PAS/src/main/java/cn/cslg/pas/service/business/CommonService.java

package cn.cslg.pas.service.business;

import cn.cslg.pas.Application;
import cn.cslg.pas.common.utils.FileUtils;
import cn.cslg.pas.common.utils.JsonUtils;
import cn.cslg.pas.common.vo.QueryFiledVO;
import cn.cslg.pas.common.vo.QueryFieldsVO;
import cn.cslg.pas.common.vo.UploadSettingVO;
import cn.cslg.pas.domain.business.Event;
import com.alibaba.fastjson.JSON;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.system.ApplicationHome;
import org.springframework.stereotype.Service;

import java.io.*;
import java.util.*;

/**
 * 公用服务类
 *
 * @author lrj
 */
@Service
@Slf4j
public class CommonService {

    @Autowired
    private EventService eventService;
    @Autowired
    private FileUtils fileUtils;
    /**
     * 根据获得文件json
     *
     * @param fileName
     * @return
     */
    public static String readJsonFile(String fileName) {
        String json = "";
        try {
            ApplicationHome ah = new ApplicationHome(Application.class);
            //获取 applicationHome 内的路径 ...\target\classes 到这一层级下
            File fileTem = ah.getSource();
            //获取 file的parentFile 即最后一级之前的所有层级路径(包括盘符) 这里能获得到的最终层级为  ...\target 后续用FILE_SEPARATOR(系统路径分割通配符 即 "\") 以及fileName拼接生成存放文件的目录层级 即为根目录 root
            String rootPath = fileTem.getParentFile().toString() + FileUtils.FILE_SEPARATOR+"jsons/";
//            String filePath = fileUtils.getPath("/11.docx");
            File file = new File(rootPath + fileName);
            Reader reader = new InputStreamReader(new FileInputStream(file), "utf-8");
            int ch = 0;
            StringBuffer buffer = new StringBuffer();
            while ((ch = reader.read()) != -1) {
                buffer.append((char) ch);
            }
            reader.close();
            json = buffer.toString();
            return json;
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
    }

    public List<QueryFieldsVO> getQueryConditions(List<String> tableNames) {
        List<QueryFieldsVO> entityVOS = new ArrayList<>();
        tableNames.forEach(item -> {
            String json = null;
            try {
                json = CommonService.readJsonFile(item + ".json");

            } catch (Exception e) {

            }
            if (json != null) {
                QueryFieldsVO entityVO = new QueryFieldsVO();
                entityVO.setTableName(item);
                List<QueryFiledVO> queryConditions = JSON.parseArray(json, QueryFiledVO.class);
                entityVO.setConditionDTOList(queryConditions);
                entityVOS.add(entityVO);
            }
        });
        return entityVOS;
    }

    public  List<Integer> getEventOrders(Integer orderType){
        LambdaQueryWrapper<Event> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.select(Event::getId);
        if (orderType.equals(0)) {
            queryWrapper.orderByAsc(Event::getName);
        } else {
            queryWrapper.orderByDesc(Event::getName);
        }
        java.util.function.Function<Object, Integer> f = (o -> Integer.parseInt(o.toString()));
        List<Integer> ids = eventService.listObjs(queryWrapper, f);
        return ids;
    }

    public List<Map<String, Object>>  getExcelConfig() {
        List<Map<String,Object>> maps =new ArrayList<>();
        //创建map用于装载：1.自定义字段（标引/非树类型字段、分类/树类型字段）  2.文件夹  3.数据来源，和返回结果
        String json = CommonService.readJsonFile("uploadSetting.json");
        List<UploadSettingVO> uploadSettingVOs = JsonUtils.jsonToList(json, UploadSettingVO.class);
        uploadSettingVOs.forEach(item->{
            Map<String, Object> map =new HashMap<>();
            map.put("name",item.getName());
            map.put("id",item.getSourceId());
            maps.add(map);
        });
        return maps;
}

    public static String readFile(String fileName) {
        String json = "";
        try {
            //获取 applicationHome 内的路径 ...\target\classes 到这一层级下
            //获取 file的parentFile 即最后一级之前的所有层级路径(包括盘符) 这里能获得到的最终层级为  ...\target 后续用FILE_SEPARATOR(系统路径分割通配符 即 "\") 以及fileName拼接生成存放文件的目录层级 即为根目录 root
//            String filePath = fileUtils.getPath("/11.docx");
            File file = new File(fileName);
            Reader reader = new InputStreamReader(new FileInputStream(file), "utf-8");
            int ch = 0;
            StringBuffer buffer = new StringBuffer();
            while ((ch = reader.read()) != -1) {
                buffer.append((char) ch);
            }
            reader.close();
            json = buffer.toString();
            return json;
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
    }
}