使用Android消耗Restful WCF服务 [英] Consuming Restful WCF Service using Android

问题描述

我一直在尝试从Android设备连接到WCF服务。我读过很多看似没用的博客。在我的WCF上运行的一个操作是 -

I have been attempting to to connect to a WCF Service from a Android device. I have read a lot of blogs that does not seem to be useful. One of the Operations running on my WCF is -

[OperationContract]
[WebGet(UriTemplate = "write", ResponseFormat = WebMessageFormat.Json)]
string write();

这将一个实体写入数据库。当我在手机浏览器10.0.0.14/serv/UserManagement.svc/write中输入URL时，我收到相关消息并且写入数据库没有问题。当我尝试从Android应用程序中使用WCF时出现问题。



我跳过了许多不同的解决方案类型，我目前正在使用

This writes one entity to a database. When I enter the URL in my phones browser "10.0.0.14/serv/UserManagement.svc/write" I get the relevant message and it writes to the database with no problem. The problem arises when I attempt to Consume the WCF from a android application.

I have jumped between many different solution types and I am currently using

try 
{

    DefaultHttpClient httpClient = new DefaultHttpClient();
    URI uri = new URI("http://10.0.0.14/serv/UserManagement.svc/write"); 

    HttpGet httpget = new HttpGet(uri);
    httpget.setHeader("Accept", "application/json");
    httpget.setHeader("Content-type", "application/json; charset=utf-8");

    HttpResponse response = httpClient.execute(httpget);
    HttpEntity responseEntity = response.getEntity();


}
catch (Exception e) 
{
     e.printStackTrace();
}

这不起作用。我已将< uses-permission android：name =android.permission.INTERNETxmlns：android =＃unknown/> 添加到我的清单中。



在我的LogCat中有一个 NetworkOnMainThreadException 。



我该如何解决这个问题？

This does not work. I have added <uses-permission android:name="android.permission.INTERNET" xmlns:android="#unknown" /> to my manifest.

In my LogCat there is a NetworkOnMainThreadException.

How can I fix the problem?

推荐答案

从那以后你的WCF代码似乎没有错在浏览器中访问它时返回的结果。你应该深入了解Android代码。您可以尝试在 AsyncTask 中调用REST服务。



请查看以下链接了解更多详情。



http://stackoverflow.com/questions/6343166/android-os-networkonmainthreadexception

Seems to be nothing wrong in your WCF code since its returning result when you access it in browser. You should dig into you Android code. You may try by calling your REST service in AsyncTask.

Have a look at below link for more details.

http://stackoverflow.com/questions/6343166/android-os-networkonmainthreadexception

你应该使用AsyncTask

You should use AsyncTask

class ConnectToWCF extends AsyncTask<void,> {

    @Override
    protected void onPreExecute() {
        super.onPreExecute();
    }

    protected String doInBackground(Void... arg0) {
        String is = "";

        try 
        {
            DefaultHttpClient httpClient = new DefaultHttpClient();
            URI uri = new URI("http://10.0.0.14/serv/UserManagement.svc/write"); 
 
            HttpGet httpget = new HttpGet(uri);
            httpget.setHeader("Accept", "application/json");
            httpget.setHeader("Content-type", "application/json; charset=utf-8");
 
            HttpResponse response = httpClient.execute(httpget);
            HttpEntity responseEntity = response.getEntity();
 
        } 
        catch (Exception e) 
        {
            e.printStackTrace();
        }
        return is;
    }

    protected void onPostExecute(String result) {
        super.onPostExecute(result);
    }
}

并在主线程中使用它，即onCreate

and use it in your main thread i.e onCreate

new ConnectToWCF().execute();

//将响应数据读入缓冲区

char [] buffer = new char [（int）responseEntity.getContentLength（）];

InputStream流= responseEntity.getContent（）;

InputStreamReader reader = new InputStreamReader（stream）;

reader.read（buffer）;

stream.close （）;



JSONArray data = new JSONArray（new String（buffer））

// Read response data into buffer
char[] buffer = new char[(int)responseEntity.getContentLength()];
InputStream stream = responseEntity.getContent();
InputStreamReader reader = new InputStreamReader(stream);
reader.read(buffer);
stream.close();

JSONArray data = new JSONArray(new String(buffer))

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