解析JSON字符串java,最佳实践
我有JSON字符串/响应,我需要简单地解析它并获取对象/数组,它可以重复,所以我需要一个列表一个列表地获取,实际上我不知道怎么做,因为很多解析器和所有示例都使用简单的JSON es,但我的有点困难,我需要在其中导航。 下面是我的JSON示例解析JSON字符串java,最佳实践,java,json,parsing,getjson,Java,Json,Parsing,Getjson,我有JSON字符串/响应,我需要简单地解析它并获取对象/数组,它可以重复,所以我需要一个列表一个列表地获取,实际上我不知道怎么做,因为很多解析器和所有示例都使用简单的JSON es,但我的有点困难,我需要在其中导航。 下面是我的JSON示例 { "HotelListResponse": { "customerSessionId": "0ABAAA83-04C7-5B91-40A2-754D7299476C", "numberOfRoomsRequested
{
"HotelListResponse": {
"customerSessionId": "0ABAAA83-04C7-5B91-40A2-754D7299476C",
"numberOfRoomsRequested": 1,
"moreResultsAvailable": true,
"cacheKey": "-4804c75b:140a754d729:4da2",
"cacheLocation": "10.186.170.131:7300",
"HotelList": {
"@activePropertyCount": "1157",
"@size": "1",
"HotelSummary": {
"@order": "0",
"hotelId": 403147,
"name": "Justabed - Hostel",
"address1": "38 avenue augustin dumont",
"city": "Malakoff",
"postalCode": 92240,
"countryCode": "FR",
"airportCode": " ",
"supplierType": "E",
"propertyCategory": 5,
"hotelRating": 0,
"confidenceRating": 52,
"amenityMask": 8,
"tripAdvisorRating": 1.5,
"locationDescription": "Near Paris Expo Porte de Versailles",
"shortDescription": "<p><b>Property Location</b> <br />With a stay at Justabed in Vanves, you'll be close to Stade de la Plaine and Eiffel Tower.<br/> This hostel is within close proximity of Georges Brassens Park and",
"highRate": 24.87,
"lowRate": 24.87,
"rateCurrencyCode": "EUR",
"latitude": 48.81804,
"longitude": 2.30196,
"proximityDistance": 2.5680416,
"proximityUnit": "MI",
"hotelInDestination": true,
"thumbNailUrl": "/hotels/5000000/4850000/4849100/4849100/4849100_7_t.jpg",
"deepLink": "http://travel.ian.com/index.jsp?pageName=hotAvail&cid=55505&hotelID=403147&mode=2&numberOfRooms=1&room-0-adult-total=1&room-0-child-total=0&arrivalMonth=8&arrivalDay=18&departureMonth=8&departureDay=21&showInfo=true&locale=en_US&currencyCode=EUR",
"RoomRateDetailsList": {
"RoomRateDetails": {
"roomTypeCode": 200166353,
"rateCode": 201887482,
"maxRoomOccupancy": 1,
"quotedRoomOccupancy": 1,
"minGuestAge": 3,
"roomDescription": "Single Beds in Mixed Dormitory Room - Non refundable",
"currentAllotment": 8,
"propertyAvailable": true,
"propertyRestricted": false,
"expediaPropertyId": 4849100,
"rateKey": "0ABAAA83-04C7-5B91-40A2-754D72994DA3",
"RateInfo": {
"@rateChange": "false",
"@promo": "false",
"@priceBreakdown": "true",
"ChargeableRateInfo": {
"@total": "79.83",
"@surchargeTotal": "5.22",
"@nightlyRateTotal": "74.61",
"@maxNightlyRate": "24.87",
"@currencyCode": "EUR",
"@commissionableUsdTotal": "99.65",
"@averageRate": "24.87",
"@averageBaseRate": "24.87",
"NightlyRatesPerRoom": {
"@size": "3",
"NightlyRate": [
{
"@promo": "false",
"@rate": "24.87",
"@baseRate": "24.87"
},
{
"@promo": "false",
"@rate": "24.87",
"@baseRate": "24.87"
},
{
"@promo": "false",
"@rate": "24.87",
"@baseRate": "24.87"
}
]
},
"Surcharges": {
"@size": "1",
"Surcharge": {
