gson JAVA如何将JSONObject转换成自定义格式？

2nbm6dog  于 2022-11-06  发布在  Java
关注(0)|答案(1)|浏览(166)

我正在尝试做的是将某个JSON文件更改为自定义格式，我已经搜索了两天的信息，但我还没有弄清楚，我没有人问这个....

格式化前

  1. {
  2.    "book": [
  4.       {
  5.          "id": "01",
  6.          "language": "Java",
  7.          "edition": "third",
  8.          "author": "Herbert Schildt"
  9.       },
  11.       {
  12.          "id": "07",
  13.          "language": "C++",
  14.          "edition": "second",
  15.          "author": "E.Balagurusamy"
  16.       }
  18.    ]
  19. }

正在尝试将其格式化为：

  1. Book
  2.       Id : 01
  3.       Language : Java
  4.       ...
  6.       Id : 07
  7.       Language : C++

实际的JSON数据如下所示：

  1. [
  2.     {
  3.         "symbol": "BTC",
  4.         "circulating_supply": 18729837,
  5.         "last_updated": "2021-06-08T10:17:02.000Z",
  6.         "total_supply": 18729837,
  7.         "cmc_rank": 1,
  8.         "platform": null,
  9.         "tags": [
  10.             "mineable",
  11.             "pow",
  12.             "sha-256",
  13.             "store-of-value",
  14.             "state-channels",
  15.             "coinbase-ventures-portfolio",
  16.             "three-arrows-capital-portfolio",
  17.             "polychain-capital-portfolio",
  18.             "binance-labs-portfolio",
  19.             "arrington-xrp-capital",
  20.             "blockchain-capital-portfolio",
  21.             "boostvc-portfolio",
  22.             "cms-holdings-portfolio",
  23.             "dcg-portfolio",
  24.             "dragonfly-capital-portfolio",
  25.             "electric-capital-portfolio",
  26.             "fabric-ventures-portfolio",
  27.             "framework-ventures",
  28.             "galaxy-digital-portfolio",
  29.             "huobi-capital",
  30.             "alameda-research-portfolio",
  31.             "a16z-portfolio",
  32.             "1confirmation-portfolio",
  33.             "winklevoss-capital",
  34.             "usv-portfolio",
  35.             "placeholder-ventures-portfolio",
  36.             "pantera-capital-portfolio",
  37.             "multicoin-capital-portfolio",
  38.             "paradigm-xzy-screener"
  39.         ],
  40.         "date_added": "2013-04-28T00:00:00.000Z",
  41.         "quote": {"USD": {
  42.             "percent_change_30d": -42.63012856,
  43.             "percent_change_1h": 0.38317977,
  44.             "last_updated": "2021-06-08T10:17:02.000Z",
  45.             "percent_change_24h": -9.36685756,
  46.             "market_cap": 619325019564.578,
  47.             "price": 33066.22580669431,
  48.             "percent_change_60d": -43.54639481,
  49.             "volume_24h": 43132365330.36409,
  50.             "percent_change_90d": -39.86303315,
  51.             "percent_change_7d": -9.21607228
  52.         }},
  53.         "num_market_pairs": 9722,
  54.         "name": "Bitcoin",
  55.         "max_supply": 21000000,
  56.         "id": 1,
  57.         "slug": "bitcoin"
  58.     },
  59.     {
  60.         "symbol": "ETH",
  61.         "circulating_supply": 116205430.624,
  62.         "last_updated": "2021-06-08T10:17:02.000Z",
  63.         "total_supply": 116205430.624,
  64.         "cmc_rank": 2,
  65.         "platform": null,
  66.         "tags": [
  67.             "mineable",
  68.             "pow",
  69.             "smart-contracts",
  70.             "ethereum",
  71.             "coinbase-ventures-portfolio",
  72.             "three-arrows-capital-portfolio",
  73.             "polychain-capital-portfolio",
  74.             "binance-labs-portfolio",
  75.             "arrington-xrp-capital",
  76.             "blockchain-capital-portfolio",
  77.             "boostvc-portfolio",
  78.             "cms-holdings-portfolio",
  79.             "dcg-portfolio",
  80.             "dragonfly-capital-portfolio",
  81.             "electric-capital-portfolio",
  82.             "fabric-ventures-portfolio",
  83.             "framework-ventures",
  84.             "hashkey-capital-portfolio",
  85.             "kinetic-capital",
  86.             "huobi-capital",
  87.             "alameda-research-portfolio",
  88.             "a16z-portfolio",
  89.             "1confirmation-portfolio",
  90.             "winklevoss-capital",
  91.             "usv-portfolio",
  92.             "placeholder-ventures-portfolio",
  93.             "pantera-capital-portfolio",
  94.             "multicoin-capital-portfolio",
  95.             "paradigm-xzy-screener"
  96.         ],
  97.         "date_added": "2015-08-07T00:00:00.000Z",
  98.         "quote": {"USD": {
  99.             "percent_change_30d": -34.93326351,
  100.             "percent_change_1h": 0.0977492,
  101.             "last_updated": "2021-06-08T10:17:02.000Z",
  102.             "percent_change_24h": -10.67415695,
