Reading Content-Type application/json in Spring
Like in trying-to-use-spring-boot-rest-to-read-json-string-from-post I want to read a json payload from a POST request in a Spring RestController. Using the content type "text/plain" there is no problem, but with "application/json" the deserialization fails and I get a MessageNotReadable exception. But actually the content couldn't be simpler, it is just an empty json object "{}". Could it be that a required converter is missing?
I use Spring Root version 1.2.3.RELEASE.
Coding Example
@RequestMapping(value = "/deepdefinitions", method = POST, headers = "Accept=application/json")
@ResponseBody
public Definitions createOrUpdateDefinitions(HttpEntity<String> httpEntity) throws IOException { ... }
Curl Call
curl -H "Content-type: application/json" -X POST -d '{}' http://localhost:8080/deepdefinitions
Error
{"timestamp":1434397457853,"status":400,"error":"Bad Request","exception":"org.springframework.http.converter.HttpMessageNotReadableException","message":"Could not read JSON: Can not deserialize instance of java.lang.String out of START_OBJECT tokenn at [Source: org.apache.catalina.connector.CoyoteInputStream@122f9ce3; line: 1, column: 1]; nested exception is com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of java.lang.String out of START_OBJECT tokenn at [Source: org.apache.catalina.connector.CoyoteInputStream@122f9ce3; line: 1, column: 1]","path":"/deepdefinitions"}
java json spring spring-mvc spring-boot
edited May 23 '17 at 12:10
Community♦
11
asked Jun 15 '15 at 11:38
GregorGregor
1,15921435
add a comment |
Like in trying-to-use-spring-boot-rest-to-read-json-string-from-post I want to read a json payload from a POST request in a Spring RestController. Using the content type "text/plain" there is no problem, but with "application/json" the deserialization fails and I get a MessageNotReadable exception. But actually the content couldn't be simpler, it is just an empty json object "{}". Could it be that a required converter is missing?
I use Spring Root version 1.2.3.RELEASE.
Coding Example
@RequestMapping(value = "/deepdefinitions", method = POST, headers = "Accept=application/json")
@ResponseBody
public Definitions createOrUpdateDefinitions(HttpEntity<String> httpEntity) throws IOException { ... }
Curl Call
curl -H "Content-type: application/json" -X POST -d '{}' http://localhost:8080/deepdefinitions
Error
{"timestamp":1434397457853,"status":400,"error":"Bad Request","exception":"org.springframework.http.converter.HttpMessageNotReadableException","message":"Could not read JSON: Can not deserialize instance of java.lang.String out of START_OBJECT tokenn at [Source: org.apache.catalina.connector.CoyoteInputStream@122f9ce3; line: 1, column: 1]; nested exception is com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of java.lang.String out of START_OBJECT tokenn at [Source: org.apache.catalina.connector.CoyoteInputStream@122f9ce3; line: 1, column: 1]","path":"/deepdefinitions"}
java json spring spring-mvc spring-boot
edited May 23 '17 at 12:10
Community♦
11
asked Jun 15 '15 at 11:38
GregorGregor
1,15921435
1
You should use headers = "Accept=application/json" in '@RequestMapping' and pass the serialized object in '@RequestBody' to your controller method
– Darshan
Jun 15 '15 at 12:00
Show the exact exception/stack trace please.
– ci_
Jun 15 '15 at 13:03
@Darshan, the "headers" in RequestMapping does not change the behaviour. I update the question with a coding example.
– Gregor
Jun 15 '15 at 19:46
add a comment |
Like in trying-to-use-spring-boot-rest-to-read-json-string-from-post I want to read a json payload from a POST request in a Spring RestController. Using the content type "text/plain" there is no problem, but with "application/json" the deserialization fails and I get a MessageNotReadable exception. But actually the content couldn't be simpler, it is just an empty json object "{}". Could it be that a required converter is missing?
I use Spring Root version 1.2.3.RELEASE.
