[英]map file directory from a java server to local machine
我創建了一個Java服務器應用程序,它將接收GET請求並將文件返回到瀏覽器。 文件也使用標題中的“ content-disposition:attachment”下載到目錄中。但這僅作為文件下載,我想作為文件夾下載並將其映射到本地目錄。 例如localhost:8080 / xyz.jpg會給您一個圖像。但是localhost:8080 / src / xyz.jpg應該被下標為src文件夾,其中包含圖像,例如:downloads / src / xyz.jpg。 目前,如果我這樣做,它將僅作為文件下載。 既然你們問了。這是我使用的示例代碼:)。
import java.io.*;
import java.net.*;
import java.util.*;
public class myHTTPServer extends Thread {
static final String HTML_START =
"<html>" +
"<title>HTTP Server in java</title>" +
"<body>";
static final String HTML_END =
"</body>" +
"</html>";
Socket connectedClient = null;
BufferedReader inFromClient = null;
DataOutputStream outToClient = null;
public myHTTPServer(Socket client) {
connectedClient = client;
}
public void run() {
try {
System.out.println( "The Client "+
connectedClient.getInetAddress() + ":" + connectedClient.getPort() + " is connected");
inFromClient = new BufferedReader(new InputStreamReader (connectedClient.getInputStream()));
outToClient = new DataOutputStream(connectedClient.getOutputStream());
String requestString = inFromClient.readLine();
String headerLine = requestString;
StringTokenizer tokenizer = new StringTokenizer(headerLine);
String httpMethod = tokenizer.nextToken();
String httpQueryString = tokenizer.nextToken();
StringBuffer responseBuffer = new StringBuffer();
responseBuffer.append("<b> This is the HTTP Server Home Page.... </b><BR>");
responseBuffer.append("The HTTP Client request is ....<BR>");
System.out.println("The HTTP request string is ....");
while (inFromClient.ready())
{
// Read the HTTP complete HTTP Query
responseBuffer.append(requestString + "<BR>");
System.out.println(requestString);
requestString = inFromClient.readLine();
}
if (httpMethod.equals("GET")) {
if (httpQueryString.equals("/")) {
// The default home page
sendResponse(200, responseBuffer.toString(), false);
} else {
//This is interpreted as a file name
String fileName = httpQueryString.replaceFirst("/", "");
fileName = URLDecoder.decode(fileName);
if (new File(fileName).isFile()){
sendResponse(200, fileName, true);
}
else {
sendResponse(404, "<b>The Requested resource not found ...." +
"Usage: http://127.0.0.1:5000 or http://127.0.0.1:5000/</b>", false);
}
}
}
else sendResponse(404, "<b>The Requested resource not found ...." +
"Usage: http://127.0.0.1:5000 or http://127.0.0.1:5000/</b>", false);
} catch (Exception e) {
e.printStackTrace();
}
}
public void sendResponse (int statusCode, String responseString, boolean isFile) throws Exception {
String statusLine = null;
String serverdetails = "Server: Java HTTPServer";
String contentLengthLine = null;
String fileName = null;
String contentTypeLine = "Content-Type: text/html" + "\r\n";
String Content_disposition="Content-Disposition: attachment; filename='src/fname.ext'";
FileInputStream fin = null;
if (statusCode == 200)
statusLine = "HTTP/1.1 200 OK" + "\r\n";
else
statusLine = "HTTP/1.1 404 Not Found" + "\r\n";
if (isFile) {
fileName = responseString;
fin = new FileInputStream(fileName);
contentLengthLine = "Content-Length: " + Integer.toString(fin.available()) + "\r\n";
if (!fileName.endsWith(".htm") && !fileName.endsWith(".html"))
contentTypeLine = "Content-Type: \r\n";
}
else {
responseString = myHTTPServer.HTML_START + responseString + myHTTPServer.HTML_END;
contentLengthLine = "Content-Length: " + responseString.length() + "\r\n";
}
outToClient.writeBytes(statusLine);
outToClient.writeBytes(serverdetails);
outToClient.writeBytes(contentTypeLine);
outToClient.writeBytes(contentLengthLine);
outToClient.writeBytes(Content_disposition);
outToClient.writeBytes("Connection: close\r\n");
outToClient.writeBytes("\r\n");
if (isFile) sendFile(fin, outToClient);
else outToClient.writeBytes(responseString);
outToClient.close();
}
public void sendFile (FileInputStream fin, DataOutputStream out) throws Exception {
byte[] buffer = new byte[1024] ;
int bytesRead;
while ((bytesRead = fin.read(buffer)) != -1 ) {
out.write(buffer, 0, bytesRead);
}
fin.close();
}
public static void main (String args[]) throws Exception {
ServerSocket Server = new ServerSocket (5000, 10, InetAddress.getByName("127.0.0.1"));
System.out.println ("TCPServer Waiting for client on port 5000");
while(true) {
Socket connected = Server.accept();
(new myHTTPServer(connected)).start();
}
}
}
您無法使用HTTP
協議和常規瀏覽器來執行此操作,文件夾沒有MIME類型。 您的瀏覽器只能下載文件。
如果要通過HTTP
執行此操作:
選項1:生成一個“ zip”文件(或其他使文件夾樹打包為單個文件的格式),該文件包含該文件夾樹並將其發送到瀏覽器。
選項2:開發一個自定義客戶端程序,該程序能夠解釋它從服務器獲得的響應,並在本地文件系統上創建相應的文件夾。
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.