I have a Spring MVC Rest service that return JSON value, i have 8 row, here is my JSON
[
{"no":"1","date":"2015-03-30","grandtotal":699618,"diskon":699618},
{"no":"2","date":"2015-03-30","grandtotal":1867949,"diskon":1867949},
{"no":"3","date":"2015-03-27","grandtotal":2190909,"diskon":2190909},
{"no":"4","date":"2015-03-26","grandtotal":8616120,"diskon":8616120},
{"no":"5","date":"2015-03-26","grandtotal":1095455,"diskon":1095455},
{"no":"6","date":"2015-03-24","grandtotal":938961,"diskon":938961},
{"no":"7","date":"2015-03-24","grandtotal":5603848,"diskon":5603848},
{"no":"8","date":"2015-03-20","grandtotal":3735899,"diskon":3735899}
]
What i trying.. Here is my controller. SpringRestController.java
Jackson Way :
#RequestMapping(value = "/view", method = RequestMethod.GET)
public String initCreationForm(Map<String, Object> model) {
String url = "http://localhost:8080/SpringServiceJson/view/";
RestTemplate restTemplate = new RestTemplate();
TotalDiscList totaldisc = restTemplate.getForObject(url, TotalDisc.class);
model.put("DiscValue",totaldisc);
return "salesorders/totalDisc";
}
Gson way :
public String initCreationForm(Map<String, Object> model) {
String url = "http://localhost:8080/SpringServiceJson/view/";
Gson gson = new Gson();
Collection<TotalDisc> totaldisc = gson.fromJson(url, PiutangListJson.class);
model.put("DiscValue",totaldisc);
return "salesorders/totalDisc";
}
what i missed here? it always give me this error
"Could not extract response: no suitable HttpMessageConverter found for response type [class [Lorg.springframework.samples.my.model.TotalDiscList;] and content type [application/json]"
Here is my object TotalDiscList.java
public class TotalDiscList {
private String no;
#DateTimeFormat(pattern="dd-MM-yyyy")
private Date date;
private long grandtotal;
private long diskon;
//getter setter skipped
}
i should return List<TotalDiscList> totaldisc = restTemplate.getForObject(url, List<TotalDisc>.class); right?
how i do that properly?
If you have a servlet-context.xml, you can add the message-convertor there, like below :
<beans:bean
class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
<beans:property name="messageConverters" ref="jsonMessageConverter" />
</beans:bean>
<beans:bean id="jsonMessageConverter"
class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter" />
I am doing the same and it works.
Edit
You need to provide a Message converter to your RestTemplate
restTemplate.getMessageConverters().add(new MappingJackson2HttpMessageConverter());
restTemplate.getMessageConverters().add(new StringHttpMessageConverter());
And then try using an array, such as:
TotalDiscList[] totaldisc = restTemplate
.getForObject(url, TotalDiscList[].class);
you can configure a json message converter:
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
<property name="messageConverters">
<list>
<ref bean="jsonConverter" />
</list>
</property>
</bean>
and then, you can just annotate your method:
#RequestMapping(value = "/view", method = RequestMethod.POST)
public TotalDiscList[] createDiscList(
#RequestBody TotalDiscList[] object) {
}
which would cause the message converter to try to convert to the given class.
Related
If I use the following configuration then jackson converter works (mvc declaration is last)
<!-- Configure to plugin JSON as request and response in method handler -->
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
<property name="messageConverters">
<list>
<ref bean="jsonMessageConverter"/>
</list>
</property>
</bean>
<!-- Configure bean to convert JSON to POJO and vice versa -->
<bean id="jsonMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
</bean>
<context:component-scan base-package="com.base" />
<mvc:annotation-driven />
If I use this configuration in dispatcher.xml then validation works but conversion does not. (mvc declaration first)
<context:component-scan base-package="com.base" />
<mvc:annotation-driven />
<!-- Configure to plugin JSON as request and response in method handler -->
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
<property name="messageConverters">
<list>
<ref bean="jsonMessageConverter"/>
</list>
</property>
</bean>
<!-- Configure bean to convert JSON to POJO and vice versa -->
<bean id="jsonMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
</bean>
Any help greatly appreciated.
Spring version 4.0.6
I chose the part where validation is working and added this in the code base.
#RequestMapping(value = "url", method = RequestMethod.GET)
protected void getLocationAsJson(#PathVariable("id") Integer id,
#RequestParam("cid") Integer cid, HttpServletResponse response) {
MappingJacksonHttpMessageConverter jsonConverter =
new MappingJacksonHttpMessageConverter();
Location loc= new Location(id);
MediaType jsonMimeType = MediaType.APPLICATION_JSON;
if (jsonConverter.canWrite(requestedLocation.getClass(), jsonMimeType)) {
try {
jsonConverter.write(requestedLocation, jsonMimeType,
new ServletServerHttpResponse(response));
} catch (IOException m_Ioe) {
// TODO: announce this exception somehow
} catch (HttpMessageNotWritableException p_Nwe) {
// TODO: announce this exception somehow
}
}
}
Now the validation works as well as JSON returning.