  103.             "market_cap": 292465567141.6079,
  104.             "price": 2516.797756964766,
  105.             "percent_change_60d": 20.00514111,
  106.             "volume_24h": 38463882117.94565,
  107.             "percent_change_90d": 37.73403958,
  108.             "percent_change_7d": -3.05561192
  109.         }},
  110.         "num_market_pairs": 6053,
  111.         "name": "Ethereum",
  112.         "max_supply": null,
  113.         "id": 1027,
  114.         "slug": "ethereum"
  115.     },
  116.     {
  117.         "symbol": "USDT",
  118.         "circulating_supply": 62280355385.45168,
  119.         "last_updated": "2021-06-08T10:16:08.000Z",
  120.         "total_supply": 64471767616.826355,
  121.         "cmc_rank": 3,
  122.         "platform": {
  123.             "symbol": "ETH",
  124.             "name": "Ethereum",
  125.             "token_address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
  126.             "id": 1027,
  127.             "slug": "ethereum"
  128.         },
  129.         "tags": [
  130.             "store-of-value",
  131.             "payments",
  132.             "stablecoin",
  133.             "stablecoin-asset-backed",
  134.             "solana-ecosystem"
  135.         ],
  136.         "date_added": "2015-02-25T00:00:00.000Z",
  137.         "quote": {"USD": {
  138.             "percent_change_30d": 0.08689942,
  139.             "percent_change_1h": -0.01514305,
  140.             "last_updated": "2021-06-08T10:16:08.000Z",
  141.             "percent_change_24h": 0.00252658,
  142.             "market_cap": 62333503909.90704,
  143.             "price": 1.00085337542033,
  144.             "percent_change_60d": 0.00890571,
  145.             "volume_24h": 88090197454.22122,
  146.             "percent_change_90d": 0.02421796,
  147.             "percent_change_7d": 0.03190558
  148.         }},
  149.         "num_market_pairs": 13483,
  150.         "name": "Tether",
  151.         "max_supply": null,
  152.         "id": 825,
  153.         "slug": "tether"
  154.     },
  155.     {
  156.         "symbol": "BNB",
  157.         "circulating_supply": 153432897,
  158.         "last_updated": "2021-06-08T10:17:08.000Z",
  159.         "total_supply": 169432897,
  160.         "cmc_rank": 4,
  161.         "platform": null,
  162.         "tags": [
  163.             "marketplace",
  164.             "centralized-exchange",
  165.             "payments",
  166.             "binance-smart-chain",
  167.             "alameda-research-portfolio",
  168.             "multicoin-capital-portfolio"
  169.         ],
  170.         "date_added": "2017-07-25T00:00:00.000Z",
  171.         "quote": {"USD": {
  172.             "percent_change_30d": -46.98637267,
  173.             "percent_change_1h": -0.06201527,
  174.             "last_updated": "2021-06-08T10:17:08.000Z",
  175.             "percent_change_24h": -12.9766759,
  176.             "market_cap": 54032968135.19999,
  177.             "price": 352.1602550149333,
  178.             "percent_change_60d": -18.72766515,
  179.             "volume_24h": 3975040241.706507,
  180.             "percent_change_90d": 24.3131346,
  181.             "percent_change_7d": 0.46465171
  182.         }},
  183.         "num_market_pairs": 619,
  184.         "name": "Binance Coin",
  185.         "max_supply": 170532785,
  186.         "id": 1839,
  187.         "slug": "binance-coin"
  188.     },
  189.     {
  190.         "symbol": "ADA",
  191.         "circulating_supply": 31930548128.29,
  192.         "last_updated": "2021-06-08T10:16:09.000Z",
  193.         "total_supply": 32681678108.601,
  194.         "cmc_rank": 5,
  195.         "platform": null,
  196.         "tags": [
  197.             "mineable",
  198.             "dpos",
  199.             "pos",
  200.             "platform",
  201.             "research",
  202.             "smart-contracts",
  203.             "staking",
  204.             "binance-chain"
  205.         ],
  206.         "date_added": "2017-10-01T00:00:00.000Z",
  207.         "quote": {"USD": {
  208.             "percent_change_30d": -9.47981292,
  209.             "percent_change_1h": -1.0109768,
  210.             "last_updated": "2021-06-08T10:16:09.000Z",
  211.             "percent_change_24h": -10.68780802,
  212.             "market_cap": 49082262157.72255,
  213.             "price": 1.53715689315826,
  214.             "percent_change_60d": 26.8779134,
  215.             "volume_24h": 3602351530.9447293,
  216.             "percent_change_90d": 31.00161031,
  217.             "percent_change_7d": -9.66192067
  218.         }},
  219.         "num_market_pairs": 276,
  220.         "name": "Cardano",
  221.         "max_supply": 45000000000,
