如何将嵌入式文档从Mongo DB导出到Java中的Excel工作表

Question

MongoDB中的架构：

{ “名称”：“ Kamala”， “流量”：[  {     “ Date”：“ 2018-08-03”，     “ New”：“ set”，      “表格”：{       “ y”：“ 1”，       “ d”：“ 3”       “ p”：“ 3”         }     } ] }

在Java中

String db = "Database";
 String col = "col";
 String Host="localhost";
 String Port="27017";
 String fileName = "D:/File/sample.xls";

 String Query = "C:\\Program Files\\MongoDB\\Server\\3.4\\bin\\mongoexport.exe --host " + Host + " --port " + Port + " --db " + db + " --collection " + col + " --type=xls--fields Name,Flows, --out " + fileName + "";

 try {
     System.out.println(Query);

     StringTokenizer st = new StringTokenizer(Query);
     String[] Queryarray = new String[st.countTokens()];
     for (int i = 0; st.hasMoreTokens(); i++)
         Queryarray[i] = st.nextToken();

     ProcessBuilder processBuilder = new ProcessBuilder(Queryarray);
     processBuilder.redirectErrorStream(true);

     Process process = processBuilder.start();
     BufferedReader processOutput = new BufferedReader(new InputStreamReader(process.getInputStream()));

     String data = "";
     while ((data = processOutput.readLine()) != null) {
         System.out.println(data);
     }
  } catch (Exception e) {
     e.printStackTrace();
 }

}

我尝试了这段代码，但是整个文档都存储在一个单元格中（在excel中），但是，我试图以这种类型（名称，日期，新建，表格）存储该文档