I am trying to pass an array of long with Jersey :
In the client side i have trying something like that :
#GET
#Consume("text/plain")
#Produces("application/xml)
Response getAllAgentsById(#params("listOfId") List<Long> listOfId);
Is there a way to realize something like that?
Thanks in advance!
If you want to stick to "application/xml" format and avoid JSON format, you should wrap this data into a JAXB annotated object, so that Jersey can use the built-in MessageBodyWriter / MessageBodyReader.
#XmlRootElement
#XmlAccessorType(XmlAccessType.FIELD)
public ListOfIds{
private List<Long> ids;
public ListOfIds() {}
public ListOfIds(List<Long> ids) {
this.ids= ids;
}
public List<Long> getIds() {
return ids;
}
}
On the client side (using Jersey client)
// get your list of Long
List<Long> list = computeListOfIds();
// wrap it in your object
ListOfIds idList = new ListOfIds(list);
Builder builder = webResource.path("/agentsIds/").type("application/xml").accept("application/xml");
ClientResponse response = builder.post(ClientResponse.class, idList);
If you just need to pass array of long its possible without any problem. But I will probably pass the long as comma delimited string. (123,233,2344,232) and then split the string and convert in to long.
If not, I suggest you use Json Serialization. If you are using java client, then google gson is a good option. In client side, I will encode my list:
List<Long> test = new ArrayList<Long>();
for (long i = 0; i < 10; i++) {
test.add(i);
}
String s = new Gson().toJson(test);
And pass this string as post param. In the server side, I will decode like this.
Type collectionType = new TypeToken<List<Long>>() {
} // end new
.getType();
List<Long> longList = new Gson().fromJson(longString,
collectionType);
Related
I have set which contains string ["a" , "b" , "c"] , I want to POST json data like (comma seperated and one string)
Here is
JSON
{"view" : "a,b,c",
"fruits" : "apple"}
to the endpoing using Resttemplate postForObject method? I have used GSON but that is not working in my project. Are there any other alternatives?
Here is my code
private run(set<data> datas) {
Set<string> stack = new hashset<>();
iterator<data> itr = datas.iterator();
while (itr.hasnext()) {
data macro = itr.next();
if (//some condition) {
stack.add(macro);
}
}
}
}
Resttemplate.getmessageconverters().add(stringconvertor);
String result = resttemplate.postforobject(endpoint, request, String.class);
}
If the data is in a specific class like format, you could go with the POJO approach that is encouraged by Spring Boot. But looking at your example, it seems like you want to achieve a one time JSON Object response.
import org.json.simple.JSONObject;
public static void run(set<data> datas, string endpoint){
// build your 'stack' set
String joined = String.join(",", stack);
JSONObject obj=new JSONObject();
obj.put("view",joined);
obj.put("fruits","apple");
//return the jsonObject as the response to your entrypoint using your method
}
You could also try the following if you use #ResponseBody annotation in Spring Boot that will convert the Response Body to the appropriate (JSON) format.
HashMap<String, String> map = new HashMap<>();
map.put("view", joined);
map.put("fruits", "apple");
return map;
I am using resteasy to send key/value pairs in between some restful web-services.
to post a list of these pairs i use this snippet
List<Pair> pairs = new ArrayList<>();
pairs.add(new Pair("name", "Arnold"));
pairs.add(new Pair("age", "20"));
ResteasyClient resteasyClient = getClient();
ResteasyWebTarget target = resteasyClient.target(targetURI);
Invocation.Builder request = target.request();
request.post(Entity.entity(entity, MediaType.APPLICATION_JSON_TYPE));
Pair is just an unannotated Class with
public String key,
public String value
default constructor
(key,value) constructor
The target resource an receive this via:
#POST
#Path("/metadata")
#Consumes(MediaType.APPLICATION_JSON)
public Response postMetadata(List<Pair> properties) {...
the jax-rs resource can read the List correctly.
Now the other way is the Problem:
The Retrieval Resource is defined as:
#GET
#Path("/getUrl.../{id}")
#Produces(MediaType.APPLICATION_JSON)
public Response getMetadata(#PathParam("id") String id) {
data_from_hibernate = em.find(id);
...
List<Pair> properties = new ArrayList<>();
//fill List from data
return Response.ok().entity(properties).build();
Client side is:
Response response = request.get("http://getUrl.../"+id);
List<Pair> properties = response.readEntity(List.class);
logger.info("got properties != null? " +(properties!=null));
logger.info("size: "+properties.size());
logger.info("[0]" + properties.get(0));
logger.info("type: "+properties.get(0).getClass().getName());
The List is not null;
size is correct;
get(0) does output in a strange format: [0]{"name": "value"};
this is followed by the strange format's reason: an Exception tells me that:
java.util.LinkedHashMap cannot be cast to Pair
How is properties a LinkedHashMap at this point, or rather: a List of LinkedHashMaps?
