POST data to Web

[Alehap]

Please help me to post data to web.
I cannot configure data for posting.

.data(????????) <~~ can you example something for me, thanks too much

$.ajax(new AjaxOptions().url("http://www.example.com")
.type("post")
.dataType("text")
.data(????????)
.context(this)
.success(new Function() {
@OverRide
public void invoke($ droidQuery, Object... params) {
JSONObject json = (JSONObject) params[0];
//handle json response. Also see $.map(JSONObject) for parsing
}
})
.error(new Function() {
@OverRide
public void invoke($ droidQuery, Object... params) {
AjaxError e = (AjaxError) params[0];
Log.e("$", "Error: " + e.status + ": " + e.error);
}
}));

[phil-brown]

@Alehap there is an example of GET on the main page, and here's a POST example on StackOverflow.

To answer your questions directly, .data() expects a JSON String. For example:

.data("{\"name\":\"Phil\", \"career\", \"mobile developer\"}")

[Alehap]

Thank you too much.
I used this function:

$.ajax(new AjaxOptions().url("http://group.vnbuzz.net/masoi_ws/server.php")
.type("POST")
.data("{"act":"login"}")
.dataType("json")
.context(this)
.success(new Function() {
@OverRide
public void invoke($ droidQuery, Object... params) {
droidQuery.alert((String) params[0]);
}
}).error(new Function() {
@OverRide
public void invoke($ droidQuery, Object... params) {
int statusCode = (Integer) params[1];
String error = (String) params[2];
Log.e("Ajax", statusCode + " " + error);
}
}));

And the success function has ever called.
But the result of error function is "200 OK" !?
Please help me to solve this problem, thanks too much :)

[Alehap]

At web, I see this function do not post any data :(

04/04/2014 15:48:32
array(0) {
}

---

04/04/2014 15:49:40
array(0) {
}

---

04/04/2014 15:51:13
array(0) {
}

---

04/04/2014 15:54:49
array(0) {
}

---

[phil-brown]

@Alehap Looking at the code, this occurs when there has been a problem parsing the returned data. I will change the status code and message to reflect this.

To determine what exactly the problem is, add this method call to your Ajax chain: .debug(true). This will allow stack traces from errors to print to logcat. What error(s) do you see here?

[Alehap]

Where should I add .debug(true)??

If I add in ajaxoptions, I've got error@@
$.ajax(new AjaxOptions().url("http://group.vnbuzz.net/masoi_ws/server.php")
.type("POST")
.dataType("json")
.data("{"name":"Phil", "career":"mobile developer"}")
.context(this)
.debug(true)
.success(new Function() {
@OverRide
public void invoke($ droidQuery, Object... params) {
droidQuery.alert((String) params[0]);
}
}).error(new Function() {
@OverRide
public void invoke($ droidQuery, Object... params) {
int statusCode = (Integer) params[1];
String error = (String) params[2];
Log.e("Ajax", statusCode + " " + error);
}
}));

P.s: I'm sure the error is $.ajax not send any post data, because I've var_dump($_POST) in PHP code to see details of POST data, and I've got nothing@@

Thanks for your support me too much

[phil-brown]

Add it anywhere, for example:

$.ajax(new AjaxOptions().url("http://group.vnbuzz.net/masoi_ws/server.php")
                        .type("POST")
                        .data("{\"act\":\"login\"}")
                        .dataType("json")
                        .success(new Function() {                                            
                            @Override
                             public void invoke($ droidQuery, Object... params) {
                                 droidQuery.alert((String) params[0]);
                            }
                        }).error(new Function() {
                            @Override
                             public void invoke($ droidQuery, Object... params) {
                                 Log.e("Ajax", params[0].toString());
                            }
                        }).debug(true));//add here

This will help see if we are having trouble parsing the returned data. This may be the case if, for example, the request returns a 404 Not Found String instead of JSON.

Also, I have used this library in several Android apps, and have not had trouble with posting data. I wouldn't think any newer changes would cause problems, but you could try using version an older version (such as Optimized for loops by changing for-each loops to use an index i.). If this works, please let me know and I will fix the current build ASAP.

[Alehap]

I cannot add this :(

[phil-brown]

What version of droidQuery are you using? the debug method has been available since Aug 02, 2013 (commit b9e27b6694ed34cc528fcd3237e704aa4f340335).

[Alehap]

I'm using version "phil-brown-droidQuery-1.1.0-2-g559e2ea.tar.gz" !?

[Alehap]

After I change new droiquery.jar, I've got this :((

[phil-brown]

@Alehap use droidQuery-1.1.0-source.jar. This is packaged with its dependencies - which may be the problem.

[Alehap]

nothing changes :'(

[phil-brown]

Ok - now the debug flag is working. The error is as I suspected - a problem with parsing the returned JSON. What happens if you change the dataType to "text": .dataType("text")? This should show what is being returned in your success function.

[Alehap]

if I change it to "text", it show nothing (empty string).
And when I use var_dump($_POST) to see whatever posting to web, and I see this ajax do not post any data@@

[phil-brown]

Hmmm.. There is obviously some disconnect between the client and the server. Some things you can try:

• Does droidQuery-1.0.7 work?
• Are you sure the server code is working? Do GET requests or other actions work?
• Is .data("{\"act\":\"login\"}") written just like this - or do you generate the String?
• Does the server expect JSON to be formatted differently? Some servers will work with JSON formatted like "{act:'login'}".

Also - I assumed that since both the android client and the server are responding to some events, that the INTERNET permission is set in the Manifest.

[Alehap]

It doesn't work too :(
I'm sure the server code is working correctly. Because I'm using a web client to connect to this web service. Now I want to make a mobile app@@
I'm not need a method post json to server, I'm need only a simple post method such as when you login at any website@@

[phil-brown]

@Alehap In one of my published apps, which has a PHP server, I use this method:

public static AjaxOptions login(String emailAddress, String password) {
    return new AjaxOptions().url(Utilities.format("%s/%s/%s/login", baseURL, deviceType, version))
                            .type("POST")
                            .data(Utilities.format("{\"email\": \"%s\", \"password\": \"%s\" }", emailAddress, password));
}

I then make a call to this method, add the success and error callbacks, and invoke the request:

$.ajax(login(email, password).success(new Function() {
    public void invoke($ d, Object... args) {
        Log.i("Ajax", "Success: " + args[0].toString());
    }
}).error(new Function() {
    public void invoke($ d, Object... args) {
        Log.i("Ajax", args[0].toString());
    }
}));

And I have the following Manifest Permissions (only INTERNET should be needed):

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

This works well. You can see the results in this app.

[Alehap]

hjc, in Manifest I've add it already :(

when I use method get, I can get data normally, but I cannot get data when post :(
this $.ajax cannot post data to my web service :(

[phil-brown]

I would revisit the web service. Maybe post a question on StackOverflow? If there is a problem with either of our code, someone with knowledge of both Android and backend technologies should be able to help. droidQuery is already in the StackOverflow tag database.

[Alehap]

oh thank you too much :)

[phil-brown]

For sure. Please let me know how you solve the issue - then I can mark this as closed. Good luck!

[phil-brown]

@Alehap were you able to resolve this issue?

[nikolai94]

Hey i had the same problem i just need to set .contentType("application/json"), then it worked fine :)