问题描述
我正在使用Angular 9和Ionic 5创建一个应用程序,对此我很陌生,所以如果我错过了明显的事情,请原谅我。以下是我的应用代码:
import { HttpClient } from '@angular/common/http';
etc...
constructor(private http: HttpClient) { }
authenticate(phone: string,password: string) {
let frmData = new URLSearchParams();
// let frmData = new FormData(); //just to show that I have tried this also
const headeroptions = {
// 'enctype': 'multipart/form-frmData;',// when using FormData above
'Content-Type' : 'application/x-www-form-urlencoded; charset=UTF-8'
};
frmData.append('emailOrMobile',phone);
frmData.append('password',password);
console.log("login: " + phone + " " + password); //this shows the values correctly
console.log("frmData: " + frmData); //frmData: emailOrMobile=1234567890&password=111111
return this.http.post<any>('https://example.com/APP/login.PHP',{frmData},{headers: headeroptions}
// {"emailOrMobile":phone,"password":password} //Also tried without creating the object beforehand
).subscribe(data => {
console.log("Subscribed Data: ");
console.log(data);
},error => {
console.log('error: ' + error.error);
console.log('Name: ' + error.name);
console.log('Message: ' + error.message);
console.log('Status: ' + error.status);
});
}
我还尝试了将.subscribe ...等替换为的其他版本:
.pipe(tap(this.setUserData.bind(this)));
但是那也不起作用。有很多解决方案,但是大多数解决方案都使用较旧版本的Angular,并且不使用HttpClient或建议使用可观察的方法-我已经在这样做了。
$data = json_decode(file_get_contents("PHP://input"),true);
如果我回显或尝试使用$ data,它是一个空数组,打印为{}或只是一个空格(无法一致地打印'{}')。我什至尝试过
count($data);
并返回0。
解决方法
我在本地计算机上进行了测试,它通过了args作为javascript对象:
{ emailOrMobile: phone,password: password}
在后端的php脚本中,我通常允许CORS请求。我不确定您的环境是否需要(请参阅命令header("Access-Control-Allow-Origin: *");
)。
页面的完整打字稿:
import { Component } from '@angular/core';
import { HttpClient } from '@angular/common/http';
@Component({
selector: 'app-tab1',templateUrl: 'tab1.page.html',styleUrls: ['tab1.page.scss']
})
export class Tab1Page {
constructor(private http: HttpClient) {
this.authenticate('123','mypassword');
}
authenticate(phone: string,password: string) {
const headeroptions = {
'Content-Type' : 'application/x-www-form-urlencoded; charset=UTF-8'
};
let params = { emailOrMobile: phone,password: password};
return this.http.post<any>('http://localhost/backend/authtest.php',params,{headers: headeroptions}).subscribe(data => {
console.log("Subscribed Data: ");
console.log(data);
},error => {
console.log('error: ' + error.error);
console.log('Name: ' + error.name);
console.log('Message: ' + error.message);
console.log('Status: ' + error.status);
});
}
}
后端authtest.php
中的php脚本:
<?php
//Allow requests from different domain:
header("Access-Control-Allow-Origin: *");
$data = json_decode(file_get_contents("php://input"),true);
echo json_encode([ 'success' => true,'params' => $data]);
运行离子应用程序后,我在Chrome中获得的输出: