Json：如何使用java从单个外部Json对象提取内部Json对象

我有以下Json字符串，来自google搜索查询：

{"responseData":{"results":[{"region":"IL","streetAddress":"1611 South Randall Road","titleNoFormatting":"Brunswick Zone XL Randall Road","staticMapUrl":"http:\/\/maps.google.com\/maps\/api\/staticmap?maptype=roadmap&format=gif&sensor=false&size=150x100&zoom=13&markers=42.162958,-88.334155","listingType":"local","addressLines":["1611 South Randall Road","Algonquin, IL"],"lng":"-88.334155","phoneNumbers":[{"type":"","number":"(847) 658-2257"}],"url":"http:\/\/www.google.com\/maps\/place?source=uds&q=brunswick+zone&cid=8286591317090502839","country":"United States","city":"Algonquin","content":"","GsearchResultClass":"GlocalSearch","maxAge":604800,"title":"<b>Brunswick Zone<\/b> XL Randall Road","ddUrlToHere":"http:\/\/www.google.com\/maps?source=uds&daddr=1611+South+Randall+Road,+Algonquin,+IL+(Brunswick+Zone+XL+Randall+Road)+@42.162958,-88.334155&iwstate1=dir:to","ddUrl":"http:\/\/www.google.com\/maps?source=uds&daddr=1611+South+Randall+Road,+Algonquin,+IL+(Brunswick+Zone+XL+Randall+Road)+@42.162958,-88.334155&saddr=60102","ddUrlFromHere":"http:\/\/www.google.com\/maps?source=uds&saddr=1611+South+Randall+Road,+Algonquin,+IL+(Brunswick+Zone+XL+Randall+Road)+@42.162958,-88.334155&iwstate1=dir:from","accuracy":"8","lat":"42.162958","viewportmode":"explicit"},{"region":"IL","streetAddress":"2075 East Algonquin Road","titleNoFormatting":"Brunswick Zone Algonquin","staticMapUrl":"http:\/\/maps.google.com\/maps\/api\/staticmap?maptype=roadmap&format=gif&sensor=false&size=150x100&zoom=13&markers=42.154629,-88.265871","listingType":"local","addressLines":["2075 East Algonquin Road","Algonquin, IL"],"lng":"-88.265871","phoneNumbers":[{"type":"","number":"(847) 658-9200"}],"url":"http:\/\/www.google.com\/maps\/place?source=uds&q=brunswick+zone&cid=7798335569608325784","country":"United States","city":"Algonquin","content":"","GsearchResultClass":"GlocalSearch","maxAge":604800,"title":"<b>Brunswick Zone<\/b> Algonquin","ddUrlToHere":"http:\/\/www.google.com\/maps?source=uds&daddr=2075+East+Algonquin+Road,+Algonquin,+IL+(Brunswick+Zone+Algonquin)+@42.154629,-88.265871&iwstate1=dir:to","ddUrl":"http:\/\/www.google.com\/maps?source=uds&daddr=2075+East+Algonquin+Road,+Algonquin,+IL+(Brunswick+Zone+Algonquin)+@42.154629,-88.265871&saddr=60102","ddUrlFromHere":"http:\/\/www.google.com\/maps?source=uds&saddr=2075+East+Algonquin+Road,+Algonquin,+IL+(Brunswick+Zone+Algonquin)+@42.154629,-88.265871&iwstate1=dir:from","accuracy":"8","lat":"42.154629","viewportmode":"explicit"}],"viewport":{"center":{"lng":"-88.48145","lat":"42.281384"},"sw":{"lng":"-88.74015","lat":"42.129276"},"ne":{"lng":"-88.222755","lat":"42.43349"},"span":{"lng":"0.51739","lat":"0.304211"}},"cursor":{"moreResultsUrl":"http:\/\/www.google.com\/local?oe=utf8&ie=utf8&num=4&mrt=yp,loc&sll=37.779160,-122.420090&start=0&hl=en&q=brunswick+zone+60102","currentPageIndex":0,"estimatedResultCount":"258","pages":[{"start":"0","label":1},{"start":"4","label":2},{"start":"8","label":3},{"start":"12","label":4}]}},"responseStatus":200,"responseDetails":null}

