java - {“错误”:“unsupported_grant_type”，“错误说明”:“不支持授予类型”} SalesForce Java

无法找出我在这里做错了什么。尝试在硒测试（java）中通过SF的API获取访问令牌，并不断收到相同的错误。在cypress（javascript）中进行了完全相同的调用，并且运行得很好，但是，由于其他原因，我无法走这条路（SF讨厌UI测试）。我认为这可能与事实有关，它必须是表单数据，而Java对此却很奇怪？ idk，请帮助，我很害怕。

已经尝试将请求正文设置为一个长字符串，而不是将所有内容添加到JSONObject中，但这仍然行不通

        URL obj = new URL("https://login.salesforce.com/services/oauth2/token");
        HttpsURLConnection con = (HttpsURLConnection) obj.openConnection();
        con.setDoOutput(true);
        con.setDoInput(true);
        con.setRequestMethod("POST");
        con.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

        JSONObject body = new JSONObject();
        body.put("grant_type", "password");
        body.put("client_id", "***");
        body.put("client_secret", "***");
        body.put("username", "[e-mail]");
        body.put("password", "***");
//        String jsonInputString = "{ grant_type: 'password', client_id: '***', client_secret: '***', password: '***', username: '[e-mail]'";

        System.out.println(body.toString());

        OutputStreamWriter wr = new OutputStreamWriter(con.getOutputStream());
        wr.write(body.toString());
        wr.flush();

        int httpResult = con.getResponseCode();
        InputStream inputStream;
        if (200 <= httpResult && httpResult <= 299) {
            inputStream = con.getInputStream();
        } else {
            inputStream = con.getErrorStream();
        }

        BufferedReader in = new BufferedReader(
                new InputStreamReader(inputStream));

        StringBuilder response = new StringBuilder();
        String currentLine;

        while ((currentLine = in.readLine()) != null)
            response.append(currentLine);

        in.close();


        System.out.println(response.toString());
        System.out.println(httpResult);

        driver.get("https://na85.lightning.force.com/lightning/setup/SetupOneHome/home");

我得到这个：

{"password":"***","grant_type":"password","client_secret":"***","client_id":"***","username":"[e-mail]"}
{"error":"unsupported_grant_type","error_description":"grant type not supported"}
400

最佳答案

没有正确编码我的表单值。通过执行类似以下操作来修复：

StringBuilder sb = new StringBuilder("grant_type=password");
sb.append("&client_id=").append(URLEncoder.encode("client_id__shhhh, "UTF-8"));
sb.append("&client_secret=").append(URLEncoder.encode("secret shhhhh", "UTF-8"));