Verify an App Store Transaction Receipt 【苹果服务端 验证一个应用程序商店交易收据有效性】

 

1、 从Transaction 的TransactionReceipt属性中得到接收的数据，并以base64编码；

2、创建JSON对象，字典格式，单键值对，键名为“receiptdata”，值为上一次编码的数据，效果：

{"receipt-data":"base64编码之后的数据"}

3、发送HTTP POST请求，将数据发送到App Store ，其地址为：https://buy.itunes.apple.com/verifyReceipt

4、App Store的返回值也是一个JSON格式对象，包括两个键值对：

{
"status" : 0,
"receipt" : { … }
}
说明：

如果status的值为0，就说明该receipt为有效的，否则就是无效的。

 public int verifyReceipt( byte[] receipt) {       int status = -1;        //This is the URL of the REST webservice in iTunes App Store        URL url = new URL("https://buy.itunes.apple.com/verifyReceipt");        //make connection, use post mode        HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();        connection.setRequestMethod("POST");        connection.setDoOutput(true);        connection.setAllowUserInteraction(false);        //Encode the binary receipt data into Base 64        //Here I'm using org.apache.commons.codec.binary.Base64 as an encoder, since commons-codec is already in Grails classpath        Base64 encoder = new Base64();        String encodedReceipt = new String(encoder.encode(receipt));        //Create a JSON query object        //Here I'm using Grails' org.codehaus.groovy.grails.web.json.JSONObject        Map map = new HashMap();        map.put("receipt-data", encodedReceipt);        JSONObject jsonObject = new JSONObject(map);        //Write the JSON query object to the connection output stream        PrintStream ps = new PrintStream(connection.getOutputStream());        ps.print(jsonObject.toString());        ps.close();        //Call the service        BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream()));        //Extract response        String str;        StringBuffer sb = new StringBuffer();        while ((str = br.readLine()) != null) {            sb.append(str);            sb.append("/n");        }        br.close();        String response = sb.toString();        //Deserialize response        JSONObject result = new JSONObject(response);       status = result.getInt("status");        if (status == 0) {            //provide content        } else {            //signal error, throw an exception, do your stuff honey!        }        return status ;    }

 

 

验证的方式也可以采用HTTP协议：HttpClient，下载httpcomponents-client，然后导入lib里的几个jar包。

这也是一种方式，不再进行多余的说明了。所谓条条道路通“苹果”。