node.js - Retrieve image from mongoDB -

-

मैं gridfs का उपयोग कर रहा हूं, इसलिए मेरे पास monDB में है: 

  fs.chunks: { "_ id": ObjectId ( "542e684a8a1cec178a172673"), "n": 1, "डाटा": BinData (0, "2N6DSSfbCN / LLacNDYrJUQDEZgimMUwFpQGoJP0RU19Bi4PM82DjrUnKhE / P9v7P8ZveD1oDpFBM0iml9NE3WQmAvYFoG + nhD73Jm4N9b4LpylaAN5Ef + gVdgGSTAfSUwOikXoVick5pSQCkRmTCU5NT9VVfjHdAx74 / ZhFRj + TIRjzlAhzkACBElzgMwGCo7tX + FYrpQLJ5KRmXiwFFwsNtHHzXiK1eu + CG1FumhGpA / qdG8CdDgD1xUHEcerMGO / eLGR9ML7ni / VjXxWzqp2j5DG2 / WuKNv7xd3Kz / vr0MctJhuaBIl35YrKhdLnzqDa0uDa6bm4jz + eNyAI2hQbayGo4kVPFe8W7wFpY7qfBvnB9kbocxfZSdADDUNwYaydpT8lIcKEN9XfQJOYZvHp0El ")," files_id ": ObjectId (" 542e684a8a1cec178a172671 ")} fs.files: {" _ id ": ObjectId (" 542e65378axdeckhb0 ")," uploadDate ": ISODate ("   
 मैं कर रहा हूं:  
   
  
  
  var फ़ाइल आईडी = मोंगोज़। प्रकार। ओब्जेक्ट आईडी (आईडी); Var ग्रिडस्टोर = नया ग्रिडस्टोर (डीबी, फ़ाइल आईडी, 'आर'); GridStore.open (फ़ंक्शन (गलती, ग्रिडस्टोर) {console.log (gridStore.uploadDate);});   
 मुझे मिला:  
  2012-11-01   
 लेकिन मुझे  चित्र प्रदर्शित करना < / Strong> मैंने ऐसा कुछ करने की कोशिश की लेकिन यह बिल्कुल स्पष्ट नहीं है:  
  app.get ('/ data /: imgtag', function (req, res) {fileRepository.getFile (function) (त्रुटि, डेटा) {res.writeHead ('200', {'सामग्री-प्रकार': 'छवि / png'}); res.end (डेटा, 'बाइनरी');}, req.params.imgtag);} ); app.listen (3000);   
 आपकी मदद के लिए धन्यवाद!   
 
 
 पहले, एक नज़र रखना पर । इसका दृष्टिकोण करने के दो तरीके हैं:  
 एक को  gridstore.read ()  को अपने  gridStore.open ()  फ़ंक्शन में कॉल करना है। आप कॉलबैक से प्रतिक्रिया के लिए डेटा भेज सकते हैं।  
  gridStore.read (फ़ंक्शन (गलती, डेटा) {res.write (डेटा); res.end ();});   
 कॉलबैक में डेटा पैरामीटर में आपकी फाइल होगी।  
 एक अन्य विकल्प  gridStore.stream ()  का उपयोग करना है और स्ट्रीम पाइप प्रतिक्रिया के लिए।  
  gridStore.stream ()। पाइप (Res);

Comments

Post a Comment

Popular posts from this blog

java - ImportError: No module named py4j.java_gateway -

-
I'm trying to call the Python using the Java program py4j . I've been installing the plug-in Eclipse and test name Piidvi project. I'm trying to execute the following part of the code found on py4j webpage: Import from py4j.java_gateway to JavaGateway, java_import gateway = JavaGateway () jvm = gateway.jvm java_import (jvm, '' Org.eclipse Kkorkrisorsej. * ") Vrkspes_rut = Jvankresourkesplginkgetvrkspas (). GetRoot (Gateway .help (workspace_root, '* Projects *') project_names = [project.getName () (for projects workpace_root.getProjects))] print (Projekt_nam) But I There is an error in import. I have checked that the P4JJ is present in the Jar Eclipse plugin directory. Can anyone help please? I had to install the py4j application
Read more

python - Receiving "KeyError" after decoding json result from url -

-
I am new to Python I am trying to parse JSON result from a URL. Basically, I was using the following: response = urllib.request.urlopen (url) json_obj = json.load (response) It should be a stroke "str 'not' bytes' in the lines of a given" JSON object, so after searching on the StackoverView Flo, I decode the response in this way: F = urllib.request.urlopen (Url) charset = f.info (). Get_param ('charset', 'utf8') data = f.read () decoded = json.loads (data.decode (charset)) If I print "decode" I is as follows: { 'link': { 'summary data': 'https: // localhost / piwebapi / streams / p0_7qHaW4UHU-RlCaz8tpasAAQAAAAU0hJTExNQU42NDIwXFNJTlVTT0lE / summary' 'value': 'https: // localhost / Piwebapi / streams / P0_7qHaW4UHU-RlCaz8tpasAAQAAAAU0hJTExNQU42NDIwXFNJTlVTT0lE / price ',' InterpolatedData ':' https: // localhost / Piwebapi / streams / P0_7qHaW4UHU-RlCaz8tpasAAQAAAAU0hJTE...
Read more

.net - Creating a new Queue Manager and Queue in Websphere MQ (using C#) -

-
"itemprop =" text "> I am writing applications that use WebSphere MQ to send messages. My unittests (for flow), I want to verify that I have put the correct message on the response queue. I am trying to figure out how to do this. My main obstacle is that I think it might be scary to clear the queue before running in my queue because the same queue can be used by other applications, I thought a decent solution would be a new line The manager will remove the queue for my solidarity and after using it. So my question is: Is it possible to use C # by using queue manager and queue? After the For future reference and future people, who want to make queues. I thought how to make and remove IBM MQ QE (not quenhers) with PCM messaging. It is not very simple, but it can be done. We have implemented it in a library and it is being used to create and delete commands before and after integration tests. The most important part of the code in this library is shown in the...
Read more