以下是我的代码，我试图获得服务器响应，如果状态等于成功我显示成功消息，如果失败显示失败但所有时间显示失败消息为什么它发生。请给我解决方案。 verify.java 我不知道它是执行条件
的真或假块public class verifyotp extends AsyncTask<String, String, String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
pdialog = new ProgressDialog(Verifyotp.this);
pdialog.setMessage("Loading....");
pdialog.setIndeterminate(false);
pdialog.setCancelable(false);
pdialog.show();
}
@Override
protected String doInBackground(String... strings) {
try {
List<NameValuePair> param = new ArrayList<NameValuePair>();
param.add(new BasicNameValuePair("edituser", Uid));
param.add(new BasicNameValuePair("editotp", abc));
JSONObject json = jpar.makeHttpRequest(URL_VERIFY_OTP, "POST", param);
String sts=json.getString(TAG_status);
Log.v(TAG,""+json.getString(TAG_status));
if(sts=="succuss")
{
Log.v(TAG,"in success block");
lflag=true;
}
else
{
lflag=false;
}
}catch(Exception e){
e.printStackTrace();
Log.v(TAG, "Exception at end :" + e.toString());
//Log.e("TAG", "Error......!RecoverIt");
} return null;
}
@Override
protected void onPostExecute(String Result) {
super.onPostExecute(Result);
if(lflag==true)
{
Toast.makeText(Verifyotp.this, "Successsss", Toast.LENGTH_SHORT).show();
}else
{
Toast.makeText(Verifyotp.this, "Faileddddd", Toast.LENGTH_SHORT).show();
}
pdialog.hide();
pdialog.dismiss();
}
}
它没有设置lflag，它总是显示失败的消息。另一个问题如下
public class JSONParser {
static InputStream is;
static JSONObject jObj;
static String json;
static JSONArray jarr;
private static final String TAG = "myAppSurun";
public static String alternateJSONString = "";
public static JSONArray alternateJSONArray = null;
// constructor
public JSONParser() {
is = null;
jObj = null;
json = "";
jarr = null;
}
// function get json from url
// by making HTTP POST or GET mehtod
public JSONObject makeHttpRequest(String url, String method,
List<NameValuePair> params) {
// Making HTTP request
try {
// check for request method
if(method.equalsIgnoreCase("POST")){
// request method is POST
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
httpPost.setEntity(new UrlEncodedFormEntity(params));
Log.v(TAG, "Param String :" + url);
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
Log.v(TAG,"To the End of IF");
}else if(method.equalsIgnoreCase("GET")){
// request method is GET
DefaultHttpClient httpClient = new DefaultHttpClient();
String paramString = URLEncodedUtils.format(params, "utf-8");
url += "?" + paramString;
Log.v(TAG,"Param String :"+url);
HttpGet httpGet = new HttpGet(url);
HttpResponse httpResponse = httpClient.execute(httpGet);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
Log.v(TAG,"To the End of ELSE");
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
json = sb.toString();
Log.v(TAG,"JS_PARSER : Server Response -"+json);
} catch (Exception e) {
Log.v(TAG,"Error in getting json string from response : A further try will be given to use json string "+e.toString());
}
// try parse the string to a JSON object/Array And String
try {
if(json != null) {
alternateJSONString = json;
jObj = new JSONObject(json);
Log.v(TAG,"JS_PARSER : JSON Object Created Successfully Use Object instance");
}
else
{
Log.v(TAG,"JS_PARSER : JSON String is blank trying one more time to parse JSON String");
}
}
catch (Exception e) {
try{
if(json != null) {
Log.v(TAG,"JS_PARSER : Object Parsing failed Trying for Array if no more logs followed by \" JS_PARSER \" use JSONParser.alternateJSONArray for JSON instance. ");
alternateJSONArray = new JSONArray(json);
}
else {
Log.v(TAG,"JS_PARSER : JSON String is blank trying one last time to parse JSON String if no more logs followed by \" JS_PARSER \" use JSONParser.alternateJSONString for JSON instance");
}
}
catch(Exception e1)
{
if(json !=null) {
Log.v(TAG, "JS_PARSER : Array Parsing also failed if no more logs followed by \" JS_PARSER \" use JSONParser.alternateJSONString for backup JSON string for results");
}
else {
Log.v(TAG, "JS_PARSER : Final try also failed Confirm server log for request error or follow following log trail"+e1);
}
}
}
// return JSON String
return jObj;
}
这是我的jsonparser文件 如果我输入了错误的otp，它将显示我的回复
1843-1904/com.example.surun.suruninfocore V/myAppSurun﹕ To the End of IF
10-01 11:19:11.207 1843-1904/com.example.surun.suruninfocore V/myAppSurun﹕ JS_PARSER : Server Response -
10-01 11:19:11.213 1843-1904/com.example.surun.suruninfocore V/myAppSurun﹕ JS_PARSER : Object Parsing failed Trying for Array if no more logs followed by " JS_PARSER " use JSONParser.alternateJSONArray for JSON instance.
10-01 11:19:11.213 1843-1904/com.example.surun.suruninfocore V/myAppSurun﹕ JS_PARSER : Array Parsing also failed if no more logs followed by " JS_PARSER " use JSONParser.alternateJSONString for backup JSON string for results
10-01 11:19:11.224 1843-1904/com.example.surun.suruninfocore W/System.err﹕ java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String org.json.JSONObject.getString(java.lang.String)' on a null object reference
10-01 11:19:11.227 1843-1904/com.example.surun.suruninfocore W/System.err﹕ at com.example.surun.suruninfocore.Verifyotp$verifyotp.doInBackground(Verifyotp.java:85)
10-01 11:19:11.227 1843-1904/com.example.surun.suruninfocore W/System.err﹕ at com.example.surun.suruninfocore.Verifyotp$verifyotp.doInBackground(Verifyotp.java:68)
答案 0 :(得分：3)
使用//Ajax to get idns sites by ruleId.
var deleteButton='<i class="glyphicon glyphicon-remove" style="font-size:20px;"></i>';
var editButton='<i class="glyphicon glyphicon-pencil" style="font-size:20px;"></i>';
$.ajax({
url : '/idns/site/getSitesByRuleId/'+rule_id,
method : 'get',
dataType : 'json',
success:function(data){
$('#siteDataTable').DataTable( {
data:data,
"destroy": true,
"processing": true,
columns: [{ data: 'siteId' },{ data: 'siteName' },{ data: 'userName' },{ data: 'channelName' },]
} );
}
});
// To edit site table record.
var table = $('#siteDataTable').DataTable();
$('#siteDataTable tbody').on( 'click', 'tr', function () {
console.log(table.row( this ).data());
} );
代替equals。请尝试这种方式。我希望它能运作
在Java中，最常见的错误之一就是使用==来 比较字符串。你必须记住，==比较对象 引用，而不是内容。
string1.equals（String target）比较两个基于的字符串 字符串中的实际字符。
==答案 1 :(得分：1)
String比较总是使用以下方式进行比较：
equals() OR equalsIgnoreCase()
对象比较总是使用以下方式进行比较：
==
在您的情况下尝试使用：
if(sts.equals("succuss")) OR if(sts.equalsIgnoreCase("succuss"))
答案 2 :(得分：1)
您正在比较字符串，因此您应该使用
if(sts.equalsIgnoreCase("succuss"))
{
lflag=true;
}
它会给出预期的结果。