以下是我的Android和PHP代码。如果密码是普通字符串形式，我能够成功比较密码和登录。但是当我以加密格式输入密码时，我无法比较密码值。因此无法成功登录。
SignUpActivity.Java
package com.kezinking.nupur.kezinking;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
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.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import static android.R.attr.id;
/**
* Created by Nupur on 8/2/2016.
*/
public class SignupActivity extends AppCompatActivity {
private static final String TAG ="" ;
TextView link_login;
Button btn_signup;
EditText input_username;
EditText input_email;
EditText input_password;
String username;
String email;
String password;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_signup);
link_login = (TextView) findViewById(R.id.link_login);
btn_signup = (Button) findViewById(R.id.btn_signup);
input_username=(EditText) findViewById(R.id.input_username);
input_email=(EditText) findViewById(R.id.input_email);
input_password=(EditText) findViewById(R.id.input_password);
link_login.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(SignupActivity.this, LoginActivity.class);
startActivity(intent);
SignupActivity.this.getIntent();
}
});
btn_signup.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
username = input_username.getText().toString();
email= input_email.getText().toString();
password = input_password.getText().toString();
SignUp();
}
});
}
public void SignUp() {
if (!validate()) {
onSignupFailed();
return;
}else{
insert(username,email,password);
}
}
public void insert(final String username, final String email,final String password){
class SendPostReqAsynTask extends AsyncTask<String,Void,String> {
@Override
protected String doInBackground(String... params) {
String paramUsername=params[0];
String paramPassword=params[1];
//String username = etUsername.getText().toString();
//String password = etPassword.getText().toString();
List<NameValuePair> nameValuePairs= new ArrayList<>();
nameValuePairs.add(new BasicNameValuePair("username",username));
nameValuePairs.add(new BasicNameValuePair("email",email));
nameValuePairs.add(new BasicNameValuePair("password",password));
try{
HttpClient httpClient = new DefaultHttpClient();
// HttpGet request = new HttpGet("http://www.example.com");
HttpPost httpPost = new HttpPost("http://kezinking.com/SignUpAndroid");
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response= httpClient.execute(httpPost);
HttpEntity entity= response.getEntity();
int i =response.getStatusLine().getStatusCode();
System.out.println(i);
onSignupSuccess();
}catch(ClientProtocolException e){
}catch (IOException e){
}
return "Success";
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
// Toast.makeText(getApplicationContext(), result, Toast.LENGTH_LONG).show();
TextView textViewResult = (TextView) findViewById(R.id.txtResultCheck);
textViewResult.setText("Successfully Registered");
}
}
SendPostReqAsynTask sendPostReqAsynTask=new SendPostReqAsynTask();
sendPostReqAsynTask.execute(username,password);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
public void onSignupSuccess() {
//btn_signup.setEnabled(true);
Intent intent=new Intent(SignupActivity.this,MainActivity.class);
startActivity(intent);
SignupActivity.this.getIntent();
}
public void onSignupFailed() {
Toast.makeText(getBaseContext(), "Failed to Register", Toast.LENGTH_LONG).show();
// btn_signup.setEnabled(true);
}
public boolean validate() {
boolean valid = true;
String username = input_username.getText().toString();
String email = input_email.getText().toString();
String password = input_password.getText().toString();
if (username.isEmpty() || username.length() < 3) {
input_username.setError("at least 3 characters");
valid = false;
} else {
input_username.setError(null);
}
if (email.isEmpty() || !android.util.Patterns.EMAIL_ADDRESS.matcher(email).matches()) {
input_email.setError("enter a valid email address");
valid = false;
} else {
input_email.setError(null);
}
if (password.isEmpty() || password.length() < 4 || password.length() > 10) {
input_password.setError("between 4 and 10 alphanumeric characters");
valid = false;
} else {
input_password.setError(null);
}
return valid;
}
}
LoginActivity.Java
package com.kezinking.nupur.kezinking;
import android.animation.ObjectAnimator;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.Space;
import android.widget.TextView;
import android.widget.Toast;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
/**
* Created by Nupur on 8/2/2016.