Coding Example
@RequestMapping(value = "/deepdefinitions", method = POST, headers = "Accept=application/json")
@ResponseBody
public Definitions createOrUpdateDefinitions(HttpEntity<String> httpEntity) throws IOException { ... }
Curl Call
curl -H "Content-type: application/json" -X POST -d '{}' http://localhost:8080/deepdefinitions
Error
{"timestamp":1434397457853,"status":400,"error":"Bad Request","exception":"org.springframework.http.converter.HttpMessageNotReadableException","message":"Could not read JSON: Can not deserialize instance of java.lang.String out of START_OBJECT tokenn at [Source: org.apache.catalina.connector.CoyoteInputStream@122f9ce3; line: 1, column: 1]; nested exception is com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of java.lang.String out of START_OBJECT tokenn at [Source: org.apache.catalina.connector.CoyoteInputStream@122f9ce3; line: 1, column: 1]","path":"/deepdefinitions"}
java json spring spring-mvc spring-boot
edited May 23 '17 at 12:10
Community♦
11
asked Jun 15 '15 at 11:38
GregorGregor
1,15921435
Like in trying-to-use-spring-boot-rest-to-read-json-string-from-post I want to read a json payload from a POST request in a Spring RestController. Using the content type "text/plain" there is no problem, but with "application/json" the deserialization fails and I get a MessageNotReadable exception. But actually the content couldn't be simpler, it is just an empty json object "{}". Could it be that a required converter is missing?
I use Spring Root version 1.2.3.RELEASE.
Coding Example
@RequestMapping(value = "/deepdefinitions", method = POST, headers = "Accept=application/json")
@ResponseBody
public Definitions createOrUpdateDefinitions(HttpEntity<String> httpEntity) throws IOException { ... }
Curl Call
curl -H "Content-type: application/json" -X POST -d '{}' http://localhost:8080/deepdefinitions
Error
{"timestamp":1434397457853,"status":400,"error":"Bad Request","exception":"org.springframework.http.converter.HttpMessageNotReadableException","message":"Could not read JSON: Can not deserialize instance of java.lang.String out of START_OBJECT tokenn at [Source: org.apache.catalina.connector.CoyoteInputStream@122f9ce3; line: 1, column: 1]; nested exception is com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of java.lang.String out of START_OBJECT tokenn at [Source: org.apache.catalina.connector.CoyoteInputStream@122f9ce3; line: 1, column: 1]","path":"/deepdefinitions"}
java json spring spring-mvc spring-boot
java json spring spring-mvc spring-boot
edited May 23 '17 at 12:10
Community♦
11
asked Jun 15 '15 at 11:38
GregorGregor
1,15921435
edited May 23 '17 at 12:10
Community♦
11
asked Jun 15 '15 at 11:38
GregorGregor
1,15921435
edited May 23 '17 at 12:10
Community♦
11
edited May 23 '17 at 12:10
Community♦
11
edited May 23 '17 at 12:10
Community♦
11
11
asked Jun 15 '15 at 11:38
GregorGregor
1,15921435
asked Jun 15 '15 at 11:38
GregorGregor
1,15921435
asked Jun 15 '15 at 11:38
GregorGregor
1,15921435
1,15921435
1
You should use headers = "Accept=application/json" in '@RequestMapping' and pass the serialized object in '@RequestBody' to your controller method
– Darshan
Jun 15 '15 at 12:00
Show the exact exception/stack trace please.
– ci_
Jun 15 '15 at 13:03
@Darshan, the "headers" in RequestMapping does not change the behaviour. I update the question with a coding example.
– Gregor
Jun 15 '15 at 19:46
add a comment |
1
You should use headers = "Accept=application/json" in '@RequestMapping' and pass the serialized object in '@RequestBody' to your controller method
– Darshan
Jun 15 '15 at 12:00
Show the exact exception/stack trace please.
– ci_
Jun 15 '15 at 13:03
@Darshan, the "headers" in RequestMapping does not change the behaviour. I update the question with a coding example.
– Gregor
Jun 15 '15 at 19:46
1
1
You should use headers = "Accept=application/json" in '@RequestMapping' and pass the serialized object in '@RequestBody' to your controller method
– Darshan
Jun 15 '15 at 12:00
You should use headers = "Accept=application/json" in '@RequestMapping' and pass the serialized object in '@RequestBody' to your controller method
– Darshan
Jun 15 '15 at 12:00
Show the exact exception/stack trace please.
– ci_
Jun 15 '15 at 13:03
Show the exact exception/stack trace please.
– ci_
Jun 15 '15 at 13:03
@Darshan, the "headers" in RequestMapping does not change the behaviour. I update the question with a coding example.
– Gregor
Jun 15 '15 at 19:46
@Darshan, the "headers" in RequestMapping does not change the behaviour. I update the question with a coding example.
– Gregor
Jun 15 '15 at 19:46
add a comment |
1 Answer
1
active
oldest
votes
From Spring REST guide
The
AcceptandContent-TypeHTTP headers can be used to describe the content being sent or requested within an HTTP request. The client may setAccepttoapplication/jsonif it is requesting a response in JSON. Conversely, when sending data, setting theContent-Typetoapplication/xmltells the client that the data being sent in the request is XML.
