课程学习页面绘制

src/api/common.js

@@ -39,6 +39,29 @@ export const uploadFile = (file, data) => {
 	});
 };
 
+// 对象存储下载 /traoss/tras3/show/{文件ID} 
+export function downloadFile(id) {
+    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.downloadFile({  
+			url: `${baseUrl}/traoss/tras3/show/${id}`,  
+			header,  
+			success(result) {  
+				resolve(result)
+			},  
+			fail(error) {    
+				reject(new Error(error));  
+			}  
+		});  
+	});
+}
 
 // 对象存储预览 /traoss/tras3/show/{文件ID} 
 export function previewFile(id, responseType = 'arraybuffer') {
@@ -56,11 +79,7 @@ export function previewFile(id, responseType = 'arraybuffer') {
 			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)
+				resolve(result)
 			},  
 			fail(error) {    
 				reject(new Error(error));  
@@ -87,7 +106,7 @@ export function previewCacheThumbImage(id, width = 30, height = 30) {
 					let base64 = `data:image/png;base64,` + result.data.body
 					resolve(base64)
 				}else{
-					reject(new Error(result.data.message))
+					reject({error:result.data.message})
 				}
 			},  
 			fail(error) {