如何使用Assembler.ttl在POST HTTP请求上构建Fuseki TDB？(如何通过POST请求发送文件)

Question

https://jena.apache.org/documentation/fuseki2/fuseki-server-protocol.html阅读文档，我们看到我们能够向Fuseki端点发送一个包含汇编程序.ttl定义的POST请求。尽管在尝试时，我的应用程序没有从服务器得到任何响应。

我正在尝试用Java编写以下代码：

/**
     * This Method creates a persistent TDB2 in Fuseki Server by a POST request
     * @param name Name of the DataSet to be Created
     * @throws MalformedURLException 
     * @throws ProtocolException 
     * @throws UnsupportedEncodingException 
     */
    public void createDatasetInFuseki(String name) throws Exception{
        try {
            HttpURLConnection conn = (HttpURLConnection) new URL(server_location + "/$/datasets").openConnection();
            conn.setRequestMethod("POST");
            conn.setDoInput(true);
            conn.setDoOutput(true);
            OutputStream os = conn.getOutputStream();

            File assembler_file = new File("C:\\Users\\Carlos\\Desktop\\fuseki-assembler.ttl");

            BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(os, "UTF-8"));

            try {
                    InputStream fis = new FileInputStream(assembler_file);
                    int content;
                    //Read .ttl content by InputStream
                    while ((content = fis.read()) != -1) {
                            writer.write((char) content); //Write the readed content in http OutPutStream
                    }
            } catch (IOException e) {
                    e.printStackTrace();
            }

            writer.flush();
            writer.close();
            os.close();
            String fuseki_response = conn.getResponseMessage();
            conn.connect();
        }finally {}
    }

如果可能的话，我想知道如何通过Java客户端将文件正确地发布到服务器。

Answer 1

我的错误是在文章格式上。我用这个问题Upload files from Java client to a HTTP server解决了我的问题

通过发布Assembler.ttl，我们可以使用Reasoner编程实例化Fuseki数据集。这使得服务器能够在执行时对包含的数据进行推理。