dqwh26750
2018-04-17 15:07
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this.http.post不会发送角度为4的参数

I need to create a login system, I try to send the params to the PHP server.

Angular app

return this.http.post<any>('/s/login/index.php', {
                username: username,
                password: password
            }).map(user => {
                console.log(username); 
                // login successful if there's a jwt token in the response
                if (user) {
                    // store user details and jwt token in local storage to keep user logged in between page refreshes
                }

                return user;
            });
    }

PHP server

if($_SERVER["REQUEST_METHOD"] == "POST"){

 // Check if username is empty
if(empty(trim($_POST["username"]))){
    $username_err = 'Please enter username.';
    $resp->body->message=$username_err;
    $resp=json_encode($resp);
    echo $resp;
}

But the server always returns

{status: "400", body: {message: "Please enter username."}}

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我需要创建一个登录系统，我尝试将params发送到PHP服务器。 \ n

Angular app 

 返回this.http.post＆lt; any＆gt;（'/ s / login / index.php'，{
 username：username，  
密码：密码
}）。map（user =＆gt; {
 console.log（username）; 
 //如果响应中有jwt令牌，则登录成功
 if（user）{
 /  /将用户详细信息和jwt令牌存储在本地存储中，以保持用户在页面刷新之间登录
} 
 
返回用户; 
}）; 
} 
   
 
  
 PHP服务器 
 
 
  if（$ _ SERVER [“REQUEST_METHOD”] ==“POST”）{
 
 //检查用户名是否为空
if（空）  （trim（$ _ POST [“username”]）））{
 $ username_err ='请输入用户名。'; 
 $ resp-＆gt; body-＆gt; message = $ username_err; 
 $ resp = json_encode（$  resp）; 
 echo $ resp; 
} 
   
 
 
但是服务器总是返回 
 
 
  {status：“400”，body：{message：“请输入用户名。”}}
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1条回答 默认 最新

  • dongyikong6207 2018-04-17 15:16
    最佳回答

    It is because you are not setting headers.

    first import necessary modules

    import {HttpClient,HttpHeaders} from '@angular/common/http';
import {URLSearchParams} from '@angular/http';

    try it this way.

    let headers = new Headers({ 'Content-Type': 'application/x-www-form-urlencoded' });
let options = {
    headers: headers
};

let body = new URLSearchParams();
body.set('username', username);
body.set('password', password);

return this.http.post<any>('/s/login/index.php', body, options).map(user => {
            console.log(username); 
            // login successful if there's a jwt token in the response
            if (user) {
                // store user details and jwt token in local storage to keep user logged in between page refreshes
            }

            return user;
        });
}

    Tell me if it does not work. I am here !

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