  222.         "id": 2010,
  223.         "slug": "cardano"
  224.     },
  225.     {
  226.         "symbol": "DOGE",
  227.         "circulating_supply": 129939361256.40326,
  228.         "last_updated": "2021-06-08T10:17:03.000Z",
  229.         "total_supply": 129939361256.40326,
  230.         "cmc_rank": 6,
  231.         "platform": null,
  232.         "tags": [
  233.             "mineable",
  234.             "pow",
  235.             "scrypt",
  236.             "medium-of-exchange",
  237.             "memes",
  238.             "payments"
  239.         ],
  240.         "date_added": "2013-12-15T00:00:00.000Z",
  241.         "quote": {"USD": {
  242.             "percent_change_30d": -27.85005369,
  243.             "percent_change_1h": -0.39664229,
  244.             "last_updated": "2021-06-08T10:17:03.000Z",
  245.             "percent_change_24h": -12.06689716,
  246.             "market_cap": 42746878864.849754,
  247.             "price": 0.32897559639761,
  248.             "percent_change_60d": 425.01053128,
  249.             "volume_24h": 4256466078.3377676,
  250.             "percent_change_90d": 479.75690549,
  251.             "percent_change_7d": 1.48509162
  252.         }},
  253.         "num_market_pairs": 376,
  254.         "name": "Dogecoin",
  255.         "max_supply": null,
  256.         "id": 74,
  257.         "slug": "dogecoin"
  258.     },
  259.     {
  260.         "symbol": "XRP",
  261.         "circulating_supply": 46151013329,
  262.         "last_updated": "2021-06-08T10:17:03.000Z",
  263.         "total_supply": 99990399027,
  264.         "cmc_rank": 7,
  265.         "platform": null,
  266.         "tags": [
  267.             "medium-of-exchange",
  268.             "enterprise-solutions",
  269.             "binance-chain",
  270.             "arrington-xrp-capital",
  271.             "galaxy-digital-portfolio",
  272.             "a16z-portfolio",
  273.             "pantera-capital-portfolio"
  274.         ],
  275.         "date_added": "2013-08-04T00:00:00.000Z",
  276.         "quote": {"USD": {
  277.             "percent_change_30d": -42.92640139,
  278.             "percent_change_1h": -0.60106842,
  279.             "last_updated": "2021-06-08T10:17:03.000Z",
  280.             "percent_change_24h": -10.12249253,
  281.             "market_cap": 39897934998.12378,
  282.             "price": 0.8645083199734,
  283.             "percent_change_60d": -15.63161843,
  284.             "volume_24h": 4179902561.947919,
  285.             "percent_change_90d": 84.29141004,
  286.             "percent_change_7d": -14.85218801
  287.         }},
  288.         "num_market_pairs": 682,
  289.         "name": "XRP",
  290.         "max_supply": 100000000000,
  291.         "id": 52,
  292.         "slug": "xrp"
  293.     },
  294.     {
  295.         "symbol": "USDC",
  296.         "circulating_supply": 23075185630.71199,
  297.         "last_updated": "2021-06-08T10:17:04.000Z",
  298.         "total_supply": 23075185630.71199,
  299.         "cmc_rank": 8,
  300.         "platform": {
  301.             "symbol": "ETH",
  302.             "name": "Ethereum",
  303.             "token_address": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
  304.             "id": 1027,
  305.             "slug": "ethereum"
  306.         },
  307.         "tags": [
  308.             "medium-of-exchange",
  309.             "stablecoin",
  310.             "stablecoin-asset-backed"
  311.         ],
  312.         "date_added": "2018-10-08T00:00:00.000Z",
  313.         "quote": {"USD": {
  314.             "percent_change_30d": 0.05408204,
  315.             "percent_change_1h": -0.00816775,
  316.             "last_updated": "2021-06-08T10:17:04.000Z",
  317.             "percent_change_24h": 0.00649147,
  318.             "market_cap": 23084217521.810787,
  319.             "price": 1.00039141141672,
  320.             "percent_change_60d": -0.05832072,
  321.             "volume_24h": 2455031484.812885,
  322.             "percent_change_90d": 0.02446002,
  323.             "percent_change_7d": -0.0056865
  324.         }},
  325.         "num_market_pairs": 1068,
  326.         "name": "USD Coin",
  327.         "max_supply": null,
  328.         "id": 3408,
  329.         "slug": "usd-coin"
  330.     },
  331.     {
  332.         "symbol": "DOT",
  333.         "circulating_supply": 945735752.6497443,
  334.         "last_updated": "2021-06-08T10:17:05.000Z",
  335.         "total_supply": 1081259867.5039322,
  336.         "cmc_rank": 9,
  337.         "platform": null,
  338.         "tags": [
  339.             "substrate",
  340.             "polkadot",
  341.             "binance-chain",
  342.             "polkadot-ecosystem",
  343.             "three-arrows-capital-portfolio",
