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sws

2022-11-26 ab849f796bdc17236a95ea5fe5c166fb8f24a75c

 src/main/java/com/lf/server/service/all/BaseUploadService.java

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package com.lf.server.service.all;

import com.lf.server.entity.data.MetaFileEntity;
import com.lf.server.helper.FileHelper;
import com.lf.server.helper.PathHelper;
import com.lf.server.helper.StringHelper;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.support.StandardMultipartHttpServletRequest;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.IOException;
import java.lang.reflect.Field;
import java.sql.Timestamp;
import java.util.*;

/**
 * çˆ¶ä¸Šä¼ æœåŠ¡
 * @author WWW
 */
@Service
public class BaseUploadService {
    @Autowired
    public PathHelper pathHelper;

    public final Log log = LogFactory.getLog(getClass());

    /**
     * æŸ¥è¯¢æ–‡ä»¶
     */
    public List<MetaFileEntity> selectFiles(String subPath, List<String> extList) throws IOException {
        String root = pathHelper.getConfig().getTempPath() + File.separator + subPath;

        File file = new File(root);
        if (!file.exists() && !file.isDirectory()) {
            return null;
        }
        File[] files = file.listFiles();
        if (null == files || files.length == 0) {
            return null;
        }

        List<MetaFileEntity> list = new ArrayList<MetaFileEntity>();
        for (File f : files) {
            String fileName = FileHelper.getFileName(f.getPath());
            if (null != extList) {
                String extName = FileHelper.getExtension(fileName);
                if (!extList.contains(extName)) {
                    continue;
                }
            }

            double sizes = FileHelper.sizeToMb(f.length());
            String filePath = subPath + File.separator + fileName;

            MetaFileEntity mf = new MetaFileEntity();
            mf.setName(fileName);
            mf.setSizes(sizes);
            mf.setPath(filePath);
            mf.setGuid(FileHelper.getFileMd5(f.getPath()));

            list.add(mf);
        }

        return list;
    }

    /**
     * æŸ¥è¯¢ç›®å½•
     */
    public String selectPath() {
        return pathHelper.getTempPathName();
    }

    /**
     * ä¸Šä¼ æ–‡ä»¶
     */
    public <T> List<MetaFileEntity> uploadData(T t, String path, HttpServletRequest req, HttpServletResponse res) throws Exception {
        StandardMultipartHttpServletRequest request = (StandardMultipartHttpServletRequest) req;
        req.setCharacterEncoding("utf-8");
        res.setContentType("application/json;charset=utf-8");

        if (t != null) {
            setEntity(t, request);
        }
        List<MetaFileEntity> list = getFiles(path, request);

        return list;
    }

    /**
     * è®¾ç½®å®žä½“ç±»
     */
    private <T> void setEntity(T t, StandardMultipartHttpServletRequest req) {
        Enumeration<String> enumeration = req.getParameterNames();
        while (enumeration.hasMoreElements()) {
            String key = enumeration.nextElement();

            try {
                Field field = t.getClass().getDeclaredField(key);
                field.setAccessible(true);
                String value = req.getParameter(key);

                switch (field.getType().toString()) {
                    case "double":
                        field.set(t, Double.valueOf(value));
                        break;
                    case "long":
                        field.set(t, Long.valueOf(value));
                        break;
                    case "int":
                        field.set(t, Integer.valueOf(value));
                        break;
                    case "class java.sql.Timestamp":
                        field.set(t, Timestamp.valueOf(value));
                        break;
                    //case "class java.lang.String":
                    default:
                        field.set(t, value);
                        break;
                }
            } catch (Exception ex) {
                log.error(ex.getMessage(), ex);
            }
        }
    }

    /**
     * èŽ·å–文件
     */
    public List<MetaFileEntity> getFiles(String subPath, StandardMultipartHttpServletRequest req) throws Exception {
        List<MetaFileEntity> list = new ArrayList<MetaFileEntity>();

        String path = pathHelper.getTempPath(subPath);
        Iterator<String> iterator = req.getFileNames();
        while (iterator.hasNext()) {
            MultipartFile file = req.getFile(iterator.next());
            if (StringHelper.isEmpty(file.getOriginalFilename())) {
                continue;
            }

            double sizes = FileHelper.sizeToMb(file.getSize());
            MetaFileEntity mf = new MetaFileEntity();
            mf.setName(file.getOriginalFilename());
            mf.setSizes(sizes);
            mf.setPath(path + File.separator + mf.getName());

            file.transferTo(new File(mf.getPath()));
            mf.setGuid(FileHelper.getFileMd5(mf.getPath()));

            list.add(mf);
        }

        return list;
    }

    /**
     * åˆ é™¤æ–‡ä»¶
     */
    public Integer deleteFiles(List<MetaFileEntity> list) {
        String root = pathHelper.getConfig().getTempPath();

        int count = 0;
        for (MetaFileEntity entity : list) {
            if (!StringHelper.isEmpty(entity.getPath())) {
                String file = root + File.separator + entity.getPath();

                File f = new File(file);
                if (f.exists()) {
                    f.delete();
                    count++;
                }
            }
        }

        return count;
    }

    /**
     * èŽ·å–参数
     * Enumeration<String> headers = req.getHeaderNames();
     * Enumeration<String> attributes = req.getAttributeNames();
     */
    public Map<String, String> getParams(StandardMultipartHttpServletRequest req) {
        Map<String, String> map = new HashMap<String, String>(3);

        Enumeration<String> enumeration = req.getParameterNames();
        while (enumeration.hasMoreElements()) {
            String key = enumeration.nextElement();
            String value = req.getParameter(key);
            map.put(key, value);
        }

        return map;
    }
}