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

/**
   * 将对象转换成json字符串。
   * <p>Title: pojoToJson</p>
   * <p>Description: </p>
   * @param data
   * @return
   */
  public static String objectToJson(Object data) {
  	try {
	String string = MAPPER.writeValueAsString(data);
	return string;
} catch (JsonProcessingException e) {
	e.printStackTrace();
}
  	return null;
  }
 

@Test
public void testCreate() {
  Map<String, String> props = new HashMap<>();

  Map<DimensionMap, String> auxiliaryRecipients = new TreeMap<>();
  DimensionMap dimensionMap1 = new DimensionMap();
  dimensionMap1.put(GROUP_BY_DIMENSION_NAME, "V1");
  auxiliaryRecipients.put(dimensionMap1, EMAIL1);
  DimensionMap dimensionMap2 = new DimensionMap();
  dimensionMap2.put(GROUP_BY_DIMENSION_NAME, "V2");
  auxiliaryRecipients.put(dimensionMap2, EMAIL2);
  DimensionMap dimensionMap3 = new DimensionMap();
  dimensionMap3.put(GROUP_BY_DIMENSION_NAME, "V1");
  dimensionMap3.put("K2", "V3");
  auxiliaryRecipients.put(dimensionMap3, EMAIL_NOT_USED);

  try {
    ObjectMapper OBJECT_MAPPER = new ObjectMapper();
    String writeValueAsString = OBJECT_MAPPER.writeValueAsString(auxiliaryRecipients);
    props.put(DimensionalAlertGroupAuxiliaryRecipientProvider.AUXILIARY_RECIPIENTS_MAP_KEY, writeValueAsString);

    recipientProvider = new DimensionalAlertGroupAuxiliaryRecipientProvider();
    recipientProvider.setParameters(props);
    NavigableMap<DimensionMap, String> auxiliaryRecipientsRecovered = recipientProvider.getAuxiliaryEmailRecipients();

    // Test the map of auxiliary recipients
    Assert.assertEquals(auxiliaryRecipientsRecovered.get(dimensionMap1), EMAIL1);
    Assert.assertEquals(auxiliaryRecipientsRecovered.get(dimensionMap2), EMAIL2);
    Assert.assertEquals(auxiliaryRecipientsRecovered.get(dimensionMap3), EMAIL_NOT_USED);
  } catch (JsonProcessingException e) {
    e.printStackTrace();
    Assert.fail();
  }
}
 

/**
   * 
   * @Description:将对象转换成json字符串
   * @param data
   * @return
   * @author:Yeauty
   * @time:2017年8月18日 下午5:50:03
   */
  public static String objectToJson(Object data) {
  	try {
	String string = MAPPER.writeValueAsString(data);
	return string;
} catch (JsonProcessingException e) {
	e.printStackTrace();
}
  	return null;
  }
 

@Override
protected void onSpanFinished(MockSpan mockSpan) {
    try {
        String json = objectMapper.writeValueAsString(mockSpan);
        System.out.println(json);
    } catch (JsonProcessingException e) {
        e.printStackTrace();
    }
}
 

@Override
public void setNonNullParameter(PreparedStatement ps, int i, JsonNode parameter, JdbcType jdbcType) throws SQLException {
    String str = null;
    try {
        str = mapper.writeValueAsString(parameter);
    } catch (JsonProcessingException e) {
        e.printStackTrace();
        str = "{}";
    }
    ps.setString(i, str);
}
 

@Override
public ItemSource create(Object event, ObjectWriter objectWriter) {
    try {
        return new LayoutTestItemSource(objectWriter.writeValueAsString(event));
    } catch (JsonProcessingException e) {
        e.printStackTrace();
    }
    return null;
}
 

private static void printJSON(Object object) {
    String result;
    try {
        result = om.writerWithDefaultPrettyPrinter().writeValueAsString(object);
        System.out.println(result);
    } catch (JsonProcessingException e) {
        e.printStackTrace();
    }
}
 

public boolean updateRating(Rating persisted) {
    try {
        valueOps.set("rating-" + persisted.getId(), jsonMapper.writeValueAsString(persisted));
        return true;
    } catch (JsonProcessingException e) {
        e.printStackTrace();
    }
    return false;
}
 

public static void printJson(Object value) {
    try {
        System.out.println(new ObjectMapper().writeValueAsString(value));
    } catch (JsonProcessingException e) {
        e.printStackTrace();
    }
}
 

