在平时的工作中，咱们须要通过接口的模式来调用具体的转换逻辑，同时开能够将文件转换写成服务的模式，将服务开启后传入参数或者地址即可间接调用逻辑转换，明天的文章次要解说如何将文件转换写成服务；
一起刮目相待吧！！！
文件服务器
Office 文件转 PDF 波及到文件的传输，所以思考用文件服务器来进行文件的传递，客户端如果有文件服务器的话， 同样在服务端也须要写一个文件服务器来返回转换实现的文件，以供客户端应用，文件服务器实现思路如下：
前端文件上传下载页面
<body> <form action="download" method="GET",enctype="multipart/form-data"> 要下载的文件: <input type="text" value="请上传文件" name="filename" /> <input type="submit" value="download"> </form> <form action="/file_server/cgi-bin/upload.py" method="POST" enctype="multipart/form-data"> 要上传的文件: <input type="file" name="filename" /> <input type="submit" value="upload"> </form>上传文件
上传文件 upload.py 局部代码如下：
import cgi, osform = cgi.FieldStorage()item = form["filename"]if item.filename: fn = os.path.basename(item.filename) open("/home/sxhlinux/data/" + fn, "wb").write(item.file.read()) msg = "File" + fn + ' upload successfully !'else: msg = 'no file is uploaded 'print("""\Content-type: text/html\n<html><head><meta charset="utf-8"><title>Hello world</title></head><body><h2>名称: %s</h2></body><html>""" % (msg,))下载文件
下载文件 download.py 局部代码如下:
form = cgi.FieldStorage()filename = form.getvalue('filename')dir_path = "F:/WorkSpace/FilesToPDF/file_server/tmp"target_path = dir_path + str(filename)if os.path.exists(target_path) == True: print("Content-Type: application/octet-stream") print('Content-Disposition: attachment; filename = "%s"' % filename) print(target_path) sys.stdout.flush() fo = open(target_path, "rb") sys.stdout.buffer.write(fo.read()) fo.close()else: print("""\ Content-type: text/html\n <html> <head> <meta charset="utf-8"> <title>File server</title> </head> <body> <h1> %s doesn't exist in the server: files in the server list below: </h1>""" % filename) for line in os.popen(filename): name = line.strip().split(' ', 8) type(name) if len(name) == 9: print(""" <form action="/cgi-bin/download.py" method="get">%s <input type="submit" name="filename" value="%s"> </form>""" % (line, name[8]))文件服务
文件服务入口 server.py 局部代码如下：
if __name__ == '__main__': try: handler = CGIHTTPRequestHandler handler.cgi_directories = ['/cgi-bin', '/htbin'] #port = int(sys.argv[1]) port = 8001 print('port is %d' % port) server = HTTPServer(('', port), handler) print('Welcome to my website !') server.serve_forever() except KeyboardInterrupt: print('^C received, shutting down server') server.socket.close() 以上服务启动后即可应用。
转换逻辑接口
转换接口应用了 Python Flask框架，在文件转换逻辑外面须要引入具体的转换逻辑，接口逻辑实现代码如下：
from flask import Flask, render_template,requestimport requestsimport configfrom requests import getimport files2pdf # 引入转换逻辑import os, shutilfrom flask import Flask, render_template, url_for, send_from_directory,json,make_response,jsonifyapp = Flask(__name__, static_folder='/static')app.config.from_object(config)app.config["SECRET_KEY"] = "123456"@app.route('/')def index(): return "Welcome to You,Please visit the url:http://IP:5000/upload_file?filePath=xxx.pptx"#pathname = ''@app.route('/upload_file', methods=['GET', 'POST'])def upload_file(): if request.method == 'POST' or request.method == 'GET': file_url = request.args.get('filePath', '') req = get(file_url) if req.status_code == 404: print("no file") return # 取正确的转换文件名称 filename = file_url.split('/')[-1] name = filename.split('?')[1] ppt_name = name.split('=')[-1] print(ppt_name) with open(ppt_name, "wb") as file: # get request # response = get(url) # write to file file.write(req.content) # 判断要转换的文件是否存在 if os.path.exists(ppt_name) and not os.path.exists(file_path + '/' + ppt_name): shutil.move(ppt_name, file_path) elif os.path.exists(ppt_name) and os.path.exists(file_path + '/' + ppt_name): print('file alreadly exists') os.remove(ppt_name) print("already deleted exists file") pdfConverter = files2pdf.PDFConverter(file_path + '/' + ppt_name) # 调用文件转换逻辑 # print("transform complete:"+pdfConverter) pdfConverter.run_conver() # file transform finshed --> Get file's name re_name = ppt_name.replace('.pptx', '.pdf') print('New name is:' + re_name) # /static/%E6%B0%B4%E9%92%A2%E9%9B%86%E5%9B%A2%E6%99%BA%E6%85%A7%E5%85%9A%E5%BB%BA%E5%9F%B9%E8%AE%AD%E8%B5%84%E6%96%990420%282%29.pdf re_url = 'IP:8001' # 文件服务地址 # urlfor = url_for('static', filename=re_name) return re_url + url_for('static', filename=re_name) #return render_template('result_link.html')if __name__ == '__main__': app.run(host='0.0.0.0', port=5000)调用
先启动 server.py 后再启动 flaskdemo.py 传入参数即可调用逻辑。也能够用 postman 调用
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