如何设置pdf文件路径以从服务器下载文件

Question

我想从服务器下载pdf，我从API响应中获取的文件的路径如下：E：\\ C1MS \\ REPORTS \\ 003315150418.pdf

但是，如何通过提供服务器的IP地址来下载此文件？

服务器的路径是： http : //103.91.100.17 : 8080/creditOneFuelOneApp/

下载文件的代码

public static void DownloadFile(String fileURL, File directory) {
    try {

        FileOutputStream f = new FileOutputStream(directory);
        URL u = new URL(fileURL);
        HttpURLConnection c = (HttpURLConnection) u.openConnection();
        c.setRequestMethod("GET");
        c.setDoOutput(true);
        c.connect();

        InputStream in = c.getInputStream();

        byte[] buffer = new byte[1024];
        int len1 = 0;
        while ((len1 = in.read(buffer)) > 0) {
            f.write(buffer, 0, len1);
        }
        f.close();
    } catch (Exception e) {
        e.printStackTrace();
    }

}

编辑：

http://103.91.100.17:8080/creditOneFuelOneApp/statement

请求

    {
"account_number" : "000584",
"user_type" : "C"
}

响应

{
    "response_code": 0,
    "bill_due_date": "05-Jun-18",
    "last_bill_date": "01-Jun-18",
    "response_desc": "Success",
    "account_name": "Credit One",
    "last_bill_amount": "35083.00",
    "statement_list": [
        {
            "bill_amount": "35083.00",
            "file_location": "",
            "bill_date": "01-Jun-18",
            "due_date": "05-Jun-18"
        },
        {
            "bill_amount": "35083.00",
            "file_location": "E:\\C1MS\\REPORTS\\000584180501.pdf",
            "bill_date": "16-May-18",
            "due_date": "20-May-18"
        },
        {
            "bill_amount": "30083.00",
            "file_location": "E:\\C1MS\\REPORTS\\000584180401.pdf",
            "bill_date": "01-May-18",
            "due_date": "05-May-18"
        },
]

请帮忙。 谢谢。

Answer 1

FileOutputStream f = new FileOutputStream(new File(path + File.separator
                                          + fileName));

您的路径在哪里：

new StringBuilder("E:").append(File.separator)
                       .append("C1MS")
                       .append(File.separator)
                       .append("REPORTS").toString();

和文件名： "003315150418.pdf"

看一下Oracle文档oracle fileupload

Answer 2

你可以做这样的事情。

String server_path = " http://103.91.100.17:8080/creditOneFuelOneApp/";
String server_location = "E:\C1MS\REPORTS\003315150418.pdf";

您还可以动态生成server_location字符串

现在像这样调用您的downloadFile函数

DownloadFile（server_path，server_location）

public static void DownloadFile(String fileURL, File directory) {
    try {

        FileOutputStream f = new FileOutputStream(new File(directory));
        URL u = new URL(fileURL);
      //YOUR OTHER CODE
    }

}