我正在尝试使用Java中的StAx解析器解析xml的5mb。使用intellij的想法， 在研究中，他们要求我在自定义vm选项中增加堆大小，我将512m增加到2048m，但是它不起作用。让我知道还有其他解决方案...
以下代码正尝试使用StAx解析器进行解析 // StAX xml解析为HotelSearchResult
public HotelSearchDto processRequestXmlparsing(String xml) throws ParserConfigurationException, IOException, SAXException, XMLStreamException {
HotelSearchDto hotelSearchDto = new HotelSearchDto();
ObjectMapper mapper = new ObjectMapper();
ObjectNode objectNode = mapper.createObjectNode();
String code = "";
String message = null;
try{
long startTime = System.currentTimeMillis();
List<SubsectionInformation> subInformationList = new ArrayList<>();
byte[] byteArray = xml.getBytes("UTF-8");
ByteArrayInputStream inputStream = new ByteArrayInputStream(byteArray);
XMLInputFactory inputFactory = XMLInputFactory.newInstance();
XMLEventReader eventReader = inputFactory.createXMLEventReader(inputStream);
SearchCriteriaDto searchCriteriaDto = new SearchCriteriaDto();
Hotel hotel = new Hotel();
BaseInfo baseInfo = new BaseInfo();
CommunicationInfo communicationInfo = new CommunicationInfo();
HotelRating hotelRating = new HotelRating();
HotelAmenity hotelAmenity = new HotelAmenity();
DetailedAmenity detailedAmenity = new DetailedAmenity();
List<DetailedAmenity> detailedAmenities = new ArrayList<DetailedAmenity>();
Amenitie amenitie = new Amenitie();
List<HotelAmenity> hotelAmenityList= new ArrayList<HotelAmenity>();
List<Amenitie> amenitieList = new ArrayList<Amenitie>();
List<Hotel> hotelList = new ArrayList<Hotel>();
List<RoomRate> roomRates = new ArrayList<RoomRate>();
RoomRate roomRate = new RoomRate();
Offers offers = new Offers();
List<RateBrakeDown> rateBrakeDownList = new ArrayList<RateBrakeDown>();
RateBrakeDown rateBrakeDown = new RateBrakeDown();
List<PricingElement> pricingElementList = new ArrayList<PricingElement>();
PricingElement pricingElement = new PricingElement();
RoomType roomType = new RoomType();
PromoOffer promoOffer = new PromoOffer();
while (eventReader.hasNext()) {
XMLEvent event = eventReader.nextEvent();
// If we have an item element, we create a new item
if (event.isStartElement()) {
if (event.asStartElement().getName().getLocalPart()
.equals("booking-date")) {
searchCriteriaDto.setBookingDate(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equals("check-in-date")) {
searchCriteriaDto.setCheckInDate(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equals("check-out-date")) {
searchCriteriaDto.setCheckOutDate(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equals("number-of-rooms")) {
searchCriteriaDto.setNumberOfRooms(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equals("number-of-nights")) {
searchCriteriaDto.setNumberOfNights(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equals("number-of-room-nights")) {
searchCriteriaDto.setNumberOfRoomNights(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equals("city")) {
searchCriteriaDto.setCity(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equals("state")) {
searchCriteriaDto.setState(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equals("country")) {
searchCriteriaDto.setCountry(eventReader.nextEvent().toString());
hotelSearchDto.setSearchCriteriaDto(searchCriteriaDto);
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equals("currency")) {
hotelSearchDto.setCurrency(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equals("base-url")) {
hotelSearchDto.setBaseUrl(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equals("hotel-id")) {
hotel.setHotelId(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equals("hotel-info-copyright")) {
baseInfo.setHotelInfoCopyright(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equals("hotel-name")) {
baseInfo.setHotelName(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equals("address")) {
baseInfo.setAddress(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equals("locality")) {
baseInfo.setLocality(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("locality-id")) {
baseInfo.setLocalityId(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("locality-latitude")) {
baseInfo.setLocalityLatitude(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("locality-longitude")) {
baseInfo.setLocalityLongitude(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("city")) {
baseInfo.setCity(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("state")) {
baseInfo.setState(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("state-code")) {
baseInfo.setStateCode(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("country")) {
baseInfo.setCountry(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("country-code")) {
baseInfo.setCountryCode(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("zip")) {
baseInfo.setZip(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("phone")) {
communicationInfo.setPhone(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("fax")) {
communicationInfo.setFax(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("email")) {
communicationInfo.setEmail(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("website")) {
communicationInfo.setWebsite(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("owner-name")) {
communicationInfo.setOwnerName(eventReader.nextEvent().toString());
baseInfo.setCommunicationInfo(communicationInfo);
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("chain")) {
baseInfo.setChain(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("overview")) {
baseInfo.setOverview(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("thumb-nail-image")) {
