[英]How to fix "Volley: [15771] BasicNetwork.performRequest: Unexpected response code 404 in android?
[英]Android Volley: BasicNetwork.performRequest: Unexpected response code 404
我想從數據庫中獲取用戶的信息並顯示它,但我不斷收到此錯誤:
BasicNetwork.performRequest:意外的響應代碼404
這是我的javacode:
裝載方式:
public void loadUserProfile() {
Response.Listener<String> responseListener = new Response.Listener<String>() {
@Override
public void onResponse(String response) {
try {
JSONObject jsonResponse = new JSONObject(response);
idTV.setText(jsonResponse.getString("_id"));
nameTV.setText(jsonResponse.getString("name"));
firstNameTV.setText(jsonResponse.getString("firstName"));
emailTV.setText(jsonResponse.getString("email"));
sexTV.setText(jsonResponse.getString("sex"));
yearTV.setText(jsonResponse.getString("year"));
cursusTV.setText(jsonResponse.getString("cursus"));
} catch (JSONException e) {
onLoadProfileFail();
}
}
};
ProfileRequest profileRequest = new ProfileRequest(user_id, responseListener);
RequestQueue queue = Volley.newRequestQueue(ProfileActivity.this);
queue.add(profileRequest);
}
請求類
class ProfileRequest extends StringRequest {
private static final String USER_PROFILE_REQUEST = "http://[ipaddress]:8080/users/:id";
private Map<String, String> params;
public ProfileRequest(String id, Response.Listener<String> listener) {
super(Method.POST, USER_PROFILE_REQUEST, listener, null);
params = new HashMap<>();
params.put("id", id);
}
@Override
public Map<String, String> getParams() {
return params;
}
}
app.js
router.get('/users/:id', function(req, res) {
User.find({ _id: "ie00847" }, function(err, user) {
if (err)
res.send(err);
res.json(user);
});
});
自從您使用不可用的方法(POST)訪問路由時出現404錯誤,因為在app.js
文件中您為get請求而不是POST請求定義了一個函數,因此您需要更新Android代碼到GET請求。 像下面的東西,
class ProfileRequest extends StringRequest {
private static final String USER_PROFILE_REQUEST = "http://[ipaddress]:8080/users";
private Map<String, String> params;
public ProfileRequest(String id, Response.Listener<String> listener) {
super(Method.GET, USER_PROFILE_REQUEST + "/" + id, listener, null);
}
}
另請注意,不再需要覆蓋getParams()
方法,因為您不再發送POST請求。 此外,除了通過對URL中的值進行硬編碼而不是通過Map
對象進行硬編碼之外,您無法向GET請求添加參數。
希望這可以幫助 :)
您可以使用此代碼解決它
public void onErrorResponse(VolleyError error) {
NetworkResponse response = error.networkResponse;
if (response != null && response.statusCode == 404) {
try {
String res = new String(response.data,
HttpHeaderParser.parseCharset(response.headers, "utf-8"));
// Now you can use any deserializer to make sense of data
JSONObject obj = new JSONObject(res);
//use this json as you want
} catch (UnsupportedEncodingException e1) {
// Couldn't properly decode data to string
e1.printStackTrace();
} catch (JSONException e2) {
// returned data is not JSONObject?
e2.printStackTrace();
}
}
}
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