调整异常信息赋值问题

src/http/Response.php

@@ -2,6 +2,7 @@
 
 namespace Tansilu\HfPayLib\http;
 
+use GuzzleHttp\Exception\InvalidArgumentException;
 use Psr\Http\Message\ResponseInterface;
 use Tansilu\HfPayLib\exception\ApiException;
 
@@ -11,7 +12,7 @@ class Response
      * @var int 状态码
      */
     private int $statusCode = 200;
-    private array $body = [];
+    private ?array $body = [];
 
     private string $source;
 
@@ -34,7 +35,14 @@ class Response
             switch ($bodyFormat[0]) {
                 case 'text/html':
                 case 'application/json':
-                    $self->body = json_decode($self->source, true);
+                    try {
+                        $deRet = json_decode($self->source, true);
+                        if($deRet != null) {
+                            $self->body = $deRet;
+                        }
+                    } catch (InvalidArgumentException $e) {
+                        throw new ApiException('反馈的消息格式错误');
+                    }
                     break;
                 case 'application/xml':
                 case 'text/plain':
@@ -45,7 +53,7 @@ class Response
         return $self;
     }
 
-    public static function tempInit(int $code, array $body)
+    public static function tempInit(int $code, ?array $body): Response
     {
         $self = new self();
         $self->statusCode = $code;