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標題: 請教關于ruby 實現簡單http server的問題 [打印本頁]

作者: shiwudao 時間: 2013-08-21 18:35
標題: 請教關于ruby 實現簡單http server的問題
用ruby寫個簡單的http 服務器
server = TCPServer.new('localhost',  9000)
  loop {
  client = server.accept()
  while((x = client.gets) != "\r\n")
puts x
  end

  puts "正在處理數據..."+ "\r\n"

  $result= "<root><data>123</data></root>"
  headers = ["HTTP/1.1 200 OK",
         "Date: Tue, 14 Dec 2010 10:48:45 GMT",
         "Server: Ruby",
         "Content-Type: text/xml;charset=gb2312",
         "Content-Length: #{$result.bytesize}\r\n\r\n"].join("\r\n")
client.puts headers
client.puts $result

  client.close
  puts "Request Handled"

如果用瀏覽器訪問 http://localhost:9000的話是可以正確顯示結果xml.
但是如果網頁中用jqury的ajax訪問的話，IE/FF/Chrome都一樣，一直報錯，即始終走到error:那個分支，
用firebug看了下，貌似ajax調用只是返回了response的header部分，response本身為空的，有大仙知道原因嗎？

$(document).ready(function(){
$("#btn").click(function(){
$.ajax({
      url:"http://localhost:9000",
      type:"GET",
      dataType:"xml",
async:true,
      timeout: 2000,
      error: function(xml, status, err){
         alert('Error loading XML document'+xml+status+err);
      },
      success: function(xml){
         $(xml).find("data").each(function(i){
alert($(this).text());

         });
      }
});

});

});

作者: shiwudao 時間: 2013-08-21 22:20
ok, I got the reason. AJAX should only access the URL in the same domain. I put the AJAX code in a local HTML, hence can't access the server.

updated server code as below, and put the AJAX html under "/", the access point it "http://localhost:9000/ajax.html"

require 'webrick'

$mydata="<root><data>test1</data><data>test2</data></root>"
class MyServlet < WEBrick::HTTPServlet::AbstractServlet
def do_GET(request, response)
response.status = 200
response.content_type = "text/xml"
response.body = $mydata
end
end

server = WEBrick::HTTPServer.new(

ort => 9000,

ocumentRoot=>Dir::pwd)
server.mount "/data", MyServlet
trap("INT"

{ server.shutdown }
server.start

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