  344.             "polychain-capital-portfolio",
  345.             "blockchain-capital-portfolio",
  346.             "boostvc-portfolio",
  347.             "cms-holdings-portfolio",
  348.             "coinfund-portfolio",
  349.             "fabric-ventures-portfolio",
  350.             "fenbushi-capital-portfolio",
  351.             "hashkey-capital-portfolio",
  352.             "kinetic-capital",
  353.             "1confirmation-portfolio",
  354.             "placeholder-ventures-portfolio",
  355.             "pantera-capital-portfolio",
  356.             "exnetwork-capital-portfolio"
  357.         ],
  358.         "date_added": "2020-08-19T00:00:00.000Z",
  359.         "quote": {"USD": {
  360.             "percent_change_30d": -45.72649058,
  361.             "percent_change_1h": -0.3486271,
  362.             "last_updated": "2021-06-08T10:17:05.000Z",
  363.             "percent_change_24h": -15.05195784,
  364.             "market_cap": 20076748179.497543,
  365.             "price": 21.22870804370766,
  366.             "percent_change_60d": -48.77804479,
  367.             "volume_24h": 2421158822.0532265,
  368.             "percent_change_90d": -44.73258504,
  369.             "percent_change_7d": -5.5027651
  370.         }},
  371.         "num_market_pairs": 202,
  372.         "name": "Polkadot",
  373.         "max_supply": null,
  374.         "id": 6636,
  375.         "slug": "polkadot-new"
  376.     },
  377.     {
  378.         "symbol": "UNI",
  379.         "circulating_supply": 575107764.052485,
  380.         "last_updated": "2021-06-08T10:16:11.000Z",
  381.         "total_supply": 1000000000,
  382.         "cmc_rank": 10,
  383.         "platform": {
  384.             "symbol": "ETH",
  385.             "name": "Ethereum",
  386.             "token_address": "0x1f9840a85d5af5bf1d1762f925bdaddc4201f984",
  387.             "id": 1027,
  388.             "slug": "ethereum"
  389.         },
  390.         "tags": [
  391.             "decentralized-exchange",
  392.             "defi",
  393.             "dao",
  394.             "yield-farming",
  395.             "amm",
  396.             "coinbase-ventures-portfolio",
  397.             "three-arrows-capital-portfolio",
  398.             "governance",
  399.             "blockchain-capital-portfolio",
  400.             "defiance-capital",
  401.             "alameda-research-portfolio",
  402.             "a16z-portfolio",
  403.             "pantera-capital-portfolio",
  404.             "parafi-capital",
  405.             "paradigm-xzy-screener"
  406.         ],
  407.         "date_added": "2020-09-17T00:00:00.000Z",
  408.         "quote": {"USD": {
  409.             "percent_change_30d": -40.90238231,
  410.             "percent_change_1h": -0.57439386,
  411.             "last_updated": "2021-06-08T10:16:11.000Z",
  412.             "percent_change_24h": -11.84522167,
  413.             "market_cap": 13448377375.304375,
  414.             "price": 23.38409984337659,
  415.             "percent_change_60d": -23.21587997,
  416.             "volume_24h": 569769688.2472888,
  417.             "percent_change_90d": -26.98611642,
  418.             "percent_change_7d": -13.63660968
  419.         }},
  420.         "num_market_pairs": 270,
  421.         "name": "Uniswap",
  422.         "max_supply": 1000000000,
  423.         "id": 7083,
  424.         "slug": "uniswap"
  425.     },
  426.     {
  427.         "symbol": "ICP",
  428.         "circulating_supply": 124103517.19,
  429.         "last_updated": "2021-06-08T10:17:07.000Z",
  430.         "total_supply": 469293126.8967923,
  431.         "cmc_rank": 11,
  432.         "platform": null,
  433.         "tags": [
  434.             "platform",
  435.             "distributed-computing",
  436.             "polychain-capital-portfolio",
  437.             "exnetwork-capital-portfolio"
  438.         ],
  439.         "date_added": "2021-03-23T00:00:00.000Z",
  440.         "quote": {"USD": {
  441.             "percent_change_30d": 0,
  442.             "percent_change_1h": -0.08952838,
  443.             "last_updated": "2021-06-08T10:17:07.000Z",
  444.             "percent_change_24h": -15.3124386,
  445.             "market_cap": 10992912823.823347,
  446.             "price": 88.57857595601757,
  447.             "percent_change_60d": 0,
  448.             "volume_24h": 260287850.43941185,
  449.             "percent_change_90d": 0,
  450.             "percent_change_7d": -20.06340267
  451.         }},
  452.         "num_market_pairs": 33,
  453.         "name": "Internet Computer",
  454.         "max_supply": null,
  455.         "id": 8916,
  456.         "slug": "internet-computer"
  457.     },
  458. ... and so on
  459. ]

