com.fasterxml.jackson.databind.JsonDeserializer#deserializeWithType ( )源码实例Demo

下面列出了com.fasterxml.jackson.databind.JsonDeserializer#deserializeWithType ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： jackson-datatypes-collections 文件： GuavaMultisetDeserializer.java

@Override
protected T _deserializeContents(JsonParser p, DeserializationContext ctxt) throws IOException,
        JsonProcessingException {
    JsonDeserializer<?> valueDes = _valueDeserializer;
    JsonToken t;
    final TypeDeserializer typeDeser = _valueTypeDeserializer;
    T set = createMultiset();

    while ((t = p.nextToken()) != JsonToken.END_ARRAY) {
        Object value;

        if (t == JsonToken.VALUE_NULL) {
            if (_skipNullValues) {
                continue;
            }
            value = _nullProvider.getNullValue(ctxt);
        } else if (typeDeser == null) {
            value = valueDes.deserialize(p, ctxt);
        } else {
            value = valueDes.deserializeWithType(p, ctxt, typeDeser);
        }
        set.add(value);
    }
    return set;
}

源代码2 项目： caravan 文件： CustomCollectionDeserializer.java

/**
 * Helper method called when current token is no START_ARRAY. Will either
 * throw an exception, or try to handle value as if member of implicit
 * array, depending on configuration.
 */
@SuppressWarnings("unchecked")
protected final Collection<Object> handleNonArray(JsonParser p, DeserializationContext ctxt,
    Collection<Object> result)
    throws IOException {
  // Implicit arrays from single values?
  boolean canWrap = (_unwrapSingle == Boolean.TRUE) ||
      ((_unwrapSingle == null) &&
          ctxt.isEnabled(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY));
  if (!canWrap) {
    return (Collection<Object>) ctxt.handleUnexpectedToken(_containerType.getRawClass(), p);
  }
  JsonDeserializer<Object> valueDes = _valueDeserializer;
  final TypeDeserializer typeDeser = _valueTypeDeserializer;
  JsonToken t = p.getCurrentToken();

  Object value;

  try {
    if (t == JsonToken.VALUE_NULL) {
      // 03-Feb-2017, tatu: Hmmh. I wonder... let's try skipping here, too
      if (_skipNullValues) {
        return result;
      }
      value = _nullProvider.getNullValue(ctxt);
    } else if (typeDeser == null) {
      value = valueDes.deserialize(p, ctxt);
    } else {
      value = valueDes.deserializeWithType(p, ctxt, typeDeser);
    }
  } catch (Exception e) {
    // note: pass Object.class, not Object[].class, as we need element type for error info
    throw JsonMappingException.wrapWithPath(e, Object.class, result.size());
  }
  result.add(value);
  return result;
}

源代码3 项目： jackson-datatypes-collections 文件： GuavaImmutableCollectionDeserializer.java

@Override
protected T _deserializeContents(JsonParser p, DeserializationContext ctxt)
        throws IOException, JsonProcessingException
{
    JsonDeserializer<?> valueDes = _valueDeserializer;
    JsonToken t;
    final TypeDeserializer typeDeser = _valueTypeDeserializer;
    // No way to pass actual type parameter; but does not matter, just
    // compiler-time fluff:
    ImmutableCollection.Builder<Object> builder = createBuilder();

    while ((t = p.nextToken()) != JsonToken.END_ARRAY) {
        Object value;

        if (t == JsonToken.VALUE_NULL) {
            if (_skipNullValues) {
                continue;
            }
            value = _resolveNullToValue(ctxt);
        } else if (typeDeser == null) {
            value = valueDes.deserialize(p, ctxt);
        } else {
            value = valueDes.deserializeWithType(p, ctxt, typeDeser);
        }
        builder.add(value);
    }
    // No class outside of the package will be able to subclass us,
    // and we provide the proper builder for the subclasses we implement.
    @SuppressWarnings("unchecked")
    T collection = (T) builder.build();
    return collection;
}

源代码4 项目： caravan 文件： CustomCollectionDeserializer.java

@SuppressWarnings("unchecked")
@Override
public Object deserialize(JsonParser p, DeserializationContext ctxt,
    Object result)
    throws IOException {
  // Ok: must point to START_ARRAY (or equivalent)
  if (!p.isExpectedStartArrayToken()) {
    return handleNonArray(p, ctxt, (Collection<Object>) result);
  }
  // [databind#631]: Assign current value, to be accessible by custom serializers
  p.setCurrentValue(result);

  JsonDeserializer<Object> valueDes = _valueDeserializer;
  final TypeDeserializer typeDeser = _valueTypeDeserializer;
  CollectionReferringAccumulator referringAccumulator =
      (valueDes.getObjectIdReader() == null) ? null :
          new CollectionReferringAccumulator(_containerType.getContentType().getRawClass(), (Collection<Object>) result);

