saas_file_manager/zhongzheng-admin/src/main/java/com/zhongzheng/controller/CommonController.java

package com.zhongzheng.controller;

import cn.hutool.core.util.StrUtil;
import com.alibaba.fastjson.JSONObject;
import com.baomidou.mybatisplus.core.toolkit.CollectionUtils;
import com.zhongzheng.common.config.RuoYiConfig;
import com.zhongzheng.common.constant.Constants;
import com.zhongzheng.common.core.controller.BaseController;
import com.zhongzheng.common.core.domain.AjaxResult;
import com.zhongzheng.common.exception.CustomException;
import com.zhongzheng.common.utils.file.FileUploadUtils;
import com.zhongzheng.common.utils.file.FileUtils;
import com.zhongzheng.framework.config.ServerConfig;
import com.zhongzheng.modules.alioss.bo.FileHandleBo;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

/**
 * 通用请求处理
 *
 * @author zhongzheng
 */
@RestController
public class CommonController extends BaseController {
    private static final Logger log = LoggerFactory.getLogger(CommonController.class);

    @Autowired
    private ServerConfig serverConfig;

    /**
     * 通用下载请求
     *
     * @param fileName 文件名称
     * @param delete   是否删除
     */
    @GetMapping("common/download")
    public void fileDownload(String fileName, Boolean delete, HttpServletResponse response, HttpServletRequest request) {
        try {
            if (!FileUtils.checkAllowDownload(fileName)) {
                throw new Exception(StrUtil.format("文件名称({})非法，不允许下载。 ", fileName));
            }
            String realFileName = System.currentTimeMillis() + fileName.substring(fileName.indexOf("_") + 1);
            String filePath = RuoYiConfig.getDownloadPath() + fileName;

            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, realFileName);
            FileUtils.writeBytes(filePath, response.getOutputStream());
           /* if (delete)
            {
                FileUtils.deleteFile(filePath);
            }*/
            FileUtils.deleteFile(filePath);
        } catch (Exception e) {
            log.error("下载文件失败", e);
        }
    }

    /**
     * 通用上传请求
     */
    @PostMapping("/common/upload")
    public AjaxResult uploadFile(MultipartFile file) throws Exception {
        try {
            // 上传文件路径
            String filePath = RuoYiConfig.getUploadPath();
            // 上传并返回新文件名称
            String fileName = FileUploadUtils.upload(filePath, file);
            String url = serverConfig.getUrl() + fileName;
            AjaxResult ajax = AjaxResult.success();
            ajax.put("fileName", fileName);
            ajax.put("url", url);
            return ajax;
        } catch (Exception e) {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 文件分片处理
     */
    @PostMapping("/common/decompression")
    public AjaxResult<List<String>> uploadDecompression(MultipartFile file, String param) throws Exception {
        String zhiyuan = System.getProperty("user.dir");
        FileHandleBo bo = JSONObject.parseObject(param, FileHandleBo.class);
        String path = zhiyuan + "/zhongzheng-admin/src/main/resources/fenpian"+bo.getTimeSign();
        String[] split = bo.getName().split("\\.");
        String fileName = bo.getFileMd5() + "_" + bo.getIndex()+"."+ split[split.length - 1];
        FileUploadUtils.uploadFragment(path, file, fileName);
        File file2 = new File(path);
        List<String> fileNameList = Arrays.stream(file2.listFiles()).map(File::getName).collect(Collectors.toList());
        return AjaxResult.success(fileNameList);
    }

    /**
     * 本地文件删除
     */
    @GetMapping("/common/del/file")
    public AjaxResult<Void> delFile() {
        String zhiyuan = System.getProperty("user.dir");
        String toPath = zhiyuan + "/zhongzheng-admin/src/main/resources/zhiyuan";
        File directory = new File(toPath);
        try {
            Files.walk(directory.toPath())
                    .filter(Files::isRegularFile)
                    .map(Path::toFile)
                    .forEach(File::delete);
        }catch (Exception e){
            e.printStackTrace();
            throw new CustomException(e.getMessage());
        }
        return AjaxResult.success();
    }

    /**
     * 文件分片处理
     */
    @PostMapping("/common/merge/file")
    public AjaxResult uploadDecompression(@RequestBody FileHandleBo bo) throws Exception {
        String zhiyuan = System.getProperty("user.dir");
        String path = zhiyuan + "/zhongzheng-admin/src/main/resources/fenpian"+bo.getTimeSign();
        //全部上传完成 合并文件返回文件名称
        String toPath = zhiyuan + "/zhongzheng-admin/src/main/resources/zhiyuan"+bo.getTimeSign();
        File file1 = new File(toPath);
        if (!file1.exists()) {
            file1.mkdirs();
        }
        File ToFile = new File(toPath + "/" + bo.getName());
        if (ToFile.createNewFile()) {
            FileUploadUtils.merge(bo.getFileMd5(), path, ToFile.getPath());
            //校验文件MD5值
            String content = FileUtils.md5HashCode(ToFile.getPath());
            if (!bo.getFileMd5().equals(content)) {
                //文件不一致，删除文件
                ToFile.delete();
                //删除分片资源
                FileUtils.deleteFilePackage(zhiyuan + "/zhongzheng-admin/src/main/resources/fenpian"+bo.getTimeSign());
                throw new CustomException("文件上传失败！请重新上传");
            }
        }
        //删除分片资源
        FileUtils.deleteFilePackage(zhiyuan + "/zhongzheng-admin/src/main/resources/fenpian"+bo.getTimeSign());
        return AjaxResult.success();
    }

    @PostMapping("/common/delete/file")
    public AjaxResult deleteDecompression(@RequestBody FileHandleBo bo) throws Exception {
        //删除合并文件
        String zhiyuan = System.getProperty("user.dir");
        String toPath = zhiyuan + "/zhongzheng-admin/src/main/resources/zhiyuan"+bo.getTimeSign();
        File file = new File(toPath);
        List<File> files = Arrays.stream(file.listFiles()).collect(Collectors.toList());
        if (!CollectionUtils.isEmpty(files)){
            files.stream().filter(item -> item.getName().equals(bo.getName())).forEach(x -> {
                x.delete();
            });
        }
        return AjaxResult.success();
    }


    /**
     * 本地资源通用下载
     */
    @GetMapping("/common/download/resource")
    public void resourceDownload(String resource, HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        try {
            if (!FileUtils.checkAllowDownload(resource)) {
                throw new Exception(StrUtil.format("资源文件({})非法，不允许下载。 ", resource));
            }
            // 本地资源路径
            String localPath = RuoYiConfig.getProfile();
            // 数据库资源地址
            String downloadPath = localPath + StrUtil.subAfter(resource, Constants.RESOURCE_PREFIX, false);
            // 下载名称
            String downloadName = StrUtil.subAfter(downloadPath, "/", true);
            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, downloadName);
            FileUtils.writeBytes(downloadPath, response.getOutputStream());
        } catch (Exception e) {
            log.error("下载文件失败", e);
        }
    }

}