guzzle的使用

guzzle包是一个类似curl功能的composer。guzzle是一个php的http客户端，可用于php调用第三方接口等。

安装

推荐使用composer安装

composer require guzzlehttp/guzzle

使用

• 客户端实例化

$client = new \GuzzleHttp\Client();

• 客户端请求接口

$response = $client->request('GET', 'url');
$response= $client->get('url');//GET方式
$response= $client->post('url');//POST方式

• 返回respone的状态吗

echo $response->getStatusCode(); # 200

• 返回接口相应数据。一定要调用getContents()方法

$response->getBody()->getContents(); 

有时候$response->getBody()->getContents(); 返回为空,使用下面代码

$response->getBody()->rewind();
$response->getBody()->getContents(); 

• get方式调用
  url后面可以直接拼接上参数

$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={$appid}&secret={$appSecrect}";
$client = new Client();
$respone = $client->request('GET', $url);
dd($respone->getBody()->getContents());

• get方式设置头

$response = $client->get('https://api.github.com/user',[
                'headers'=>[
                    'Accept'=>'application/json',
                    'Authorization'=>'token '.$accessToken
                ]
            ]);

• post方式form-data传参

$client = new Client();
$response = $client->request('POST', 'url', [
                "form_params" => [
                    "img" => $payload['img_flow'],
                    'type' => 1
                ]
            ]);
dd($respone->getBody()->getContents());

• post方式设置header

 $response = $client->post($getTokenUrl, [
                'headers'=>['Accept'=>'application/json'],
                "form_params" => [
                    'client_id' => env('CLIENT_ID'),
                    'client_secret' => env('CLIENT_SECRET'),
                    'code' => $code,
                    'redirect_uri' => env('REDIRECT_URl'),
                ]
            ]);

• post方式json传参

$param = '{
            "touser":"oXgNt5Tsr-C4UjV1y6dE2nBOdHdk",
            "mp_template_msg":{
                "appid":"wx0dad7075223c2faf",
                "template_id":"j16ZBrZfNQFYRVYOGLF62xTBJN1z3-s-XwtS5NUJkR8",
                "url":"http://weixin.qq.com/download",
                "miniprogram":{
                    "appid":"wxb9440546a1a6bde2",
                    "pagepath":"index?foo=bar"
                },
                "data":{
                    "first":{
                        "value":"支付成功",
                        "color":"#173177"
                    },
                    "keyword1":{
                        "value":"24324353535",
                        "color":"#173177"
                    },
                    "keyword2":{
                        "value":"39.8元",
                        "color":"#173177"
                    }
                }
            }
        }';
        $client=new Client([
            'headers' => [ 'Content-Type' => 'application/json' ]
        ]);
        $response=$client->post($url,[
            'body'=>$param
        ]);
dd($respone->getBody()->getContents());

或者是下面这种，建议是下面这种调用。这种方式代表该接口传的参数是json，而如果想上面那种调用的话则是所有的接口的参数都是json。

$client=new Client();
$response=$client->post($url,[
    'headers' => [ 'Content-Type' => 'application/json' ],
    'body'=>$param
 ]);
return $response->getBody()->getContents();

• post方式x-www-form-urlencoded方式传参

$client=new Client();
$response=$client->post($url,[
    'headers' => [ 'Content-Type' => 'application/x-www-form-urlencoded' ]
    'body'=>$xml
]);
dd($respone->getBody()->getContents());

• post方式xml传参

$client=new Client([
     '
 ]);
$response=$client->post($url,[
    'headers' => [ 'Content-Type' => 'text/xml' ],
    'body'=>$xml
]);
dd($respone->getBody()->getContents());

常见问题

• 报"Class 'Symfony\Bridge\PsrHttpMessage\Factory\HttpFoundationFactory' not found"

1.首先取下guzzle包： composer remove guzzlehttp/guzzle

2. composer dump-autoload
3. 最后重新安装它：composer require guzzlehttp/guzzle