GSON未发送UTF-8 [英] GSON not sending in UTF-8

问题描述

以下方法发送JSON答复.但是，在接收端，我一直收到无效字符，并且UTF-8不会解码数据.我在做什么错了?

The following method sends a JSON reply. However on the receiving end I keep getting invalid characters, and UTF-8 isn't decoding the data. What am I doing wrong?

响应客户端=数据输出流

//Get the client request
            clientRequest = new BufferedReader(new InputStreamReader(connectedClient.getInputStream())); //connectedclient = socket

            //Start response object
            responseToClient = new DataOutputStream(connectedClient.getOutputStream());


/**
     * Sends a JSON response for an object
     * @param objectToEncode
     * @throws Exception
     */
    private void sendJSONResponse(Object objectToEncode) throws Exception{

        //Encode object into JSON
        String jsonString = new Gson().toJson(objectToEncode);

        // HTTP Header... Status code, last modified
        responseToClient.writeBytes(HTTP_OK_STATUS_CODE);
        responseToClient.writeBytes(CONTENT_TYPE_JSON);
        responseToClient.writeBytes("Last-modified: "+ HelperMethods.now() +" \r\n");
        responseToClient.writeBytes("\r\n"); 

        // The HTTP content starts here
        responseToClient.writeBytes(jsonString);

    }

推荐答案

我不知道您为什么要编写自己的HTTP协议代码.就像编写自己的XML解析器一样:无论您多么优秀的程序员，都一定会出错.

I have no idea why you would write your own HTTP protocol code. It's a lot like writing your own XML parser: No matter how good a programmer you are, you are bound to get it wrong.

无论如何，如 DataOutputStream 文档所述，执行在字符串上将只丢弃其高八位.因此，您得到的是……某种东西，但不是UTF8.您应该做的是:

Anyway, as the DataOutputStream documentation states, doing writeBytes on a String will just discard its high eight bits. So what you get is... something, but not UTF8. What you should do is:

String jsonString = new Gson().toJson(objectToEncode);
byte[] utf8JsonString = jsonString.getBytes("UTF8");
responseToClient.write(utf8JsonString, 0, utf8JsonString.Length);

这篇关于GSON未发送UTF-8的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！