Question

我将我的Android应用程序与webservice .asmx连接... 我收到一个错误，如IOException没有这样的文件或目录。我在下面给出了我的代码..我正在获取toast消息“请稍后再试”，所以一般例外正在发生。

webserviceCallButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            new login().execute();
        }
    });
}

class login extends AsyncTask<Void, Void, Void> {

    private final ProgressDialog dialog = new ProgressDialog(Sample1_Page.this);

    @Override
    protected void onPreExecute() {
        this.dialog.setMessage("Loading data");
        this.dialog.show();
    }

    @Override
    protected Void doInBackground(Void... unused) {
        final String NAMESPACE = "https://xxx.xxxx.com/";
        final String URL = "https://xxx.xxxx.xxx.com/appservice/d_service.asmx";
        final String SOAP_ACTION = "https://xxxx.xxx.com/mLo";
        final String METHOD_NAME = "mLo";

        SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);

        request.addProperty("userid", userid);
        request.addProperty("password", password);


        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
        envelope.dotNet = true;

        envelope.setOutputSoapObject(request);
        HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
        androidHttpTransport.debug = true;

        try {
            androidHttpTransport.call(SOAP_ACTION, envelope);
            SoapPrimitive response = (SoapPrimitive) envelope.getResponse();

            String responseJSON=response.toString();
            JSONArray jarray =new JSONArray(responseJSON);

            Name=jarray.getJSONObject(0).getString(TAG_NAME);
            Id=jarray.getJSONObject(0).getString(TAG_ID);

            System.out.println(request);
            System.out.println(responseJSON);
        }
        catch(SocketTimeoutException e){
            timeoutexcep=true;
            e.printStackTrace();
        }
        catch(UnknownHostException e){
            httpexcep=true;
            e.printStackTrace();
        }
        catch (Exception e) {
            genexcep=true;
            e.printStackTrace();
        }

        return null;
    }

    @Override
    protected void onPostExecute(Void result) {
        if (this.dialog.isShowing()) {
            this.dialog.dismiss();
        }
        if(timeoutexcep){
            Toast.makeText(Sample1_Page.this, "Unable to connect to server, Please try again later",Toast.LENGTH_LONG).show();
        }
        else if(httpexcep){
            Toast.makeText(Sample1_Page.this, "Please check your Internet connection",Toast.LENGTH_LONG).show();
        }
        else if(genexcep){
            Toast.makeText(Sample1_Page.this, "Please try later",Toast.LENGTH_LONG).show();        
        }
        else{
            tableview();
        }

        timeoutexcep=false;
        httpexcep=false;
        genexcep=false;
    }    

    public void tableview(){
        try{
            TextView webserviceResponse = (TextView) findViewById(R.id.textView1);
            webserviceResponse.setText(Name);
        }
        catch(Exception e){
        }
    }
}

logcat的

Java.io.IOException: Errror running exec(). Command: [su] Working Directory: null Environment : null
at java.lang.ProcessManager. exec(ProcessManager.java.211)
at java.lang.Runtime.exec(Runtime.java : 168)
at java lang.Runtime. exec(Runtime.java : 241)
at java.lang.Runtime.exec (Runtime.java:248)
at android.os.AsyncTask&2.call(AsyncTask.java:287)
at java.util.concurrent.futureTask$Sync.innerRun(FutureTask.java:305
caused by: java.io.IOExceptio: No such file or directory

Answer 1

你能告诉我你的明显权限吗？

您必须拥有此权限。如果没有，那就添加它。

android.permission.WRITE_EXTERNAL_STORAGE

还要检查您的网络服务协议，是https还是http？尝试使用服务器的IP地址。它可能对你有所帮助。

Android IO异常 - 没有这样的文件或目录

1 个答案: