java.lang.ClassCastException: com.google.gson.internal.LinkedTreeMap cannot be cast to
2018-01-03 17:45
1131 查看
在做android解析服务器传来的json时遇到的错误。
服务器传来的数据格式
[java] view
plain copy
[{"title":"qq","aipPath":"/jeesite/userfiles/bda5e6b04dee47d6ba64386190f4d434/accept/2016/09/1474182626803_nbspd.aip","delFlag":"0","
id":"7ef6815938394fce88a5873312b661e4","isNewRecord":false}]
之前对应的代码如下:
[java] view
plain copy
public static <T> List<T> getObjectList(String jsonString,Class<T> cls){
List<T> list = new ArrayList<T>();
try {
Gson gson = new Gson();
list = gson.fromJson(jsonString, new TypeToken<List<T>>(){}.getType());
} catch (Exception e) {
e.printStackTrace();
}
return list;
}
以上解析方法是错误的,修改如下代码:
[java] view
plain copy
public static <T> List<T> getObjectList(String jsonString,Class<T> cls){
List<T> list = new ArrayList<T>();
try {
Gson gson = new Gson();
JsonArray arry = new JsonParser().parse(jsonString).getAsJsonArray();
for (JsonElement jsonElement : arry) {
list.add(gson.fromJson(jsonElement, cls));
}
} catch (Exception e) {
e.printStackTrace();
}
return list;
}
做这个时候一定要根据自己的数据格式来确定使用的方法。
服务器传来的数据格式
[java] view
plain copy
[{"title":"qq","aipPath":"/jeesite/userfiles/bda5e6b04dee47d6ba64386190f4d434/accept/2016/09/1474182626803_nbspd.aip","delFlag":"0","
id":"7ef6815938394fce88a5873312b661e4","isNewRecord":false}]
之前对应的代码如下:
[java] view
plain copy
public static <T> List<T> getObjectList(String jsonString,Class<T> cls){
List<T> list = new ArrayList<T>();
try {
Gson gson = new Gson();
list = gson.fromJson(jsonString, new TypeToken<List<T>>(){}.getType());
} catch (Exception e) {
e.printStackTrace();
}
return list;
}
以上解析方法是错误的,修改如下代码:
[java] view
plain copy
public static <T> List<T> getObjectList(String jsonString,Class<T> cls){
List<T> list = new ArrayList<T>();
try {
Gson gson = new Gson();
JsonArray arry = new JsonParser().parse(jsonString).getAsJsonArray();
for (JsonElement jsonElement : arry) {
list.add(gson.fromJson(jsonElement, cls));
}
} catch (Exception e) {
e.printStackTrace();
}
return list;
}
做这个时候一定要根据自己的数据格式来确定使用的方法。
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