json1 [Spring] Could not write JSON: Object is null HTTP Status 500 - Could not write JSON: Object is null (through reference chain: net.sf.json.JSONObject["rows"]->net.sf.json.JSONArray[0]->net.sf.json.JSONObject["uploadfile"]->net.sf.json.JSONNull["empty"]); nested exception is org.codehaus.jackson.map.JsonMappingException: Object is null (through reference chain: net.sf.json.JSONObject["rows"]->net.sf.json.JSONArray[0]->net.sf.json.JSONObject[.. 2016. 2. 26. 이전 1 다음