I have a class called Product which has a property called id of type long. Below is the class
public class Product {
private long id;
}
The value of id is beyond the value which javascript can handle. I realized this after seeing the below link
Parse json in javascript - long numbers get rounded
I dont want to declare the field as String in the domain class. But I want to say to RestEasy that it has to send the value as a string in the json response.
How can I do this? I dont want to use any third party api. Is it possible in RestEasy. I have gone through the documentation but did not find any such annotation or may be I did not go through the documentation properly.
Can anyone please help. Thanks all in advance.
If you are using Jackson as JSON Serializer you can extend the JacksonJsonProvider:
#Provider
public class JsonProvider extends org.codehaus.jackson.JacksonJsonProvider {
public JsonProvider() {
ObjectMapper objectMapper = locateMapper(ObjectMapper.class, MediaType.APPLICATION_JSON_TYPE);
objectMapper.configure(org.codehaus.jackson.JsonGenerator.Feature.WRITE_NUMBERS_AS_STRINGS, true);
}
}
If you are using Jettison you can register a custom XmlAdapter:
public class LongAdapter extends XmlAdapter<String, Long> {
#Override
public String marshal(Long id) throws Exception {
if (id == null) {
return "";
}
return id.toString();
}
#Override
public Long unmarshal(String id) throws Exception {
return Long.parseLong(id);
}
}
Related
I am using Wso2 IS 5.11.0, I have a requirement where I need to fetch the user attributes by calling web-service based.
Below is the sample attribute finder code:
public class CustomPIPAttributeFinder extends AbstractPIPAttributeFinder {
private static final String PIP_NAME = "CustomPIPAttributeFinder";
private static final Set<String> SUPPORTED_ATTRIBUTES;
private static final Log log = LogFactory.getLog(CustomPIPAttributeFinder.class);
static {
SUPPORTED_ATTRIBUTES = new HashSet<String>();
SUPPORTED_ATTRIBUTES.add(CustomPIPConstants.SAMPLE_ATTRIBUTE_ID);
SUPPORTED_ATTRIBUTES.add(CustomPIPConstants.SAMPLE_ATTRIBUTE_NAME);
SUPPORTED_ATTRIBUTES.add(CustomPIPConstants.SAMPLE_CATEGORY);
}
#Override
public Set<String> getAttributeValues(URI attributeType, URI attributeId, URI category, String issuer,
EvaluationCtx evaluationCtx) throws Exception {
//code
}
private String retrieveSampleName(String accessToken) {
String sampleName = null;
// TODO: Get the value of the sample name from the sampleID from the datasource
return sampleName;
}
/**
* Since we override the {#link #getAttributeValues(URI, URI, URI, String, EvaluationCtx)} this won't be called.
*/
#Override
public Set<String> getAttributeValues(String subject, String resource, String action, String environment,
String attributeId, String issuer) throws Exception {
throw new UnsupportedOperationException("Method unsupported in the context");
}
public void init(Properties properties) throws Exception {
}
public String getModuleName() {
return PIP_NAME;
}
public Set<String> getSupportedAttributes() {
return SUPPORTED_ATTRIBUTES;
}
}
In the sample code we can fetch only one attribute per request.But how can we return multiple attributes before executing policy or get multiple attributes in one request from custom attribute finder. Is there any way to achieve this flow.
As per above code request attribute find(returns only one) in the example it will increase the overhead as for each attribute lookup we are calling web-service every time as it'll increase overhead.
I would like to write web method(WebApi 2) as
GetArchiveDataForEngagements(collection of EngagementNumbers)
I have written code as
public async Task<IHttpActionResult> GetArchiveDataForEngagements(string[]
engagementNumber)
{
return Ok();
}
and using postman ,My input is like below
{
"engagementNumber":["one","two"]
}
I am getting "null" value for engagementNumber in web method.
Can anyone suggest , how can I achieve this?
You cannot pass data to a GET method using values in a body.
You could pass values as multiple query string values like this:
https://example.com/controller/GetArchiveDataForEngagements?engagementNumber=one&engagementNumber=two
You have not given enough routing information to make an accurate guess at the URL, but the query string part is the important part.
public class TEST
{
public string[] engagementNumber { get; set; }
}
[HttpPost]
[Route("test")]
public async Task<IHttpActionResult> GetArchiveDataForEngagements(TEST t)
{
return Ok();
}
Postman URL:
http:/localhost:8888/api/testCon/test
Postman Body: JSON(application/json)
{
"engagementNumber":["one","two"]
}
TestCon is the name of the controller.
NodeEntity:
#NodeEntity(label = "User")
public class UserNode {
#GraphId
private Long _gid;
#Index(unique = true, primary = true)
#Convert(ObjectIdConverter.class)
private ObjectId id;
}
Converter:
public class ObjectIdConverter implements AttributeConverter<ObjectId, String>{
#Override
public String toGraphProperty(ObjectId value) {
return ObjectIdUtils.compressed(value);
}
#Override
public ObjectId toEntityAttribute(String value) {
return ObjectIdUtils.uncompress(value);
}
}
Repository:
public interface UserNodeRepository extends GraphRepository<UserNode> {
#Query("MATCH (user:User) WHERE user.id IN {0} RETURN user")
List<UserNode> findByIdIn(List<ObjectId> ids);
}
UserNodeRepository#findByIdIn is custom query. but the request parameter directly convert to json without using ObjectIdConverter.