  JsonToken t;
  while ((t = p.nextToken()) != JsonToken.END_ARRAY) {
    try {
      Object value;
      if (t == JsonToken.VALUE_NULL) {
        if (_skipNullValues) {
          continue;
        }
        value = _nullProvider.getNullValue(ctxt);
      } else if (typeDeser == null) {
        value = valueDes.deserialize(p, ctxt);
      } else {
        value = valueDes.deserializeWithType(p, ctxt, typeDeser);
      }
      if (referringAccumulator != null) {
        referringAccumulator.add(value);
      } else {
        ((Collection<Object>) result).add(value);
      }
    } catch (UnresolvedForwardReference reference) {
      if (referringAccumulator == null) {
        throw JsonMappingException
            .from(p, "Unresolved forward reference but no identity info", reference);
      }
      Referring ref = referringAccumulator.handleUnresolvedReference(reference);
      reference.getRoid().appendReferring(ref);
    } catch (Exception e) {
      boolean wrap = (ctxt == null) || ctxt.isEnabled(DeserializationFeature.WRAP_EXCEPTIONS);
      if (!wrap) {
        ClassUtil.throwIfRTE(e);
      }
      throw JsonMappingException.wrapWithPath(e, result, ((Collection<Object>) result).size());
    }
  }
  return result;
}

源代码5 项目： jackson-datatypes-collections 文件： GuavaImmutableMapDeserializer.java

@Override
protected T _deserializeEntries(JsonParser p, DeserializationContext ctxt)
    throws IOException, JsonProcessingException
{
    final KeyDeserializer keyDes = _keyDeserializer;
    final JsonDeserializer<?> valueDes = _valueDeserializer;
    final TypeDeserializer typeDeser = _valueTypeDeserializer;

    ImmutableMap.Builder<Object, Object> builder = createBuilder();
    for (; p.currentToken() == JsonToken.FIELD_NAME; p.nextToken()) {
        // Must point to field name now
        String fieldName = p.currentName();
        Object key = (keyDes == null) ? fieldName : keyDes.deserializeKey(fieldName, ctxt);
        // And then the value...
        JsonToken t = p.nextToken();
        // 28-Nov-2010, tatu: Should probably support "ignorable properties" in future...
        Object value;            
        if (t == JsonToken.VALUE_NULL) {
            if (!_skipNullValues) {
                value = _nullProvider.getNullValue(ctxt);
                // 14-Sep-2015, tatu: As per [datatype-guava#52], avoid exception due to null
                // TODO: allow reporting problem via a feature, in future?
                if (value != null) {
                    builder.put(key, value);
                }
            }
            continue;
        }
        if (typeDeser == null) {
            value = valueDes.deserialize(p, ctxt);
        } else {
            value = valueDes.deserializeWithType(p, ctxt, typeDeser);
        }
        builder.put(key, value);
    }
    // No class outside of the package will be able to subclass us,
    // and we provide the proper builder for the subclasses we implement.
    @SuppressWarnings("unchecked")
    T map = (T) builder.build();
    return map;
}

源代码6 项目： allure2 文件： ListDeserializer.java

@Override
public Collection<Object> deserialize(JsonParser p, DeserializationContext ctxt,
                                      Collection<Object> result)
        throws IOException {
    // Ok: must point to START_ARRAY (or equivalent)
    if (!p.isExpectedStartArrayToken()) {
        return result;
    }
    // [databind#631]: Assign current value, to be accessible by custom serializers
    p.setCurrentValue(result);

    JsonDeserializer<Object> valueDes = _valueDeserializer;
    final TypeDeserializer typeDeser = _valueTypeDeserializer;
    CollectionReferringAccumulator referringAccumulator =
            (valueDes.getObjectIdReader() == null) ? null :
                    new CollectionReferringAccumulator(_containerType.getContentType().getRawClass(), result);

    JsonToken t;
    while ((t = p.nextToken()) != JsonToken.END_ARRAY) {
        try {
            Object value;
            if (t == JsonToken.VALUE_NULL) {
                if (_skipNullValues) {
                    continue;
                }
                value = _nullProvider.getNullValue(ctxt);
            } else if (typeDeser == null) {
                value = valueDes.deserialize(p, ctxt);
            } else {
                value = valueDes.deserializeWithType(p, ctxt, typeDeser);
            }
            if (referringAccumulator != null) {
                referringAccumulator.add(value);
            } else {
                result.add(value);
            }
        } catch (UnresolvedForwardReference reference) {
            if (referringAccumulator == null) {
                throw JsonMappingException
                        .from(p, "Unresolved forward reference but no identity info", reference);
            }
            ReadableObjectId.Referring ref = referringAccumulator.handleUnresolvedReference(reference);
            reference.getRoid().appendReferring(ref);
        } catch (Exception e) {
            boolean wrap = (ctxt == null) || ctxt.isEnabled(DeserializationFeature.WRAP_EXCEPTIONS);
            if (!wrap) {
                ClassUtil.throwIfRTE(e);
            }
            throw JsonMappingException.wrapWithPath(e, result, result.size());
        }
    }
    return result;
}

方法所在类

com.fasterxml.jackson.databind.JsonDeserializer