oss下载文件

src/main/java/cn/timer/api/controller/oss/OSSController.java

@@ -8,6 +8,7 @@ import org.apache.ibatis.annotations.Param;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.web.bind.annotation.DeleteMapping;
+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.RequestMapping;
@@ -105,6 +106,21 @@ public class OSSController {
 	}
 
 	/**
+	 * 下载
+	 */
+	@GetMapping(value = "/download")
+	@ApiOperation(value = "通过url直接下载文件", httpMethod = "GET", notes = "接口发布说明")
+	public Result<String> download(@CurrentUser UserBean userBean, @RequestParam String url,
+			@RequestParam String savePath) {
+		try {
+			oss.download(url, savePath);
+		} catch (Exception e) {
+			return ResultUtil.error("下载失败");
+		}
+		return ResultUtil.data("下载成功");
+	}
+
+	/**
 	 * 获取私密文件url(设置为10分钟有效)
 	 */
 	@PostMapping(value = "/getpri")

src/main/java/cn/timer/api/utils/aliyun/OSSUtil.java

@@ -19,6 +19,9 @@ import org.springframework.web.multipart.commons.CommonsMultipartResolver;
 
 import com.aliyun.oss.OSS;
 import com.aliyun.oss.OSSClientBuilder;
+import com.aliyun.oss.event.ProgressEvent;
+import com.aliyun.oss.event.ProgressEventType;
+import com.aliyun.oss.event.ProgressListener;
 import com.aliyun.oss.model.DeleteObjectsRequest;
 import com.aliyun.oss.model.DeleteObjectsResult;
 import com.aliyun.oss.model.GetObjectRequest;
@@ -484,4 +487,74 @@ public class OSSUtil {
 	 * // 关闭OSSClient。 ossClient.shutdown();
 	 */
 
+	public void download(String url, String savePath) {
+		// Endpoint以杭州为例，其它Region请按实际情况填写。
+//		String endpoint = "http://oss-cn-shenzhen.aliyuncs.com";
+//		// 阿里云主账号AccessKey拥有所有API的访问权限，风险很高。强烈建议您创建并使用RAM账号进行API访问或日常运维，请登录
+//		// https://ram.console.aliyun.com 创建RAM账号。
+//		String accessKeyId = "LTAI4FuaShJWQ1dggsFWG5CC";
+//		String accessKeySecret = "EJ6qToT4T4u0B5Rb6qrta9WkyGHvGR";
+//		String bucketName = "8time-v2";
+//		String objectName = "8timer2.0/117/test/测试.pdf";
+		OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
+//				String url = "http://8time-v2.oss-cn-shenzhen.aliyuncs.com/8timer2.0/310/qyxx/filepath/158872957193802f4a85a-9dd9-483a-9049-86fac5c73bd5.pdf?Expires=4747952308&OSSAccessKeyId=LTAI4FuaShJWQ1dggsFWG5CC&Signature=z%2FNIX0RrxnLuBLAS9olPpxxsCrI%3D";
+		try {
+			// 带进度条的下载。
+			ossClient.getObject(new GetObjectRequest(new URL(url), null), new File(savePath));
+//					new File("C:\\Users\\Lenovo\\Desktop\\8小时\\test2.pdf"));
+//					// 带进度条的下载。
+//					ossClient.getObject(new GetObjectRequest(bucketName, objectName).<GetObjectRequest>withProgressListener(
+//							new GetObjectProgressListener()), new File("C:\\Users\\Lenovo\\Desktop\\8小时\\test.pdf"));
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+		// 关闭OSSClient。
+		ossClient.shutdown();
+	}
+
+	static class GetObjectProgressListener implements ProgressListener {
+		private long bytesRead = 0;
+		private long totalBytes = -1;
+		private boolean succeed = false;
+
+		@Override
+		public void progressChanged(ProgressEvent progressEvent) {
+			long bytes = progressEvent.getBytes();
+			ProgressEventType eventType = progressEvent.getEventType();
+			switch (eventType) {
+			case TRANSFER_STARTED_EVENT:
+				System.out.println("Start to download......");
+				break;
+			case RESPONSE_CONTENT_LENGTH_EVENT:
+				this.totalBytes = bytes;
+				System.out.println(this.totalBytes + " bytes in total will be downloaded to a local file");
+				break;
+			case RESPONSE_BYTE_TRANSFER_EVENT:
+				this.bytesRead += bytes;
+				if (this.totalBytes != -1) {
+					int percent = (int) (this.bytesRead * 100.0 / this.totalBytes);
+					System.out.println(bytes + " bytes have been read at this time, download progress: " + percent
+							+ "%(" + this.bytesRead + "/" + this.totalBytes + ")");
+				} else {
+					System.out.println(bytes + " bytes have been read at this time, download ratio: unknown" + "("
+							+ this.bytesRead + "/...)");
+				}
+				break;
+			case TRANSFER_COMPLETED_EVENT:
+				this.succeed = true;
+				System.out.println("Succeed to download, " + this.bytesRead + " bytes have been transferred in total");
+				break;
+			case TRANSFER_FAILED_EVENT:
+				System.out.println("Failed to download, " + this.bytesRead + " bytes have been transferred");
+				break;
+			default:
+				break;
+			}
+		}
+
+		public boolean isSucceed() {
+			return succeed;
+		}
+	}
+
 }