It appears your Controller is processing only Accept header:
@RequestMapping(value = "/deepdefinitions", method = POST, headers = "Accept=application/json")
You need to change it to:
@RequestMapping(value = "/deepdefinitions", method = POST, headers = "Accept=application/json,Content-type=application/json")
There are also Consumes and Produces annotations.
The documentation recommends:
Although you can match to
Content-TypeandAcceptheader values using media type wild cards (for example "content-type=text/*" will match to "text/plain" and "text/html"), it is recommended to use theconsumesandproducesconditions respectively instead. They are intended specifically for that purpose.
Going by your related post, you should change your method signature to:
public @ResponseBody Definitions createOrUpdateDefinitions(@RequestBody String value, HttpEntity httpEntity) throws IOException
I think you should also change you curl command as below.This is because {}(Javascript Object literal) would map to a object and to map to a String you should use a empty string '' literal.
curl -H "Content-type: application/json" -X POST -d '' http://localhost:8080/deepdefinitions
answered Jun 16 '15 at 1:04
randominstanceOfLivingThingrandominstanceOfLivingThing
5,57352852
I had used the consumes condition before. It was Darsham who recommended to use the accept header. But the consumes leads to the same problem.
– Gregor
Jun 16 '15 at 3:50
add a comment |
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
From Spring REST guide
The
AcceptandContent-TypeHTTP headers can be used to describe the content being sent or requested within an HTTP request. The client may setAccepttoapplication/jsonif it is requesting a response in JSON. Conversely, when sending data, setting theContent-Typetoapplication/xmltells the client that the data being sent in the request is XML.
It appears your Controller is processing only Accept header:
@RequestMapping(value = "/deepdefinitions", method = POST, headers = "Accept=application/json")
You need to change it to:
@RequestMapping(value = "/deepdefinitions", method = POST, headers = "Accept=application/json,Content-type=application/json")
There are also Consumes and Produces annotations.
The documentation recommends:
Although you can match to
Content-TypeandAcceptheader values using media type wild cards (for example "content-type=text/*" will match to "text/plain" and "text/html"), it is recommended to use theconsumesandproducesconditions respectively instead. They are intended specifically for that purpose.
Going by your related post, you should change your method signature to:
public @ResponseBody Definitions createOrUpdateDefinitions(@RequestBody String value, HttpEntity httpEntity) throws IOException
I think you should also change you curl command as below.This is because {}(Javascript Object literal) would map to a object and to map to a String you should use a empty string '' literal.
curl -H "Content-type: application/json" -X POST -d '' http://localhost:8080/deepdefinitions
answered Jun 16 '15 at 1:04
randominstanceOfLivingThingrandominstanceOfLivingThing
5,57352852
I had used the consumes condition before. It was Darsham who recommended to use the accept header. But the consumes leads to the same problem.
– Gregor
Jun 16 '15 at 3:50
add a comment |
From Spring REST guide
The
AcceptandContent-TypeHTTP headers can be used to describe the content being sent or requested within an HTTP request. The client may setAccepttoapplication/jsonif it is requesting a response in JSON. Conversely, when sending data, setting theContent-Typetoapplication/xmltells the client that the data being sent in the request is XML.
It appears your Controller is processing only Accept header:
@RequestMapping(value = "/deepdefinitions", method = POST, headers = "Accept=application/json")
You need to change it to:
@RequestMapping(value = "/deepdefinitions", method = POST, headers = "Accept=application/json,Content-type=application/json")
There are also Consumes and Produces annotations.
The documentation recommends:
Although you can match to
Content-TypeandAcceptheader values using media type wild cards (for example "content-type=text/*" will match to "text/plain" and "text/html"), it is recommended to use theconsumesandproducesconditions respectively instead. They are intended specifically for that purpose.
Going by your related post, you should change your method signature to:
public @ResponseBody Definitions createOrUpdateDefinitions(@RequestBody String value, HttpEntity httpEntity) throws IOException
I think you should also change you curl command as below.This is because {}(Javascript Object literal) would map to a object and to map to a String you should use a empty string '' literal.
curl -H "Content-type: application/json" -X POST -d '' http://localhost:8080/deepdefinitions
answered Jun 16 '15 at 1:04
randominstanceOfLivingThingrandominstanceOfLivingThing
5,57352852
I had used the consumes condition before. It was Darsham who recommended to use the accept header. But the consumes leads to the same problem.
