Page分页对象与Map转换工具类

import com.alibaba.fastjson.JSON;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;

import java.util.HashMap;
import java.util.Map;

public class PageToCacheMapUtils<T> {

    public static <T> Page<T> cacheMapToPage(Map<String, String> cacheVal, Class<T> clazz) {
        Page<T> page = new Page<>();
        page.setCurrent(Long.valueOf(cacheVal.get("current")));
        page.setSize(Long.valueOf(cacheVal.get("size")));
        page.setTotal(Long.valueOf(cacheVal.get("total")));
        page.setRecords(JSON.parseArray(cacheVal.get("records"), clazz));
        return page;
    }

    public static <T> Map<String, String> pageToCacheMap(Page<T> pageData) {
        Map<String, String> cacheVal = new HashMap<>();
        cacheVal.put("current", String.valueOf(pageData.getCurrent()));
        cacheVal.put("size", String.valueOf(pageData.getSize()));
        cacheVal.put("total", String.valueOf(pageData.getTotal()));
        cacheVal.put("records", JSON.toJSONString(pageData.getRecords()));
        return cacheVal;
    }
}