Jackson convertValue does not use JavaTimeModule
If I make a POJO class and convert the whole objects to Json using the mapper.writeValueAsString() method, or let Spring handle the conversion, the JavaTimeModule is used appropriately and If my POJO had an OffsetDateTime in it, it will get converted to a string like 2018-10-16T13:49:34.564748+02:00.
For some scenarios, I need to use the mapper's T convertValue(Object fromValue, Class<T> toValueType) method and build an ObjectNode by hand. The method does not convert the OffsetDateTime objects the same way as the writeValueAsString.
I construct my Jackson mapper like this:
ObjectMapper defaultMapperObj = new ObjectMapper();
defaultMapperObj.registerModule(new GuavaModule());
defaultMapperObj.registerModule(new Jdk8Module());
defaultMapperObj.registerModule(new JavaTimeModule());
defaultMapperObj.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
Using the mapper, I can easily convert even Lists to their Json strings:
mapper.convertValue(
Arrays.asList(1,2,23), JsonNode.class
)
Results in:
ArrayNode: [1,2,23]
But If I call this:
mappper.convertValue(OffsetDateTime.now(), JsonNode.class)
I get a DecimalNode: 1542287917.2141993
java json jackson
asked Nov 15 '18 at 13:19
appl3rappl3r
83711337
add a comment |
If I make a POJO class and convert the whole objects to Json using the mapper.writeValueAsString() method, or let Spring handle the conversion, the JavaTimeModule is used appropriately and If my POJO had an OffsetDateTime in it, it will get converted to a string like 2018-10-16T13:49:34.564748+02:00.
For some scenarios, I need to use the mapper's T convertValue(Object fromValue, Class<T> toValueType) method and build an ObjectNode by hand. The method does not convert the OffsetDateTime objects the same way as the writeValueAsString.
I construct my Jackson mapper like this:
ObjectMapper defaultMapperObj = new ObjectMapper();
defaultMapperObj.registerModule(new GuavaModule());
defaultMapperObj.registerModule(new Jdk8Module());
defaultMapperObj.registerModule(new JavaTimeModule());
defaultMapperObj.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
Using the mapper, I can easily convert even Lists to their Json strings:
mapper.convertValue(
Arrays.asList(1,2,23), JsonNode.class
)
Results in:
ArrayNode: [1,2,23]
But If I call this:
mappper.convertValue(OffsetDateTime.now(), JsonNode.class)
I get a DecimalNode: 1542287917.2141993
java json jackson
asked Nov 15 '18 at 13:19
appl3rappl3r
83711337
add a comment |
If I make a POJO class and convert the whole objects to Json using the mapper.writeValueAsString() method, or let Spring handle the conversion, the JavaTimeModule is used appropriately and If my POJO had an OffsetDateTime in it, it will get converted to a string like 2018-10-16T13:49:34.564748+02:00.
For some scenarios, I need to use the mapper's T convertValue(Object fromValue, Class<T> toValueType) method and build an ObjectNode by hand. The method does not convert the OffsetDateTime objects the same way as the writeValueAsString.
I construct my Jackson mapper like this:
ObjectMapper defaultMapperObj = new ObjectMapper();
defaultMapperObj.registerModule(new GuavaModule());
defaultMapperObj.registerModule(new Jdk8Module());
defaultMapperObj.registerModule(new JavaTimeModule());
defaultMapperObj.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
Using the mapper, I can easily convert even Lists to their Json strings:
mapper.convertValue(
Arrays.asList(1,2,23), JsonNode.class
)
Results in:
ArrayNode: [1,2,23]
But If I call this:
mappper.convertValue(OffsetDateTime.now(), JsonNode.class)
I get a DecimalNode: 1542287917.2141993
java json jackson
asked Nov 15 '18 at 13:19
appl3rappl3r
83711337
If I make a POJO class and convert the whole objects to Json using the mapper.writeValueAsString() method, or let Spring handle the conversion, the JavaTimeModule is used appropriately and If my POJO had an OffsetDateTime in it, it will get converted to a string like 2018-10-16T13:49:34.564748+02:00.
For some scenarios, I need to use the mapper's T convertValue(Object fromValue, Class<T> toValueType) method and build an ObjectNode by hand. The method does not convert the OffsetDateTime objects the same way as the writeValueAsString.
