com.fasterxml.jackson.core.JsonProcessingException#getLocation ( )源码实例Demo

private Response fromJsonProcessingException(JsonProcessingException e) {
    StringBuilder msgBuilder = new StringBuilder();
    if (e.getOriginalMessage() != null) {
        msgBuilder.append(e.getOriginalMessage());
    } else {
        msgBuilder.append("JSON processing error");
    }
    JsonLocation location = e.getLocation();
    if (location != null) {
        msgBuilder.append(" location: [line: ").append(location.getLineNr())
                .append(", column: ").append(location.getColumnNr()).append(']');
    }

    ErrorResponse errorResponse = ErrorResponse.newError(HttpServletResponse.SC_BAD_REQUEST, msgBuilder.toString())
            .clientRequest(httpServletRequest)
            .serverContext()
            .exceptionContext(e)
            .build();
    return Response.status(Status.BAD_REQUEST).entity(errorResponse).build();
}
 

private static Map<String,Object> readFragment(File file, String ext) throws IOException {
    ObjectMapper mapper = new ObjectMapper("json".equals(ext) ? new JsonFactory() : new YAMLFactory());
    TypeReference<HashMap<String,Object>> typeRef = new TypeReference<HashMap<String,Object>>() {};
    try {
        Map<String, Object> ret = mapper.readValue(file, typeRef);
        return ret != null ? ret : new HashMap<>();
    } catch (JsonProcessingException e) {
        throw new JsonMappingException(String.format("[%s] %s", file, e.getMessage()), e.getLocation(), e);
    }
}
 

private Map<String, Object> appendJacksonErrorDetails(JsonProcessingException cause) {
    Map<String, Object> out = new TreeMap<>();

    JsonLocation location = cause.getLocation();
    if (location != null) {
        out.put("errorLocation", "line: " + location.getLineNr() + ", column: " + location.getColumnNr());
        if (location.getSourceRef() != null && location.getSourceRef() instanceof String) {
            out.put("document", location.getSourceRef());
        }
    }

    if (cause instanceof JsonMappingException) {
        JsonMappingException mappingEx = (JsonMappingException) cause;
        if (mappingEx.getPathReference() != null) {
            out.put("pathReference", mappingEx.getPathReference());
        }

        if (cause instanceof InvalidFormatException) {
            InvalidFormatException formEx = (InvalidFormatException) cause;
            if (formEx.getTargetType() != null) {
                out.put("targetType", formEx.getTargetType().getName());
            }
        } else if (cause instanceof PropertyBindingException) {
            PropertyBindingException bindingEx = (PropertyBindingException) cause;
            if (bindingEx.getPropertyName() != null) {
                out.put("property", bindingEx.getPropertyName());
                out.put("knownProperties", bindingEx.getKnownPropertyIds());
            }
        }
    }

    return out;
}
 

public static JsonNode build(final JsonProcessingException e,
    final boolean crlf)
{
    final JsonLocation location = e.getLocation();
    final ObjectNode ret = JsonNodeFactory.instance.objectNode();

    /*
     * Unfortunately, for some reason, Jackson botches the column number in
     * its JsonPosition -- I cannot figure out why exactly. However, it does
     * have a correct offset into the buffer.
     *
     * The problem is that if the input has CR/LF line terminators, its
     * offset will be "off" by the number of lines minus 1 with regards to
     * what JavaScript sees as positions in text areas. Make the necessary
     * adjustments so that the caret jumps at the correct position in this
     * case.
     */
    final int lineNr = location.getLineNr();
    int offset = (int) location.getCharOffset();
    if (crlf)
        offset = offset - lineNr + 1;
    ret.put(LINE, lineNr);
    ret.put(OFFSET, offset);

    // Finally, put the message
    ret.put(MESSAGE, e.getOriginalMessage());
    return ret;
}
 

public static JsonReadException fromJackson(JsonProcessingException ex)
{
    String message = ex.getMessage();

    // Strip off location.
    int locPos = message.lastIndexOf(" at [Source");
    if (locPos >= 0) {
        message = message.substring(0, locPos);
    }

    return new JsonReadException(message, ex.getLocation());
}
 

public MalformedJsonException(JsonProcessingException cause) {
    super(cause);
    this.location = cause.getLocation();
}
 

public static SwaggerError newJsonError(JsonProcessingException exception) {
    int line = (exception.getLocation() != null) ? exception.getLocation().getLineNr() : 1;
    return new SwaggerError(line, IMarker.SEVERITY_ERROR, 0, exception.getMessage());
}
 

/**
 * {@inheritDoc}
 */
@Override
public Response toResponse(JsonProcessingException exception) {
    Throwable throwable = exception;
    while (throwable != null) {
        if (throwable instanceof PersistenceException) {
            return exceptionMappers.get().findMapping(throwable).toResponse(throwable);
        }
        throwable = throwable.getCause();
    }

    logger.debug("Json Processing error", exception);
    String message = exception.getOriginalMessage();
    String desc = null;
    String source = null;
    if (mode.isDev()) {
        desc = IOUtils.getStackTrace(exception);
        JsonLocation location = exception.getLocation();
        if (location != null) {
            source = "line: " + location.getLineNr() +
                    ", column: " + location.getColumnNr();
        } else {
            source = exception.getStackTrace()[0].toString();
        }
    }

    ErrorMessage errorMessage = ErrorMessage.fromStatus(Response.Status.BAD_REQUEST.getStatusCode());
    errorMessage.setThrowable(exception);
    errorMessage.setCode(Hashing.murmur3_32().hashUnencodedChars(exception.getClass().getName()).toString());

    errorMessage.addError(new Result.Error(
            errorMessage.getCode(),
            message != null ? message : exception.getMessage(),
            desc,
            source
    ));

    return Response.status(errorMessage.getStatus())
            .entity(errorMessage)
            .type(ExceptionMapperUtils.getResponseType())
            .build();
}