The method is not returning anything.
RequestMappingHandlerAdapter's xml configuration is bit complicated. The problem with this configuration is, it removes spring default configuration for converters. It is better to use coding version of this configuration. Spring default configuration will be intact this way. Here is sample configurations.
Suggested solution, posted on numerous blogs. But not working in my case.
https://dzone.com/articles/customizing
http://www.java-allandsundry.com/2014/09/customizing-httpmessageconverters-with.html
#Configuration
public class MessageConvertorConfiguration extends WebMvcConfigurationSupport {
#Bean
public MappingJackson2HttpMessageConverter customJackson2HttpMessageConverter() {
MappingJackson2HttpMessageConverter jsonConverter = new MappingJackson2HttpMessageConverter();
ObjectMapper objectMapper = new ObjectMapper();
Custom360DateFormat dateFormat = new Custom360DateFormat();
dateFormat.setDateFormat(new SimpleDateFormat("MM/dd/yyyy"));
dateFormat.setDateTimeFormat(new SimpleDateFormat("MM/dd/yyyy hh:mm a"));
objectMapper.setDateFormat(dateFormat);
objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
jsonConverter.setObjectMapper(objectMapper);
return jsonConverter;
}
#Override
public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
converters.add(customJackson2HttpMessageConverter());
super.addDefaultHttpMessageConverters(converters);
}
}
Working Solution
#Configuration
public class MessageConvertorConfiguration {
private MappingJackson2HttpMessageConverter customJackson2HttpMessageConverter() {
MappingJackson2HttpMessageConverter jsonConverter = new MappingJackson2HttpMessageConverter();
ObjectMapper objectMapper = new ObjectMapper();
Custom360DateFormat dateFormat = new Custom360DateFormat();
dateFormat.setDateFormat(new SimpleDateFormat("MM/dd/yyyy"));
dateFormat.setDateTimeFormat(new SimpleDateFormat("MM/dd/yyyy hh:mm a"));
objectMapper.setDateFormat(dateFormat);
objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
jsonConverter.setObjectMapper(objectMapper);
return jsonConverter;
}
#Autowired
public void updateJacksonConvertor(RequestMappingHandlerAdapter handlerAdapter) {
//remove default jakson convertor
Iterator<HttpMessageConverter<?>> convertorsIterator = handlerAdapter.getMessageConverters().iterator();
while (convertorsIterator.hasNext()) {
HttpMessageConverter converter = convertorsIterator.next();
if(converter instanceof AbstractJackson2HttpMessageConverter) {
convertorsIterator.remove();
}
}
handlerAdapter.getMessageConverters().add(customJackson2HttpMessageConverter());
}
}
I'm getting an error that the request sent by the client was syntactically incorrect. What is being done wrong? Here is my code:
#Entity
#Table(name = "display")
public class Display {
private String diagonal;
private String aspectRatio;
//getter and setter
}
$.ajax({
type:'POST',
url:'/admin/updateDisplay',
data:{'diagonal':"sss"}
})
#Controller
#RequestMapping(value = "/admin")
public class AdminController {
#RequestMapping(value = "/updateDisplay", method = RequestMethod.POST)
public String updateDisplay(#RequestBody Display display){
System.out.print(display);
return null;
}
}
I think you need to say what the service media type will consume for Spring to know how to unmarshall it. Probably application/json.
#RequestMapping(value = "/updateDisplay", method = {RequestMethod.POST},
consumes = {"application/json"})
Probably some Json library too, like Jackson.
Use the following:
$.ajax({
type:'POST',
url:'/admin/updateDisplay',
data:{"diagonal":"sss","aspectRatio":"0.5"},
contentType: 'application/json',
dataType: 'json',
})
it works.
EDIT
If you are booting up Spring application Context using annotaitons, then your config class must have:
#Override
protected void configureContentNegotiation(
ContentNegotiationConfigurer configurer) {
configurer.favorPathExtension(false).favorParameter(true)
.parameterName("mediaType").ignoreAcceptHeader(true)
.useJaf(false).defaultContentType(MediaType.APPLICATION_JSON)
.mediaType("xml", MediaType.APPLICATION_XML)
.mediaType("json", MediaType.APPLICATION_JSON);
}
And your ajax request must include
contentType: 'application/json',
dataType: 'json',
check the modified ajax call above.
If you are booting up spring application context using XMLs then use the below:
<bean id="contentNegotiationManager"
class="org.springframework.web.accept.ContentNegotiationManagerFactoryBean">
<property name="favorPathExtension" value="false" />
<property name="favorParameter" value="true" />
<property name="parameterName" value="mediaType" />
<property name="ignoreAcceptHeader" value="true"/>
<property name="useJaf" value="false"/>
<property name="defaultContentType" value="application/json" />
<property name="mediaTypes">
<map>
<entry key="json" value="application/json" />
<entry key="xml" value="application/xml" />
</map>
</property>
</bean>
For more details on writing RESTFUL webservices with Spring 3.2 see my blog
You must convert the JSON data to string before pass it to Spring MVC. So, here is the solution in your case:
$.ajax({
type:'POST',
url:'/admin/updateDisplay',
data: JSON.stringify({'diagonal':"sss"})
})
You don't need #RequestBody.
With #RequestBody Spring calls a converter that takes the whole request and converts it to an object of the required type. You send your data as application/x-www-form-urlencoded, which is the default of jQuery, and there is no built-in converter for that.
Without #RequestBody, when you send form data, spring creates an empty object and sets the properties based on the data you sent. So in your case Spring would do something like
display = new Display();
display.setDiagonal("sss");
Which, I guess, is what you want.
I don't know if this is your problem too, but with me the value is wrong and caused a error 405, example:
#RequestMapping(value = "/planilha/{id}", method = RequestMethod.PUT)
public String update(#PathVariable("id") String id, #RequestBody String jsonStr) {
BasicDBObject json = ((BasicDBObject) JSON.parse(jsonStr));
PlanilhaDAO dao = new PlanilhaDAO();
BasicDBObject ola = dao.update(id, json);
return ola.toString();
}
#RequestMapping(value = "/planilha/{id}", method = RequestMethod.DELETE)
public String delete(#PathVariable("id") String id) {
PlanilhaDAO dao = new PlanilhaDAO();
BasicDBObject temp = dao.remove(id);
return temp.toString();
}
Needed the change for:
#RequestMapping(value = "/planilha/{id}/**", method = RequestMethod.PUT)
public String update(#PathVariable("id") String id, #RequestBody String jsonStr) {
BasicDBObject json = ((BasicDBObject) JSON.parse(jsonStr));
PlanilhaDAO dao = new PlanilhaDAO();
BasicDBObject ola = dao.update(id, json);
return ola.toString();
}
#RequestMapping(value = "/planilha/{id}", method = RequestMethod.DELETE)
public String delete(#PathVariable("id") String id) {
PlanilhaDAO dao = new PlanilhaDAO();
BasicDBObject temp = dao.remove(id);
return temp.toString();
}
Here is the thing... i'm using jtable (jquery) to show some user data. This component needs a json with two fields: Result and Records. In my controller i have a method to return the json:
#RequestMapping(method=RequestMethod.POST, value="/getUsersInJson")
public #ResponseBody String getUsersInJsonHandler(){
ElementsInList<User> users = new ElementsInList<User>();
users.setItems(userService.getUsers());
return users;
}
The class ElementsInList contains two fields: result and records. Result is a string to get the success message and records is a parametrized list which contains in this case a list of users. I get this JSON:
"{"result":"OK","records":[{"username":"john",
But i need this:
"{"Result":"OK","Records":[{"username":"john",...
This is my Mapping:
<!-- Json converter bean -->
<bean id="jacksonMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"></bean>
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
<property name="messageConverters">
<list>
<ref bean="jacksonMessageConverter"/>
</list>
</property>
</bean>
How can i do it? I've checked some posts but have old versions.
I'm using Spring 3, Spring MVC and jQuery.
I solved it by using JsonProperty annotation. You can give the name that jackson will use to build the json field. Here there is an example with jtable (jquery):
public class ElementsInList<T> {
#JsonProperty("Result")
private String result = "OK";
#JsonProperty("Records")
private List<T> records;
public String getResult() {
return result;
}
public void setResult(String result) {
this.result = result;
}
public List<T> getRecords() {
return records;
}
public void setRecords(List<T> records) {
this.records = records;
}
}
The result json is this: {"Result":"OK","Records":[{"roleName":"admin"...
