PHP調用接口用post方法傳送json數據

1、核心代碼：

<?php
require("helper.php");
header('content-type:text/html;charset=utf-8');

$key = 'C43D436036E643F5AFA654FED758BCF7';

//參數數組
$post_data = array (
    "parter" => '2308',
    "orderid" => '201711021121',
);

//簽名
ksort($post_data);//鍵按ASCII碼升序排序
$preSignString=getPreSignString($post_data);
$sign = md5($preSignString.'&key='.$key);
$sign=strtoupper($sign);//大寫

//簽名參數添加到參數數組
$post_data['sign']=$sign;

//參數轉成json
$parameters =json_encode($post_data);

//發送請求
$url='http://localhost:64781/api/Query/QueryStatus';
$ch = curl_init();
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POSTFIELDS, $parameters);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$response = curl_exec($ch);
curl_close($ch);

//處理返回數據
$responseData=json_decode($response,true);//發序列化為數組

print_r($responseData);

2、工具類代碼：

<?php

/*
 * 獲取待簽名字符串
 * */
function getPreSignString($array)
{
    $prestr='';

    if(empty($array))
        return $prestr;
    else
    {
        foreach($array as $key=>$value){
            if(!empty(trim($value)) && strtolower($key)!='sign') {
                $prestr.=$key.'='.$value.'&';
            }
        }

        if(!empty($prestr)){
            $length=strlen($prestr);
            $prestr=substr($prestr,0,$length-1);//去掉最后一個‘&’
        }

        return $prestr;
    }
}

 3、調試：

3.1 遠程接口接收數據包：

以c#為例（以流的形式接收）：

Stream requestData = HttpContext.Current.Request.InputStream;
 //獲取參數
 byte[] b = new byte[requestData.Length];
 requestData.Read(b, 0, (int)requestData.Length);
 string postdata = Encoding.UTF8.GetString(b);

postdata 結果如下：

{"orderid":"201711021121","parter":"2308","sign":"A75F1B4687105C84666F0812AB24232D"}

3.2 遠程接口返回數據包（這里把接收的json轉為數組）：

Array ( [orderid] => 201711021121 [ekaorderid] => 17110213495685030814 [opstate] => 1 [parter] => 2308 [ovalue] => 100.1000 [code] => 0000 [msg] => 成功 )