android volley post 参数,android – 使用volley post传递参数 -凯发k8官方网

我能够使用postman和这些参数调用http端点：

{

"name":"val",

"subject":"test"

}

但是我无法通过android对volley做同样的事情：这里尝试使用jsonrequest：

hashmap params2 = new hashmap();

params.put("name", "val");

params.put("subject", "test subject");

jsonobjectrequest jsobjrequest = new jsonobjectrequest

(request.method.post, constants.cloud_url, new jsonobject(params2), new response.listener() {

@override

public void onresponse(jsonobject response) {

mview.showmessage("response: " response.tostring());

}

}, new response.errorlistener() {

@override

public void onerrorresponse(volleyerror error) {

// todo auto-generated method stub

mview.showmessage(error.getmessage());

}

});

// access the requestqueue through your singleton class.

volleysingleton.getinstance(mcontext).addtorequestqueue(jsobjrequest);

这里是尝试stringrequest

private void postmessage(context context, final string name, final string subject ){

requestqueue queue = volley.newrequestqueue(context);

stringrequest sr = new stringrequest(request.method.post, constants.cloud_url, new response.listener() {

@override

public void onresponse(string response) {

mview.showmessage(response);

}

}, new response.errorlistener() {

@override

public void onerrorresponse(volleyerror error) {

}

}){

@override

protected map getparams(){

map params = new hashmap();

params.put("name", name);

params.put("subject", subject);

return params;

}

@override

public map getheaders() throws authfailureerror {

map params = new hashmap();

params.put("content-type","application/x-www-form-urlencoded");

return params;

}

};

queue.add(sr);

}

当我使用jsonrequest时,调用post但没有传递参数,当我使用stringrequest时,我得到下面的错误？如何将json数据传递给volley调用？

e/volley: [13053] basicnetwork.performrequest: unexpected response code 400 for

这是处理请求的服务器代码

public static async task run(httprequestmessage req, tracewriter log)

{

var hellorequest = await req.content.readasasync();

var name = hellorequest?.name ?? "world";

var responsemessage = $"hello {persontogreet}!";

log.info($"message: {responsemessage}");

return req.createresponse(httpstatuscode.ok, $"all went well.");

}

public class hellorequest

{

public string name { get; set; }

public string subject { get; set; }

}

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