Without type information (when you use readEntity), Jackson (the underlying deserializer) will convert arbitrary JSON objects to LinkedHashMap.
When using readEntity, you provide generic type information by using GenericType.
List<Pair> properties = response.readEntity(new GenericType<List<Pair>>(){});
I am trying to read and write a Json object to my database and I'm not getting how to convert the string you get from the database to a string and how I can use it later tp write back the changed list into my database again.
So when I'm asking the database for the field I want, I get this string back:
["[\"pw1\",\"pw2\",\"pw3\"]"]
Then I go and create an object of my class LastPasswords
List<String> passwordList = (List<String>) controllerServlet.getMacroDatabaseManager().executeNativeQuery(queryGet);
LastPasswords lastPasswords = new LastPasswords(passwordList);
Gson gson = new Gson();
String Json = gson.toJson(lastPasswords);
Here is the LastPasswords class
public class LastPasswords {
private List<String> passwords;
public LastPasswords(List<String> passwords) {
this.passwords = passwords;
}
public List<String> getPasswords(){
return passwords;
}
public void setPasswords(List<String> passwords){
this.passwords = passwords;
}
}
Then when I have this json string I try to get it as a list but I don't get the list.
lastPasswords.setPasswords((List<String>) gson.fromJson(banana, LastPasswords.class));
passwordList = lastPasswords.getPasswords();
Thanks for helping.
You can use com.google.gson.reflect.TypeToken.TypeToken to define return type of fromJson method.
Then, àter you have the list, you can create a new LastPasswords to use.
String json = "[\"pw1\",\"pw2\",\"pw3\"]";
Gson gson = new Gson();
List<String> list = gson.fromJson(json, new TypeToken<List<String>>() {}.getType());
System.out.println(list.size());
System.out.println(list);
Output:
3
[pw1, pw2, pw3]
You may use TypeToken to load the json string into a custom object.
String json = "[\"pw1\",\"pw2\",\"pw3\"]";
List<String> list = gson.fromJson(json, new TypeToken<List<String>>(){}.getType());
Or for an list of list of String
String json = "[\"[\"pw1\",\"pw2\",\"pw3\"]\"]";
List<List<String>> list = gson.fromJson(json, new TypeToken<List<List<String>>>(){}.getType());
list.get(0).get(0) == "pw1"
I would like to recommend to keep a Password class instead of keeping a ListPassword class.
Let us assume, you've a Password class like this.
public class Password {
public String password;
// Getter and setter
}
Now when you read the json string using gson, you might have to do this.
Password[] passwordArray = gson.fromJson(json, Password[].class);
This will map the json string into an array of Password. Then you might consider populating them in a list if you like.
List<Password> passwordList = Arrays.asList(passwordArray);
I'm working with wordpress post metas and rest api, i've exposed to rest a meta field called "picture_collection" wich store data as an array of integers where every number represents the ID of an attachment.
I've then modified the response when interrogating the api to give me a list of links instead of the attachment ids, like this:
function get_pic_coll ($object, $field_name, $request) {
include_once dirname(__FILE__) . '/attach_coll.php';
$pic_coll = get_post_meta ($object['id'], $field_name, true);
$json_coll = array();
if($pic_coll != null || !empty($pic_coll)){
foreach ($pic_coll as $pic){
$media_id = $pic;
$link_med = wp_get_attachment_image_src($media_id, 'medium');
$link_full = wp_get_attachment_image_src($media_id, 'full');
$medium_size = $link_med[0];
$full_size = $link_full[0];
$obj = new attach_coll($media_id, $medium_size, $full_size);
$element = $obj->return_coll_object();
$json_coll[] = $element;
}
return $json_coll;
}
}
while the attach_coll object is:
class attach_coll{
public function __construct($media_id, $medium_url, $orig_url){
$this->attach_id = $media_id;
$this->medium_size_pic = $medium_url;
$this->full_size_pic = $orig_url;
}
private $attach_id;
private $medium_size_pic;
private $full_size_pic;
public function get_media_id(){
return $this->attach_id;
}
public function get_medium_pic(){
return $this->medium_size_pic;
}
public function get_orig_pic(){
return $this->full_size_pic;
}
public function return_coll_object(){
$ret_coll = array(
"ID" => $this->get_media_id(),
"medium" => $this->get_medium_pic(),
"full" => $this->get_orig_pic()
);
return $ret_coll;
}
}
Java side the things goes like this:
1)the user make a picture and upload her, he receive in exchange the ID of the attachment that is stored inside an Integers ArrayList.
