How to configure Jackson mapper
How can I globally configure json serializer for http4k? For example, snake case field names or formatting DateTime as ISO8601.
kotlin http4k
asked Nov 18 '18 at 13:54
alisabzevarialisabzevari
3,78212751
add a comment |
How can I globally configure json serializer for http4k? For example, snake case field names or formatting DateTime as ISO8601.
kotlin http4k
asked Nov 18 '18 at 13:54
alisabzevarialisabzevari
3,78212751
The solution is likely similar to the answer on this issue reported to http4k: github.com/http4k/http4k/issues/183 where you have to create your own subtype ofConfigurableJackson... not the easiest way to have extensibility, but appears to be the option.
– Jayson Minard
Nov 18 '18 at 16:01
Yeah, I did the same. Creating another object subclassing fromConfigurableJackson. Would you mind creating an answer to my question?
– alisabzevari
Nov 18 '18 at 18:33
add a comment |
How can I globally configure json serializer for http4k? For example, snake case field names or formatting DateTime as ISO8601.
kotlin http4k
asked Nov 18 '18 at 13:54
alisabzevarialisabzevari
3,78212751
How can I globally configure json serializer for http4k? For example, snake case field names or formatting DateTime as ISO8601.
kotlin http4k
kotlin http4k
asked Nov 18 '18 at 13:54
alisabzevarialisabzevari
3,78212751
asked Nov 18 '18 at 13:54
alisabzevarialisabzevari
3,78212751
asked Nov 18 '18 at 13:54
alisabzevarialisabzevari
3,78212751
asked Nov 18 '18 at 13:54
alisabzevarialisabzevari
3,78212751
asked Nov 18 '18 at 13:54
alisabzevarialisabzevari
3,78212751
3,78212751
The solution is likely similar to the answer on this issue reported to http4k: github.com/http4k/http4k/issues/183 where you have to create your own subtype ofConfigurableJackson... not the easiest way to have extensibility, but appears to be the option.
– Jayson Minard
Nov 18 '18 at 16:01
Yeah, I did the same. Creating another object subclassing fromConfigurableJackson. Would you mind creating an answer to my question?
– alisabzevari
Nov 18 '18 at 18:33
add a comment |
The solution is likely similar to the answer on this issue reported to http4k: github.com/http4k/http4k/issues/183 where you have to create your own subtype ofConfigurableJackson... not the easiest way to have extensibility, but appears to be the option.
– Jayson Minard
Nov 18 '18 at 16:01
Yeah, I did the same. Creating another object subclassing fromConfigurableJackson. Would you mind creating an answer to my question?
– alisabzevari
Nov 18 '18 at 18:33
The solution is likely similar to the answer on this issue reported to http4k: github.com/http4k/http4k/issues/183 where you have to create your own subtype of
ConfigurableJackson ... not the easiest way to have extensibility, but appears to be the option.– Jayson Minard
Nov 18 '18 at 16:01
The solution is likely similar to the answer on this issue reported to http4k: github.com/http4k/http4k/issues/183 where you have to create your own subtype of
ConfigurableJackson ... not the easiest way to have extensibility, but appears to be the option.– Jayson Minard
Nov 18 '18 at 16:01
Yeah, I did the same. Creating another object subclassing from
ConfigurableJackson. Would you mind creating an answer to my question?– alisabzevari
Nov 18 '18 at 18:33
Yeah, I did the same. Creating another object subclassing from
ConfigurableJackson. Would you mind creating an answer to my question?– alisabzevari
Nov 18 '18 at 18:33
add a comment |
2 Answers
2
active
oldest
votes
Since the ObjectMapper instance is private within ConfigurableJackson you cannot get at it after construction to do any configuration.
So you either need to construct your own direct instance of ConfigurableJackson and pass in a customized ObjectMapper or you need to subclass ConfigurableJackson with your own class. And then during the constructor, create an ObjectMapper (see example below) or intercept one being passed into your constructor and change its settings.
Whatever you do, be sure you do not break the http4k framework or anything else that might be using the same instance. You can see the defaults used by http4k declared in their source code:
object Jackson : ConfigurableJackson(ObjectMapper()
.registerModule(defaultKotlinModuleWithHttp4kSerialisers)
.disableDefaultTyping()
.configure(FAIL_ON_UNKNOWN_PROPERTIES, false)
.configure(FAIL_ON_IGNORED_PROPERTIES, false)
.configure(USE_BIG_DECIMAL_FOR_FLOATS, true)
.configure(USE_BIG_INTEGER_FOR_INTS, true)
)
You can use code similar to above to create your own instance.
