包org.apache.http.client不存在 [英] package org.apache.http.client does not exist
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问题描述
我试图检查登录凭据，但我再次遇到这些错误，并再次，我已经试过了一切。我是新到Android
任何形式的帮助将是AP preciated。如果有实现相同的其他好办法，想知道如何暗示
错误
错误：（19 30）错误：包org.apache.http.client不存在
错误：（15，23）错误：包org.apache.http不存在
错误：（16，23）错误：包org.apache.http不存在
错误：（17 23）错误：包org.apache.http不存在
错误：（18 30）错误：包org.apache.http.client不存在
错误：（20，37）错误：包org.apache.http.client.entity不存在
错误：（21 38）错误：包org.apache.http.client.methods不存在
错误：（22 35）错误：包org.apache.http.impl.client不存在
错误：（23 31）错误：包org.apache.http.message不存在
错误：（79，22）错误：无法找到符号类的NameValuePair
错误：（85，49）错误：无法找到符号类DefaultHttpClient
错误：（86，21）错误：无法找到符号类HttpPost
错误：（86，45）错误：无法找到符号类HttpPost
错误：（88 44）错误：无法找到符号类UrlEn codedFormEntity
错误：（90，21）错误：无法找到符号类的Htt presponse
错误：（92 21）错误：无法找到符号类HttpEntity
错误：（105，26）错误：无法找到符号类ClientProtocolException
错误：执行失败的任务：应用程序：compileDebugJavaWithJavac。
＆GT;编译失败;详情请参见编译器错误输出。
错误：（85，21）错误：无法找到符号类的HttpClient
错误：（81 40）错误：无法找到符号类BasicNameValuePair
错误：（80，40）错误：无法找到符号类BasicNameValuePair
错误：（79，68）错误：无法找到符号类的NameValuePair
MainActivity.java
包com.tarun.proxy_maar;进口android.app.Dialog;
进口android.app.ProgressDialog;
进口android.content.Intent;
进口android.os.AsyncTask;
进口android.os.Bundle;
进口android.support.v7.app.AppCompatActivity;
进口android.view.Menu;
进口android.view.MenuItem;
进口android.view.View;
进口android.widget.EditText;
进口android.widget.Toast;进口org.apache.http.HttpEntity;
进口org.apache.http.Htt presponse;
进口org.apache.http.NameValuePair;
进口org.apache.http.client.ClientProtocolException;
进口org.apache.http.client.HttpClient;
进口org.apache.http.client.entity.UrlEn codedFormEntity;
进口org.apache.http.client.methods.HttpPost;
进口org.apache.http.impl.client.DefaultHttpClient;
进口org.apache.http.message.BasicNameValuePair;进口java.io.BufferedReader中;
进口java.io.IOException异常;
进口的java.io.InputStream;
进口java.io.InputStreamReader中;
进口java.io.UnsupportedEncodingException;
进口的java.util.ArrayList;
进口的java.util.List;
公共类MainActivity扩展AppCompatActivity { 私人的EditText editTextUserName;
私人的EditText editTextPassword; 公共静态最后弦乐USER_NAME =USERNAME; 字符串用户名;
字符串密码; @覆盖
保护无效的onCreate（捆绑savedInstanceState）{
super.onCreate（savedInstanceState）;
的setContentView（R.layout.activity_main）; editTextUserName =（EditText上）findViewById（R.id.editTextUserName）;
editTextPassword =（EditText上）findViewById（R.id.editTextPassword）;
} 公共无效invokeLogin（查看视图）{
。用户名= editTextUserName.getText（）的toString（）;
。密码= editTextPassword.getText（）的toString（）; 登录（用户名，密码）; } 私人无效登录（最后弦乐用户名，字符串密码）{ 类LoginAsync扩展的AsyncTask＆LT;弦乐，太虚，字符串＆GT; { 私人对话loadingDialog; @覆盖
在preExecute保护无效（）{
super.on preExecute（）;
loadingDialog = ProgressDialog.show（MainActivity.this，请稍等，载入中...）;
} @覆盖
保护字符串doInBackground（字符串... PARAMS）{
字符串的uname =参数[0];
字符串传递=参数[1]; InputStream为= NULL;
清单＆LT;＆的NameValuePair GT; namevaluepairs中=新的ArrayList＆LT;＆的NameValuePair GT;（）;
nameValuePairs.add（新BasicNameValuePair（用户名的uname））;
nameValuePairs.add（新BasicNameValuePair（密码，PASS））;
字符串结果= NULL; 尝试{
HttpClient的HttpClient的=新DefaultHttpClient（）;
HttpPost httpPost =新HttpPost（
http://shaadi.web44.net/hello.php）;
httpPost.setEntity（新UrlEn codedFormEntity（namevaluepairs中））; HTT presponse响应= httpClient.execute（httpPost）; HttpEntity实体= response.getEntity（）; 是= entity.getContent（）; 读者的BufferedReader =新的BufferedReader（新的InputStreamReader（是，UTF-8），8）;
StringBuilder的SB =新的StringBuilder（）; 串线= NULL;
而（（行= reader.readLine（））！= NULL）
{
sb.append（行+\\ n）;
}
结果= sb.toString（）;
}赶上（ClientProtocolException E）{
e.printStackTrace（）;
}赶上（UnsupportedEncodingException五）{
e.printStackTrace（）;
}赶上（IOException异常五）{
e.printStackTrace（）;
}
返回结果;
} @覆盖
保护无效onPostExecute（字符串结果）{
字符串s = result.trim（）;
loadingDialog.dismiss（）;
如果（s.equalsIgnoreCase（成功））{
意向意图=新意图（MainActivity.this，UserProfile.class）;
intent.putExtra（USER_NAME，用户名）;
完（）;
startActivity（意向）;
}其他{
Toast.makeText（getApplicationContext（），无效的用户名或密码，Toast.LENGTH_LONG）.show（）;
}
}
} LoginAsync LA =新LoginAsync（）;
la.execute（用户名，密码）; }
@覆盖
公共布尔onCreateOptionsMenu（菜单菜单）{
//充气菜单;如果是present这增加了项目操作栏。
。getMenuInflater（）膨胀（R.menu.menu_main，菜单）;
返回true;
} @覆盖
公共布尔onOptionsItemSelected（菜单项项）{
//处理动作栏项目点击这里。操作栏会
//自动处理上点击主页/向上按钮，只要
//你在AndroidManifest.xml中指定一个父活动。
INT ID = item.getItemId（）; // noinspection SimplifiableIfStatement
