我正在尝试将我的android项目连接到PHP页面但是它无法正常运行什么是错误我不知道为什么它不适用于我我放了互联网权限
这是检查http连接的站点代码：
public class site {
static String response = null;
public final static int getrequest =1;
public final static int postrequest=2;
public site(){}
public String histosite (String url, int requestmothod){
return this.histosite(url,requestmothod);
}
public String histosite(String urlsddress, int requestmothod,HashMap<String,String> params){
URL url;
String response= "";
try {
url= new URL(urlsddress);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setReadTimeout(15001);
conn.setConnectTimeout(15001);
conn.setDoInput(true);
conn.setDoOutput(true);
if (requestmothod == postrequest){
conn.setRequestMethod("POST");
} else if(requestmothod == getrequest){
conn.setRequestMethod("GETRequest");
}
if(params != null){
OutputStream ostream = conn.getOutputStream();
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(ostream,"UTF-8"));
StringBuilder requestresult = new StringBuilder();
boolean first = true;
for (Map.Entry<String, String> entry: params.entrySet()){
if (first)
first=false;
else
requestresult.append("&");
requestresult.append(URLEncoder.encode(entry.getKey(),"UTF-8"));
requestresult.append("=");
requestresult.append(URLEncoder.encode(entry.getValue(),"UTF-8"));
}
writer.write(requestresult.toString());
writer.flush();
writer.close();
ostream.close();
}
int reqresponsecode= conn.getResponseCode();
if(reqresponsecode == HttpURLConnection.HTTP_OK){
String line;
BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
while ((line = br.readLine())!= null){
response += line;
}
} else {
response = "";
}
} catch (Exception e) {
e.printStackTrace();
}
return response;
}
}
这是检索和呈现数据的地方：
public class Historical_Sites extends ListActivity {
private static final String url= "http://tourin.esy.es/php/historical.php";
private static final String TAG_POSTS="posts";
private static final String TAG_SITE_NAME = "Site_Name";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.ex);
new getsite().execute();
}
private class getsite extends AsyncTask<Void,Void,Void>{
ArrayList<HashMap<String,String>> siteslist;
ProgressDialog prodialog;
@Override
protected void onPreExecute() {
super.onPreExecute();
prodialog= new ProgressDialog(Historical_Sites.this);
prodialog.setMessage("Please waite");
prodialog.setCancelable(false);
prodialog.show();
}
@Override
protected Void doInBackground(Void... params) {
site Site = new site();
String jsonstr = Site.histosite(url,site.getrequest);
Log.d("Response : ", ">" + jsonstr);
siteslist= ParseJSON(jsonstr);
return null;
}
@Override
protected void onPostExecute(Void requestres) {
super.onPostExecute(requestres);
if(prodialog.isShowing())
prodialog.dismiss();
ListAdapter adapter = new SimpleAdapter(Historical_Sites.this,siteslist,R.layout.list,
new String[]{TAG_SITE_NAME},new int[]{R.id.lis});
setListAdapter(adapter);
}
private ArrayList<HashMap<String,String>> ParseJSON( String json){
if(json != null){
try {
ArrayList<HashMap<String,String>> SiteList = new ArrayList<HashMap<String,String>>();
JSONObject Jsonobj= new JSONObject(json);
JSONArray HistoricalSites = Jsonobj.getJSONArray(TAG_POSTS);
for(int i=0 ; i<HistoricalSites.length();i++){
JSONObject c = HistoricalSites.getJSONObject(i);
String sitename = c.getString(TAG_SITE_NAME);
HashMap<String,String>HistoricalSite = new HashMap<String,String>();
HistoricalSite.put(TAG_SITE_NAME,sitename);
siteslist.add(HistoricalSite);
}
} catch (JSONException e) {
e.printStackTrace();
}
}else{
Log.e("Service Handeller","No data recieved ");
}
return null;
}
}
}
这是json代码：
{"success":1,"message":"Post Available!","posts":[{"Site_Name":"Bahrain National Museum"},{"Site_Name":"Qalat al Bahrain site and museum"},{"Site_Name":"Boats Trips to Bu Maher Fort"},{"Site_Name":"Old Houses of Muharraq"},{"Site_Name":"Bait al Quran"},{"Site_Name":"Al Khamis Mosque"},{"Site_Name":"Arad Fort"},{"Site_Name":"Sheikh Salman Bin Ahmed Al Fateh Fort"},{"Site_Name":"Siyadi House"},{"Site_Name":"Siyadi Mosque"},{"Site_Name":"Al Jasra House"},{"Site_Name":"Al Jasra Handicrafts Centre"},{"Site_Name":"Al Fateh Mosque"},{"Site_Name":"Saar Settlement"},{"Site_Name":"Barbar Temples"}]}
答案 0 :(得分：0)
使用此代码
String getWebServiceTask(String requestURL,JSONObject postDataParams,String PostType)
{
URL url;
String response = "";
int responseCode = 0;
JSONObject responseObject = null;
try {
url = new URL(requestURL);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setReadTimeout(1500000);
conn.setConnectTimeout(1500000);
conn.setRequestProperty("Content-Type", "application/json");
conn.setRequestProperty("Accept", "application/json");
conn.setRequestProperty("Content-Language", "en-US,en;q=0.8");
conn.setRequestMethod(PostType);
conn.setDoInput(true);
conn.setDoOutput(true);
conn.connect();
if(postDataParams != null){
OutputStream os = conn.getOutputStream();
BufferedWriter writer = new BufferedWriter(
new OutputStreamWriter(os, "UTF-8"));
writer.write(postDataParams.toString());
writer.flush();
writer.close();
os.close();
}
responseCode=conn.getResponseCode();
if (responseCode == HttpsURLConnection.HTTP_OK) {
String line;
BufferedReader br=new BufferedReader(new InputStreamReader(conn.getInputStream()));
while ((line=br.readLine()) != null) {
response+=line;
}
}
else {
response="";
}
} catch (Exception e) {
e.printStackTrace();
}
try {
responseObject=new JSONObject();
responseObject.put(AppConstants.API_RESPONSE_CODE, responseCode);
responseObject.put(AppConstants.API_RESPONSE, response);
} catch (Exception e) {
// TODO: handle exception
}
return responseObject.toString();
}