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Vue使用axios出现options请求方法

以下代码如果需要在你本地跑起来:

Ⅰ.需要apache服务,并把php代码丢进去指定位置

Ⅱ.将下面http://www.test.com/day05/jiekou.php地址,改成自己指定位置的域名或ip

1.从一段简易代码说起

前端代码

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
  <!-- 导入axios -->
  <script src="/UploadFiles/2021-04-02/axios.min.js">

php接口代码

<"Access-Control-Allow-Origin:*");
// 允许的响应类型
header('Access-Control-Allow-Methods: GET, POST, PUT,DELETE,OPTIONS,PATCH');
// 响应头设置
header("Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept, Authorization");

// 获取form表单值
$username = $_POST['username'];

$password = $_POST['password'];

// 判断form表单中key
if(isset($_POST['username']) && isset($_POST['password'])){
  // 判断username和password
  if($username == "admin" && $password == "123456"){
    
    $result = array("success" => 1, "code" => 101, "data" => array("username" => $username, "password" => $password));  
  
  }else{
    $result = array("success" => 0, "code" => 103, "data" => null);
  }
  
}else{
  $result = array("success" => 0, "code" => 100, "data" => null);
}
// 将错误信息(数组)转换成json类型,返回前端
echo(json_encode($result));
"text-align: center">Vue使用axios出现options请求方法

2.解决:

方法Ⅰ.引入qs模块处理数据:修改上面的html代码

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
  <!-- 导入axios -->
  <script src="/UploadFiles/2021-04-02/axios.min.js">

方法Ⅱ.后端开放options请求跨域,并用对应的方法获取options提交的复杂数据

<"Access-Control-Allow-Origin:*");
// 响应类型
header('Access-Control-Allow-Methods: GET, POST, PUT,DELETE,OPTIONS,PATCH');
// 响应头设置
header("Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept, Authorization");

//如果是options请求,就结束执行下面语句
if($_SERVER['REQUEST_METHOD']=='OPTIONS'){
  //exit是用来结束程序执行的,如果参数是字符串,PHP将会直接把字符串输出,
  //如果参数是整型(范围是0-254),那个参数将会被作为结束状态使用。
  exit('options类型的请求,结束');
}

//option请求无法用常规方法($_GET, $_POST, $_REQUEST)获取请求参数

$option_data_str = file_get_contents("php://input");
$option_data = json_decode($option_data_str,true);
$username = isset($option_data['username'])"";
$password = isset($option_data['password'])"";


// 判断form表单中key
if(isset($username) && isset($password)){
  // 判断username和password
  if($username == "admin" && $password == "123456"){
    
    $result = array("success" => 1, "code" => 101, "data" => array("username" => $username, "password" => $password));  
  
  }else{
    $result = array("success" => 0, "code" => 103, "data" => null);
  }
  
}else{
  $result = array("success" => 0, "code" => 100, "data" => null);
}
// 将错误信息(数组)转换成json类型,返回前端
echo(json_encode($result));
"_blank" href="https://www.npmjs.com/package/qs">https://www.npmjs.com/package/qs)

qs.parse()将URL解析成对象的形式

qs.stringify()将对象 序列化成URL的形式,以&进行拼接(我们大都用到这个)

"htmlcode">

import qs from 'qs';
Vue.prototype.$qs = qs;

在所有的vue实例组件里都可以直接用this.$qs.stringify(要处理的数据),进行数据转换

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。