feature1.0.0:添加文件下载方法

bnyer-services/bnyer-file/src/main/java/com/bnyer/file/controller/SysFileController.java

@@ -17,6 +17,7 @@ import org.springframework.web.bind.annotation.ResponseBody;
 import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.multipart.MultipartFile;
 
+import javax.servlet.http.HttpServletResponse;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
@@ -68,4 +69,11 @@ public class SysFileController
         }
         return R.ok(url);
     }
+
+    @PostMapping("/download")
+    @ResponseBody
+    public R download(@RequestParam("fileName") String fileName, HttpServletResponse response) {
+        minioService.download(fileName,response);
+        return R.ok();
+    }
 }

bnyer-services/bnyer-file/src/main/java/com/bnyer/file/service/MinioService.java

@@ -2,6 +2,7 @@ package com.bnyer.file.service;
 
 import org.springframework.web.multipart.MultipartFile;
 
+import javax.servlet.http.HttpServletResponse;
 import java.io.InputStream;
 
 /**
@@ -28,4 +29,11 @@ public interface MinioService {
      * @throws Exception
      */
     String uploadFileByThumb(MultipartFile file) throws Exception;
+
+    /**
+     * 下载图片
+     * @param fileName 文件名
+     * @param response 响应
+     */
+    void download(String fileName, HttpServletResponse response);
 }

bnyer-services/bnyer-file/src/main/java/com/bnyer/file/service/MinioSysFileServiceImpl.java

@@ -3,7 +3,9 @@ package com.bnyer.file.service;
 import com.bnyer.common.core.exception.ServiceException;
 import com.bnyer.file.config.MinioConfig;
 import com.bnyer.file.utils.ImgUtil;
+import io.minio.ObjectStat;
 import net.coobird.thumbnailator.Thumbnails;
+import org.apache.commons.compress.utils.IOUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.springframework.web.multipart.MultipartFile;
@@ -11,8 +13,10 @@ import com.bnyer.file.utils.FileUploadUtils;
 import io.minio.MinioClient;
 import io.minio.PutObjectArgs;
 
+import javax.servlet.http.HttpServletResponse;
 import java.awt.image.BufferedImage;
 import java.io.InputStream;
+import java.net.URLEncoder;
 
 /**
  * Minio 文件存储
@@ -69,4 +73,20 @@ public class MinioSysFileServiceImpl implements MinioService
         client.putObject(args);
         return minioConfig.getUrl() + "/" + minioConfig.getBucketName() + "/" + multipartFile.getName();
     }
+
+    @Override
+    public void download(String fileName, HttpServletResponse response) {
+        // 获取对象的元数据
+        try{
+            ObjectStat stat = client.statObject(minioConfig.getBucketName(), fileName);
+            response.setContentType(stat.contentType());
+            response.setCharacterEncoding("UTF-8");
+            response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "UTF-8"));
+            InputStream is = client.getObject(minioConfig.getBucketName(), fileName);
+            IOUtils.copy(is, response.getOutputStream());
+            is.close();
+        }catch (Exception e){
+            e.printStackTrace();
+        }
+    }
 }

pom.xml

@@ -36,7 +36,7 @@
         <velocity.version>2.3</velocity.version>
         <fastjson.version>1.2.80</fastjson.version>
         <jjwt.version>0.9.1</jjwt.version>
-        <minio.version>8.2.2</minio.version>
+        <minio.version>7.1.0</minio.version>
         <poi.version>4.1.2</poi.version>
         <commons-collections.version>3.2.2</commons-collections.version>
         <transmittable-thread-local.version>2.12.2</transmittable-thread-local.version>