"@amount": "5.22",
"@type": "TaxAndServiceFee"
}
}
}
},
"ValueAdds": {
"@size": "1",
"ValueAdd": {
"@id": "2048",
"description": "Free Wireless Internet"
}
}
}
}
}
}
}
}
我会使用一个库来实现这一点,比如(其他库也在那里;这只是我通过网络搜索找到的第一个库。)
当然,除非这是一个学校项目或其他什么,您需要编写自己的解析器。在这种情况下,也许你应该提出一个更具体的问题,并问这个问题,而不是问如何做每件事。我会用一个库来做这件事,比如(其他的都在那里;这只是我通过网络搜索找到的第一个。)
当然,除非这是一个学校项目或其他什么,您需要编写自己的解析器。在这种情况下,也许你应该提出一个更具体的问题并问这个问题,而不是问如何做所有事情。我知道有两个库可以在Java中解析JSON:GSON和Jackson。我对杰克逊略知一二,它有三种作用:
下面是关于这些方法的链接:我知道有两个库可以在Java中解析JSON:GSON和Jackson。我对杰克逊略知一二,它有三种作用:
以下是关于这些方法的链接:我总结并使用了jackson 这里有一个答案,也许对其他人有用
public void parseLink(String jsonObject) {
try {
ObjectMapper mapper = new ObjectMapper();
JsonFactory factory = mapper.getJsonFactory(); // since 2.1 use mapper.getFactory() instead
JsonParser jp = factory.createJsonParser(jsonObject);
JsonNode input = mapper.readTree(jp);
// final JsonNode results = input.get("HotelListResponse").get("HotelList").get("HotelSummary");
Iterator<Entry<String, JsonNode>> nodeIterator = input.get("HotelListResponse").getFields();
while (nodeIterator.hasNext()) {
Map.Entry<String, JsonNode> entry = (Map.Entry<String, JsonNode>) nodeIterator.next();
System.out.println("key --> " + entry.getKey() + " value-->" + entry.getValue());
}
Iterator<Entry<String, JsonNode>> nodeIterator1 = input.get("HotelListResponse").get("HotelList").getFields();
while (nodeIterator1.hasNext()) {
Map.Entry<String, JsonNode> entry = (Map.Entry<String, JsonNode>) nodeIterator1.next();
System.out.println("key --> " + entry.getKey() + " value-->" + entry.getValue());
}
Iterator<Entry<String, JsonNode>> nodeIterator2 = input.get("HotelListResponse").get("HotelList").get("HotelSummary").getFields();
while (nodeIterator2.hasNext()) {
Map.Entry<String, JsonNode> entry = (Map.Entry<String, JsonNode>) nodeIterator2.next();
System.out.println("key --> " + entry.getKey() + " value-->" + entry.getValue());
}
} catch (IOException ex) {
Logger.getLogger(HotelBean.class.getName()).log(Level.SEVERE, null, ex);
} catch (Exception e) {
e.printStackTrace();
}
}
public void parseLink(字符串jsonObject){
试一试{
ObjectMapper mapper=新的ObjectMapper();
JsonFactory=mapper.getJsonFactory();//因为2.1使用了mapper.getFactory()
JsonParser jp=factory.createJsonParser(jsonObject);
JsonNode输入=mapper.readTree(jp);
//最终的JsonNode结果=input.get(“HotelListResponse”).get(“HotelList”).get(“HotelSummary”);
迭代器nodeIterator=input.get(“HotelListResponse”).getFields();
while(nodeIterator.hasNext()){
Map.Entry=(Map.Entry)nodeIterator.next();
System.out.println(“key-->”+entry.getKey()+“value-->”+entry.getValue());
}
迭代器nodeIterator1=input.get(“HotelListResponse”).get(“HotelList”).getFields();
while(nodeIterator1.hasNext()){
Map.Entry=(Map.Entry)nodeIterator1.next();
System.out.println(“key-->”+entry.getKey()+“value-->”+entry.getValue());
}
迭代器nodeIterator2=input.get(“hotellistreponse”).get(“HotelList”).get(“HotelSummary”).getFields();
while(nodeIterator2.hasNext()){
