java - java解析JSON字符串，最佳实践

Question

我有 JSON 字符串/响应，我需要简单解析它并获取对象/数组，它可以重复，所以我需要逐个列表获取列表，实际上我不知道该怎么做，因为很多解析器和所有示例都带有简单的 JSON-es，但我的有点困难，我需要在其中导航。这是我的 JSON 的示例

{
    "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"
                            }
                        }
                    }
                }
            }
        }
    }
}

Answer 1

我知道有 2 个用于在 Java 中解析 JSON 的库:GSON 和 Jackson。我对 jackson 有一点了解，它有以下三种作用:

1. 您可以要求 Jackson 将您的 JSON 解析为对象
2. 您可以读取 JSON 并将其加载到内存中，以便您可以在其中导航。
3. 您可以像读取流一样读取 JSON

以下是有关这些方法的链接:http://wiki.fasterxml.com/JacksonInFiveMinutes