修改下载

Jinquan_Ou

2023-03-19 cdf2aa0d36c5eab18cb15b0490cddce574017d66

修改下载

 ruoyi-admin/src/main/java/com/ruoyi/web/controller/common/CommonController.java

@@ -6,6 +6,7 @@
import javax.servlet.http.HttpServletResponse;
import javax.websocket.server.PathParam;

import com.ruoyi.service.DownLoadFileService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
@@ -34,6 +35,9 @@

    @Autowired
    private ServerConfig serverConfig;

    @Autowired
    private DownLoadFileService downLoadFileService;

    private static final String FILE_DELIMETER = ",";

@@ -69,6 +73,12 @@
        }
    }

    @GetMapping("/downLoadFile")
    public AjaxResult downLoadFile(@RequestParam("path") String path,HttpServletResponse response) throws Exception {
        return downLoadFileService.downLoadFile(path,response);
    }


    /**
     * 通用上传请求（单个）
     */

 zhang-content/src/main/java/com/ruoyi/service/DownLoadFileService.java

New file
@@ -0,0 +1,14 @@
package com.ruoyi.service;

import com.ruoyi.common.core.domain.AjaxResult;

import javax.servlet.http.HttpServletResponse;

/**
 * @Version 1.0
 * @Author Jin_quan Ou
 * @Date 2023-03-19 17:32
 */
public interface DownLoadFileService {
    AjaxResult downLoadFile(String path, HttpServletResponse response);
}

 zhang-content/src/main/java/com/ruoyi/service/impl/DownLoadFileServiceImpl.java

New file
@@ -0,0 +1,55 @@
package com.ruoyi.service.impl;

import com.ruoyi.common.core.domain.AjaxResult;
import com.ruoyi.service.DownLoadFileService;
import org.springframework.stereotype.Service;

import javax.servlet.http.HttpServletResponse;
import java.io.*;

/**
 * @Version 1.0
 * @Author Jin_quan Ou
 * @Date 2023-03-19 17:33
 */
@Service
public class DownLoadFileServiceImpl implements DownLoadFileService {
    @Override
    public AjaxResult downLoadFile(String path, HttpServletResponse response) {

        File file = new File(path);
        byte[] buffer = new byte[1024];
        BufferedInputStream bis = null;
        OutputStream os = null;
        try {
            //文件是否存在
            if (file.exists()) {
                //设置响应
                response.setContentType("application/octet-stream;charset=UTF-8");
                response.setHeader("Access-Control-Expose-Headers", "Content-Disposition");
                response.setHeader("Content-Disposition","attachment;filename=");
                response.setCharacterEncoding("UTF-8");
                os = response.getOutputStream();
                bis = new BufferedInputStream(new FileInputStream(file));
                while(bis.read(buffer) != -1){
                    os.write(buffer);
                }
            }
        }catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if(bis != null) {
                    bis.close();
                }
                if(os != null) {
                    os.flush();
                    os.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return AjaxResult.success("操作成功");
    }
}