我理解这个问题已经被多次询问了，我已经看了很多例子和问题以及答案。然而，即使看看我认为应该是正确的，我仍然从org.json.JSONException的logcat获取错误：org.json.JSON.typeMismatch（JSON.java:100）的值。对于如何从json中提取信息或json中的某些内容导致它发生，我有一些困惑。我正在努力找到这两个。
从这里开始是完整的json
{
"data": "{\"haz\":[{\"id\":220121,\"rwn\":\"US-90 EAST\",\"dir\":0,\"cs\":\"MCCART ST\",\"lat\":29.777589,\"lon\":-95.284037,\"acc\":\"Minor Accident/Collision\",\"vi\":3,\"la\":\"Alternate Lanes\",\"mlb\":2,\"flb\":2,\"rlb\":0,\"hlb\":0,\"slb\":1,\"omb\":0,\"osb\":0,\"dc\":\"5/28/2014 4:34:41 AM\",\"dm\":\"12/31/9999 11:59:59 PM\",\"sum\":\"Right Shoulder, Right Lane, Center Lane\",\"toa\":0,\"toi\":0}],\"accident\":[{\"id\":220116,\"rwn\":\"IH-10 KATY\",\"dir\":0,\"cs\":\"WESTGREEN BLVD\",\"lat\":29.78518,\"lon\":-95.73529,\"acc\":\"Major Accident/Collision\",\"vi\":1,\"la\":\"Alternate Lanes\",\"mlb\":2,\"flb\":0,\"rlb\":0,\"hlb\":0,\"slb\":0,\"omb\":0,\"osb\":0,\"dc\":\"5/28/2014 3:40:24 AM\",\"dm\":\"12/31/9999 11:59:59 PM\",\"sum\":\"Left Lane, Center Lane\",\"toa\":2,\"toi\":1},{\"id\":220130,\"rwn\":\"IH-45 GULF\",\"dir\":4,\"cs\":\"SCARSDALE BLVD\",\"lat\":29.599,\"lon\":-95.1976,\"acc\":\"Minor Accident/Collision\",\"vi\":2,\"la\":\"Alternate Lanes\",\"mlb\":1,\"flb\":0,\"rlb\":0,\"hlb\":0,\"slb\":0,\"omb\":0,\"osb\":0,\"dc\":\"5/28/2014 6:11:32 AM\",\"dm\":\"12/31/9999 11:59:59 PM\",\"sum\":\"Center Lane\",\"toa\":1,\"toi\":1},{\"id\":220129,\"rwn\":\"IH-45 GULF\",\"dir\":4,\"cs\":\"SCARSDALE BLVD\",\"lat\":29.599,\"lon\":-95.1976,\"acc\":\"Minor Accident/Collision\",\"vi\":2,\"la\":\"Alternate Lanes\",\"mlb\":0,\"flb\":0,\"rlb\":0,\"hlb\":0,\"slb\":0,\"omb\":0,\"osb\":0,\"dc\":\"5/28/2014 6:06:19 AM\",\"dm\":\"12/31/9999 11:59:59 PM\",\"sum\":\"Unknown\",\"toa\":1,\"toi\":1},{\"id\":220127,\"rwn\":\"IH-45 NORTH\",\"dir\":4,\"cs\":\"N MAIN ST\",\"lat\":29.79018,\"lon\":-95.37202,\"acc\":\"Minor Accident/Collision\",\"vi\":2,\"la\":\"Alternate Lanes\",\"mlb\":1,\"flb\":0,\"rlb\":0,\"hlb\":0,\"slb\":0,\"omb\":0,\"osb\":0,\"dc\":\"5/28/2014 5:45:21 AM\",\"dm\":\"12/31/9999 11:59:59 PM\",\"sum\":\"Left Lane\",\"toa\":1,\"toi\":1},{\"id\":220131,\"rwn\":\"IH-610 SOUTH LOOP\",\"dir\":0,\"cs\":\"SH-225\",\"lat\":29.7096,\"lon\":-95.2674,\"acc\":\"Major Accident/Collision\",\"vi\":2,\"la\":\"Alternate Lanes\",\"mlb\":2,\"flb\":0,\"rlb\":0,\"hlb\":0,\"slb\":0,\"omb\":0,\"osb\":0,\"dc\":\"5/28/2014 6:18:55 AM\",\"dm\":\"12/31/9999 11:59:59 PM\",\"sum\":\"Right Lane, Center Lane\",\"toa\":1,\"toi\":1},{\"id\":220126,\"rwn\":\"SOUTH SAM HOUSTON TOLLWAY\",\"dir\":0,\"cs\":\"FUQUA\",\"lat\":29.60503,\"lon\":-95.47413,\"acc\":\"Major Accident/Collision\",\"vi\":2,\"la\":\"Alternate Lanes\",\"mlb\":1,\"flb\":0,\"rlb\":0,\"hlb\":0,\"slb\":1,\"omb\":0,\"osb\":0,\"dc\":\"5/28/2014 5:44:54 AM\",\"dm\":\"12/31/9999 11:59:59 PM\",\"sum\":\"Left Shoulder, Left Lane\",\"toa\":1,\"toi\":1}],\"highwater\":[{\"id\":220123,\"rwn\":\"IH-610 NORTH LOOP\",\"dir\":3,\"cs\":\"IH-45 NORTH\",\"lat\":29.8132,\"lon\":-95.3752,\"acc\":\"Minor Accident/Collision\",\"vi\":0,\"la\":\"Alternate Lanes\",\"mlb\":0,\"flb\":0,\"rlb\":1,\"hlb\":0,\"slb\":0,\"omb\":0,\"osb\":0,\"dc\":\"5/28/2014 4:53:25 AM\",\"dm\":\"12/31/9999 11:59:59 PM\",\"sum\":\"Exit