But there is more about this annotations. Check the api for more info: http://fasterxml.github.io/jackson-annotations/javadoc/2.1.0/com/fasterxml/jackson/annotation/package-summary.html
I am trying to configure a simple example for REST service using CXF + Jackson with JaxB #XmlRootElement annotation. I have already gone through various similar questions in stack overflow as well as blogs like this and have come up with the below solution:
Created a custom object mapper as follows:
public class CustomObjectMapper extends ObjectMapper{
public CustomObjectMapper() {
super();
super.configure(SerializationConfig.Feature.WRAP_ROOT_VALUE, true);
super.setSerializationInclusion(JsonSerialize.Inclusion.NON_NULL);
AnnotationIntrospector primary = new JaxbAnnotationIntrospector();
AnnotationIntrospector secondary = new JacksonAnnotationIntrospector();
AnnotationIntrospector pair = new AnnotationIntrospector.Pair(primary, secondary);
super.setAnnotationIntrospector(pair);
}
}
Passed this to Json provided's constructor in spring config
<bean id="jacksonMapper" class="com.myorg.test.CustomObjectMapper" />
<jaxrs:providers>
<bean class="org.codehaus.jackson.jaxrs.JacksonJsonProvider">
<constructor-arg ref="jacksonMapper" />
</bean>
</jaxrs:providers>
Added a simple class JsonBean with JAXB Root element annotation
#XmlRootElement(name = "JsonBean")
public class JsonBean {
private String val1;
private String val2;
public String getVal1() {
return val1;
}
public void setVal1(String val1) {
this.val1 = val1;
}
public String getVal2() {
return val2;
}
public void setVal2(String val2) {
this.val2 = val2;
}
}
When I pass the below json,
{
"JsonBean": {
"val1": "Hello",
"val2": "Hi"
}
}
it's throwing below exception:
WARNING: javax.ws.rs.InternalServerErrorException: org.codehaus.jackson.map.exc.UnrecognizedPropertyException: Unrecognized field "JsonBean" (Class com.cognizan
t.poc.connectedcar.JsonBean), not marked as ignorable
at [Source: org.apache.cxf.transport.http.AbstractHTTPDestination$1#1f2fae4; line: 2, column: 13] (through reference chain: com.myorg.test.Json
Bean["JsonBean"])
at org.apache.cxf.jaxrs.interceptor.JAXRSInInterceptor.processRequest(JAXRSInInterceptor.java:243)
at org.apache.cxf.jaxrs.interceptor.JAXRSInInterceptor.handleMessage(JAXRSInInterceptor.java:99)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:271)
at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)
at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:239)
at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:223)
at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:203)
at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:137)
at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:158)
at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:243)
at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPost(AbstractHTTPServlet.java:163)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:755)
at org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:219)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:669)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:457)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255)
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
at org.eclipse.jetty.server.Server.handle(Server.java:368)
at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
at org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:953)
Am I missing something here? Please help.
I got it right.
I missed to add unwrap for de-serialization in the custom mapper:
added the below line in CustomObjectMaller
super.configure(DeserializationConfig.Feature.UNWRAP_ROOT_VALUE, true);
also, modified the spring config file as:
<jaxrs:providers>
<bean id="jsonProvider" class="org.codehaus.jackson.jaxrs.JacksonJaxbJsonProvider">
<property name="mapper" ref="jacksonMapper" />
</bean>
</jaxrs:providers>
It started working as expected..
I am using Spring REST framework and Jackson JSON
<bean id="jsonConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
<property name="objectMapper" ref="customObjectMapper" />
<property name="supportedMediaTypes" value="application/json" />
</bean>
<bean id="customObjectMapper"class="com.rackspace.payment.webapp.utils.JaxbJacksonObjectMapper" />
public class JaxbJacksonObjectMapper extends ObjectMapper {
#SuppressWarnings("deprecation")
public JaxbJacksonObjectMapper() {
final AnnotationIntrospector introspector = new JaxbAnnotationIntrospector();
this.configure(org.codehaus.jackson.map.DeserializationConfig.Feature.UNWRAP_ROOT_VALUE, true);
super.getDeserializationConfig().withAnnotationIntrospector(introspector);
this.configure(org.codehaus.jackson.map.SerializationConfig.Feature.WRITE_NULL_PROPERTIES, false);
this.configure(org.codehaus.jackson.map.SerializationConfig.Feature.WRAP_ROOT_VALUE, true);
super.getSerializationConfig().withAnnotationIntrospector(introspector);
}
}
//JXAB element
#XmlAttribute(name = "createDate")
#XmlJavaTypeAdapter(CustomDateAdapter.class)
protected Date createDate;
The issue I face is, when the JSON output is displayed 'createDate' element is displayed like a string the xml adapter class is not invoked, whereas it works fine in XML output.
What am I missing? how to invoke the XmlJavaTypeAdapter in JSON format.
the code below did the trick for me .
ObjectMapper objectMapper = new CustomObjectMapper(ENTITY_WITH_ID_DESERIALIZER);
AnnotationIntrospector primary = new JacksonAnnotationIntrospector();
AnnotationIntrospector secondary = new JaxbAnnotationIntrospector();
AnnotationIntrospector pair = new AnnotationIntrospector.Pair(primary, secondary);
objectMapper.setAnnotationIntrospector(pair);
objectMapper.configure(DeserializationConfig.Feature.USE_ANNOTATIONS, true);