我一直在这个URL中读取这个json文件 . 我在网上尝试了很多例子,但它无法在此URL中读取此特定的json文件
[https://203.177.52.163:1985/restgateway/services/ws_download/Book/3372/Plant/03/User/12334]. Please help me what is wrong with this. Thank you for your help.
//这是我的代码示例..
package com.hmkcode.android;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import android.app.Activity;
public class MainActivity extends Activity {
EditText etResponse;
TextView tvIsConnected;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// get reference to the views
etResponse = (EditText) findViewById(R.id.etResponse);
tvIsConnected = (TextView) findViewById(R.id.tvIsConnected);
// check if you are connected or not
if(isConnected()){
tvIsConnected.setBackgroundColor(0xFF00CC00);
tvIsConnected.setText("You are conncted");
}
else{
tvIsConnected.setText("You are NOT conncted");
}
// call AsynTask to perform network operation on separate thread
//new HttpAsyncTask().execute("http://hmkcode.appspot.com/rest/controller /get.json");
new HttpAsyncTask().execute("https://203.177.52.163:1985/restgateway/services/ws_download/Book/3372/Plant/03/User/12334");
}
public static String GET(String url){
InputStream inputStream = null;
String result = "";
try {
// create HttpClient
HttpClient httpclient = new DefaultHttpClient();
// make GET request to the given URL
HttpResponse httpResponse = httpclient.execute(new HttpGet(url));
// receive response as inputStream
inputStream = httpResponse.getEntity().getContent();
// convert inputstream to string
if(inputStream != null)
result = convertInputStreamToString(inputStream);
else
result = "Did not work!";
} catch (Exception e) {
Log.d("InputStream", e.getLocalizedMessage());
}
return result;
}
private static String convertInputStreamToString(InputStream inputStream) throws IOException{
BufferedReader bufferedReader = new BufferedReader( new InputStreamReader(inputStream));
String line = "";
String result = "";
while((line = bufferedReader.readLine()) != null)
result += line;
inputStream.close();
return result;
}
public boolean isConnected(){
ConnectivityManager connMgr = (ConnectivityManager) getSystemService(Activity.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
if (networkInfo != null && networkInfo.isConnected())
return true;
else
return false;
}
private class HttpAsyncTask extends AsyncTask {
@Override
protected String doInBackground(String... urls) {
return GET(urls[0]);
}
// onPostExecute displays the results of the AsyncTask.
@Override
protected void onPostExecute(String result) {enter code here
Toast.makeText(getBaseContext(), "Received!", Toast.LENGTH_LONG).show();
etResponse.setText(result);
}
}
}
这是我的activity_main.XML
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/tvIsConnected"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:background="#FF0000"
android:textColor="#FFF"
android:textSize="18dp"
android:layout_marginBottom="5dp"
android:text="is connected? " />
<EditText
android:id="@+id/etResponse"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:ems="10"
android:layout_marginTop="10dp"
android:inputType="textMultiLine" >\
<requestFocus />
</EditText>
</LinearLayout>
使用此URL可以使用此代码
new HttpAsyncTask().execute("http://hmkcode.appspot.com/rest/controller /get.json");
但是如果我将它改成这个网址
new HttpAsyncTask().execute("https://203.177.52.163:1985/restgateway/services/ws_download/Book/3372/Plant/03/User/12334");
大家好,我想知道这是否是服务器问题?或者这只是这段代码的错误 . 提前致谢 .
1 回答
我的猜测是你试图连接到自签名的HTTPS网站 . 这意味着您的证书不“正确”(由知名公司认证) . 因此,android可能会阻止此请求,例如“SSL peer certificate incorect”或类似内容 .
如果我的猜测是正确的,我会将你重定向到这个问题:Self-signed certificate and loopj for Android和接受的答案对我来说似乎非常正确 .
试试看,告诉我它是否有帮助!