*/
public class LoginActivity extends AppCompatActivity {
public static final String MY_JSON = "MY_JSON";
private static final String JSON_URL = "http://kezinking.com/AndroidLogin";
EditText input_email, input_password;
Button btn_login, btnContactUs, btnWorkhr, btnDeltime, btnMoneyBack;
TextView link_signup, textViewJSON, txtcheck;
private static Boolean flag = false;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
btn_login = (Button) findViewById(R.id.btn_login);
link_signup = (TextView) findViewById(R.id.link_signup);
input_email = (EditText) findViewById(R.id.input_email);
input_password = (EditText) findViewById(R.id.input_password);
textViewJSON = (TextView) findViewById(R.id.textViewJSON);
// value=(TextView)findViewById(R.id.value);
txtcheck = (TextView) findViewById(R.id.txtcheck);
btn_login.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
login();
}
});
link_signup.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(LoginActivity.this, SignupActivity.class);
startActivity(intent);
LoginActivity.this.getIntent();
}
});
}
@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);
}
public void login() {
if (!validate()) {
onLoginFailed();
return;
} else {
getJSON(JSON_URL);
}
}
public void getJSON(String url) {
class GetJSON extends AsyncTask<String, Void, String> {
ProgressDialog loading;
@Override
protected void onPreExecute() {
super.onPreExecute();
loading = ProgressDialog.show(LoginActivity.this, "Please Wait...", null, true, true);
}
@Override
protected String doInBackground(String... params) {
String uri = params[0];
BufferedReader bufferedReader = null;
try {
URL url = new URL(uri);
HttpURLConnection con = (HttpURLConnection) url.openConnection();
StringBuilder sb = new StringBuilder();
bufferedReader = new BufferedReader(new InputStreamReader(con.getInputStream()));
//String result=null;
String json;
while ((json = bufferedReader.readLine()) != null) {
sb.append(json + "\n");
}
return sb.toString().trim();
} catch (Exception e) {
return null;
}
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
loading.dismiss();
textViewJSON.setText(s);
String jsonString = textViewJSON.getText().toString();
//String jsonString = "{\"result\":[{\"Vendor_ID\":\"1\",\"username\":\"nupur\",\"password\":\"nupur\"},{\"Vendor_ID\":\"4\",\"username\":\"\",\"password\":\"\"},{\"Vendor_ID\":\"3\",\"username\":\"nupur\",\"password\":\"1234\"},{\"Vendor_ID\":\"5\",\"username\":\"RAJ\",\"password\":\"RAJ\"},{\"Vendor_ID\":\"6\",\"username\":\"RAJ\",\"password\":\"RAJ\"},{\"Vendor_ID\":\"7\",\"username\":\"\",\"password\":\"\"},{\"Vendor_ID\":\"8\",\"username\":\"\",\"password\":\"\"},{\"Vendor_ID\":\"9\",\"username\":\"\",\"password\":\"\"},{\"Vendor_ID\":\"10\",\"username\":\"\",\"password\":\"\"},{\"Vendor_ID\":\"11\",\"username\":\"\",\"password\":\"\"},{\"Vendor_ID\":\"12\",\"username\":\"RAM\",\"password\":\"RAM\"},{\"Vendor_ID\":\"13\",\"username\":\"RAM\",\"password\":\"RAM\"},{\"Vendor_ID\":\"14\",\"username\":\"RAM\",\"password\":\"RAM\"},{\"Vendor_ID\":\"15\",\"username\":\"RAM\",\"password\":\"RAM\"},{\"Vendor_ID\":\"16\",\"username\":\"Nupur\",\"password\":\"Nupur\"},{\"Vendor_ID\":\"17\",\"username