我正在尝试更新具有以下属性的数据库 -
username first_name last_name email password
使用以下php代码：
<?php
$con = mysqli_connect("localhost", "id2748657_users", "users", "id2748657_users");
$username = $_POST["username"];
$first_name = $_POST["first_name"];
$last_name = $_POST["last_name"];
$email = $_POST["email"];
$password = $_POST["password"];
$statement = mysqli_prepare($con, "INSERT INTO users (username, first_name, last_name, email, password) VALUES (?, ?, ?, ?,?)");
mysqli_stmt_bind_param($statement, "sssss", $username, $first_name, $last_name, $email, $password);
mysqli_stmt_execute($statement);
$response = array();
$response["success"] = true;
echo json_encode($response);
?>
这是我用来发出请求的类：
public class RegisterRequest extends StringRequest {
private static final String REGISTER_REQUEST_URL = "http://fibi.000webhostapp.com/register.php";
private Map<String,String> params;
public RegisterRequest(String username, String first_name, String last_name,
String email, String password,
Response.Listener<String> listener){
super(Method.POST, REGISTER_REQUEST_URL,listener, null);
params = new HashMap<>();
params.put("username", username);
params.put("first_name", first_name);
params.put("last_name", last_name);
params.put("email", email);
params.put("password", password);
}
@Override
public Map<String, String> getParams() {
return params;
}
}
这是注册活动：
package com.android.fiby;
import android.content.Intent;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.toolbox.Volley;
import org.json.JSONException;
import org.json.JSONObject;
public class RegisterActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_register);
final EditText etUsername = (EditText) findViewById(R.id.etUsername);
final EditText etFirstname = (EditText) findViewById(R.id.etFirstname);
final EditText etLastname = (EditText) findViewById(R.id.etLastname);
final EditText etEmail = (EditText) findViewById(R.id.etEmail);
final EditText etPassword = (EditText) findViewById(R.id.etPassword);
final Button bSignUp = (Button) findViewById(R.id.btSignUp);
bSignUp.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
final String username = etUsername.getText().toString();
final String first_name = etFirstname.getText().toString();
final String last_name = etLastname.getText().toString();
final String email = etEmail.getText().toString();
final String password = etPassword.getText().toString();
Response.Listener<String> response = new Response.Listener<String>() {
@Override
public void onResponse(String response) {
try {
JSONObject json_response = new JSONObject(response);
boolean success = json_response.getBoolean("success");
if (success) {
Intent intent = new Intent(RegisterActivity.this, LoginActivity.class);
RegisterActivity.this.startActivity(intent);
} else {
AlertDialog.Builder builder =
new AlertDialog.Builder(RegisterActivity.this);
builder.setMessage("Register Failed")
.setNegativeButton("Retry", null)
.create()
.show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
};
RegisterRequest registerRequest = new RegisterRequest(username, first_name, last_name, email, password, response);
RequestQueue queue = Volley.newRequestQueue(RegisterActivity.this);
queue.add(registerRequest);
}
});
}
}
除了按下按钮无效外，我在浏览器中收到以下错误/警告：
Notice: Undefined index: username in /storage/ssd1/657/2748657/public_html/register.php on line 4
Notice: Undefined index: first_name in /storage/ssd1/657/2748657/public_html/register.php on line 5
Notice: Undefined index: last_name in /storage/ssd1/657/2748657/public_html/register.php on line 6
Notice: Undefined index: email in /storage/ssd1/657/2748657/public_html/register.php on line 7
Notice: Undefined index: password in /storage/ssd1/657/2748657/public_html/register.php on line 8
{"success":true}
我试图通过＆＃34;硬编码＆＃34; php文件中的字符串，并更新了数据库。似乎Volley不会更新params或其他东西。
答案 0 :(得分：2)
<?php
//Always check that you are receiving a POST|GET request before running your codes.
if( !empty( $_POST ) )
{
$con = mysqli_connect("localhost", "id2748657_users", "users", "id2748657_users");
$response = array(); //set it to empty
$username = $_POST["username"];
$first_name = $_POST["first_name"];
$last_name = $_POST["last_name"];
$email = $_POST["email"];
$password = $_POST["password"];
//Create your query
$query="INSERT INTO users (username, first_name, last_name, email, password) VALUES (?, ?, ?, ?,?)";
$statement = mysqli_prepare($con, $query);
mysqli_stmt_bind_param($statement, "sssss", $username, $first_name, $last_name, $email, $password);
//Get boolean `true | false` as resposne
$response["success"] = mysqli_stmt_execute($statement);
echo json_encode($response);
}
?>
根据您的错误，这应该不会修复undefined index用户名，blah，blah
答案 1 :(得分：1)
我认为getParams()无法在你的截击请求中工作。您可以使用loopj库而不是凌空。它易于使用。请尝试下面的代码
在您的gradle中添加依赖
compile 'com.loopj.android:android-async-http:1.4.9'
请求您的网络Api
RequestParams params = new RequestParams();
params.put("username", username);
params.put("first_name", first_name);
params.put("last_name", last_name);
params.put("email", email);
params.put("password", password);
String url="http://fibi.000webhostapp.com/register.php";
new AsyncHttpClient().post(url, params, new AsyncHttpResponseHandler() {
@Override
public void onSuccess(int statusCode, Header[] headers, byte[] responseBody) {
String rs = new String(responseBody);
// do whatever you want
}
@Override
public void onFailure(int statusCode, Header[] headers, byte[] responseBody, Throwable error) {
}
});