PHP请求Java以body体，值为json传值方法

public function http($url, $postfields = '', $method = 'GET', $headers = [])

{

    $ci = curl_init();

    curl_setopt($ci, CURLOPT_RETURNTRANSFER, 1);

    curl_setopt($ci, CURLOPT_CONNECTTIMEOUT, 5);

    curl_setopt($ci, CURLOPT_TIMEOUT, 5);

    curl_setopt($ci, CURLOPT_HTTPHEADER, $headers);

    curl_setopt($ci, CURLOPT_URL, $url);

    if ($method == 'POST') {

        curl_setopt($ci, CURLOPT_POST, true);

        if ($postfields != '')

            curl_setopt($ci, CURLOPT_POSTFIELDS, $postfields);

    } else {

        curl_setopt($ci, CURLOPT_CUSTOMREQUEST, 'GET');

        curl_setopt($ci, CURLOPT_POSTFIELDS, $postfields);

    }

    $response = curl_exec($ci);

    curl_close($ci);

    $json_r = array();

    if ($response != '')

        $json_r = json_decode($response, true);

    return $json_r;

}

//PHP接受java中body体 json流方式

file_get_contents('php://input');