I construct my Jackson mapper like this:
ObjectMapper defaultMapperObj = new ObjectMapper();
defaultMapperObj.registerModule(new GuavaModule());
defaultMapperObj.registerModule(new Jdk8Module());
defaultMapperObj.registerModule(new JavaTimeModule());
defaultMapperObj.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
Using the mapper, I can easily convert even Lists to their Json strings:
mapper.convertValue(
Arrays.asList(1,2,23), JsonNode.class
)
Results in:
ArrayNode: [1,2,23]
But If I call this:
mappper.convertValue(OffsetDateTime.now(), JsonNode.class)
I get a DecimalNode: 1542287917.2141993
java json jackson
java json jackson
asked Nov 15 '18 at 13:19
appl3rappl3r
83711337
asked Nov 15 '18 at 13:19
appl3rappl3r
83711337
edited Nov 15 '18 at 14:21
appl3r
asked Nov 15 '18 at 13:19
appl3rappl3r
83711337
asked Nov 15 '18 at 13:19
appl3rappl3r
83711337
asked Nov 15 '18 at 13:19
appl3rappl3r
83711337
83711337
add a comment |
add a comment |
1 Answer
1
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From the JavaTimeModule documentation:
Most
java.timetypes are serialized as numbers (integers or decimals as appropriate) if theSerializationFeature.WRITE_DATES_AS_TIMESTAMPSfeature is enabled, and otherwise are serialized in standard ISO-8601 string representation. [...]
So, to achieve the desired result, disable the SerializationFeature.WRITE_DATES_AS_TIMESTAMPS feature in your ObjectMapper instance:
mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
answered Nov 15 '18 at 13:22
cassiomolincassiomolin
59.4k17113189
add a comment |
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1 Answer
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1 Answer
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From the JavaTimeModule documentation:
Most
java.timetypes are serialized as numbers (integers or decimals as appropriate) if theSerializationFeature.WRITE_DATES_AS_TIMESTAMPSfeature is enabled, and otherwise are serialized in standard ISO-8601 string representation. [...]
So, to achieve the desired result, disable the SerializationFeature.WRITE_DATES_AS_TIMESTAMPS feature in your ObjectMapper instance:
mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
answered Nov 15 '18 at 13:22
cassiomolincassiomolin
59.4k17113189
add a comment |
From the JavaTimeModule documentation:
Most
java.timetypes are serialized as numbers (integers or decimals as appropriate) if theSerializationFeature.WRITE_DATES_AS_TIMESTAMPSfeature is enabled, and otherwise are serialized in standard ISO-8601 string representation. [...]
So, to achieve the desired result, disable the SerializationFeature.WRITE_DATES_AS_TIMESTAMPS feature in your ObjectMapper instance:
mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
answered Nov 15 '18 at 13:22
cassiomolincassiomolin
59.4k17113189
add a comment |
From the JavaTimeModule documentation:
Most
java.timetypes are serialized as numbers (integers or decimals as appropriate) if theSerializationFeature.WRITE_DATES_AS_TIMESTAMPSfeature is enabled, and otherwise are serialized in standard ISO-8601 string representation. [...]
So, to achieve the desired result, disable the SerializationFeature.WRITE_DATES_AS_TIMESTAMPS feature in your ObjectMapper instance:
mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
answered Nov 15 '18 at 13:22
cassiomolincassiomolin
59.4k17113189
From the JavaTimeModule documentation:
Most
java.timetypes are serialized as numbers (integers or decimals as appropriate) if theSerializationFeature.WRITE_DATES_AS_TIMESTAMPSfeature is enabled, and otherwise are serialized in standard ISO-8601 string representation. [...]
So, to achieve the desired result, disable the SerializationFeature.WRITE_DATES_AS_TIMESTAMPS feature in your ObjectMapper instance:
mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
answered Nov 15 '18 at 13:22
cassiomolincassiomolin
59.4k17113189
edited Nov 15 '18 at 13:30
answered Nov 15 '18 at 13:22
cassiomolincassiomolin
59.4k17113189
answered Nov 15 '18 at 13:22
cassiomolincassiomolin
59.4k17113189
answered Nov 15 '18 at 13:22
cassiomolincassiomolin
59.4k17113189
59.4k17113189
add a comment |
add a comment |
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