2)when he has done the program update the post_meta passing to the api the entire list.
3)the program receive the response as a json containing the whole post with my custom field, it looks like this:
{...
"id":"someValue",
"title":"myTitle",
"pic_collection":[ {'ID':'picID','mediumSizePic':'someUrl', 'FullSizePic':'SomeOtherUrl},{...}],
The php code works well as i see from the ResponseBody the json i was expecting, the problem is that i'm getting an error 'gson expected a Integer and found an Object' that is logical because the pojo is defined like:
#SerializedName("pic_collection")
private List<Integer> idList = new ArrayList<Integer>();
public void setList(List<Integer> list){
this.idList=list;
}
I tried to change my list to:
List<PicCollection> picList = new ArrayList<PicCollection>();
public class PicCollection{
#SerializedName("ID")
private int picId;
#SerializedName("medium_size")
private String medSizeUrl;
#SerializedName("full_size")
private String fullSizeUrl;
Getters and Setters
}
But that just complicated everything up and didn't resolved the problem as i'm still having a the same gson error 'ID expecting an int but found an object' and no links returned at all.
A glimpse on the code to set the id's:
iterator=idList.iterator;
while(iterator.hasNext()){
FotoCollection fc = new FotoCollection();
fc.ID = iterator.next
What can i do to resove the problem? I need a custom converter?
I just created 2 objects:
One for the request and one for the response.
I have a POJO Artwork. I'm retrieving a List of those objects from a RESTful webservice in the HTTP response body in JSON format. I'm trying to write a Rest Assured-based test that would analyze the returned list. The code looks like this:
Response response = get("/artwork");
List returnedArtworks = response.getBody().as(List.class)
The problem is, I can't get Rest Assured to parse the returned JSON as List<Artwork>. Instead, I get a List<LinkedHashMap>. The map has a proper structure, i.e. could be mapped by Jackson to Artwork object, but I'd like to avoid mapping it manually.
JSON mappings in my model are OK, because when I map single object like this:
Artwork returnedArtwork = response.getBody().as(Artwork.class);
it works fine.
Is it possible to get returnedArtworks as List<Artwork>?
You can do this:
List<Artwork> returnedArtworks = Arrays.asList(response.getBody().as(Artwork[].class));
The trick is to deserialize JSON to an array of objects (because there is no difference between the JSON string of an array or a list), then convert the array to a list.
this solution works for version 3.0.2 (io.restassured):
JsonPath jsonPath = RestAssured.given()
.when()
.get("/order")
.then()
.assertThat()
.statusCode(Response.Status.OK.getStatusCode())
.assertThat()
.extract().body().jsonPath();
List<Order> orders = jsonPath.getList("", Order.class);
This will extract the objects for a structure like this:
public class Order {
private String id;
public String getId(){
return id; }
public void setId(String id){
this.id = id;
}
}
with the given json:
[
{ "id" : "5" },
{ "id" : "6" }
]
By using Google's Gson library you can easily parse it to List<Artwork>. Try below code
Gson gson = new Gson();
List<Artwork> returnedArtworks = gson.fromJson(jsonStr, new TypeToken<List<Artwork>>(){}.getType());
//* where jsonStr is the response string(Json) receiving from your Restful webservice
Rest-assured provide an as(java.lang.reflect.Type) next to the version expecting a Class used in the question.
java.lang.reflect.Type type; //TODO defines the type.
Response response = get("/artwork");
List<Artwork> returnedArtworks = response.getBody().as(type)
In my opinion the way the type variable depends from the serialization lib that is used.
If using Gson, as pointed out by Purushotham's answer, TypeToken can be used. I prefer using it directly in rest-assured:
Type type = new TypeToken<List<Artwork>>(){}.getType();
Response response = get("/artwork");
List<Artwork> returnedArtworks = response.getBody().as(type)
When using Jackson, the solution is to use the TypeFactory (javadoc, source) to tell to which type it should be de-serialized:
Type type = TypeFactory.defaultInstance().constructCollectionLikeType(ArrayList.class, Artwork.class);
Response response = get("/artwork");
List<Artwork> returnedArtworks = response.getBody().as(type)
With REST assured 3.0.2 you can simply check if content exists in the array
when().get("/artwork").then().body("artworks", hasItem("some art");
//or check multiple values in array
when().get("/artwork").then().body("artworks", hasItems("some art", "other art");
This way you will avoid complexity in your code by converting JSON to list more examples how to check response content can be found link