    @Autowired(required = false)
    private StringRedisTemplate stringRedisTemplate;

    private final  String key = "student#01";
    @Test
    void test() {
        for(int i=0;i<100;i++){
            stringRedisTemplate.opsForValue().set("a"+i,"value"+i);
        }
        for(int i=0;i<100;i++){
            stringRedisTemplate.opsForValue().set("b"+i,"value"+i);
        }
        // 创建模糊查询 b*，count = 2   2是个参考值  match查询规则
        ScanOptions scanOptions = ScanOptions.scanOptions().match("b*").count(2).build();
        Cursor<String> cursor = stringRedisTemplate.scan(scanOptions);
        while (cursor.hasNext()){
            System.out.println(cursor.next());
        }
        //关闭游标
        cursor.close();
    }

}