/**
   * 将对象转换成json字符串。
   */
  public static String objectToJson(Object data) {
  	try {
	String string = MAPPER.writeValueAsString(data);
	return string;
} catch (JsonProcessingException e) {
	e.printStackTrace();
}
  	return null;
  }
 

@Override
public void callBack(Response response) {
    try {
        LoggerUtil.commonLog.info("收到区块高度更新消息:{}", JSONUtils.obj2json(response));
    } catch (JsonProcessingException e) {
        e.printStackTrace();
    }
    HashMap result = ((HashMap) response.getResponseData());
    blockService.newBlockHeight(result);
}
 

public static String toJson(Object data) {
    ObjectMapper objectMapper = new ObjectMapper();
    try {
        return objectMapper.writeValueAsString(data);
    } catch (JsonProcessingException e) {
        e.printStackTrace();
    }
    return null;
}
 

public static String object2json(Object obj){ 
	try {
		return JSON_MAPPER.writeValueAsString(obj);
	} catch (JsonProcessingException e) {
		e.printStackTrace();
	}
	return null;
}
 

public static String bean2Json(Object obj) {
    try {
        return mapper.writeValueAsString(obj);
    } catch (JsonProcessingException e) {
        e.printStackTrace();
        return null;
    }
}
 

/**
 * formatQuoteListToJSON - convert quote list to JSON
 * 
 * @param quote list
 * @return JSON formatted quote list
 */
private String formatQuoteListToJSON(List<StreamingQuote> quoteList) {
	String jsonData = null;
	ObjectMapper mapper = new ObjectMapper();

	try {
		jsonData = mapper.writeValueAsString(quoteList);
	} catch (JsonProcessingException e) {
		System.out.println(
				"TimeRangeStreamingQuoteActionHandler.formatQuoteListToJSON(): ERROR: JsonProcessingException on quote list !!!");
		e.printStackTrace();
	}

	return jsonData;
}
 

@GET
@UnitOfWork(transactional = false, readOnly = true, flushMode = FlushMode.MANUAL)
public Response get(@RobeAuth Credentials credentials) {
    Response.ResponseBuilder builder = Response.ok();
    builder.status(Response.Status.ACCEPTED);
    try {
        builder.entity(OBJECT_MAPPER.writeValueAsString(environment.metrics()));
    } catch (JsonProcessingException e) {
        builder.status(Response.Status.INTERNAL_SERVER_ERROR);
        e.printStackTrace();
    }
    return builder.build();
}
 

/**
 * Method to set the data for all chart types except {@link com.github.appreciated.apexcharts.config.chart.Type#pie} and {@link com.github.appreciated.apexcharts.config.chart.Type#donut}.
 * For these both types use setSeries{@link #setSeries(Double[])}
 * @param series the data series to assign to the Chart
 */
public void setSeries(Series... series) {
    try {
        getModel().setSeries(objectMapper.writeValueAsString(series));
    } catch (JsonProcessingException e) {
        e.printStackTrace();
    }
}
 

public static String toJson(Object obj) {
    try {
        return JSON.writeValueAsString(obj);
    } catch (JsonProcessingException e) {
        e.printStackTrace();
    }

    return null;
}
 

public static String toJSON(ApiCallRc apiCallRc)
{
    ObjectMapper objectMapper = new ObjectMapper();
    ArrayList<ApiCallData> jsonData = new ArrayList<>();

    for (ApiCallRc.RcEntry rc : apiCallRc.getEntries())
    {
        jsonData.add(new ApiCallData(
            rc.getReturnCode(),
            rc.getMessage(),
            rc.getCause(),
            rc.getCorrection(),
            rc.getDetails(),
            rc.getObjRefs(),
            rc.getErrorIds()
        ));
    }

    String ret = null;
    try
    {
        ret = objectMapper.writeValueAsString(jsonData);
    }
    catch (JsonProcessingException exc)
    {
        exc.printStackTrace();
    }

    return ret;
}
 

public static String bean2Json(Object obj) {
    try {
        return mapper.writeValueAsString(obj);
    } catch (JsonProcessingException e) {
        e.printStackTrace();
        return "";
    }
}