JSONArray [0]不是JSONObject异常

时间:2015-11-02 05:25:24

标签: java json

我正在尝试从以下Json String

中提取每个company_id中的id
   String test = ["{\"company_id\":4100,\"data\":{\"drm_user_id\":572901936637129135,\"direct_status_id\":0,\"direct_optin_date\":0,\"direct_first_optin_date\":0,\"direct_last_optin_date\":0,\"direct_optout_date\":0,\"direct_last_form_date\":0,\"direct_last_form_id\":0,\"direct_last_promo_id\":0,\"anon_status_id\":600,\"anon_optin_date\":1446132360498,\"anon_first_optin_date\":1446132360498,\"anon_last_optin_date\":1446132360498,\"anon_optout_date\":0,\"anon_last_form_date\":1446132360498,\"anon_last_form_id\":101,\"anon_last_promo_id\":1002003,\"last_registration_date\":1446132360498,\"mp_status_id\":600,\"mp_control_state\":-1,\"mp_match_date\":0,\"mp_vs_version\":0,\"mp_initial_value_segment\":0,\"mp_id\":0,\"conversion_last_form_date\":0,\"conversion_last_form_id\":0,\"conversion_last_promo_id\":-1,\"last_message_date\":1446132368928,\"cg_version\":0,\"cg_version_date\":0,\"num_anon_messages_global\":0,\"num_anon_messages_global_date\":0,\"reg_creator_id\":576,\"reg_form_id\":101,\"reg_method_id\":1,\"reg_creator_type_id\":1},\"personal_data\":{\"version\":0,\"personal_data\":\"{}\",\"mdc_data\":{\"version\":0},\"custom_data\":\"{}\"},\"category_data\":{},\"campaignImpressions\":{},\"journeyStartDate\":0}","{\"company_id\":4045,\"data\":{\"drm_user_id\":572901936637129135,\"direct_status_id\":0,\"direct_optin_date\":0,\"direct_first_optin_date\":0,\"direct_last_optin_date\":0,\"direct_optout_date\":0,\"direct_last_form_date\":0,\"direct_last_form_id\":0,\"direct_last_promo_id\":0,\"anon_status_id\":600,\"anon_optin_date\":1446132360498,\"anon_first_optin_date\":1446132360498,\"anon_last_optin_date\":1446132360498,\"anon_optout_date\":0,\"anon_last_form_date\":1446132360498,\"anon_last_form_id\":101,\"anon_last_promo_id\":1002003,\"last_registration_date\":1446132360498,\"mp_status_id\":600,\"mp_control_state\":-1,\"mp_match_date\":0,\"mp_vs_version\":0,\"mp_initial_value_segment\":0,\"mp_id\":0,\"conversion_last_form_date\":0,\"conversion_last_form_id\":0,\"conversion_last_promo_id\":-1,\"last_message_date\":1446132368928,\"cg_version\":0,\"cg_version_date\":0,\"num_anon_messages_global\":0,\"num_anon_messages_global_date\":0,\"reg_creator_id\":576,\"reg_form_id\":101,\"reg_method_id\":1,\"reg_creator_type_id\":1},\"personal_data\":{\"version\":0,\"personal_data\":\"{}\",\"mdc_data\":{\"version\":0},\"custom_data\":\"{}\"},\"category_data\":{},\"campaignImpressions\":{},\"journeyStartDate\":0}","{\"company_id\":2979,\"data\":{\"drm_user_id\":572901936637129135,\"direct_status_id\":0,\"direct_optin_date\":0,\"direct_first_optin_date\":0,\"direct_last_optin_date\":0,\"direct_optout_date\":0,\"direct_last_form_date\":0,\"direct_last_form_id\":0,\"direct_last_promo_id\":0,\"anon_status_id\":600,\"anon_optin_date\":1446132360498,\"anon_first_optin_date\":1446132360498,\"anon_last_optin_date\":1446132360498,\"anon_optout_date\":0,\"anon_last_form_date\":1446132360498,\"anon_last_form_id\":101,\"anon_last_promo_id\":1002003,\"last_registration_date\":1446132360498,\"mp_status_id\":600,\"mp_control_state\":-1,\"mp_match_date\":0,\"mp_vs_version\":0,\"mp_initial_value_segment\":0,\"mp_id\":0,\"conversion_last_form_date\":0,\"conversion_last_form_id\":0,\"conversion_last_promo_id\":-1,\"last_message_date\":1446132368928,\"cg_version\":0,\"cg_version_date\":0,\"num_anon_messages_global\":0,\"num_anon_messages_global_date\":0,\"reg_creator_id\":576,\"reg_form_id\":101,\"reg_method_id\":1,\"reg_creator_type_id\":1},\"personal_data\":{\"version\":0,\"personal_data\":\"{}\",\"mdc_data\":{\"version\":0},\"custom_data\":\"{}\"},\"category_data\":{},\"campaignImpressions\":{},\"journeyStartDate\":0}"]

我想从company_id中提取所有ID。我对Json很新,我不知道我是否做得正确。这是我到目前为止所拥有的。

JSONArray arr = new JSONArray(test);
   for (int i = 0; i < arr.length(); i++){  
        JSONObject jsonObject = arr.getJSONObject(0);

   }

我在foor循环中得到 JSONArray [0]不是JSONObject

谢谢

1 个答案:

