我有一个json对象,其中包含有关评估表单的详细信息以及其中的json数组,其中包含有关评估问题的信息(例如questionId,答案说明,用户上传的某些问题的图片)。我想将此评估信息发送到带有排球库的服务器。为此,我准备了一个json对象,如下所示:
{"evaluation":{"UserID":1,"EvaluationDate":"2018\/29\/12","EvaluationDetailsList":
[{"QuestionID":1,"Description":null,"Image":null,"PercentScore":0,"QuestionResponseID":3},
"QuestionID":2,"Description":null,"Image":null,"PercentScore":0,"QuestionResponseID":3},
"QuestionID":3,"Description":null,"Image":null,"PercentScore":0,"QuestionResponseID":3},
{"QuestionID":4,"Description":null,"Image":"B@927f5e6","PercentScore":0,"QuestionResponseID":3}]}}
EvaluationDetailsList是我关于评估问题的Json数组。当我使用空的Image字段发送发布请求时,代码可以正常工作,但是当我在Image字段中放置字节数组时出现错误。我用谷歌搜索如何用volley将字节数组发送到Web服务器。答案是使用凌空抽射的MultiPartRequest。但是当Image字段位于嵌套的json对象内部时,我不知道如何使用此请求方法。这是我向服务器发送请求:
public void sendEvalResult(final JSONObject jsonObject, final ResultCallBack resultCallBack){
JSONObject finalObject=new JSONObject();
try {
finalObject.put("evaluation",jsonObject);
} catch (JSONException e) {
e.printStackTrace();
}
JsonObjectRequest req=new JsonObjectRequest(Request.Method.POST, Post_Evaluation_Result, finalObject,new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
resultCallBack.onGetResult(null);
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
resultCallBack.onFailedGet();
}
}){
@Override
public String getBodyContentType() {
return "application/json;";
}
};
AppSingleton.getInstance(context).addToRequestQueue(req,"PostResult");}
请帮助