Ramp\",\"toa\":0,\"toi\":2},{\"id\":220118,\"rwn\":\"US-290 NORTHWEST\",\"dir\":0,\"cs\":\"FM-529\",\"lat\":29.8795,\"lon\":-95.569,\"acc\":\"Minor Accident/Collision\",\"vi\":0,\"la\":\"Alternate Lanes\",\"mlb\":0,\"flb\":1,\"rlb\":0,\"hlb\":0,\"slb\":0,\"omb\":0,\"osb\":0,\"dc\":\"5/28/2014 4:12:17 AM\",\"dm\":\"12/31/9999 11:59:59 PM\",\"sum\":\"1 Frontage Road Lane\",\"toa\":0,\"toi\":2},{\"id\":220124,\"rwn\":\"US-90 ALTERNATE\",\"dir\":0,\"cs\":\"Lane Dr\",\"lat\":29.573644,\"lon\":-95.773905,\"acc\":\"Minor Accident/Collision\",\"vi\":0,\"la\":\"Alternate Lanes\",\"mlb\":0,\"flb\":0,\"rlb\":0,\"hlb\":0,\"slb\":0,\"omb\":0,\"osb\":0,\"dc\":\"5/28/2014 5:03:40 AM\",\"dm\":\"12/31/9999 11:59:59 PM\",\"sum\":\"Unknown\",\"toa\":0,\"toi\":2},{\"id\":220125,\"rwn\":\"US-90 ALTERNATE\",\"dir\":0,\"cs\":\"Chimney Rock Rd\",\"lat\":29.640602,\"lon\":-95.482381,\"acc\":\"Minor Accident/Collision\",\"vi\":0,\"la\":\"Alternate Lanes\",\"mlb\":0,\"flb\":0,\"rlb\":0,\"hlb\":0,\"slb\":0,\"omb\":0,\"osb\":0,\"dc\":\"5/28/2014 5:06:48 AM\",\"dm\":\"12/31/9999 11:59:59 PM\",\"sum\":\"Unknown\",\"toa\":0,\"toi\":2}],\"ice\":null,\"lostload\":[{\"id\":220122,\"rwn\":\"IH-10 EAST\",\"dir\":3,\"cs\":\"FREEPORT BLVD\",\"lat\":29.7707,\"lon\":-95.1778,\"acc\":\"Minor Accident/Collision\",\"vi\":0,\"la\":\"Alternate Lanes\",\"mlb\":0,\"flb\":2,\"rlb\":0,\"hlb\":0,\"slb\":0,\"omb\":0,\"osb\":0,\"dc\":\"5/28/2014 4:34:54 AM\",\"dm\":\"12/31/9999 11:59:59 PM\",\"sum\":\"2 Frontage Road Lanes\",\"toa\":0,\"toi\":4}],\"roaddebris\":[{\"id\":220117,\"rwn\":\"US-290 NORTHWEST\",\"dir\":3,\"cs\":\"FM-529\",\"lat\":29.8369039,\"lon\":-95.4991506,\"acc\":\"Minor Accident/Collision\",\"vi\":0,\"la\":\"Alternate Lanes\",\"mlb\":0,\"flb\":2,\"rlb\":0,\"hlb\":0,\"slb\":0,\"omb\":0,\"osb\":0,\"dc\":\"5/28/2014 4:11:35 AM\",\"dm\":\"12/31/9999 11:59:59 PM\",\"sum\":\"2 Frontage Road Lanes\",\"toa\":0,\"toi\":5}],\"stall\":[{\"id\":220128,\"rwn\":\"IH-45 NORTH\",\"dir\":4,\"cs\":\"N MAIN ST\",\"lat\":29.79018,\"lon\":-95.37202,\"acc\":\"Major Accident/Collision\",\"vi\":1,\"la\":\"Center Lane\",\"mlb\":1,\"flb\":0,\"rlb\":0,\"hlb\":0,\"slb\":0,\"omb\":0,\"osb\":0,\"dc\":\"5/28/2014 6:03:41 AM\",\"dm\":\"12/31/9999 11:59:59 PM\",\"sum\":\"Left Lane, Center Lane\",\"toa\":0,\"toi\":6},{\"id\":220129,\"rwn\":\"IH-45 GULF\",\"dir\":4,\"cs\":\"SCARSDALE BLVD\",\"lat\":29.599,\"lon\":-95.3586,\"acc\":\"Minor Accident/Collision\",\"vi\":2,\"la\":\"Alternate Lanes\",\"mlb\":0,\"flb\":0,\"rlb\":0,\"hlb\":0,\"slb\":0,\"omb\":0,\"osb\":0,\"dc\":\"5/28/2014 6:06:19 AM\",\"dm\":\"12/31/9999 11:59:59 PM\",\"sum\":\"Unknown\",\"toa\":0,\"toi\":6}],\"fire\":[{\"id\":220119,\"rwn\":\"BELTWAY 8-NORTH\",\"dir\":0,\"cs\":\"LEE RD\",\"lat\":29.9396,\"lon\":-95.3034,\"acc\":\"Minor Accident/Collision\",\"vi\":0,\"la\":\"Alternate Lanes\",\"mlb\":0,\"flb\":2,\"rlb\":0,\"hlb\":0,\"slb\":0,\"omb\":0,\"osb\":0,\"dc\":\"5/28/2014 4:22:56 AM\",\"dm\":\"12/31/9999 11:59:59 PM\",\"sum\":\"2 Frontage Road Lanes\",\"toa\":0,\"toi\":7}]}",
"error": 0,
"when": "6/6/2016 12:33:59 PM"}
对于解析，我试图像
那样做JSONObject reader = new JSONObject(results);
JSONObject data = reader.getJSONObject("data");
