inputStream 编码问题（特殊字符：ñ、á、...）

Question

欢迎大家，我目前正在开发一个网络服务，但我很难让这个方法处理 ñ、ç、á、è 等字符，...似乎是与我的输入流有关，它似乎没有正确编码，这是代码：

    private static String sendPost(String url, Map<String, JSONObject> params) throws Exception {
    String responseString;

    StringBuilder urlParameters = new StringBuilder(400);
    if (params != null) {
        for (Entry<String, JSONObject> entry : params.entrySet()) {
            urlParameters.append(entry.getKey()).append("=").append(entry.getValue().toString()).append("&");
        }

    }
    url += urlParameters.toString();
    url = url.replace(" ", "%20");
    URL obj = new URL(url);
    HttpURLConnection con = (HttpURLConnection) obj.openConnection();
    con.setRequestMethod("POST");
    con.setRequestProperty("charset", "utf-8");
    con.setDoOutput(true);
    int responseCode = con.getResponseCode();
    if (responseCode == HttpStatus.SC_OK) {
        BufferedReader in = null;
        StringBuffer response = null;
        try{
            //when i check 'con' all seems to be fine
            in = new BufferedReader(new InputStreamReader(con.getInputStream(), "UTF-8"));
            String inputLine;
            response = new StringBuffer();
            while ((inputLine = in.readLine()) != null) {
                response.append(inputLine);
            }
        }finally{
            in.close();
        }
        responseString = response.toString();
    } else {
        responseString = new StringBuilder(25).append(responseCode).toString();
    }
    return responseString;
}

示例：在 "con" http:\direction.dom\data\W-S\something?param={example:"castaña"}
和 InputStream returns: http:\direction.dom\data\W-S\something?param={example:"casta�a"}

提前致谢。

Answer 1

这是一个非常棘手的案例，因为您要处理 HTTP 参数。这些可以是用户在浏览器中输入的任何编码。

根据您的示例，您的用户发送的数据不是 UTF-8。它可以是 ISO-8859-1、ISO-8859-15 或 windows-1252。

您可以通过为您的网络表单设置正确的 HTTP header 来推动您的用户使用 UTF-8：response.setContentType("text/xml; charset=utf-8)：

Answer 2

我的伙伴正在想办法解决它：

private static String sendPost(String url, Map<String, JSONObject> params) throws Exception {
    String responseString;

    StringBuilder urlParameters = new StringBuilder(400);
    if (params != null) {
        for (Entry<String, JSONObject> entry : params.entrySet()) {
            urlParameters.append(entry.getKey()).append("=").append(entry.getValue().toString()).append("&");
        }
    }

    url = url.replace(" ", "%20");
    URL obj = new URL(url);
    HttpURLConnection con = (HttpURLConnection) obj.openConnection();
    con.setRequestMethod("POST");
    con.setRequestProperty("accept-charset", "UTF-8");
    con.setRequestProperty("content-type", "application/x-www-form-urlencoded; charset=utf-8");
    con.setDoOutput(true);

    DataOutputStream wr = new DataOutputStream(con.getOutputStream());
    BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(wr, "UTF-8"));
    writer.write(urlParameters.toString());
    writer.close();
    wr.close();

    int responseCode = con.getResponseCode();
    if (responseCode == HttpStatus.SC_OK) {
        BufferedReader in = null;
        StringBuffer response = null;
        try{
            in = new BufferedReader(new InputStreamReader(con.getInputStream(), "UTF-8"));
            String inputLine;
            response = new StringBuffer();

            while ((inputLine = in.readLine()) != null) {
                response.append(inputLine);
            }
        }finally{
            in.close();
        }
        responseString = response.toString();
    } else {
        responseString = new StringBuilder(25).append(responseCode).toString();
    }
    return responseString;
}

inputStream 编码问题（特殊字符：ñ、á、...）

inputStream encoding issues (Special characters: ñ, á,...)

java

web-services

inputstream

utf-8

http-post