Log:
o.n.o.drivers.bolt.request.BoltRequest : Request: MATCH (user:User) WHERE user.id IN {0} RETURN user with params {0=[{timestamp=1500442853, machineIdentifier=11302907, processIdentifier=11906, counter=4709865, time=1500442853000, date=1500442853000, timeSecond=1500442853}, {timestamp=1500445335, machineIdentifier=11302907, processIdentifier=11906, counter=4709946, time=1500445335000, date=1500445335000, timeSecond=1500445335}, {timestamp=1500447522, machineIdentifier=11302907, processIdentifier=11906, counter=4710014, time=1500447522000, date=1500447522000, timeSecond=1500447522}, {timestamp=1500448399, machineIdentifier=11302907, processIdentifier=11906, counter=4710092, time=1500448399000, date=1500448399000, timeSecond=1500448399}]}
Is this the SDN expectation or what concepts have I lost?
This is not possible for finders with custom #Query. There is no way for OGM to know that your parameter relates to a property with #Convert annotation (the method name is not used at all). To solve this convert to your property type manually instead and use that as a parameter:
#Query("MATCH (user:User) WHERE user.id IN {0} RETURN user")
List<UserNode> findByIdIn(List<String> ids);
However this works fine for derived finders - OGM knows the field, and the #Convert annotation with the right converter, from the method name.
Example with single parameter:
List<UserNode> findById(ObjectId id);
Unfortunately there seems to be a bug for the IN operator and a collection parameter with:
// doesn't work
List<UserNode> findByIdIn(List<ObjectId> ids);
I have created a jira issue.
I'm relatively new to JavaEE and web services, however, I'm using netbeans to generate my client and webservice resources. I have a resource "CustomerData" that represents a mysql database table and a value "rewardsPoints" representing a column in that table, however, I am unable to update the value due to a ConstraintViolationException, specifically:
javax.validation.ConstraintViolationException: Bean Validation constraint(s) violated while executing Automatic Bean Validation on callback event:'preUpdate'. Please refer to embedded ConstraintViolations for details.
I'm not familiar with the 'preUpdate' callback event, is it something I need to override? I can't seem to figure out exactly why this exception is being thrown, but, as I said, i'm very new to web service programming. Here are my classes:
#Stateless
#Path("customers")
public class CustomerDataFacadeREST extends AbstractFacade<CustomerData> {
#PersistenceContext(unitName = "CustomerPortalPU")
private EntityManager em;
public CustomerDataFacadeREST() {
super(CustomerData.class);
}
#PUT
#Path("{id}")
#Consumes({"application/xml", "application/json"})
public void edit(#PathParam("id") Integer id, CustomerData entity) {
super.edit(entity);
}
#GET
#Path("{id}")
#Produces({"application/xml", "application/json"})
public CustomerData find(#PathParam("id") Integer id) {
return super.find(id);
}
#GET
#Path("addPoints/{id}/{amount}")
#Produces({"text/plain"})
public String addPoints(#PathParam("id") Integer id, #PathParam("amount") int amount) {
CustomerData customer = find(id);
customer.getRewardsPoints(customer.getRewardsPoints() + amount);
em.persist(customer);
edit(customer);
return customer.getRewardsPoints();
}
#Override
protected EntityManager getEntityManager() {
return em;
}
}
And the CustomerData entity class:
#Entity
#Table(name = "tbl_customer_data")
#XmlRootElement
public class CustomerData implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Basic(optional = false)
#Column(name = "id")
private Integer id;
#Basic(optional = false)
#NotNull
#Column(name = "rewards_points")
private int rewardsPoints;
public CustomerData(Integer id, int rewardsPoints) {
this.id = id;
this.rewardsPoints = rewardsPoints;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public int getRewardsPoints() {
return rewardsPoints;
}
public void setRewardsPoints(int rewardsPoints) {
this.rewardsPoints = rewardsPoints;
}
}
When I try to access the URI:
http://localhost:8080/CustomerPortal/ws/customers/addPoints/1/5
to add 5 points to user with id 1 i get an HTTP 500 error and in the glassfish logs it says
[2013-11-05T03:28:11.733-0500] [glassfish 4.0] [WARNING] [ejb.system_exception] [javax.enterprise.system.container.ejb.com.sun.ejb.containers] [tid: _ThreadID=21 _ThreadName=http-listener-1(3)] [timeMillis: 1383640091733] [levelValue: 900] [[
EJB5184:A system exception occurred during an invocation on EJB CustomerDataFacadeREST, method: public java.lang.String com.webservice.entities.CustomerDataFacadeREST.addPoints(java.lang.Integer,int)]]
[2013-11-05T03:28:11.741-0500] [glassfish 4.0] [WARNING] [] [javax.enterprise.web] [tid: _ThreadID=21 _ThreadName=http-listener-1(3)] [timeMillis: 1383640091741] [levelValue: 900] [[
StandardWrapperValve[com.webservice.entities.ApplicationConfig]: Servlet.service() for servlet com.webservice.entities.ApplicationConfig threw exception
javax.validation.ConstraintViolationException: Bean Validation constraint(s) violated while executing Automatic Bean Validation on callback event:'preUpdate'. Please refer to embedded ConstraintViolations for details.
