java - 使用 Objectmapper JAVA 解析 JSON

Question

这是 JSON 字符串:

{
   "d":{
      "results":[
         {
            "__metadata":{
               "uri":"http://blabla1",
               "type":"type1"
            },
            "Synonym":"miami"
         },
         {
            "__metadata":{
               "uri":"http://blabla2",
               "type":"type2"
            },
            "Synonym":"florida"
         }
      ]
   }
}

这是代码:

public class Test{        
    @JsonIgnoreProperties(ignoreUnknown = true)
    public static class d {
        public List<Results> results;
        public d() {
            results = new ArrayList<Results>();
        }
        public static class Results {
            public Metadata __metadata;
            public String Synonym;
            public Results() {}
        }
        public static class Metadata {
            public String uri;
            public String type;
            public Metadata() {}
        }
    }
}

使用以下映射器:

ObjectMapper mapper = new ObjectMapper();
Test.d readValue = mapper.readValue(jsonString, Test.d.class);
for (Test.d.Results k : readValue.results) {
    System.out.println("synonym: "+k.Synonym);
}

它没有给我任何错误，只是一个空的结果数组列表......附:我在这段时间做了很多更改，对于给您带来的不便，我们深表歉意

Answer 1

您必须创建一个符合 jSon 答案的对象，像这样(未测试):

class d {

    public List<Results> results;

    public d() {
    }
}

class Results {

    public Metadata metadata;
    public String synonym;

    public Results() {
    }
}

class Metadata {

    public String uri;
    public String type;


    public Metadata() {
    }
}

希望对您有所帮助!