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2022-12-29 1d53dd8f501a98ddcce8146443b51b357ef5f9b1

 src/main/java/com/lf/server/service/data/UploaderService.java

@@ -1,218 +1,13 @@
package com.lf.server.service.data;

import com.lf.server.entity.ctrl.FileInfo;
import com.lf.server.entity.data.MetaFileEntity;
import com.lf.server.entity.sys.UserEntity;
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.apache.tomcat.util.http.fileupload.FileItem;
import org.apache.tomcat.util.http.fileupload.disk.DiskFileItemFactory;
import org.apache.tomcat.util.http.fileupload.servlet.ServletFileUpload;
import org.apache.tomcat.util.http.fileupload.servlet.ServletRequestContext;
import org.springframework.beans.factory.annotation.Autowired;
import com.lf.server.service.all.BaseUploadService;
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.lang.reflect.Field;
import java.sql.Timestamp;
import java.util.*;

/**
 * 数据上传服务类
 * 上传服务类
 * @author WWW
 */
@Service
public class UploaderService {
    @Autowired
    PathHelper pathHelper;

    private final static Log log = LogFactory.getLog(UploaderService.class);

    /**
     * 上传文件
     */
    public <T> List<MetaFileEntity> uploadData(T t, UserEntity ue, HttpServletRequest request, HttpServletResponse res) throws Exception {
        StandardMultipartHttpServletRequest req = (StandardMultipartHttpServletRequest) request;
        req.setCharacterEncoding("utf-8");
        res.setContentType("application/json;charset=utf-8");

        setEntity(t, req);
        List<MetaFileEntity> list = getFiles(req);

        return list;
    }

    /**
     * 设置实体类
     * class<T> clazz
     * T t = clazz.newInstance();
     */
    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);
                if (field != null) {
                    field.setAccessible(true);
                    String value = req.getParameter(key);

                    switch (field.getType().toString()) {
                        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.getStackTrace());
            }
        }
    }

    /**
     * 获取文件
     */
    private List<MetaFileEntity> getFiles(StandardMultipartHttpServletRequest req) throws Exception {
        List<MetaFileEntity> list = new ArrayList<MetaFileEntity>();

        String path = pathHelper.getTempPath();
        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;
    }

    public Object fileUpload(HttpServletRequest req, HttpServletResponse res) throws Exception {
        List<FileItem> items = getFileItem(req, res);

        return copeFileItems(items, req);
    }

    /**
     * 获取文件项
     */
    private List<FileItem> getFileItem(HttpServletRequest req, HttpServletResponse res) throws Exception {
        // 处理中文乱码问题
        req.setCharacterEncoding("utf-8");
        // text/html;charset=utf-8
        res.setContentType("application/json;charset=utf-8");

        // 检查请求是/否为multipart/form-data类型
        if (!ServletFileUpload.isMultipartContent(req)) {
            throw new RuntimeException("表单的enctype属性不是multipart/form-data类型");
        }

        // 创建上传所需要的两个对象：磁盘文件对象+文件上传对象
        DiskFileItemFactory factory = new DiskFileItemFactory();
        ServletFileUpload sfu = new ServletFileUpload(factory);
        ServletRequestContext ctx = new ServletRequestContext(req);

        // 设置编码方式
        sfu.setHeaderEncoding("utf-8");
        factory.setSizeThreshold(4096);

        // 获取表单中的所有数据信息
        List<FileItem> list = sfu.parseRequest(ctx);

        return list;
    }

    /**
     * 处理解析内容：处理普通表单域和文件表单域
     */
    private Object copeFileItems(List<FileItem> items, HttpServletRequest req) throws Exception {
        Map<String, String> map = new HashMap<String, String>(3);
        List<FileInfo> list = new ArrayList<FileInfo>();

        String path = pathHelper.getTempPath();
        for (FileItem item : items) {
            if (item.isFormField()) {
                String key = item.getFieldName();
                String value = item.getString("utf-8");
                map.put(key, value);
                continue;
            }

            FileInfo fi = copeFile(item, path, req);
            if (fi != null) {
                list.add(fi);
            }
        }

        return map;
    }

    /**
     * 处理文件
     */
    private FileInfo copeFile(FileItem item, String path, HttpServletRequest req) {
        try {
            // 获取文件名，判断是否合法
            FileInfo fi = new FileInfo(item.getName());
            if (StringHelper.isEmpty(fi.getFileName())) {
                return null;
            }

            fi.setSize(item.getSize());
            fi.setPath(path + File.separator + fi.getFileName());
            item.write(new File(fi.getPath()));

            return fi;
        } catch (Exception ex) {
            log.error(ex.getStackTrace());
            return null;
        }
    }

    /**
     * 获取参数
     * Enumeration<String> headers = req.getHeaderNames();
     * Enumeration<String> attributes = req.getAttributeNames();
     */
    private 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;
    }
public class UploaderService extends BaseUploadService {
    //
}