baseInfo.setThumbNailImage(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equals("category")) {
hotelAmenity.setCategory(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("amenity")) {
String amenityVal = eventReader.nextEvent().toString();
String[] amentityArray = new String[]{amenityVal};
// amenitie.setAmenity(amentityArray);
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("name")) {
detailedAmenity.setName(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("chargeable")) {
detailedAmenity.setChargeable(Boolean.parseBoolean(eventReader.nextEvent().toString()));
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("price-info")) {
detailedAmenity.setPriceInfo(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("unit-info")) {
detailedAmenity.setUnitInfo(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("misc-info")) {
detailedAmenity.setMiscInfo(eventReader.nextEvent().toString());
detailedAmenities.add(detailedAmenity);
amenitie.setDetailedAmenityList(detailedAmenities);
hotelAmenity.setAmenities(amenitie);
hotelAmenityList.add(hotelAmenity);
baseInfo.setHotelAmenityList(hotelAmenityList);
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("is-veg")) {
baseInfo.setIsVeg(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("is-on-hold")) {
baseInfo.setIsOnHold(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equals("rating-type")) {
hotelRating.setRatingType(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equals("rating")) {
hotelRating.setRating(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equals("total-ratings")) {
hotelRating.setTotalRating(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("star-rating")) {
baseInfo.setStarRating(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("ct-recommendation")) {
baseInfo.setCtRecommendation(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("hotel-usp")) {
baseInfo.setHotelUsp(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("notice")) {
baseInfo.setNotice(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("ct-recommended")) {
baseInfo.setCtRecommended(Boolean.parseBoolean(eventReader.nextEvent().toString()));
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("getaway-property")) {
baseInfo.setGetawayProperty(Boolean.parseBoolean(eventReader.nextEvent().toString()));
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("lth-hotel")) {
baseInfo.setLthHotel(Boolean.parseBoolean(eventReader.nextEvent().toString()));
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("faqs")) {
baseInfo.setFaqs(Boolean.parseBoolean(eventReader.nextEvent().toString()));
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("restrictions")) {
baseInfo.setRestrictions(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("hotel-activities")) {
baseInfo.setRestrictions(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("view-360")) {
baseInfo.setView360(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("supplier-360")) {
baseInfo.setSupplier360(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("gstin_enabled")) {
baseInfo.setGstin_enabled(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("gstin")) {
baseInfo.setGstin(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("tds_enabled")) {
baseInfo.setTds_enabled(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("tds_rate")) {
baseInfo.setTds_rate(eventReader.nextEvent().toString());
hotel.setBaseInfo(baseInfo);
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("amount")) {
pricingElement.setAmount(eventReader.nextEvent().toString());
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("code")) {
pricingElement.setCode(eventReader.nextEvent().toString());
pricingElementList.add(pricingElement);
rateBrakeDown.setPricingElement(pricingElementList);
rateBrakeDownList.add(rateBrakeDown);
roomRate.setRateBrakeDown(rateBrakeDownList);
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("base-rate-id")) {
roomRate.setBaseRateId(Long.parseLong(eventReader.nextEvent().toString()));
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("is-special-rate")) {
roomRate.setSpecialRate(Boolean.parseBoolean(eventReader.nextEvent().toString()));
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("deal-of-the-day")) {
roomRate.setDealOfTheDay(Boolean.parseBoolean(eventReader.nextEvent().toString()));
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("opaque")) {
roomRate.setOpaque(Boolean.parseBoolean(eventReader.nextEvent().toString()));
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("max-adults")) {
roomRate.setMaxAdults(Long.parseLong(eventReader.nextEvent().toString()));
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("max-children")) {
roomRate.setMaxChildren(Long.parseLong(eventReader.nextEvent().toString()));
continue;
}
if (event.asStartElement().getName().getLocalPart()
.equalsIgnoreCase("max-gst-slab")) {
roomRate.setMaxGstSlab(eventReader.nextEvent().toString());
roomRates.add(roomRate);
hotel.setRoomRates(roomRates);
hotelList.add(hotel);
hotelSearchDto.setHotelList(hotelList);
System.out.println(hotelSearchDto.getHotelList().size());
continue;
}
}
}
//Creating json object for xmlparsing elements
if(code.equalsIgnoreCase("")) {
Gson gson = new Gson();
objectNode.put("HotelSearchDto", gson.toJson(hotelSearchDto));
}else{
objectNode.put("code", code);
objectNode.put("message", message);
}
Long endtime = System.currentTimeMillis() - startTime;
System.out.println(endtime);
}catch(Exception e){
e.printStackTrace();
}
return hotelSearchDto;
}
答案 0 :(得分：0)
IntelliJ，位置是File |。设置|构建，执行，部署|编译器构建进程堆大小。