1 import com.jayway.jsonpath.JsonPath; 2 import com.jayway.jsonpath.Predicate; 3 import net.minidev.json.JSONArray; 4 public class Test {     5     public static String readjson(String json, String jsonPath) {         6         try 7         { 8             Object value = JsonPath.read(json, jsonPath, new Predicate[0]);             9             if (value instanceof Integer)10               {11                 return value.toString();12               }else if (value instanceof String)13               {14                     return value.toString();15               }else if (value instanceof Boolean)16               {17                     return value.toString();18               }else if (value instanceof JSONArray)19               {20                   JSONArray arr = (JSONArray)value;21                   if(!arr.isEmpty()){
    return arr.toJSONString();}                  22                   return "";23               }else if (value instanceof LinkedHashMap)24               {25                     return value.toString();26               }else if (value instanceof float)27               {28                     return value.toString();29               }else{30                   return  value.toString();31               }32         }33         catch(Exception e){34             return "pathnotfound";35         }        36     }    37 }38 //------------------------------------------------------------------------------------------------------------------39 public static void fun(){40     String response_data=prev.getResponseDataAsString();//prev为JMeter预定义变量41     String JsonPath="$.data.detail.length()";42     String result=Test.readjson(response_data,JsonPath);43     int resultToNum=Integer.parseInt(result);44     log.info("------------------------详情长度："+result+"----------------------");45 }46 fun();