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我正在尝试使用抛出 java.io.EOFException 的 java 代码调用 Web 服务：对于大块数据，响应在 0 字节后结束流。

相同的 Web 服务调用在 Postman REST 客户端中有效，但 Java 代码会引发错误并且无法获取 Web 服务响应。有人可以帮我吗？

以下是供参考的代码片段：

        String output;          
        URL url = new URL(wsUrl);             //wsUrl is a web service URL

        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestMethod("GET");
        String authorization = "**************" + ":" + "*********";
        String basicAuth = "Basic " + java.util
                                          .Base64
                                          .getEncoder()
                                          .encodeToString(authorization.getBytes());
        conn.setRequestProperty("Authorization", basicAuth);
        conn.setRequestProperty("Accept", "application/json");
        if (conn.getResponseCode() != 200) {
            throw new RuntimeException("Failed : HTTP error code : " + conn.getResponseCode());
        }
        BufferedReader br = new BufferedReader(new InputStreamReader((conn.getInputStream())));
        System.out.println("Output from Server .... \n");
        String jsonstring = new String();
        while ((output = br.readLine()) != null) {
           System.out.println(output);
        }
        conn.disconnect();
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