Im trying to access some list items from a json response using retrofit but cant seem to be able to access using get method. The ListQuotes seems to be saying null
#JsonPropertyOrder({
"page",
"last_page",
"quotes"
})
public class ListQuoteResponse {
#JsonProperty("quotes")
private List<Quote> quotes = null;
#JsonIgnore
private Map<String, Object> additionalProperties = new HashMap<String, Object>();
/**
* No args constructor for use in serialization
*
*/
public ListQuoteResponse() {
}
#JsonProperty("quotes")
public List<Quote> getQuotes() {
return quotes;
}
#JsonProperty("quotes")
public void setQuotes(List<Quote> quotes) {
this.quotes = quotes;
}
#JsonAnyGetter
public Map<String, Object> getAdditionalProperties() {
return this.additionalProperties;
}
#JsonAnySetter
public void setAdditionalProperty(String name, Object value) {
this.additionalProperties.put(name, value);
}
}
But when I open the Quote class I am unable to access any of the properties
public class Quote {
#JsonProperty("id")
private Integer id;
#JsonProperty("dialogue")
private Boolean dialogue;
#JsonIgnore
private Map<String, Object> additionalProperties = new HashMap<String, Object>();
/**
* No args constructor for use in serialization
*
*/
public Quote() {
}
#JsonProperty("id")
public Integer getId() {
return id;
}
#JsonProperty("id")
public void setId(Integer id) {
this.id = id;
}
#JsonProperty("dialogue")
public Boolean getDialogue() {
return dialogue;
}
#JsonProperty("dialogue")
public void setDialogue(Boolean dialogue) {
this.dialogue = dialogue;
}
I tried using
listQuoteBodyResponse.body().getQuotes() but that only returned random numbers and when I tried using the Quote class for the response directly like
QuoteResponse.body.getDialogue() its just returning null
Related
I'm trying to use #Consumed on jpa entity with camel.
this is my route :
<route id="incomingFileHandlerRoute">
<from
uri="jpa://com.menora.inbal.incomingFileHandler.Jpa.model.MessageToDB?consumer.nativeQuery=select
* from file_message where mstatus = 'TODO'&consumer.delay=5000&consumeDelete=false&consumeLockEntity=true&consumer.SkipLockedEntity=true" />
<to uri="bean:incomingFileHandler" />
</route>
and my entity:
#Entity
#Table(name = "file_message")
public class MessageToDB implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
#Id
private String uuid;
private String fileName;
private String body;
private String mstatus;
#Temporal(TemporalType.TIMESTAMP)
private Date mtimestamp;
#Consumed
public void updateMstatus() {
setMstatus(MessageStatus.DONE.name());
}
public String getUuid() {
return uuid;
}
public void setUuid(String uuid) {
this.uuid = uuid;
}
public String getFileName() {
return fileName;
}
public void setFileName(String fileName) {
this.fileName = fileName;
}
public String getBody() {
return body;
}
public void setBody(String body) {
this.body = body;
}
public String getMstatus() {
return mstatus;
}
public void setMstatus(String mstatus) {
this.mstatus = mstatus;
}
public Date getMtimestamp() {
return mtimestamp;
}
public void setMtimestamp(Date mtimestamp) {
this.mtimestamp = mtimestamp;
}
}
I do get to incomingFileHandler bean with results from db but I do not get to the Consumed method updateMstatus . The incomingFileHandler bean is getting called continuously as always there are results from db
I have a similar implementation with camel-jpa and annotations #Consumed and #PreConsumed in the entity but none of these methods is called.
I look the camel-jpa source code and found this in JpaConsumer.java:
protected DeleteHandler<Object> createPreDeleteHandler() {
// Look for #PreConsumed to allow custom callback before the Entity has been consumed
final Class<?> entityType = getEndpoint().getEntityType();
if (entityType != null) {
// Inspect the method(s) annotated with #PreConsumed
if entityType is null the entity class inst inspect the method annotated with #Consumed and #PreConsumed.
Solution: add entityType=com.xx.yy.MessageToDB to your URI to set Endpoint Entity type.
I am trying submit json data to a Spring MVC controller mapped with a model. Instead of getting the json values, the values of the fields of the model are all NULL.
IDE debugger:
Chrome:
Exception:
org.springframework.dao.InvalidDataAccessApiUsageException: The given id must not be null!; nested exception is java.lang.IllegalArgumentException: The given id must not be null!
