Expected map for property [fields] on field [fileName] but got a class java.lang.String

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Expected map for property [fields] on field [fileName] but got a class java.lang.String

def set_fielddata(index='event_tk'):
    try:
        data = {
            "properties":{
                "camera_position": "text",
                 'fielddata': True
                 }
        }
        DNS_API = 'http://127.0.0.1:9200/' + index + '/_mapping/koala-index'  # dns_test_v2为索引名
        # resp = requests.delete(DNS_API, headers=header)
        resp = requests.post(DNS_API, headers=header, data=json.dumps(data))
        print(resp.status_code)
        if resp.status_code == 200:
            print(u"set_fielddata ok")
        else:
            print(resp.text)
    except Exception as e:
        print(e, u"建立索引失败")

正确代码：

import json
import requests

import global_var

header = {'Content-Type': 'application/json'}


def set_fielddata(ip,index,doc_type):
    try:
        data = {
            "properties":{
                "camera.deviceId":
                    {'type': "text",
                 'fielddata': True}
                 }
        }
        DNS_API = 'http://'+ip+"/" + index + '/_mapping/'+doc_type  # dns_test_v2为索引名
        # resp = requests.delete(DNS_API, headers=header)
        resp = requests.post(DNS_API, headers=header, data=json.dumps(data))
        print(resp.status_code)
        if resp.status_code == 200:
            print(u"set_fielddata ok")
        else:
            print(resp.text)
    except Exception as e:
        print(e, u"建立索引失败")

def max_count(index='event_tk'):
    try:
        data={'index' : { "max_result_window" : 100000000}}
        DNS_API = 'http://192.168.1.152:9200/'+index+'/_settings'  # dns_test_v2为索引名
        # resp = requests.delete(DNS_API, headers=header)
        resp = requests.put(DNS_API, headers=header, data=json.dumps(data).encode())
        print(resp.status_code)
        if resp.status_code == 200:
            print(u"max ok")
        else:
            print(resp.text)
    except Exception as e:
        print(e, u"建立索引失败")

if __name__ == '__main__':
    ip='192.168.55.66:9200'

    set_fielddata(ip,global_var.index_name,global_var.doc_type)
    # max_count()