{“responseData”：{“results”：[{“region”：“IL”，“streetAddress”：“1611南兰德尔路”，“Titlenoformating”：“Brunswick Zone XL兰德尔路”，“staticMapUrl”：“http:\/\/maps.google.com\/maps\/api\/staticmap？maptype=roadmap&format=gif&sensor=false&size=150x100&zoom=13&markers=42.162958，-.334155”，“listingType”：“local”、“addressLines”：”：[“兰德尔南路1611号”、“伊利诺伊州阿尔冈昆”、“液化天然气”：“-88.334155”、“电话号码”：[{“类型”：““号码”：”（847）658-2257“}]，“网址”：“http:\/\/www.google.com\/maps\/place？source=uds&q=brunswick+zone&cid=8286591317090502839”、“国家”：“美国”、“城市”：“阿尔冈昆”、“内容”：“GsearchResultClass”：“全球搜索”、“maxAge”：604800，“标题”：”布伦瑞克区XL兰德尔路“，”ddUrlToHere:“http:\/\/www.google.com\/maps？source=uds&daddr=1611+South+Randall+Road，+Algonquin，+IL+（布伦瑞克区+XL+Randall+Road）+@42.162958，-88.334155&iwstate1=dir:to”，“ddUrl:“http:\/\/www.google.com\/maps？source=uds&daddr=1611+South+randandall+Road，+Algonquin，+IL+（布伦瑞克区+XL+Randall+Road）+@42.162958，-88.334155&saddr=60102，“ddUrlFromHere”：“http:\/\/www.google.com\/maps？source=uds&saddr=1611+South+Randall+Road，+Algonquin，+IL+（布伦瑞克+Zone+XL+Randall+Road）+@42.162958，-88.334155&iwstate1=dir:from”，“准确性”：“8”，“lat”：“42.162958”，“视口模式”：“显式”；“地区”：“IL”，“街道地址”：“2075东Algonquin Road”，“titlenoformating”“：“布伦瑞克地区阿尔冈琴”，“静态地图url:“http:\/\/maps.google.com\/maps\/api\/staticmap？maptype=roadmap&format=gif&sensor=false&size=150x100&zoom=13&markers=42.154629，-88.265871”，“列表类型”：“本地”，“地址线”：[“2075东阿尔冈琴路”，“伊利诺伊州阿尔冈琴”]，“液化天然气”：-88.265871”，“电话号码”：[{“类型”：“号码”：（847）658-9200”），“url”：”“http:\/\/www.google.com\/maps\/place？source=uds&q=brunswick+zone&cid=7798335569608325784”，“国家”：“美国”，“城市”：“阿尔冈昆”，“内容”：“GsearchResultClass”：“GlocalSearch”，“maxAge”：604800，“标题”：“不伦瑞克区阿尔冈昆”，“ddUrlToHere”：“http:\/\/www.google.com\/maps？source=uds&daddr=2075+East+Algonquin+Road”，“阿尔冈昆”+IL+（布伦瑞克+Zone+Algonquin）+@42.154629，-88.265871&iwstate1=dir:to”，“ddUrl:“http:\/\/www.google.com\/maps？source=uds&daddr=2075+East+Algonquin+Road，+Algonquin，+IL+（布伦瑞克+Zone+Algonquin）+@42.154629，-88.265871&saddr=60102”，“ddUrlFromHere:“http:\/\/www.google.com\/maps？source=uds&saddr=2075+East+Algonquin+Road，+Algonquin，+Algonquin，”+（布伦瑞克+Zone+Algonquin）+@42.154629，-88.265871&iwstate1=dir:from”，“accurity:“8”，“lat:”42.154629”，“viewportmode:”explicit“}]，“viewport:”{“center:”{“lng:”--88.48145，“lat:”42.281384“}”，sw:{“lng:”--88.74015”，“lat:”42.129276“}”，ne:{“lng:”--88.222755”，“lat:”42.43349“，”span:”lng:”lat 0.51739“，”光标“}http:\/\/www.google.com\/local？oe=utf8&ie=utf8&num=4&mrt=yp，loc&sll=37.779160，-122.420090&start=0&hl=en&q=brunswick+zone+60102，“currentPageIndex”：0，“estimatedResultCount”：“258”，“pages”：[{“start”：“0”，“label”：1}，{“start”：“4”，“label”：2}，{“start”：“8”，“label”：3}，{“start”：“12”，“label”：4}，}，“ResponsedTails”：200}”

最外层（单个）标签为“responseData” 第一个（也是单个）嵌套标签是“结果” 在“results”对象中，我有两个相同的netsed数据集，每个数据集表示一个完整的google搜索结果，其中包含我需要的元素，例如： “标题信息”、“地址行”和“电话号码”

我正在编写我的第一个Android java应用程序，并且正在努力提取我需要的值。我已经研究了Gson和Jackson，但是，我无法为自己想出一个解决方案。我认为，部分问题可能与一个事实有关，这些内部数据集没有显式的容器名称，它们只有相同的结构：outer标签“结果”只出现一次，并且包含两个相同的数据集。

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任何人都可以提供一个如何处理这个问题的例子吗？

在Gson中，JSON中的

{}

可以映射到

Map

或一个完整的Javabean。JSON中的

[]

可以映射到

列表

或

对象[]

根据您当前的结构和Google Gson，我建议如下：

public class GoogleResults {
    private ResponseData responseData; 
    // Add/generate getter+setter.

    static class ResponseData {
        private List<Result> results;
        // Add/generate getter+setter.
    }

    static class Result {
        private String titleNoFormatting;
        private List<String> addressLines;
        private List<Map<String, String>> phoneNumbers; // Or List<PhoneNumber>
        // Add/generate getters+setters.
    }
}

---

在Gson中，JSON中的

{}

可以映射到

Map

或完整的Javabean。JSON中的

[]

可以映射到

列表

或

对象[]

根据您当前的结构和Google Gson，我建议如下：

public class GoogleResults {
    private ResponseData responseData; 
    // Add/generate getter+setter.

    static class ResponseData {
        private List<Result> results;
        // Add/generate getter+setter.
    }

    static class Result {
        private String titleNoFormatting;
        private List<String> addressLines;
        private List<Map<String, String>> phoneNumbers; // Or List<PhoneNumber>
        // Add/generate getters+setters.
    }
}

您可以使用Android从JSON字符串创建JSON对象表示

乙二醇

现在，您可以通过

length（）

迭代

结果，您可以使用Android从JSON字符串创建JSON对象表示

乙二醇

现在，您可以通过
length（）
对
结果进行迭代

JSONObject json = new JSONObject("..."); //Where the string value is the JSON from your question.
JSONArray results = json.getJSONObject("responseData").getJSONArray("results);