See this thread for some conversation about this topic: https://github.com/http4k/http4k/issues/183
answered Nov 19 '18 at 4:37
Jayson MinardJayson Minard
39.5k17109173
add a comment |
You don't necessarily need to extend ConfigurableJackson - it's just that extending it is the most convenient way to do this (in our experience).
All configuration is done by tweaking the ObjectMapper instance which is injected into the ConfigurableJackson constructor - the ConfigurableJackson itself just provides the wrapper API around that mapper. The question is to do with standard configuration of Jackson, so you should seek answers to your specific questions (snake case etc) from the Jackson docs directly as http4k doesn't own that API.
answered Nov 18 '18 at 18:47
David DDavid D
543
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
Since the ObjectMapper instance is private within ConfigurableJackson you cannot get at it after construction to do any configuration.
So you either need to construct your own direct instance of ConfigurableJackson and pass in a customized ObjectMapper or you need to subclass ConfigurableJackson with your own class. And then during the constructor, create an ObjectMapper (see example below) or intercept one being passed into your constructor and change its settings.
Whatever you do, be sure you do not break the http4k framework or anything else that might be using the same instance. You can see the defaults used by http4k declared in their source code:
object Jackson : ConfigurableJackson(ObjectMapper()
.registerModule(defaultKotlinModuleWithHttp4kSerialisers)
.disableDefaultTyping()
.configure(FAIL_ON_UNKNOWN_PROPERTIES, false)
.configure(FAIL_ON_IGNORED_PROPERTIES, false)
.configure(USE_BIG_DECIMAL_FOR_FLOATS, true)
.configure(USE_BIG_INTEGER_FOR_INTS, true)
)
You can use code similar to above to create your own instance.
See this thread for some conversation about this topic: https://github.com/http4k/http4k/issues/183
answered Nov 19 '18 at 4:37
Jayson MinardJayson Minard
39.5k17109173
add a comment |
Since the ObjectMapper instance is private within ConfigurableJackson you cannot get at it after construction to do any configuration.
So you either need to construct your own direct instance of ConfigurableJackson and pass in a customized ObjectMapper or you need to subclass ConfigurableJackson with your own class. And then during the constructor, create an ObjectMapper (see example below) or intercept one being passed into your constructor and change its settings.
Whatever you do, be sure you do not break the http4k framework or anything else that might be using the same instance. You can see the defaults used by http4k declared in their source code:
object Jackson : ConfigurableJackson(ObjectMapper()
.registerModule(defaultKotlinModuleWithHttp4kSerialisers)
.disableDefaultTyping()
.configure(FAIL_ON_UNKNOWN_PROPERTIES, false)
.configure(FAIL_ON_IGNORED_PROPERTIES, false)
.configure(USE_BIG_DECIMAL_FOR_FLOATS, true)
.configure(USE_BIG_INTEGER_FOR_INTS, true)
)
You can use code similar to above to create your own instance.
See this thread for some conversation about this topic: https://github.com/http4k/http4k/issues/183
answered Nov 19 '18 at 4:37
Jayson MinardJayson Minard
39.5k17109173
add a comment |
Since the ObjectMapper instance is private within ConfigurableJackson you cannot get at it after construction to do any configuration.
So you either need to construct your own direct instance of ConfigurableJackson and pass in a customized ObjectMapper or you need to subclass ConfigurableJackson with your own class. And then during the constructor, create an ObjectMapper (see example below) or intercept one being passed into your constructor and change its settings.
Whatever you do, be sure you do not break the http4k framework or anything else that might be using the same instance. You can see the defaults used by http4k declared in their source code:
object Jackson : ConfigurableJackson(ObjectMapper()
.registerModule(defaultKotlinModuleWithHttp4kSerialisers)
.disableDefaultTyping()
.configure(FAIL_ON_UNKNOWN_PROPERTIES, false)
.configure(FAIL_ON_IGNORED_PROPERTIES, false)
.configure(USE_BIG_DECIMAL_FOR_FLOATS, true)
.configure(USE_BIG_INTEGER_FOR_INTS, true)
)
You can use code similar to above to create your own instance.
