Examples of com.google.gson.JsonParseException

com.google.gson.JsonParseException
This exception is raised if there is a serious issue that occurs during parsing of a Json string. One of the main usages for this class is for the Gson infrastructure. If the incoming Json is bad/malicious, an instance of this exception is raised.
This exception is a {@link RuntimeException} because it is exposed to the client. Using a{@link RuntimeException} avoids bad coding practices on the client side where they catch theexception and do nothing. It is often the case that you want to blow up if there is a parsing error (i.e. often clients do not know how to recover from a {@link JsonParseException}.
@author Inderjeet Singh @author Joel Leitch

    }


    @Override
    public Date deserialize (JsonElement json, Type type, JsonDeserializationContext context) throws JsonParseException {
        if (!(json instanceof JsonPrimitive)) {
            throw new JsonParseException("Date was not string: " + json);
        }
        if (type != Date.class) {
            throw new IllegalArgumentException(getClass() + " cannot deserialize to " + type);
        }
        String value = json.getAsString();

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                    if (kind != null) {
                        return kind;
                    }
                }
            }
            throw new JsonParseException(MessageFormat.format(
                    "Invalid JobStatus.Kind: {0}",
                    json));
        }

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    @Override
    public Vector deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
        JsonArray jsonArray = json.getAsJsonArray();
        if (jsonArray.size() != 3) {
            throw new JsonParseException("Expected array of 3 length for Vector");
        }


        double x = jsonArray.get(0).getAsDouble();
        double y = jsonArray.get(1).getAsDouble();
        double z = jsonArray.get(2).getAsDouble();

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      String encodedData = properties.get(Attachment.DATA);
      if (encodedData != null) {
        try {
          data = Base64.decodeBase64(encodedData.getBytes("UTF-8"));
        } catch (UnsupportedEncodingException e) {
          throw new JsonParseException("Couldn't convert to utf-8", e);
        }
      }
      result = new Attachment(properties, data);
    } else if (type == ElementType.LINE) {
      result = new Line(properties);

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    JsonArray events = new JsonArray();
    for (Event event : src.getEvents()) {
      try {
        events.add(EventSerializer.serialize(event, context));
      } catch (EventSerializationException e) {
        throw new JsonParseException(e);
      }
    }
    result.add(EVENTS_TAG, events);


    result.add(WAVELET_TAG, context.serialize(src.getWaveletData()));

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    for (JsonElement element : eventsArray) {
      JsonObject eventObject = element.getAsJsonObject();
      try {
        events.add(EventSerializer.deserialize(wavelet, result, eventObject, context));
      } catch (EventSerializationException e) {
        throw new JsonParseException(e.getMessage());
      }
    }
    result.setEvents(events);
    return result;
  }

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  private static class MapDecoder implements JsonDeserializer<Map<String, String>> {
    @Override
    public Map<String, String> deserialize(JsonElement arg0, Type arg1,
        JsonDeserializationContext arg2) throws JsonParseException {
      if (!arg0.isJsonObject()) {
        throw new JsonParseException(arg0.toString() + " is not Json Object, cannot convert to map");
      }
      JsonObject objs = arg0.getAsJsonObject();
      Map<String, String> map = new HashMap<String ,String>();
      for (Entry<String, JsonElement> e : objs.entrySet()) {
        if (!e.getValue().isJsonPrimitive()) {
          throw new JsonParseException(e.getValue().toString() + " is not a Json primitive," + arg0 + " can not convert to map");
        }
        map.put(e.getKey(), e.getValue().getAsString());
      }
      return map;
    }

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                JsonDeserializationContext context) throws JsonParseException {
            JsonObject jsonObject = jsonElement.getAsJsonObject();
            NatRule natRule = null;
            
            if (!jsonObject.has("type")) {
                throw new JsonParseException("Deserializing as a NatRule, but no type present in the json object");
            }
            
            String natRuleType = jsonObject.get("type").getAsString();
            if ("SourceNatRule".equals(natRuleType)) {
                return context.deserialize(jsonElement, SourceNatRule.class);
            }
            else if ("DestinationNatRule".equals(natRuleType)) {
                return context.deserialize(jsonElement, DestinationNatRule.class);
            }
            
            throw new JsonParseException("Failed to deserialize type \"" + natRuleType + "\"");
        }

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        }
        // Invoke the build method to return the final proto
        return (GeneratedMessage) getCachedMethod(builderClass, "build")
        .invoke(protoBuilder);
      } catch (SecurityException e) {
        throw new JsonParseException(e);
      } catch (NoSuchMethodException e) {
        throw new JsonParseException(e);
      } catch (IllegalArgumentException e) {
        throw new JsonParseException(e);
      } catch (IllegalAccessException e) {
        throw new JsonParseException(e);
      } catch (InvocationTargetException e) {
        throw new JsonParseException(e);
      } catch (NoSuchFieldException e) {
        throw new JsonParseException(e);
      }
    }

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    // (drt24) Since android ships with an ancient version of org.apache.commons.codec which
    // overrides any version we ship we have to use old deprecated methods.
    if (Base64.isArrayByteBase64(jsonBytes)) {
      return ByteString.copyFrom(Base64.decodeBase64(jsonBytes));
    } else {
      throw new JsonParseException("JSON element is not correctly base64 encoded.");
    }
  }

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