Volley 不为标准 POST 请求调用 getParams() [英] Volley not calling getParams() for standard POST request
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问题描述
我正在尝试使用 Android 中的 Volley 将一些参数发布到我的 rails API.这是代码:
I am trying to post some parameters to my rails API using Volley in Android. This is the code:
我尝试了两个日志语句,一个在 getParams()
中,另一个在 getHeaders()
中.getHeaders()
中的一个被记录,而另一个没有.为什么 volley 会忽略 getParams()
?
I tried with two log statements, one in getParams()
and another in getHeaders()
. The one in getHeaders()
is logged while the other one is not. Why is volley ignoring getParams()
?
{
//full_name,email,password are private variables defined for this class
String url = "http://10.0.2.2:3000/users/sign_up.json" ;
JsonObjectRequest jsonObjReq = new JsonObjectRequest(Request.Method.POST,
url, null,
new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
Log.d(TAG, response.toString());
pDialog.hide();
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "Error: " + error.getMessage());
pDialog.hide();
}
}) {
@Override
public Map<String, String> getParams() {
Map<String, String> params = new HashMap<String, String>();
//This does not appear in the log
Log.d(TAG,"Does it assign params?") ;
params.put("name", full_name.getText().toString());
params.put("email",email.getText().toString());
params.put("password", password.getText().toString());
return params;
}
@Override
public Map<String, String> getHeaders() throws AuthFailureError {
//This appears in the log
Log.d(TAG,"Does it assign headers?") ;
HashMap<String, String> headers = new HashMap<String, String>();
headers.put("Content-Type", "application/json; charset=utf-8");
return headers;
}
};
// Adding request to request queue
VHelper.getInstance().addToRequestQueue(jsonObjReq, tag_json_obj);
}
推荐答案
使用 StringRequest 代替 JsonObjectRequest
Using StringRequest in place of JsonObjectRequest
StringRequest sr = new StringRequest(Request.Method.POST, url , new Response.Listener<String>() {
@Override
public void onResponse(String response) {
Log.d(TAG, response.toString());
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "Error: " + error.getMessage());
Log.d(TAG, ""+error.getMessage()+","+error.toString());
}
}){
@Override
protected Map<String,String> getParams(){
Map<String, String> params = new HashMap<String, String>();
params.put("id", "28");
params.put("value", "1");
return params;
}
@Override
public Map<String, String> getHeaders() throws AuthFailureError {
Map<String,String> headers = new HashMap<String, String>();
headers.put("Content-Type","application/x-www-form-urlencoded");
headers.put("abc", "value");
return headers;
}
};
AppController.getInstance().addToRequestQueue(sr);
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