– Gregor
Jun 16 '15 at 3:50
add a comment |
From Spring REST guide
The
AcceptandContent-TypeHTTP headers can be used to describe the content being sent or requested within an HTTP request. The client may setAccepttoapplication/jsonif it is requesting a response in JSON. Conversely, when sending data, setting theContent-Typetoapplication/xmltells the client that the data being sent in the request is XML.
It appears your Controller is processing only Accept header:
@RequestMapping(value = "/deepdefinitions", method = POST, headers = "Accept=application/json")
You need to change it to:
@RequestMapping(value = "/deepdefinitions", method = POST, headers = "Accept=application/json,Content-type=application/json")
There are also Consumes and Produces annotations.
The documentation recommends:
Although you can match to
Content-TypeandAcceptheader values using media type wild cards (for example "content-type=text/*" will match to "text/plain" and "text/html"), it is recommended to use theconsumesandproducesconditions respectively instead. They are intended specifically for that purpose.
Going by your related post, you should change your method signature to:
public @ResponseBody Definitions createOrUpdateDefinitions(@RequestBody String value, HttpEntity httpEntity) throws IOException
I think you should also change you curl command as below.This is because {}(Javascript Object literal) would map to a object and to map to a String you should use a empty string '' literal.
curl -H "Content-type: application/json" -X POST -d '' http://localhost:8080/deepdefinitions
answered Jun 16 '15 at 1:04
randominstanceOfLivingThingrandominstanceOfLivingThing
5,57352852
From Spring REST guide
The
AcceptandContent-TypeHTTP headers can be used to describe the content being sent or requested within an HTTP request. The client may setAccepttoapplication/jsonif it is requesting a response in JSON. Conversely, when sending data, setting theContent-Typetoapplication/xmltells the client that the data being sent in the request is XML.
It appears your Controller is processing only Accept header:
@RequestMapping(value = "/deepdefinitions", method = POST, headers = "Accept=application/json")
You need to change it to:
@RequestMapping(value = "/deepdefinitions", method = POST, headers = "Accept=application/json,Content-type=application/json")
There are also Consumes and Produces annotations.
The documentation recommends:
Although you can match to
Content-TypeandAcceptheader values using media type wild cards (for example "content-type=text/*" will match to "text/plain" and "text/html"), it is recommended to use theconsumesandproducesconditions respectively instead. They are intended specifically for that purpose.
Going by your related post, you should change your method signature to:
public @ResponseBody Definitions createOrUpdateDefinitions(@RequestBody String value, HttpEntity httpEntity) throws IOException
I think you should also change you curl command as below.This is because {}(Javascript Object literal) would map to a object and to map to a String you should use a empty string '' literal.
curl -H "Content-type: application/json" -X POST -d '' http://localhost:8080/deepdefinitions
answered Jun 16 '15 at 1:04
randominstanceOfLivingThingrandominstanceOfLivingThing
5,57352852
edited Jun 16 '15 at 4:15
answered Jun 16 '15 at 1:04
randominstanceOfLivingThingrandominstanceOfLivingThing
5,57352852
answered Jun 16 '15 at 1:04
randominstanceOfLivingThingrandominstanceOfLivingThing
5,57352852
answered Jun 16 '15 at 1:04
randominstanceOfLivingThingrandominstanceOfLivingThing
5,57352852
5,57352852
I had used the consumes condition before. It was Darsham who recommended to use the accept header. But the consumes leads to the same problem.
– Gregor
Jun 16 '15 at 3:50
add a comment |
I had used the consumes condition before. It was Darsham who recommended to use the accept header. But the consumes leads to the same problem.
– Gregor
Jun 16 '15 at 3:50
I had used the consumes condition before. It was Darsham who recommended to use the accept header. But the consumes leads to the same problem.
– Gregor
Jun 16 '15 at 3:50
I had used the consumes condition before. It was Darsham who recommended to use the accept header. But the consumes leads to the same problem.
– Gregor
Jun 16 '15 at 3:50
add a comment |
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1
You should use headers = "Accept=application/json" in '@RequestMapping' and pass the serialized object in '@RequestBody' to your controller method
– Darshan
Jun 15 '15 at 12:00
Show the exact exception/stack trace please.
– ci_
Jun 15 '15 at 13:03
@Darshan, the "headers" in RequestMapping does not change the behaviour. I update the question with a coding example.
– Gregor
Jun 15 '15 at 19:46