通用图片预览组件调整

src/api/common.js

@@ -40,8 +40,8 @@ export const uploadFile = (file, data) => {
 };
 
 
-// 对象存储预览 /traoss/tras3/show/{文件ID}
-export function previewFile(id,responseType = 'arraybuffer') {
+// 对象存储预览 /traoss/tras3/show/{文件ID} 
+export function previewFile(id, responseType = 'arraybuffer') {
     const token = getToken();  
     const header = {
 			"Content-Type": "application/x-www-form-urlencoded; charset=UTF-8",
@@ -67,4 +67,32 @@ export function previewFile(id,responseType = 'arraybuffer') {
 			}  
 		});  
 	});
+}
+// 缩略图预览 /traoss/tras3/getCacheThumbImage/{fileId}/{width}/{height}
+export function previewCacheThumbImage(id, width = 30, height = 30) {
+    const token = getToken();  
+    const header = {
+			"Content-Type": "application/x-www-form-urlencoded; charset=UTF-8",
+		};  
+    if (token) 
+        header['summary'] = token
+    let baseUrl = get_base_url();  
+	
+	return new Promise((resolve, reject) => {  
+		uni.request({  
+			url: `${baseUrl}/traoss/tras3/getCacheThumbImage/${id}/${width}/${height}`,  
+			header,  
+			responseType,
+			success(result) {  
+				console.log(result)
+				let _header = result.header['content-type'].split(';')[0]
+				// let base64 = new Blob([result.data],{type:result.header['content-type'].split(';')[0]})
+				let base64 = `data:${_header};base64,` + uni.arrayBufferToBase64(result.data)
+				resolve(base64)
+			},  
+			fail(error) {    
+				reject(new Error('Upload failed'));  
+			}  
+		});  
+	});
 }