我相信“数据”是读者的JSONObject，本身充满了无数的JSONArray。这是在尝试阅读我认为是名为“数据”的JSON对象时引发错误的地方
错误（仅显示整个json字符串吐出的片段）
org.json.JSONException: Value {"haz":[{"id":220121,"rwn":"US-90 EAST","dir":0,"cs":"MCCART ST","
at org.json.JSON.typeMismatch(JSON.java:100)
有人在这里看到我做错了吗？
以下是我从回调函数
获取错误信息的完整代码IncidentsList incidentsList = new IncidentsList();
JSONObject reader = new JSONObject(results);
int error = reader.getInt("error");
//there should always be a value for errors
incidentsList.ERRORS = error == 1;
//no errors, continue
if(error == 0){
Log.i("jsonreader", "no errors, read data object");
JSONObject data = reader.getJSONObject("data");
Log.i("jsonreader", "read data object");
}
它永远不会超过JSONObject data = reader.getJSONObject（“data”）; logcat从不显示第二个info语句
由于
答案 0 :(得分：0)
您的json字符串无效。它应该像
那样结束 "toi": 2
}]
},
"errors": 0
}
但其结尾如
"toi": 2
}], <------- this comma shouldn't be there
},
"errors": 0
}
<强>更新
错误是"data": "{\"haz\":。它应该是"data": {\"haz\":
并且应该像
一样结束 },
"error": 0,
"when": "6/6/2016 12:33:59 PM"
}
答案 1 :(得分：0)
我相信＆＃34;数据＆＃34;是读者的JSONObject
不，它实际上是一个字符串。请注意括号前的引用。
"data": "{
如果您可以控制JSON，我建议您将其作为一个对象，以便更容易阅读和解析。
答案 2 :(得分：0)
JSON格式有额外的逗号“，”正如@ Rohit5k2所说， 我建议你使用GSON轻松解析你的JSON， 而不是通过jsonObject和jsonArray解析每个元素。
您的GSON模型类可以
import com.google.gson.Gson;
import java.util.List;
public class Resp {
public DataEntity data;
public int errors;
public static Resp objectFromData(String str) {
return new Gson().fromJson(str, Resp.class);
}
public static class DataEntity {
public List<HazEntity> haz;
public List<AccidentEntity> accident;
public List<HighwaterEntity> highwater;
public static DataEntity objectFromData(String str) {
return new Gson().fromJson(str, DataEntity.class);
}
public static class HazEntity {
public int id;
public String rwn;
public int dir;
public String cs;
public double lat;
public double lon;
public String acc;
public int vi;
public String la;
public int mlb;
public int flb;
public int rlb;
public int hlb;
public int slb;
public int omb;
public int osb;
public String dc;
public String dm;
public String sum;
public int toa;
public int toi;
public static HazEntity objectFromData(String str) {
return new Gson().fromJson(str, HazEntity.class);
}
}
public static class AccidentEntity {
public int id;
public String rwn;
public int dir;
public String cs;
public double lat;
public double lon;
public String acc;
public int vi;
public String la;
public int mlb;
public int flb;
public int rlb;
public int hlb;
public int slb;
public int omb;
public int osb;
public String dc;
public String dm;
public String sum;
public int toa;
public int toi;
public static AccidentEntity objectFromData(String str) {
return new Gson().fromJson(str, AccidentEntity.class);
}
}
public static class HighwaterEntity {
public int id;
public String rwn;
public int dir;
public String cs;
public double lat;
public double lon;
public String acc;
public int vi;
public String la;
public int mlb;
public int flb;
public int rlb;
public int hlb;
public int slb;
public int omb;
public int osb;
public String dc;
public String dm;
public String sum;
public int toa;
public int toi;
public static HighwaterEntity objectFromData(String str) {
return new Gson().fromJson(str, HighwaterEntity.class);
}
}
}
}