Map.Entry=(Map.Entry)nodeIterator2.next();
System.out.println(“key-->”+entry.getKey()+“value-->”+entry.getValue());
}
}捕获(IOEX异常){
Logger.getLogger(HotelBean.class.getName()).log(Level.SEVERE,null,ex);
}捕获(例外e){
e、 printStackTrace();
}
}
我总结并使用了jackson
这里有一个答案,也许对其他人有用
public void parseLink(String jsonObject) {
try {
ObjectMapper mapper = new ObjectMapper();
JsonFactory factory = mapper.getJsonFactory(); // since 2.1 use mapper.getFactory() instead
JsonParser jp = factory.createJsonParser(jsonObject);
JsonNode input = mapper.readTree(jp);
// final JsonNode results = input.get("HotelListResponse").get("HotelList").get("HotelSummary");
Iterator<Entry<String, JsonNode>> nodeIterator = input.get("HotelListResponse").getFields();
while (nodeIterator.hasNext()) {
Map.Entry<String, JsonNode> entry = (Map.Entry<String, JsonNode>) nodeIterator.next();
System.out.println("key --> " + entry.getKey() + " value-->" + entry.getValue());
}
Iterator<Entry<String, JsonNode>> nodeIterator1 = input.get("HotelListResponse").get("HotelList").getFields();
while (nodeIterator1.hasNext()) {
Map.Entry<String, JsonNode> entry = (Map.Entry<String, JsonNode>) nodeIterator1.next();
System.out.println("key --> " + entry.getKey() + " value-->" + entry.getValue());
}
Iterator<Entry<String, JsonNode>> nodeIterator2 = input.get("HotelListResponse").get("HotelList").get("HotelSummary").getFields();
while (nodeIterator2.hasNext()) {
Map.Entry<String, JsonNode> entry = (Map.Entry<String, JsonNode>) nodeIterator2.next();
System.out.println("key --> " + entry.getKey() + " value-->" + entry.getValue());
}
} catch (IOException ex) {
Logger.getLogger(HotelBean.class.getName()).log(Level.SEVERE, null, ex);
} catch (Exception e) {
e.printStackTrace();
}
}
public void parseLink(字符串jsonObject){
试一试{
ObjectMapper mapper=新的ObjectMapper();
JsonFactory=mapper.getJsonFactory();//因为2.1使用了mapper.getFactory()
JsonParser jp=factory.createJsonParser(jsonObject);
JsonNode输入=mapper.readTree(jp);
//最终的JsonNode结果=input.get(“HotelListResponse”).get(“HotelList”).get(“HotelSummary”);
迭代器nodeIterator=input.get(“HotelListResponse”).getFields();
while(nodeIterator.hasNext()){
Map.Entry=(Map.Entry)nodeIterator.next();
System.out.println(“key-->”+entry.getKey()+“value-->”+entry.getValue());
}
迭代器nodeIterator1=input.get(“HotelListResponse”).get(“HotelList”).getFields();
while(nodeIterator1.hasNext()){
Map.Entry=(Map.Entry)nodeIterator1.next();
System.out.println(“key-->”+entry.getKey()+“value-->”+entry.getValue());
}
迭代器nodeIterator2=input.get(“hotellistreponse”).get(“HotelList”).get(“HotelSummary”).getFields();
while(nodeIterator2.hasNext()){
Map.Entry=(Map.Entry)nodeIterator2.next();
System.out.println(“key-->”+entry.getKey()+“value-->”+entry.getValue());
}
}捕获(IOEX异常){
Logger.getLogger(HotelBean.class.getName()).log(Level.SEVERE,null,ex);
}捕获(例外e){
e、 printStackTrace();
}
}
这里有一个类似的问题:这里有一个类似的问题: