How to get JSON column "Title" in Java

Question

I get this JSON returned and i want to select the metadata "Title" so i can change it to something else.

{
"d": {
    "results": [
        {
            "__metadata": {
                "id": "a8d82500-b17d-43fc-9d03-ee95c498d374",
                "uri": "http:/industrial-ex/sites/tifdemo/_api/Web/Lists(guid'64623cd3-3c4b-4e79-9e94-3e69059903f2')/Items(6)",
                "etag": "\"33\"",
                "type": "SP.Data.EnoviaItem"
            },
            "FirstUniqueAncestorSecurableObject": {
                "__deferred": {
                    "uri": "http:/industrial-ex/sites/tifdemo/_api/Web/Lists(guid'64623cd3-3c4b-4e79-9e94-3e69059903f2')/Items(6)/FirstUniqueAncestorSecurableObject"
                }
            },
            "RoleAssignments": {
                "__deferred": {
                    "uri": "http:/industrial-ex/sites/tifdemo/_api/Web/Lists(guid'64623cd3-3c4b-4e79-9e94-3e69059903f2')/Items(6)/RoleAssignments"
                }
            },
            "AttachmentFiles": {
                "__deferred": {
                    "uri": "http:/industrial-ex/sites/tifdemo/_api/Web/Lists(guid'64623cd3-3c4b-4e79-9e94-3e69059903f2')/Items(6)/AttachmentFiles"
                }
            },
            "ContentType": {
                "__deferred": {
                    "uri": "http:/industrial-ex/sites/tifdemo/_api/Web/Lists(guid'64623cd3-3c4b-4e79-9e94-3e69059903f2')/Items(6)/ContentType"
                }
            },
            "FieldValuesAsHtml": {
                "__deferred": {
                    "uri": "http:/industrial-ex/sites/tifdemo/_api/Web/Lists(guid'64623cd3-3c4b-4e79-9e94-3e69059903f2')/Items(6)/FieldValuesAsHtml"
                }
            },
            "FieldValuesAsText": {
                "__deferred": {
                    "uri": "http:/industrial-ex/sites/tifdemo/_api/Web/Lists(guid'64623cd3-3c4b-4e79-9e94-3e69059903f2')/Items(6)/FieldValuesAsText"
                }
            },
            "FieldValuesForEdit": {
                "__deferred": {
                    "uri": "http:/industrial-ex/sites/tifdemo/_api/Web/Lists(guid'64623cd3-3c4b-4e79-9e94-3e69059903f2')/Items(6)/FieldValuesForEdit"
                }
            },
            "File": {
                "__deferred": {
                    "uri": "http:/industrial-ex/sites/tifdemo/_api/Web/Lists(guid'64623cd3-3c4b-4e79-9e94-3e69059903f2')/Items(6)/File"
                }
            },
            "Folder": {
                "__deferred": {
                    "uri": "http:/industrial-ex/sites/tifdemo/_api/Web/Lists(guid'64623cd3-3c4b-4e79-9e94-3e69059903f2')/Items(6)/Folder"
                }
            },
            "ParentList": {
                "__deferred": {
                    "uri": "http:/industrial-ex/sites/tifdemo/_api/Web/Lists(guid'64623cd3-3c4b-4e79-9e94-3e69059903f2')/Items(6)/ParentList"
                }
            },
            "FileSystemObjectType": 0,
            "Id": 6,
            "ID": 6,
            "ContentTypeId": "0x010100B54C4134C49AE4429841FEE843FEF1D0",
            "Created": "2015-02-11T08:04:27Z",
            "AuthorId": 1073741823,
            "Modified": "2015-02-11T16:37:09Z",
            "EditorId": 1,
            "OData__CopySource": null,
            "CheckoutUserId": null,
            "OData__UIVersionString": "1.0",
            "GUID": "5b5f67c9-5ad6-499c-8799-f91baa7a31df",
            "Title": "test"
        }
    ]
}
}

Here is the Java code i got right now to GET the JSON format.

String url = "http://industrial-ex/sites/tifdemo/_api/web/lists/getbytitle('enovia')/Items";
GetMethod get = new GetMethod(url);
get.setRequestHeader("Accept", "application/json; odata=verbose;");

authentication.getHttpClient().executeMethod(get);
JsonParser p = new JsonParser();
JsonElement jsonElement = p.parse(get.getResponseBodyAsString());
JsonObject asJsonObject = jsonElement.getAsJsonObject();
System.out.println("JSON OBJECT: " + asJsonObject);
String title = asJsonObject.get("d").toString();
System.out.println("---RESULT---: " + title);</code>

Answer 1

I'm guessing you are using Gson. If so, try this:

String title = asJsonObject.get("d").getAsJsonObject().get("results").getAsJsonArray().get(0).getAsJsonObject().get("Title").getAsString();

It's just about following the layout. You can also do ?$select=Title&$top=1 in your query if you simply want the first items Title as you hint at (even though it sounds odd).

Also note it is probably better to deserialize the result into classes.

EDIT:
Here is an example with classes and deserializing:

public class Result<T> {
    public T d;
}

public class ResultList<T> {
    public List<T> results;
}

public class Item {
    public String Title;
}

...

Gson gson = new Gson();
Result<ResultList<Item>> result = gson.fromJson(yourJsonString, new TypeToken<Result<ResultList<Item>>>(){}.getType());
System.out.println(result.d.results.get(0).Title);

Answer 2

This is how i make a POST to document library right now..

documentLibrary = sharepoint server url to document library
http://industrial-ex/sites/tifdemo/enovia/

enoviaDocument = local path to a file
D:\tif-destination

if (enoviaDocument.isFile()) { FileInputStream fileInputStream = new FileInputStream(enoviaDocument); PutMethod method = new PutMethod(documentLibrary + enoviaDocument.getName()); RequestEntity requestEntity = new InputStreamRequestEntity(fileInputStream); method.setRequestEntity(requestEntity); Constant.getHttpclient().executeMethod(method); System.out.println("STATUS CODE: " + method.getStatusCode() + " " + "STATUS TEXT: " + method.getStatusText()); }