\":\"Nupur\",\"password\":\"Nupur\"},{\"Vendor_ID\":\"18\",\"username\":\"Nupur\",\"password\":\"Nupur\"},{\"Vendor_ID\":\"19\",\"username\":\"Nupur\",\"password\":\"Nupur\"},{\"Vendor_ID\":\"20\",\"username\":\"Rohit\",\"password\":\"Rohit\"},{\"Vendor_ID\":\"21\",\"username\":\"RAM\",\"password\":\"RAM\"},{\"Vendor_ID\":\"22\",\"username\":\"\",\"password\":\"\"},{\"Vendor_ID\":\"23\",\"username\":\"\",\"password\":\"\"},{\"Vendor_ID\":\"24\",\"username\":\"RAM\",\"password\":\"RAM\"},{\"Vendor_ID\":\"35\",\"username\":\"SAGAR\",\"password\":\"SAGAR\"},{\"Vendor_ID\":\"34\",\"username\":\"SAGAR\",\"password\":\"SAGAR\"},{\"Vendor_ID\":\"33\",\"username\":\"SAGAR\",\"password\":\"SAGAR\"},{\"Vendor_ID\":\"32\",\"username\":\"RAM\",\"password\":\"RAM\"},{\"Vendor_ID\":\"31\",\"username\":\"\",\"password\":\"\"},{\"Vendor_ID\":\"36\",\"username\":\"SAGAR\",\"password\":\"SAGAR\"},{\"Vendor_ID\":\"37\",\"username\":\"SAGAR\",\"password\":\"SAGAR\"},{\"Vendor_ID\":\"38\",\"username\":\"SAGAR\",\"password\":\"SAGAR\"},{\"Vendor_ID\":\"39\",\"username\":\"SAGAR\",\"password\":\"SAGAR\"},{\"Vendor_ID\":\"40\",\"username\":\"SAGAR\",\"password\":\"SAGAR\"},{\"Vendor_ID\":\"41\",\"username\":\"SAGAR\",\"password\":\"SAGAR\"},{\"Vendor_ID\":\"73\",\"username\":\"\",\"password\":\"\"},{\"Vendor_ID\":\"43\",\"username\":\"SAGAR\",\"password\":\"SAGAR\"},{\"Vendor_ID\":\"44\",\"username\":\"SAGAR\",\"password\":\"SAGAR\"},{\"Vendor_ID\":\"45\",\"username\":\"SAGAR\",\"password\":\"SAGAR\"},{\"Vendor_ID\":\"46\",\"username\":\"SAGAR\",\"password\":\"SAGAR\"},{\"Vendor_ID\":\"47\",\"username\":\"username\",\"password\":\"password\"},{\"Vendor_ID\":\"74\",\"username\":\"SAGAR\",\"password\":\"SAGAR\"},{\"Vendor_ID\":\"75\",\"username\":\"SAGAR\",\"password\":\"SAGAR\"},{\"Vendor_ID\":\"72\",\"username\":\"Krishna\",\"password\":\"Krishna\"},{\"Vendor_ID\":\"68\",\"username\":\"Honey\",\"password\":\"Honey\"},{\"Vendor_ID\":\"69\",\"username\":\"Ram\",\"password\":\"Ram\"},{\"Vendor_ID\":\"70\",\"username\":\"Ram\",\"password\":\"Ram\"},{\"Vendor_ID\":\"71\",\"username\":\"Ram\",\"password\":\"Ram\"}]}";
//String email = (input_email.getText().toString());
//txtcheck.setText(jsonString);
String email = input_email.getText().toString();
String password = input_password.getText().toString();
// final String myResult = (email) + (password);
String value = (String.valueOf(email + password));
System.out.println(value);
// String value=(input_email.getText().toString()+input_password.getText().toString());
//String input_email = "";
//String input_password = "";
try {
JSONObject jsonObject = new JSONObject(jsonString);
JSONArray result = jsonObject.getJSONArray("result");
//System.out.println("result " + result);
//iterate through json array and check if id is same with your search
//System.out.println("length " + result.length());
for (int i = 0; i < result.length(); i++) {
System.out.println(i);
JSONObject item = result.getJSONObject(i);
String Email = item.getString("email");
String Password = item.getString("password");
//System.out.println("Email from json "+ Email);
//System.out.println("Password from json " + Password);