答案 0 :(得分:2)

test不是JSONArray,test是JSONObject。你真正想做的是:

JSONObject obj = new JSONObject(test);

然后您可以使用以下命令访问company_id的值:

obj.get("company_id");

仅供将来参考,JSON中的对象由花括号({})定义,而数组由方括号([])定义。

编辑:这是假设您打算将方括号留在String的外部,这将是语法错误。如果您希望它们位于String的内部,那么您的代码应该可以正常工作。

EDIT2:仔细观察JSON,有很多问题。这是一个有效的版本:

String test = "[{\"company_id\":4100,\"data\":{\"drm_user_id\":572901936637129135,\"direct_status_id\":0,\"direct_optin_date\":0,\"direct_first_optin_date\":0,\"direct_last_optin_date\":0,\"direct_optout_date\":0,\"direct_last_form_date\":0,\"direct_last_form_id\":0,\"direct_last_promo_id\":0,\"anon_status_id\":600,\"anon_optin_date\":1446132360498,\"anon_first_optin_date\":1446132360498,\"anon_last_optin_date\":1446132360498,\"anon_optout_date\":0,\"anon_last_form_date\":1446132360498,\"anon_last_form_id\":101,\"anon_last_promo_id\":1002003,\"last_registration_date\":1446132360498,\"mp_status_id\":600,\"mp_control_state\":-1,\"mp_match_date\":0,\"mp_vs_version\":0,\"mp_initial_value_segment\":0,\"mp_id\":0,\"conversion_last_form_date\":0,\"conversion_last_form_id\":0,\"conversion_last_promo_id\":-1,\"last_message_date\":1446132368928,\"cg_version\":0,\"cg_version_date\":0,\"num_anon_messages_global\":0,\"num_anon_messages_global_date\":0,\"reg_creator_id\":576,\"reg_form_id\":101,\"reg_method_id\":1,\"reg_creator_type_id\":1},\"personal_data\":{\"version\":0,\"personal_data\":\"{}\",\"mdc_data\":{\"version\":0},\"custom_data\":\"{}\"},\"category_data\":{},\"campaignImpressions\":{},\"journeyStartDate\":0},{\"company_id\":4045,\"data\":{\"drm_user_id\":572901936637129135,\"direct_status_id\":0,\"direct_optin_date\":0,\"direct_first_optin_date\":0,\"direct_last_optin_date\":0,\"direct_optout_date\":0,\"direct_last_form_date\":0,\"direct_last_form_id\":0,\"direct_last_promo_id\":0,\"anon_status_id\":600,\"anon_optin_date\":1446132360498,\"anon_first_optin_date\":1446132360498,\"anon_last_optin_date\":1446132360498,\"anon_optout_date\":0,\"anon_last_form_date\":1446132360498,\"anon_last_form_id\":101,\"anon_last_promo_id\":1002003,\"last_registration_date\":1446132360498,\"mp_status_id\":600,\"mp_control_state\":-1,\"mp_match_date\":0,\"mp_vs_version\":0,\"mp_initial_value_segment\":0,\"mp_id\":0,\"conversion_last_form_date\":0,\"conversion_last_form_id\":0,\"conversion_last_promo_id\":-1,\"last_message_date\":1446132368928,\"cg_version\":0,\"cg_version_date\":0,\"num_anon_messages_global\":0,\"num_anon_messages_global_date\":0,\"reg_creator_id\":576,\"reg_form_id\":101,\"reg_method_id\":1,\"reg_creator_type_id\":1},\"personal_data\":{\"version\":0,\"personal_data\":\"{}\",\"mdc_data\":{\"version\":0},\"custom_data\":\"{}\"},\"category_data\":{},\"campaignImpressions\":{},\"journeyStartDate\":0},{\"company_id\":2979,\"data\":{\"drm_user_id\":572901936637129135,\"direct_status_id\":0,\"direct_optin_date\":0,\"direct_first_optin_date\":0,\"direct_last_optin_date\":0,\"direct_optout_date\":0,\"direct_last_form_date\":0,\"direct_last_form_id\":0,\"direct_last_promo_id\":0,\"anon_status_id\":600,\"anon_optin_date\":1446132360498,\"anon_first_optin_date\":1446132360498,\"anon_last_optin_date\":1446132360498,\"anon_optout_date\":0,\"anon_last_form_date\":1446132360498,\"anon_last_form_id\":101,\"anon_last_promo_id\":1002003,\"last_registration_date\":1446132360498,\"mp_status_id\":600,\"mp_control_state\":-1,\"mp_match_date\":0,\"mp_vs_version\":0,\"mp_initial_value_segment\":0,\"mp_id\":0,\"conversion_last_form_date\":0,\"conversion_last_form_id\":0,\"conversion_last_promo_id\":-1,\"last_message_date\":1446132368928,\"cg_version\":0,\"cg_version_date\":0,\"num_anon_messages_global\":0,\"num_anon_messages_global_date\":0,\"reg_creator_id\":576,\"reg_form_id\":101,\"reg_method_id\":1,\"reg_creator_type_id\":1},\"personal_data\":{\"version\":0,\"personal_data\":\"{}\",\"mdc_data\":{\"version\":0},\"custom_data\":\"{}\"},\"category_data\":{},\"campaignImpressions\":{},\"journeyStartDate\":0}]";