Demande HTTP PATCH à l'API TEST REST de l'application Java obtenant une erreur 400 (mauvaise requête)

Question

J'essaie de faire une requête HTTP PATCH via le code java vers l'API TFS REST. Mais je reçois le code de demande 400 mauvais. Mes méthodes POST et GET fonctionnent à partir de Java.

je le code suivant:

public static void patchCenas() throws MalformedURLException, IOException{ 
    URL url = new URL("http://servername:8080/tfs/DefaultCollection/Testing%20Project/_apis/wit/workitems/$Bug?api-version=1.0"); 
    HttpURLConnection connection = (HttpURLConnection) url.openConnection(); 
    connection.setConnectTimeout(15000);//15 secs 
    connection.setReadTimeout(15000);//15 secs 

    connection.setRequestProperty("X-HTTP-Method-Override", "PATCH"); 
    connection.setRequestMethod("POST"); 
    connection.setDoOutput(true); 
    connection.setRequestProperty("Content-Type", "{\"Content-Type\":\"application/json-patch+json\"}"); 

    OutputStreamWriter out = new OutputStreamWriter(connection.getOutputStream()); 
    out.write(
      "[" + 
        "{"+ 
         "\"op\":\"add\"," + 
         "\"path\":\"/fields/System.Title\"," + 
         "\"value\":\"Bug with PATCH via java (Test)\""+ 
        "}"+ 
      "]"); 
    out.flush(); 
    out.close(); 

    int res = connection.getResponseCode(); 
    System.out.println(connection.getResponseMessage()); 
    System.out.println(res); 

    BufferedReader br = new BufferedReader(new InputStreamReader(((HttpURLConnection) url.openConnection()).getInputStream(), Charset.forName("UTF-8"))); 
    //InputStream is = connection.getInputStream(); 
    //BufferedReader br = new BufferedReader(new InputStreamReader(is)); 
    String line = null; 
    while((line = br.readLine()) != null) { 
     System.out.println(line); 
    } 
    connection.disconnect(); 
} 

Messages:

Message de réponse: Bad Request

Code de réponse: 400

Sortie ligne

:

{ 
    "fields": { 
     "System.WorkItemType": "Bug", 
     "System.AreaPath": "Testing Project", 
     "System.TeamProject": "Testing Project", 
     "System.IterationPath": "Testing Project", 
     "System.State": "New", 
     "System.Reason": "New defect reported", 
     "Microsoft.VSTS.Common.StateChangeDate": "1753-01-01T00:00:00Z", 
     "System.ChangedBy": "name>", 
     "System.CreatedBy": "name>", 
     "Microsoft.VSTS.Common.Priority": 2, 
     "Microsoft.VSTS.Common.Severity": "3 - Medium", 
     "Microsoft.VSTS.Common.ValueArea": "Business" 
    }, 
    "_links": { 
     "workItemType": { 
     "href": "http://servername:8080/tfs/DefaultCollection/xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxx/_apis/wit/workItemTypes/Bug" 
     }, 
     "fields": { 
     "href": "http://servername:8080/tfs/DefaultCollection/_apis/wit/fields" 
     } 
    }, 
    "url": "http://servername:8080/tfs/DefaultCollection/_apis/wit/workItems" 
} 

Quelque chose ne va pas dans mon code?

Answer 1

Je teste l'extrait de code que vous avez posté ci-dessus. Le type de contenu n'est pas correct. Changer à:

connection.setRequestProperty("Content-Type", "application/json-patch+json"); 

Il n'a pas besoin {}.