我正在用java編寫簡單,不復雜的web服務器代碼。它似乎完成了,但我不太確定如何測試它。有人能指出我正確的方向嗎?所有的編碼都完成了,我只需要測試代碼。我試着從終端運行它,然後用指定的端口連接到本地主機,但我只能得到404 NOT FOUND。我重申,我不認爲這是代碼的問題,但我猜測測試驅動器代碼的方法。想法?How-to Test /「Drive」HttpRequest.java(Web Server)?
import java.io.*;
import java.net.*;
import java.util.*;
final class HttpRequest implements Runnable {
final static String CRLF = "\r\n";
Socket socket;
// Constructor
public HttpRequest(Socket socket) throws Exception {
this.socket = socket;
}
// Implement the run() method of the Runnable interface.
public void run() {
try {
processRequest();
} catch (Exception e) {
System.out.println(e);
}
}
private static void sendBytes(FileInputStream fis, OutputStream os)
throws Exception {
// Construct a 1K buffer to hold bytes on their way to the socket.
byte[] buffer = new byte[1024];
int bytes = 0;
// Copy requested file into the socket's output stream.
while((bytes = fis.read(buffer)) != -1) {
os.write(buffer, 0, bytes);
}
}
private static String contentType(String fileName) {
if(fileName.endsWith(".htm") || fileName.endsWith(".html")) {
return "text/html";
}
if(fileName.endsWith(".jpeg") || fileName.endsWith(".jpg")) {
return "image/jpeg";
}
if(fileName.endsWith(".gif")) {
return "image/gif";
}
return "application/octet-stream";
}
private void processRequest() throws Exception {
// Get a reference to the socket's input and output streams.
InputStream is = socket.getInputStream();
DataOutputStream os = new DataOutputStream(socket.getOutputStream());
// Set up input stream filters.
BufferedReader br = new BufferedReader(new InputStreamReader(is));
// Get the request line of the HTTP request message.
String requestLine = new String(br.readLine());
// Display the request line.
System.out.println();
System.out.println(requestLine);
// Get and display the header lines.
String headerLine = null;
while ((headerLine = br.readLine()).length() != 0) {
System.out.println(headerLine);
}
// Extract the filename from the request line.
StringTokenizer tokens = new StringTokenizer(requestLine);
tokens.nextToken(); // skip over the method, which should be "GET"
String fileName = tokens.nextToken();
// Prepend a "." so that file request is within the current directory.
fileName = "." + fileName;
// Open the requested file.
FileInputStream fis = null;
boolean fileExists = true;
try {
fis = new FileInputStream(fileName);
} catch (FileNotFoundException e) {
fileExists = false;
}
// Construct the response message.
String statusLine = null;
String contentTypeLine = null;
String entityBody = null;
if (fileExists) {
statusLine = "200 OK" + CRLF;
contentTypeLine = "Content-type: " +
contentType(fileName) + CRLF;
} else {
statusLine = "404 NOT FOUND" + CRLF;
contentTypeLine = "Content Not Found!" + CRLF;
entityBody = "<HTML>" +
"<HEAD><TITLE>Not Found</TITLE></HEAD>" +
"<BODY>Not Found</BODY></HTML>";
}
// Send the status line.
os.writeBytes(statusLine);
// Send the content type line.
os.writeBytes(contentTypeLine);
// Send a blank line to indicate the end of the header lines.
os.writeBytes(CRLF);
// Send the entity body.
if (fileExists) {
sendBytes(fis, os);
fis.close();
} else {
os.writeBytes("File DNE: Content Not Found!");
}
// Close streams and socket.
os.close();
br.close();
socket.close();
}
public static void main(String[] args) throws Exception {
final ServerSocket ss = new ServerSocket(8080);
while (true)
new HttpRequest(ss.accept()).run();
}
}
解決方案:
解決。事實證明,以測試它,你需要做的是:
1)從終端按通常運行程序,
2)地方,你想嘗試檢索文件(可以說 「example.html的」)在單獨的終端到同一文件夾作爲您的.java文件(S),
3),運行命令$ wget的本地主機:PORT/FILE.EXTENSION
(我使用的端口8080這裏,所以$ wget的本地主機:8080/example.html的)
您現在應該看到,在文件夾中當前是從一個HTML的響應文件「200 OK發送wget命令「或」404文件不是服務器「,以及如果前者爲真的文件內容。
我過於複雜了,如評論/回覆......但它已完成。 猜測和檢查ftw。
當你試圖編寫自己的HTTP服務器時,有什麼特別的原因,當時還有很多其他合適的,成熟的,穩定的,經過充分測試的解決方案?考慮一下像http://www.and.org/texts/server-http - 你準備好處理這一切嗎?對於Java,考慮類似[Jetty](http://www.eclipse.org/jetty/) - 一種可嵌入到JVM中的Web服務器,並且可以配置爲完成您想要的操作。 – ziesemer 2012-02-20 03:34:40
這只是我正在上課的一個小項目。這不應該是任何複雜的。功能正常。 – user1034868 2012-02-20 03:36:53
我很難想象有人可以編寫程序但無法弄清楚如何測試的情況。 – 2012-02-20 03:40:34