Controller:
#RequestMapping(value = "/update", method = RequestMethod.POST)
#ResponseBody
public PostResponse update(Setting setting, BindingResult bindingResult) {
return settingService.processUpdate(setting, bindingResult, messageSource);
}
JSON data:
{
"updatedAt":1460600207000,
"id":1,
"createdBy":null,
"description":"This is a setting",
"code":"MY_SETTING",
"value":"{\"id\":\"1018\",\"title\":\"Another setting\",\"code\":\"220-203-10-101\"}"
}
Model:
#Entity
#JsonIgnoreProperties(ignoreUnknown = true)
public class Setting {
#Id
#GeneratedValue
#Column
private Integer id;
#Column(unique = true)
private String code;
#Column
private String description;
#Column
private String value;
#Temporal(TemporalType.TIMESTAMP)
#Column(nullable = false)
private Date createdAt;
#Temporal(TemporalType.TIMESTAMP)
#Column(nullable = false)
private Date updatedAt;
#NotFound(action = NotFoundAction.IGNORE)
#ManyToOne(fetch = FetchType.LAZY)
#JoinColumn(name="FK_createdByUserId")
private User createdBy;
public Setting() {}
public Setting(String code, String description, String value, Date createdAt, Date updatedAt, User createdBy) {
this.code = code;
this.description = description;
this.value = value;
this.createdAt = createdAt;
this.updatedAt = updatedAt;
this.createdBy = createdBy;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getValue() {
return value;
}
public void setValue(String value) {
this.value = value;
}
public Date getCreatedAt() {
return createdAt;
}
public void setCreatedAt(Date createdAt) {
this.createdAt = createdAt;
}
public Date getUpdatedAt() {
return updatedAt;
}
public void setUpdatedAt(Date updatedAt) {
this.updatedAt = updatedAt;
}
public User getCreatedBy() {
return createdBy;
}
public void setCreatedBy(User createdBy) {
this.createdBy = createdBy;
}
I guess that the setting bean is not mapped at all.
You need to tell spring how to map the http request to the method arguments. If you're posting data, the best way is to add #RequestBody annotation to the relevant method argument (setting in your case)
Modify your controller method like this:
#RequestMapping(value = "/update", method = RequestMethod.POST)
#ResponseBody
public PostResponse update(#RequestBody Setting setting, BindingResult bindingResult) {
return settingService.processUpdate(setting, bindingResult, messageSource);
}
I have a camel route which uses Velocity template and in the body I have an object defined as following:
class MailImpl extends AbstractMail{
private BodyContext bodyContext;
public BodyContext getBodyContext() {
return bodyContext;
}
public void setBodyContext(BodyContext bodyContext) {
this.bodyContext = bodyContext;
}
private String test;
public String getTest() {
return test;
}
public void setTest(String test) {
this.test = test;
}
#Override
public String toString() {
return "MailImpl{" +
"bodyContext=" + bodyContext +
'}';
}
}
class BodyContext{
private String value;
public BodyContext(String value) {
this.value = value;
}
public BodyContext() {
}
public String getValue() {
return value;
}
public void setValue(String value) {
this.value = value;
}
#Override
public String toString() {
return "BodyContext{" +
"value='" + value + '\'' +
'}';
}
In the velocity template I would like to access the MailImpl object properties, for example I use ${body.test} and ${body.bodyContext.value} but velocity template does not transform those values (it returns as string ${body.test} and ${body.bodyContext.value}).
One solution could be creating headers for each of of the value I need to use in the template, but as my route is dynamic (I select velocity template based on header) I would like to access the body properties in the velocity context. Is this somehow possible?
You can setup a custom Velocity Context by setting the message header "CamelVelocityContext" (since Camel v2.14). From Camel's test case:
Map<String, Object> variableMap = new HashMap<String, Object>();
Map<String, Object> headersMap = new HashMap<String, Object>();
headersMap.put("name", "Willem");
variableMap.put("headers", headersMap);
variableMap.put("body", "Monday");
variableMap.put("exchange", exchange);
VelocityContext velocityContext = new VelocityContext(variableMap);
exchange.getIn().setHeader(VelocityConstants.VELOCITY_CONTEXT, velocityContext);
exchange.setProperty("item", "7");
With following template:
Dear ${headers.name}. You ordered item ${exchange.properties.item} on ${body}.
You get:
Dear Willem. You ordered item 7 on Monday.
I am trying to get the user's friends list from Facebook.
The problem seems to be the Javabean...
