com.alibaba.fastjson.serializer.SerializeWriter#writeString ( )源码实例Demo

/**
 * 写值
 *
 * @param out        输出
 * @param field      字段
 * @param value      值
 * @param ignoreNull 是否忽略null值
 * @param separator  分隔符位置
 */
protected void writeString(final SerializeWriter out, final String field, final String value,
                           final boolean ignoreNull, final int separator) {
    if (value != null || !ignoreNull) {
        if (separator == BEFORE) {
            out.write(',');
        }
        out.writeFieldName(field);
        if (value == null) {
            out.writeNull();
        } else {
            out.writeString(value);
        }
        if (separator == AFTER) {
            out.write(',');
        }
    }
}
 

public void write(JSONSerializer serializer, Object object, Object fieldName, Type fieldType, int features) throws IOException {
    SerializeWriter out = serializer.getWriter();

    if (object == null) {
        out.writeNull();
        return;
    }

    Class cls = object.getClass();
    if (cls == DateTime.class) {
        out.writeString(dateTimeCodec().toString((DateTime) object));
        return;
    } else if (cls == LocalDateTime.class) {
        out.writeString(localDateTimeCodec().toString((LocalDateTime) object));
        return;
    } else if (cls == LocalDate.class) {
        out.writeString(localDateCodec().toString((LocalDate) object));
        return;
    } else if (cls == LocalTime.class) {
        out.writeString(localTimeCodec().toString((LocalTime) object));
        return;
    }

    out.writeString(object.toString());
}
 

@Override
public void write(
        JSONSerializer serializer,
        Object object,
        Object fieldName,
        Type fieldType,
        int features
) {
    SerializeWriter out = serializer.getWriter();
    if (object == null) {
        out.writeNull();
    } else {
        Class cls = object.getClass();
        if (cls == DateTime.class) {
            out.writeString(object.toString());
        } else {
            out.writeString(object.toString());
        }
    }
}
 

public void write(JSONSerializer serializer, Object object, Object fieldName, Type fieldType) throws IOException {
    AVObject avObject = (AVObject)object;
    SerializeWriter writer = serializer.getWriter();
    writer.write('{');

    // for 1.1.70.android fastjson, we dont use writer.writeFieldValue(seperator, field, value) method.
    writer.write(' ');

//    writer.writeFieldName("@type", false);
//    writer.writeString(avObject.getClass().getName());
//    writer.write(',');

    writer.writeFieldName(KEY_VERSION, false);
    writer.writeString(DEFAULT_VERSION);
    writer.write(',');
    writer.writeFieldName(AVObject.KEY_CLASSNAME, false);
    writer.writeString(avObject.getClassName());
    writer.write(',');
    writer.writeFieldName(KEY_SERVERDATA, false);
    if (AVOSCloud.isEnableCircularReferenceDetect()) {
      writer.write(JSON.toJSONString(avObject.serverData, ObjectValueFilter.instance, SerializerFeature.WriteClassName));
    } else {
      writer.write(JSON.toJSONString(avObject.serverData, ObjectValueFilter.instance, SerializerFeature.WriteClassName,
              SerializerFeature.DisableCircularReferenceDetect));
    }

    writer.write('}');
  }
 

public void write(JSONSerializer serializer, Object object, Object fieldName, Type fieldType, int features) throws IOException {
    SerializeWriter out = serializer.getWriter();

    if (object == null) {
        out.writeNull();
        return;
    }

    out.writeString(keywordCodec.toString((Keyword) object));
}
 

@Override
public void write(JSONSerializer serializer, Object object, Object fieldName, Type fieldType, int features)
		throws IOException {
	SerializeWriter out = serializer.getWriter();
	if (object == null) {
		out.writeNull();
		return;
	}

	Node<?> node = (Node<?>) object;

	out.write('{');

	out.writeFieldName("children");
	serializer.write(node.getChildren());
	out.write(",");

	out.writeFieldName("leaf");
	out.write(node.getLeaf());
	out.write(",");

	if (!Strings.isNullOrEmpty(node.getIcon())) {
		out.writeFieldName("icon");
		out.writeString(node.getIcon());
		out.write(",");
	}

	if (node.getChecked() != null) {
		out.writeFieldName("checked");
		out.write(node.getChecked());
		out.write(",");
	}

	if (node.getExpanded() != null) {
		out.writeFieldName("expanded");
		out.write(node.getExpanded());
		out.write(",");
	}

	List<? extends SerializeFilter> serializeFilters = serializer.getPropertyPreFilters();

	Object data = node.getData();

	// 处理父节点
	if (data != null && data instanceof Treeable && serializeFilters != null && serializeFilters.size() > 0) {
		boolean parentProcess = false;
		for (SerializeFilter filter : serializeFilters) {
			if (filter instanceof IncludesPropertyPreFilter) {
				Set<String> includes = ((IncludesPropertyPreFilter) filter).getIncludes();
				parentProcess = includes.contains("parent");
				if (parentProcess) {
					break;
				}
			}
		}
		if (parentProcess) {
			Object parent = ((Treeable<?>) data).getParent();
			if (parent != null) {
				out.writeFieldName("parent");
				out.write(JSON.toJSONString(parent, serializeConfig,
						Iterables.toArray(serializeFilters, SerializeFilter.class)));
				out.write(",");
			}
		}
	}

	// 处理对象值
	String dataString = serializeFilters == null ? JSON.toJSONString(data, serializeConfig)
			: JSON.toJSONString(data, serializeConfig, Iterables.toArray(serializeFilters, SerializeFilter.class));
	dataString = StringUtils.substring(dataString, 1);
	out.write(dataString);
}
 

@Override
public void write(JSONSerializer serializer, Object object, Object fieldName, Type fieldType, int features)
		throws IOException {

	SerializeWriter out = serializer.getWriter();
	if (object == null) {
		out.writeNull();
		return;
	}

	Result result = (Result) object;

	out.write('{');

	Map<String, Object> extraProperties = result.getExtraProperties();
	for (Entry<String, Object> entry : extraProperties.entrySet()) {
		String key = entry.getKey();
		Object value = entry.getValue();

		out.writeFieldName(key);
		serializer.write(value);
		out.write(',');
	}

	out.writeFieldName(FIELD_SUCCESS);
	out.write(Objects.equal(result.getCode(), Code.success));
	out.write(',');

	out.writeFieldName(FIELD_CODE);
	out.writeString(result.getCode().name());
	out.write(',');

	out.writeFieldName(FIELD_MESSAGE);
	out.writeString(result.getMessage());
	out.write(',');

	out.writeFieldName(FIELD_DATA);
	serializer.write(result.getData());

	out.write('}');
}