JAVA入门到精通-fastJSON判断多层嵌套JSON数据中是否包含特定key

判断多层嵌套JSON数据中是否包含特定key
 

获取复杂json 某个指定key的值

添加依赖:
      <dependency>
            <groupId>com.jayway.jsonpath</groupId>
            <artifactId>json-path</artifactId>
            <version>2.4.0</version>
        </dependency>
        
github: https://github.com/json-path/JsonPath        
    
代码demo：
JSONObject dataJson = new JSONObject();
dataJson.put("a", "123");
JSONObject aJson = new JSONObject();
aJson.put("b", "456123213123");
dataJson.put("c", aJson);
System.out.println(JsonPath.read(dataJson.toJSONString(), "@.c.b"));   

  

   

    

     

    
    

     

      public static  void  main(String[] args){
     
    
   

    

     

    
    

     
        String jsonStr ="{\"properties\":{\"user_utt\":{\"fielddata\":\"111\",\"analyzer\":\"ngram_analyzer\",\"term_vector\":\"yes\",\"type\":\"text\"},\"user_utt_lemma_yomi\":{\"fielddata\":\"true\",\"analyzer\":\"whitespace\",\"term_vector\":\"yes\",\"type\":\"text\"},\"ui_reserve2\":{\"index\":\"not_analyzed\",\"type\":\"keyword\",\"type1\":\"keyword\"},\"ui_reserve1\":{\"index\":\"not_analyzed\",\"type\":\"keyword\"},\"add_utt\":{\"index\":\"not_analyzed\",\"type\":\"keyword\"},\"topic\":{\"index\":\"not_analyzed\",\"type\":\"keyword\"},\"current_status\":{\"index\":\"not_analyzed\",\"type\":\"integer\"},\"original_user_utt\":{\"index\":\"not_analyzed\",\"type\":\"keyword\"},\"user_utt_length\":{\"index\":\"not_analyzed\",\"type\":\"long\"},\"user_utt_lemma\":{\"fielddata\":\"true\",\"analyzer\":\"whitespace\",\"term_vector\":\"yes\",\"type\":\"text\"},\"subtopic\":{\"index\":\"not_analyzed\",\"type\":\"keyword\"}}}";
     
    
   

    

     

    
    

     
        JSONObject jsonObject = JSON.parseObject(jsonStr);
     
    
   

    

     

    
    

     
        JSONObject dataJson = new JSONObject();
     
    
   

    

     

    
    

     

              dataJson.put("a", "123");
     
    
   

    

     

    
    

     
        JSONObject aJson = new JSONObject();
     
    
   

    

     

    
    

     

              aJson.put("b", "456123213123");
     
    
   

    

     

    
    

     

              dataJson.put("c", aJson);
     
    
   

    

     

    
    

     
        Object object = JsonPath.read(dataJson.toJSONString(), "*.b");
     
    
   

    

     

    
    

     
        System.out.println(dataJson.toJSONString());
     
    
   

    

     

    
    

     
        System.out.println(object);
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
        Object object2 = JsonPath.read(jsonStr, ".type");
     
    
   

    

     

    
    

     
        System.out.println(object2);
     
    
   

    

     

    
    

     
        System.out.println("key：" + getKeyFormJson(jsonObject,"analyzer"));
     
    
   

    

     

    
    

     

          }
     
    
  
 

文章来源: blog.csdn.net，作者：隔壁老瓦，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/wxb880114/article/details/106015754