[英]Add HTTP header to response in java socket server
我不確定要在何處或使用什么命令將HTTP標頭添加到服務器的響應中。
import java.io.*;
import java.net.*;
import com.sun.net.httpserver.*;
public class Response {
private static final int BUFFER_SIZE = 9999;
Request request;
BufferedOutputStream output;
//constructor para el output
public Response(BufferedOutputStream output){
this.output = output;
}
//Set del request
public void setRequest(Request request){
this.request = request;
}
public void sendResource() throws IOException{
File file = new File(Java_Server.Web_dir,request.getUri());
byte [] bytearray = new byte[(int) file.length()];
FileInputStream file_out = null;
if(file.exists())
file_out = new FileInputStream(file);
else{
String errorMessage = "HTTP/1.1 404 File Not Found\r\n" +
"Content-Type: text/html\r\n" +
"Content-Length: 23\r\n" +
"\r\n" +
"<h1>File Not Found</h1>";
output.write(errorMessage.getBytes());
}
BufferedInputStream bis = new BufferedInputStream(file_out);
try{
bis.read(bytearray,0,bytearray.length);
output.write(bytearray,0 , bytearray.length);
output.flush();
output.close();
return;
}catch (IOException e){
e.printStackTrace();
}
}
內容被傳遞到瀏覽器,但是沒有HTTP標頭,例如,如果發送圖像,則瀏覽器不顯示圖像,而是逐字節顯示。
首選的方法是實現Servlet並在Servlet容器中運行它。 然后,在HttpServletResponse
對象上調用方法setHeader
:
public class ExampleServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException {
response.setHeader("X-Whatever-Header-Name-You-Want", "Value");
}
}
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