See this thread for some conversation about this topic: https://github.com/http4k/http4k/issues/183
answered Nov 19 '18 at 4:37
Jayson MinardJayson Minard
39.5k17109173
Since the ObjectMapper instance is private within ConfigurableJackson you cannot get at it after construction to do any configuration.
So you either need to construct your own direct instance of ConfigurableJackson and pass in a customized ObjectMapper or you need to subclass ConfigurableJackson with your own class. And then during the constructor, create an ObjectMapper (see example below) or intercept one being passed into your constructor and change its settings.
Whatever you do, be sure you do not break the http4k framework or anything else that might be using the same instance. You can see the defaults used by http4k declared in their source code:
object Jackson : ConfigurableJackson(ObjectMapper()
.registerModule(defaultKotlinModuleWithHttp4kSerialisers)
.disableDefaultTyping()
.configure(FAIL_ON_UNKNOWN_PROPERTIES, false)
.configure(FAIL_ON_IGNORED_PROPERTIES, false)
.configure(USE_BIG_DECIMAL_FOR_FLOATS, true)
.configure(USE_BIG_INTEGER_FOR_INTS, true)
)
You can use code similar to above to create your own instance.
See this thread for some conversation about this topic: https://github.com/http4k/http4k/issues/183
answered Nov 19 '18 at 4:37
Jayson MinardJayson Minard
39.5k17109173
edited Nov 19 '18 at 5:34
answered Nov 19 '18 at 4:37
Jayson MinardJayson Minard
39.5k17109173
answered Nov 19 '18 at 4:37
Jayson MinardJayson Minard
39.5k17109173
answered Nov 19 '18 at 4:37
Jayson MinardJayson Minard
39.5k17109173
39.5k17109173
add a comment |
add a comment |
You don't necessarily need to extend ConfigurableJackson - it's just that extending it is the most convenient way to do this (in our experience).
All configuration is done by tweaking the ObjectMapper instance which is injected into the ConfigurableJackson constructor - the ConfigurableJackson itself just provides the wrapper API around that mapper. The question is to do with standard configuration of Jackson, so you should seek answers to your specific questions (snake case etc) from the Jackson docs directly as http4k doesn't own that API.
answered Nov 18 '18 at 18:47
David DDavid D
543
add a comment |
You don't necessarily need to extend ConfigurableJackson - it's just that extending it is the most convenient way to do this (in our experience).
All configuration is done by tweaking the ObjectMapper instance which is injected into the ConfigurableJackson constructor - the ConfigurableJackson itself just provides the wrapper API around that mapper. The question is to do with standard configuration of Jackson, so you should seek answers to your specific questions (snake case etc) from the Jackson docs directly as http4k doesn't own that API.
answered Nov 18 '18 at 18:47
David DDavid D
543
add a comment |
You don't necessarily need to extend ConfigurableJackson - it's just that extending it is the most convenient way to do this (in our experience).
All configuration is done by tweaking the ObjectMapper instance which is injected into the ConfigurableJackson constructor - the ConfigurableJackson itself just provides the wrapper API around that mapper. The question is to do with standard configuration of Jackson, so you should seek answers to your specific questions (snake case etc) from the Jackson docs directly as http4k doesn't own that API.
answered Nov 18 '18 at 18:47
David DDavid D
543
You don't necessarily need to extend ConfigurableJackson - it's just that extending it is the most convenient way to do this (in our experience).
All configuration is done by tweaking the ObjectMapper instance which is injected into the ConfigurableJackson constructor - the ConfigurableJackson itself just provides the wrapper API around that mapper. The question is to do with standard configuration of Jackson, so you should seek answers to your specific questions (snake case etc) from the Jackson docs directly as http4k doesn't own that API.
answered Nov 18 '18 at 18:47
David DDavid D
543
answered Nov 18 '18 at 18:47
David DDavid D
543
answered Nov 18 '18 at 18:47
David DDavid D
543
answered Nov 18 '18 at 18:47
David DDavid D
543
543
add a comment |
add a comment |
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The solution is likely similar to the answer on this issue reported to http4k: github.com/http4k/http4k/issues/183 where you have to create your own subtype of
ConfigurableJackson... not the easiest way to have extensibility, but appears to be the option.– Jayson Minard
Nov 18 '18 at 16:01
Yeah, I did the same. Creating another object subclassing from
ConfigurableJackson. Would you mind creating an answer to my question?– alisabzevari
Nov 18 '18 at 18:33