Java 从android调用asmx HTTP POST

我正在尝试从android发布HTTP。如果我要求在LINQPAD中使用该C#代码，它会起作用

void Main()
{
    string r = String.Format(@"<s:Body><TrackMobileApp xmlns=""soap action url"" xmlns:i=""http://www.w3.org/2001/XMLSchema-instance""><device>test</device><imei>test</imei><ipAddress>127.0.0.1</ipAddress><timeStamp>2016-02-17T17:32:00.5147663+04:00</timeStamp></TrackMobileApp></s:Body>", DateTime.Now.ToString("o"));

    HttpWebRequest wr = (HttpWebRequest)HttpWebRequest.Create("URL.asmx");
    wr.ProtocolVersion = HttpVersion.Version11;
    wr.Headers.Add("SOAPAction", "soap action");
    wr.Method = "POST";
    wr.ContentType = "text/xml;charset=utf-8";
    using (StreamWriter sw = new StreamWriter(wr.GetRequestStream()))
    {
        sw.Write(r);
    } 
    HttpWebResponse rs = (HttpWebResponse)wr.GetResponse();
    if (rs.StatusCode == HttpStatusCode.OK)
    {
        XmlDocument xd = new XmlDocument();
        using (StreamReader sr = new StreamReader(rs.GetResponseStream()))
        {
            xd.LoadXml(sr.ReadToEnd());
            xd.InnerXml.Dump();
        }
    }
} 

我的方法是：

private class DownloadTask extends AsyncTask<String, Void, String> {

    @Override
    protected String doInBackground(String... params) {
        //do your request in here so that you don't interrupt the UI thread
        try {
            return downloadContent(params[0]);
        } catch (IOException e) {
            return "Unable to retrieve data. URL may be invalid.";
        }
    }

    @Override
    protected void onPostExecute(String result) {
        //Here you are done with the task
    }
}

private String downloadContent(String myurl) throws IOException {
    InputStream is = null;
    int length = 500;

    try {
        URL url = new URL(myurl);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setReadTimeout(10000 /* milliseconds */);
        conn.setConnectTimeout(15000 /* milliseconds */);
        conn.setRequestProperty("SOAPAction", "soap action");
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Content-Type", "application/xml");
        conn.setDoInput(true);
        conn.connect();
        int response = conn.getResponseCode();
        Log.d(TAG, "The response is: " + response);
        is = conn.getInputStream();

        // Convert the InputStream into a string
        String contentAsString = convertInputStreamToString(is, length);
        return contentAsString;
    } finally {
        if (is != null) {
            is.close();
        }
    }
}

public String convertInputStreamToString(InputStream stream, int length) throws IOException, UnsupportedEncodingException {
    Reader reader = null;
    reader = new InputStreamReader(stream, "UTF-8");
    char[] buffer = new char[length];
    reader.read(buffer);
    return new String(buffer);
}

私有类下载任务扩展了异步任务{
@凌驾
受保护的字符串doInBackground（字符串…参数）{
//在这里执行请求，这样就不会中断UI线程
试一试{
返回下载内容（参数[0]）；
}捕获（IOE异常）{
return“无法检索数据。URL可能无效。”；
}
}
@凌驾
受保护的void onPostExecute（字符串结果）{
//在这里你完成了任务
}
}
私有字符串下载内容（字符串myurl）引发IOException{
InputStream=null；
整数长度=500；
试一试{
URL=新URL（myurl）；
HttpURLConnection conn=（HttpURLConnection）url.openConnection（）；
conn.setReadTimeout（10000/*毫秒*/）；
conn.setConnectTimeout（15000/*毫秒*/）；
conn.setRequestProperty（“SOAPAction”、“soap action”）；
conn.setRequestMethod（“POST”）；
conn.setRequestProperty（“内容类型”、“应用程序/xml”）；
conn.setDoInput（真）；
连接（）；
int response=conn.getResponseCode（）；
Log.d（标记“响应为：”+响应）；
is=conn.getInputStream（）；
//将InputStream转换为字符串
字符串contentAsString=convertInputStreamToString（is，长度）；
返回contentAsString；
}最后{
如果（is！=null）{
is.close（）；
}
}
}
公共字符串convertInputStreamToString（InputStream，int-length）引发IOException，UnsupportedEncodingException{
Reader=null；
读卡器=新的InputStreamReader（流，“UTF-8”）；
字符[]缓冲区=新字符[长度]；
读（缓冲区）；
返回新字符串（缓冲区）；
}

您对内容类型使用了两个不同的值，这可能是个问题？@0xDEADC0DE如果我使用

text/xml；charset=utf-8

作为内容类型，那么不幸的是http 400。我还看到你正在用C#编写一个字符串作为内容，而你没有在Android上这样做。这会导致问题吗？@0xDEADC0DE该字符串是我期望从android获得的响应（我正在检索IMEI代码和ip等）。我不确定它是否会解决您的问题，但当您执行POST请求时，您可能需要添加

conn.setDoOutput（true）

您正在对内容类型使用两个不同的值，也许这是一个问题？@0xDEADC0DE，如果我使用

text/xml；charset=utf-8

作为内容类型，那么不幸的是http 400。我还看到你正在用C#编写一个字符串作为内容，而你没有在Android上这样做。这会导致问题吗？@0xDEADC0DE该字符串是我期望从android获得的响应（我正在检索IMEI代码和ip等）。我不确定它是否会解决您的问题，但在您执行POST请求时，您可能需要添加

conn.setDoOutput（true）

private class DownloadTask extends AsyncTask<String, Void, String> {

    @Override
    protected String doInBackground(String... params) {
        //do your request in here so that you don't interrupt the UI thread
        try {
            return downloadContent(params[0]);
        } catch (IOException e) {
            return "Unable to retrieve data. URL may be invalid.";
        }
    }

    @Override
    protected void onPostExecute(String result) {
        //Here you are done with the task
    }
}

private String downloadContent(String myurl) throws IOException {
    InputStream is = null;
    int length = 500;

    try {
        URL url = new URL(myurl);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setReadTimeout(10000 /* milliseconds */);
        conn.setConnectTimeout(15000 /* milliseconds */);
        conn.setRequestProperty("SOAPAction", "soap action");
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Content-Type", "application/xml");
        conn.setDoInput(true);
        conn.connect();
        int response = conn.getResponseCode();
        Log.d(TAG, "The response is: " + response);
        is = conn.getInputStream();

        // Convert the InputStream into a string
        String contentAsString = convertInputStreamToString(is, length);
        return contentAsString;
    } finally {
        if (is != null) {
            is.close();
        }
    }
}

public String convertInputStreamToString(InputStream stream, int length) throws IOException, UnsupportedEncodingException {
    Reader reader = null;
    reader = new InputStreamReader(stream, "UTF-8");
    char[] buffer = new char[length];
    reader.read(buffer);
    return new String(buffer);
}