到目前为止，我一直在尝试将JSONObject转换为HashMap：

  1. HashMap<String, Object> rs = new ObjectMapper().readValue(json.toString(), HashMap.class);

但我真的不知道现在该怎么办...
有人告诉我使用Jackson或GSon或嵌套的HashMap，但我不知道它将如何解决这个问题...
有人能帮我吗？提前谢谢..！

Gson

1条答案

按热度按时间
icnyk63a

icnyk63a1#

不要使用HashMap。创建真实的数据类：

  1. public class Library {
  2.     private Book[] book = { };
  4.     public Book[] getBook() {
  5.         return book;
  6.     }
  8.     public void setBook(Book[] books) {
  9.         this.book = books;
  10.     }
  11. }
  13. public class Book {
  14.     private String id;
  15.     private String language;
  16.     private String edition;
  17.     private String author;
  19.     public String getId() {
  20.         return id;
  21.     }
  23.     public void setId(String id) {
  24.         this.id = id;
  25.     }
  27.     public String getLanguage() {
  28.         return language;
  29.     }
  31.     public void setLanguage(String language) {
  32.         this.language = language;
  33.     }
  35.     public String getEdition() {
  36.         return edition;
  37.     }
  39.     public void setEdition(String edition) {
  40.         this.edition = edition;
  41.     }
  43.     public String getAuthor() {
  44.         return author;
  45.     }
  47.     public void setAuthor(String author) {
  48.         this.author = author;
  49.     }
  50. }

现在，您可以传递Library.class而不是HashMap.class。

展开查看全部
赞(0）分享  回复(0）举报  2022-11-06
我来回答

相关问题

    查看更多

    热门标签

    更多
    JavaquerypythonNode开发语言requestUtil数据库Table后端算法LoggerMessageElementParser

    最新问答

    更多
    • 蜀ICP备13028337号-1 大数据知识库 https://www.saoniuhuo.com © All rights reserved
    • 本站内容来源互联网,如果侵犯您的权益请联系我们删除, 联系方式：448109455@qq.com