增加显示图片的api

DAPlatform/views/uploadDownload.py

 import json
 import os
 import time
+import traceback
 from datetime import datetime
 
 import xlrd
@@ -10,13 +11,13 @@ from xlrd import xldate_as_tuple
 
 from dao import mongodbApi
 from support import basedir
-from flask import jsonify, request, send_file
+from flask import jsonify, request, send_file, Response
 
 from views.textAnnotation import collectionTest
 
 uploadDownload = Blueprint("uploadDownload", __name__, url_prefix="/api/files")
 UPLOAD_FOLDER = 'upload'  # 用于保存上传文件的文件夹名称
-ALLOWED_EXTENSIONS = {'txt', 'xls',  'xlsx', 'png', 'jpg', 'bmp', 'gif'}  # 允许上传的文件格式
+ALLOWED_EXTENSIONS = {'txt', 'xls', 'xlsx', 'png', 'jpg', 'bmp', 'gif'}  # 允许上传的文件格式
 
 
 # 用于判断文件后缀
@@ -32,21 +33,23 @@ def upload():
         os.makedirs(file_dir)
     f = request.files['file']  # 从表单的file字段获取文件，file为该表单的name值
     if f and allowed_file(f.filename):  # 判断是否是允许上传的文件类型
-        ext = os.path.splitext(f.filename)[1]# 获取文件后缀
+        ext = os.path.splitext(f.filename)[1]  # 获取文件后缀
         unix_time = int(time.time())
-        new_filename = str(unix_time)+ext  # 修改了上传的文件名
+        new_filename = str(unix_time) + ext  # 修改了上传的文件名
         f.save(os.path.join(file_dir, new_filename))  # 保存文件到upload目录
         return jsonify({"code": 1, "msg": "succeed ", "data": new_filename})
     else:
         return jsonify({"code": 0, "errmsg": u"failed"})
 
+
 # 下载接口
 @uploadDownload.route('/download/<fileName>', methods=['GET'])
 def download(fileName):
     file_dir = os.path.join(basedir, UPLOAD_FOLDER, fileName)
     return send_file(file_dir, as_attachment=True, attachment_filename=fileName)
 
-#删除文档
+
+# 删除文档
 @uploadDownload.route('/delFile', methods=['POST'])
 def delFile():
     data = request.get_json(silent=True)
@@ -101,6 +104,28 @@ def read_excel(path):
     return json.dumps(data, ensure_ascii=False)
 
 
+# 显示图片url
+@uploadDownload.route('/getImage/<imageName>', methods=["GET"])
+def get_image_file(imageName):
+    try:
+        file_dir = os.path.join(basedir, UPLOAD_FOLDER, imageName)
+        if not os.path.exists(file_dir):
+            return jsonify({"code": 0, "errmsg": u"the image '{}' doesn't exit!".format(imageName)})
+        mdict = {
+            'jpeg': 'image/jpeg',
+            'jpg': 'image/jpeg',
+            'png': 'image/png',
+            'gif': 'image/gif'
+        }
+        mine = mdict[imageName.split('.')[1]]
+        with open(file_dir, 'rb') as f:
+            image = f.read()
+        return Response(image, mimetype=mine)
+    except Exception as e:
+        traceback.print_exc()
+        return jsonify({"code": 0, "errmsg": repr(e)})
+
+
 # documentId获取文本内容
 @uploadDownload.route('/getFileContent', methods=['POST'])
 def getFileContent():