如果（ID == R.id.action_settings）{
返回true;
} 返回super.onOptionsItemSelected（项目）;
}
}
解决方案
这是添加到您的build.gradle：
安卓{
useLibraryorg.apache.http.legacy
}
或者使用 HttpURLConnection类类代替。
I am trying to check log in credentials , But I am getting these errors again and again , I have tried everything. I am new to android Any kind of help will be appreciated. If there is other good way to implement same , want to know how to imply
Error
Error:(19, 30) error: package org.apache.http.client does not exist
Error:(15, 23) error: package org.apache.http does not exist
Error:(16, 23) error: package org.apache.http does not exist
Error:(17, 23) error: package org.apache.http does not exist
Error:(18, 30) error: package org.apache.http.client does not exist
Error:(20, 37) error: package org.apache.http.client.entity does not exist
Error:(21, 38) error: package org.apache.http.client.methods does not exist
Error:(22, 35) error: package org.apache.http.impl.client does not exist
Error:(23, 31) error: package org.apache.http.message does not exist
Error:(79, 22) error: cannot find symbol class NameValuePair
Error:(85, 49) error: cannot find symbol class DefaultHttpClient
Error:(86, 21) error: cannot find symbol class HttpPost
Error:(86, 45) error: cannot find symbol class HttpPost
Error:(88, 44) error: cannot find symbol class UrlEncodedFormEntity
Error:(90, 21) error: cannot find symbol class HttpResponse
Error:(92, 21) error: cannot find symbol class HttpEntity
Error:(105, 26) error: cannot find symbol class ClientProtocolException
Error:Execution failed for task ':app:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.
Error:(85, 21) error: cannot find symbol class HttpClient
Error:(81, 40) error: cannot find symbol class BasicNameValuePair
Error:(80, 40) error: cannot find symbol class BasicNameValuePair
Error:(79, 68) error: cannot find symbol class NameValuePair
MainActivity.java
package com.tarun.proxy_maar;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
private EditText editTextUserName;
private EditText editTextPassword;
public static final String USER_NAME = "USERNAME";
String username;
String password;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
editTextUserName = (EditText) findViewById(R.id.editTextUserName);
editTextPassword = (EditText) findViewById(R.id.editTextPassword);
}
public void invokeLogin(View view){
username = editTextUserName.getText().toString();
password = editTextPassword.getText().toString();
login(username,password);
}
private void login(final String username, String password) {
class LoginAsync extends AsyncTask<String, Void, String>{
private Dialog loadingDialog;
@Override
protected void onPreExecute() {
super.onPreExecute();
loadingDialog = ProgressDialog.show(MainActivity.this, "Please wait", "Loading...");
}
@Override
protected String doInBackground(String... params) {
String uname = params[0];
String pass = params[1];
InputStream is = null;
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("username", uname));
nameValuePairs.add(new BasicNameValuePair("password", pass));
String result = null;
try{
HttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(
"http://shaadi.web44.net/hello.php");
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpClient.execute(httpPost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(is, "UTF-8"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null)
{
sb.append(line + "\n");
}
result = sb.toString();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return result;
}
@Override
protected void onPostExecute(String result){
String s = result.trim();
loadingDialog.dismiss();
if(s.equalsIgnoreCase("success")){
Intent intent = new Intent(MainActivity.this, UserProfile.class);
intent.putExtra(USER_NAME, username);
finish();
startActivity(intent);
}else {
Toast.makeText(getApplicationContext(), "Invalid User Name or Password", Toast.LENGTH_LONG).show();
}
}
}
LoginAsync la = new LoginAsync();
la.execute(username, password);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
解决方案
Add that to your build.gradle:
android {
useLibrary 'org.apache.http.legacy'
}
Or you use the HttpURLConnection class instead.
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