FBUser fbuser = new Gson().fromJson(jsonStr, FBUser.class);
public class FBUser implements Serializable {
private static final long serialVersionUID = -3154429420153433117L;
private String id;
private String name;
private String email;
private Friends friendsList = new Friends();
private FBUser() { }
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public List<Data> getFriendsList() {
return friendsList.getData();
}
public static class Friends implements Serializable {
private static final long serialVersionUID = 6991758772193514527L;
private List<Data> data;
private Friends() { }
public List<Data> getData() {
return data;
}
public void setData(List<Data> data) {
this.data = data;
}
public class Paging implements Serializable {
private static final long serialVersionUID = 1689816298710621080L;
private String next;
private Paging() { }
public String getNext() {
return next;
}
public void setNext(String next) {
this.next = next;
}
}
}
public class Data implements Serializable {
private static final long serialVersionUID = -5008541658519841090L;
private String id;
private String name;
private Data() { }
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
}
Json:
json: {"id":"10861234","name":"Whatever","email":"whatever\u0040gmail.com","friends":{"data":[{"name":"Someone","id":"10861234"},{"name" ...43"}],"paging":{"next":"https:\/\/graph.facebook.com\/10861234\/friends..."}}}
The fields ID, Name and Email I can retrieve succesfully... but the friendsList is null... =(
Maybe it is the way I am trying to get it from the nested class, any suggestions on that?
There is no friendsList in your JSON (or, there's no friends in your Java class - whichever way you'd like to look at it). Gson silently ignores anything in the JSON that is not present in your classes.
You have a field friends whose value is an object. That object has a field data which is an array of objects and a field paging which is another object.
You need to write Java classes that match that structure. You're ... close.
In your FBUser class change:
private Friends friendsList = new Friends();
to:
private Friends friends = new Friends();
or:
#SerializedName("friends")
private Friends friendsList = new Friends();
Then in your Friends class you need to add:
private Paging paging = new Paging();
Also note that you don't have to initialize these values unless you specifically don't want them to be non-null when using these classes elsewhere.
I've seen this kind of thing described in various examples showing how to create a REST service which takes arrays or a list of objects as part of the URL.
My question is, how to implement this using RESTeasy?
Something like the following would be how i would assume this to work.
#GET
#Path("/stuff/")
#Produces("application/json")
public StuffResponse getStuffByThings(
#QueryParam("things") List<Thing> things);
Create a StringConverter and a use a wrapper object. Here is a quick and dirty example:
public class QueryParamAsListTest {
public static class Thing {
String value;
Thing(String value){ this.value = value; }
}
public static class ManyThings {
List<Thing> things = new ArrayList<Thing>();
ManyThings(String values){
for(String value : values.split(",")){
things.add(new Thing(value));
}
}
}
static class Converter implements StringConverter<ManyThings> {
public ManyThings fromString(String str) {
return new ManyThings(str);
}
public String toString(ManyThings value) {
//TODO: implement
return value.toString();
}
}
#Path("/")
public static class Service {
#GET
#Path("/stuff/")
public int getStuffByThings(
#QueryParam("things") ManyThings things){
return things.things.size();
}
}
#Test
public void test() throws Exception {
Dispatcher dispatcher = MockDispatcherFactory.createDispatcher();
dispatcher.getProviderFactory().addStringConverter(new Converter());
dispatcher.getRegistry().addSingletonResource(new Service());
MockHttpRequest request = MockHttpRequest.get("/stuff?things=a,b,c");
MockHttpResponse response = new MockHttpResponse();
dispatcher.invoke(request, response);
Assert.assertEquals("3", response.getContentAsString());
}
}
I think you can also use a StringParamUnmarshaller
I had some luck with this, using Collection rather than List. I was unable to make a StringConverter for List work.
#Provider
public class CollectionConverter implements StringConverter<Collection<String>> {
public Collection<String> fromString(String string) {
if (string == null) {
return Collections.emptyList();
}
return Arrays.asList(string.split(","));
}
public String toString(Collection<String> values) {
final StringBuilder sb = new StringBuilder();
boolean first = true;
for (String value : values) {
if (first) {
first = false;
} else {
sb.append(",");
}
sb.append(value);
}
return sb.toString();
}
}
I did the toString from my head. Be sure to write unit tests for it to verify. But of course, everything is easier and clearer when you use Guava. Can use Joiner and Splitter. Really handy.
Just use a wrapper on its own, no need for anything else.
In your endpoint
#Produces({MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML})
#Path("/find")
#GET
MyResponse find(#QueryParam("ids") Wrapper ids);
And you wrapper looks like this :
public class Wrapper implements Serializable {
private List<BigInteger> ids = Collections.emptyList();
public String toString() {
return Joiner.on(",")
.join(ids);
}
public List<BigInteger> get() {
return ids;
}
public Wrapper(String s) {
if (s == null) {
ids = Collections.emptyList();
}
Iterable<String> splitted = Splitter.on(',')
.split(s);
Iterable<BigInteger> ids = Iterables.transform(splitted, Functionz.stringToBigInteger);
this.ids = Lists.newArrayList(ids);
}
public Wrapper(List<BigInteger> ids) {
this.ids = ids;
}
}