if (Email.equals(email) && Password.equals(password)) {
System.out.println("Email from json"+ Email);
System.out.println("Password from json" + Password);
flag=true;
onLoginSuccess();
break;
}
}
if(!flag){
onLoginFailed();
}
} catch (JSONException e) {
e.printStackTrace();
}
//here you can show the result
Log.v(this.getClass().getSimpleName(), "email = " + email);
Log.v(this.getClass().getSimpleName(), "password = " + password);
//txtcheck.setText(email);
}
}
GetJSON gj = new GetJSON();
gj.execute(url);
}
@Override
public void onBackPressed() {
// disable going back to the MainActivity
moveTaskToBack(true);
}
public void onLoginSuccess() {
btn_login.setEnabled(true);
Intent intent = new Intent(LoginActivity.this, MainActivity.class);
startActivity(intent);
LoginActivity.this.getIntent();
// finish();
}
public void onLoginFailed() {
Toast.makeText(getBaseContext(), "Login failed", Toast.LENGTH_LONG).show();
// btn_login.setEnabled(true);
}
public boolean validate() {
boolean valid = true;
String email = input_email.getText().toString();
String password = input_password.getText().toString();
if (email.isEmpty() || !android.util.Patterns.EMAIL_ADDRESS.matcher(email).matches()) {
input_email.setError("enter a valid email address");
valid = false;
} else {
input_email.setError(null);
}
if (password.isEmpty() || password.length() < 4 || password.length() > 10) {
input_password.setError("between 4 and 10 alphanumeric characters");
valid = false;
} else {
input_password.setError(null);
}
return valid;
}
}
PHP- AndroidLogin.php
<?php
$con=mysqli_connect("localhost","amodbina0106","Amodbina200","kezin_king");
if ($con->connect_error) {
die("Connection failed: " . $con->connect_error);
}
?>
<?php
$sql=mysqli_query($con,"SELECT email,password FROM `users` WHERE 1");
$result=array();
while($row=mysqli_fetch_assoc($sql))
{
$result[]=$row;
}
echo json_encode(array("result"=>$result));
?>
PHP-SignUpAndroid.php
<?php
$con=mysqli_connect("localhost","amodbina0106","Amodbina200","kezin_king");
if ($con->connect_error) {
die("Connection failed: " . $con->connect_error);
}
echo "Connected successfully";
?>
<html>
<head>
<meta charset="utf-8">
</head>
<body>
<table style="width: 100%">
<?php
$username=($_POST['username']);
$email=($_POST['email']);
$password=($_POST['password']);
$encryptedpassword=md5($password);
$sql=mysqli_query($con,"INSERT INTO `kezin_king`.`users` (`user_id`, `username`, `name`, `shop-name`, `password`, `email`, `adr`, `con_no`, `type`, `profile`, `doj`, `banner`, `banner1`, `lat`, `lon`, `email_code`, `activation`) VALUES (NULL, '$username', '', '', '$encryptedpassword', '$email', '', '', '', '', '', '', '', '', '', '', '1')");
$sql=mysqli_query($con,"SELECT name,username,password,email FROM `user` WHERE 1");
while($row=mysqli_fetch_assoc($sql))
{
$username=$row['username'];
$email=$row['email'];
$password=$row['password'];
?>
<tr>
<th><?php echo $username; ?></th>
<th><?php echo $email; ?></th>
<th><?php echo $password; ?></th>
</tr>
<?php }?>
</table>
请帮帮我。如果密码加密，我们可以登录吗？ 在此先感谢
错误/输出： -
V/GetJSON: email = check@check.com
V/GetJSON: password = check1
I/ViewRootImpl: CPU Rendering VSync enable = true
“LoginFailed”