Any resources, insight or information regarding this issue would be extremely helpful.
The exception has little to do with web services: it has to do with Bean Validation instead.
In this case, since the Validation fails inside method addPoints (look at the stack trace) the only line that can cause it is when persisting or editing an Entity of type CustomerData. The only constraint you have in that class is that rewardsPoints should not be null. So, that's the cause of the exception.
However there some things that won't work in addPoints method:
You should check that find() method doesn't return a null object.
customer.getRewardsPoints(customer.getRewardsPoints() + amount) never sets the property (does it compile?)
EntityManager.persist() throws exception if the entity already exists. You probably want to remove that line if you only want to edit (update) the entity.
Note: I am not sure that the code you have posted is really compiling and causing that exception. That's probably caused by another version.
I am using Jersey/Java to develop my REST services. I need to return an XML representation for my CarStore :
#XmlRootElement
public class CarStore {
private List<Car> cars;
public List<Car> getCars() {
return cars;
}
public void setCars(List<Car> cars) {
this.cars = cars;
}
Here is my Car object :
#XmlRootElement
> public class Car {
private String carName;
private Specs carSpecs;
private Category carCategory;
public String getCarName() {
return carName;
}
public void setCarName(String carName) {
this.carName = carName;
}
public Specs getCarSpecs() {
return carSpecs;
}
public void setCarSpecs(Specs carSpecs) {
this.carSpecs = carSpecs;
}
public Category getCarCategory() {
return carCategory;
}
public void setCarCategory(Category carCategory) {
this.carCategory = carCategory;
}
}
Specs and Category are enums like this :
#XmlRootElement
> public enum Category {
SEDANS, COMPACTS, WAGONS, HATCH_HYBRIDS, SUVS, CONVERTIBLES, COMPARABLE;
}
My resource class is :
#GET
#Produces({MediaType.APPLICATION_XML})
public CarStore getCars()
{
return CarStoreModel.instance.getAllCars();
}
My jersey client is :
WebResource service = client.resource(getBaseURI());
System.out.println(service.path("rest").path("cars").accept(
MediaType.APPLICATION_XML).get(String.class));
I am getting Http 204 error on access alongwith client exception :
com.sun.jersey.api.client.UniformInterfaceException
Any ideas ? Thanks !
EDIT : I have yet not developed the model class...I just initialized some car objects as dummy data and put them in carstore. Showing all the classes here would be very clumsy.
BTW, sorry for writing 204 Error..it is just that I am getting an Exception that led me think so.
I'm guessing the exception is not related to the response code (204) because 204 is a success condition that indicates "No Content."
I believe you are getting a UniformInterfaceException because your getCars() function is not returning an HTTP response body. The root problem is that your Car List isn't being converted into XML by JAXB because it is missing the #XmlElement annotation.
Your getCars() function should be:
#GET
#Produces(MediaType.APPLICATION_XML)
public CarStore getCars() {
// myCarStore is an instance of CarStore
return myCarStore.getCars();
}
and your Car List in CarStore should be defined:
#XmlElement(name="car")
private List<Car> cars;
Is what you're returning in xml format? I'm not sure what getAllCars does but you can use something like Fiddler to help you view the traffic and see what is being returned to the client and whether its in proper format etc
In your client code, is the resource path correct? Make sure getBaseURI is returning a value.
Perhaps try:
Client client = new Client();
WebResource resource = client.resource(getBaseURI());
CarStore carStore = resource.path("/rest/cars").accept(MediaType.APPLICATION_XML).get(CarStore.class);
Aren't you missing a #Path annotation on your resource class?
#GET
#Path("cars")
#Produces({ MediaType.APPLICATION_XML })
public CarStore getCars() {
return CarStoreModel.instance.getAllCars();
}
Check if the URL at which your REST WS is mounted the one you expect by putting a breakpoint in your getCars() method (or putting a System.out.println) to make sure it actually gets called.
It seems there is a hard coded check in Jersey to throw a UniformInterfaceException when a HTTP 204 is returned.
The best solution will be to 'fix' the rest server so it never returns a null. e.g. return an Empty list or a Class with not values set.
Else you will need to catch UniformInterfaceException which is really ugly
if (getStatus() == 204) {
throw new UniformInterfaceException(this);
}
More info here :
http://grepcode.com/file/repo1.maven.org/maven2/com.sun.jersey/jersey-client/1.17.1/com/sun/jersey/api/client/ClientResponse.java#ClientResponse.getEntity%28java.lang.Class%2Cjava.lang.reflect.Type%29