How to prevent PatchUpdateException on json deserialization?
1
I'm parsing json with custom desereailizer. It reads JsonNode and then deserializes entity from json by ObjectMapper.
public static class CustomDeserializer extends StdDeserializer<Custom> implements ResolvableDeserializer {
private final JsonDeserializer<?> defaultDeserializer;
public CustomDeserializer(JsonDeserializer<?> defaultDeserializer) {
super(Custom.class);
this.defaultDeserializer = defaultDeserializer;
}
@Override
public Custom deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException {
final ObjectNode node = jp.readValueAsTree();
// some node structure validation
try (final TreeTraversingParser newJsonParser = new TreeTraversingParser(node)) {
newJsonParser.nextToken();
return (Custom) defaultDeserializer.deserialize(newJsonParser, ctxt);
}
}
@Override
public void resolve(DeserializationContext ctxt) throws JsonMappingException {
((ResolvableDeserializer) defaultDeserializer).resolve(ctxt);
}
}
On some requests it works, on other throws
com.fasterxml.jackson.core.json.UTF8StreamJsonParser cannot be cast to com.fasterxml.jackson.databind.node.TreeTraversingParser
or
m.fasterxml.jackson.core.json.ReaderBasedJsonParser cannot be cast to com.fasterxml.jackson.databind.node.TreeTraversingParser
How to prevent that case?
java json spring jackson
asked Dec 31 '18 at 16:59
Oleg ShavrovOleg Shavrov
4116
add a comment |
1
I'm parsing json with custom desereailizer. It reads JsonNode and then deserializes entity from json by ObjectMapper.
public static class CustomDeserializer extends StdDeserializer<Custom> implements ResolvableDeserializer {
private final JsonDeserializer<?> defaultDeserializer;
public CustomDeserializer(JsonDeserializer<?> defaultDeserializer) {
super(Custom.class);
this.defaultDeserializer = defaultDeserializer;
}
@Override
public Custom deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException {
final ObjectNode node = jp.readValueAsTree();
// some node structure validation
try (final TreeTraversingParser newJsonParser = new TreeTraversingParser(node)) {
newJsonParser.nextToken();
return (Custom) defaultDeserializer.deserialize(newJsonParser, ctxt);
}
}
@Override
public void resolve(DeserializationContext ctxt) throws JsonMappingException {
((ResolvableDeserializer) defaultDeserializer).resolve(ctxt);
}
}
On some requests it works, on other throws
com.fasterxml.jackson.core.json.UTF8StreamJsonParser cannot be cast to com.fasterxml.jackson.databind.node.TreeTraversingParser
or
m.fasterxml.jackson.core.json.ReaderBasedJsonParser cannot be cast to com.fasterxml.jackson.databind.node.TreeTraversingParser
How to prevent that case?
java json spring jackson
asked Dec 31 '18 at 16:59
Oleg ShavrovOleg Shavrov
4116
add a comment |
1
1
1
I'm parsing json with custom desereailizer. It reads JsonNode and then deserializes entity from json by ObjectMapper.
public static class CustomDeserializer extends StdDeserializer<Custom> implements ResolvableDeserializer {
private final JsonDeserializer<?> defaultDeserializer;
public CustomDeserializer(JsonDeserializer<?> defaultDeserializer) {
super(Custom.class);
this.defaultDeserializer = defaultDeserializer;
}
@Override
public Custom deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException {
final ObjectNode node = jp.readValueAsTree();
// some node structure validation
try (final TreeTraversingParser newJsonParser = new TreeTraversingParser(node)) {
newJsonParser.nextToken();
return (Custom) defaultDeserializer.deserialize(newJsonParser, ctxt);
}
}
@Override
public void resolve(DeserializationContext ctxt) throws JsonMappingException {
((ResolvableDeserializer) defaultDeserializer).resolve(ctxt);
}
}
On some requests it works, on other throws
com.fasterxml.jackson.core.json.UTF8StreamJsonParser cannot be cast to com.fasterxml.jackson.databind.node.TreeTraversingParser
or
m.fasterxml.jackson.core.json.ReaderBasedJsonParser cannot be cast to com.fasterxml.jackson.databind.node.TreeTraversingParser
How to prevent that case?
java json spring jackson
asked Dec 31 '18 at 16:59
Oleg ShavrovOleg Shavrov
4116
I'm parsing json with custom desereailizer. It reads JsonNode and then deserializes entity from json by ObjectMapper.
public static class CustomDeserializer extends StdDeserializer<Custom> implements ResolvableDeserializer {
private final JsonDeserializer<?> defaultDeserializer;
public CustomDeserializer(JsonDeserializer<?> defaultDeserializer) {
super(Custom.class);
this.defaultDeserializer = defaultDeserializer;
}
@Override
public Custom deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException {
final ObjectNode node = jp.readValueAsTree();
// some node structure validation
try (final TreeTraversingParser newJsonParser = new TreeTraversingParser(node)) {
newJsonParser.nextToken();
return (Custom) defaultDeserializer.deserialize(newJsonParser, ctxt);
}
}
@Override
public void resolve(DeserializationContext ctxt) throws JsonMappingException {
((ResolvableDeserializer) defaultDeserializer).resolve(ctxt);
}
}
On some requests it works, on other throws
com.fasterxml.jackson.core.json.UTF8StreamJsonParser cannot be cast to com.fasterxml.jackson.databind.node.TreeTraversingParser
or
m.fasterxml.jackson.core.json.ReaderBasedJsonParser cannot be cast to com.fasterxml.jackson.databind.node.TreeTraversingParser
How to prevent that case?
java json spring jackson
java json spring jackson
asked Dec 31 '18 at 16:59
Oleg ShavrovOleg Shavrov
4116
asked Dec 31 '18 at 16:59
Oleg ShavrovOleg Shavrov
4116
asked Dec 31 '18 at 16:59
Oleg ShavrovOleg Shavrov
4116
asked Dec 31 '18 at 16:59
Oleg ShavrovOleg Shavrov
4116
asked Dec 31 '18 at 16:59
Oleg ShavrovOleg Shavrov
4116
4116
add a comment |
add a comment |
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