我正在尝试从 Java(通过 HTTP)向某个网站提交表单,但是在阅读响应时,我看不到我的预期。我具体做什么:首先,我在浏览器中打开网站,手动填写表格并提交。在 Chrome 中,我可以看到通过网络传输的数据,即:
Request URL:http://wizzair.com/en-GB/Select
Request Method:POST
Status Code:200 OK
Request Headersview source
Accept:text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Charset:ISO-8859-1,utf-8;q=0.7,*;q=0.3
Accept-Encoding:gzip,deflate,sdch
Accept-Language:en-US,en;q=0.8
Cache-Control:max-age=0
Connection:keep-alive
Content-Length:1061
Content-Type:application/x-www-form-urlencoded
Cookie:WRUID=0; ASP.NET_SessionId=3e3ahach1d34oyhtoqfshxhe; Culture=en-GB; __utma=17431487.361991764.1292186668.1354138010.1354651562.81; __utmb=17431487.9.9.1354652614319; __utmc=17431487; __utmz=17431487.1319145359.34.18.utmcsr=google|utmccn=(organic)|utmcmd=organic|utmctr=wizz
Host:wizzair.com
Origin:http://wizzair.com
Referer:http://wizzair.com/en-GB/Select
User-Agent:Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.91 Safari/537.11
Form Dataview URL encoded
__EVENTTARGET:HeaderControlGroupRibbonSelectView_AvailabilitySearchInputRibbonSelectView_ButtonSubmit
__VIEWSTATE:/wEPDwUBMGRkNSMYF94e4mXCiiJGEJbRixyidoa2QXSambTT2mm6cLs=
HeaderControlGroupRibbonSelectView$AvailabilitySearchInputRibbonSelectView$OriginStation:EIN
HeaderControlGroupRibbonSelectView$AvailabilitySearchInputRibbonSelectView$DestinationStation:OTP
HeaderControlGroupRibbonSelectView$AvailabilitySearchInputRibbonSelectView$DepartureDate:02/02/2013
HeaderControlGroupRibbonSelectView$AvailabilitySearchInputRibbonSelectView$ReturnDate:05/02/2013
HeaderControlGroupRibbonSelectView$AvailabilitySearchInputRibbonSelectView$PaxCountADT:1
HeaderControlGroupRibbonSelectView$AvailabilitySearchInputRibbonSelectView$PaxCountCHD:0
HeaderControlGroupRibbonSelectView$AvailabilitySearchInputRibbonSelectView$PaxCountINFANT:0
HeaderControlGroupRibbonSelectView$AvailabilitySearchInputRibbonSelectView$BaggageCount:0
HeaderControlGroupRibbonSelectView$AvailabilitySearchInputRibbonSelectView$ButtonSubmit:Search
所以我尝试模拟来自Java程序的相同请求,即:
public void doSubmit(String url, Map<String, String> data) throws Exception {
URL siteUrl = new URL(url);
HttpURLConnection conn = (HttpURLConnection) siteUrl.openConnection();
conn.setRequestMethod("POST");
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setRequestProperty("Cookie", "WRUID=0; ASP.NET_SessionId=3e3ahach1d34oyhtoqfshxhe; Culture=en-GB; __utma=17431487.361991764.1292186668.1354138010.1354651562.81; __utmb=17431487.9.9.1354652614319; __utmc=17431487; __utmz=17431487.1319145359.34.18.utmcsr=google|utmccn=(organic)|utmcmd=organic|utmctr=wizz");
DataOutputStream out = new DataOutputStream(conn.getOutputStream());
Set keys = data.keySet();
Iterator keyIter = keys.iterator();
String content = "";
for(int i=0; keyIter.hasNext(); i++) {
Object key = keyIter.next();
if(i!=0) {
content += "&";
}
content += key + "=" + URLEncoder.encode(data.get(key), "UTF-8");
}
System.out.println(content);
out.writeBytes(content);
out.flush();
out.close();
BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String line = "";
while((line=in.readLine())!=null) {
System.out.println(line);
}
in.close();
}
.... 我使用以下参数调用它,如上面的 HTTP 表单数据所示:
String url = "http://wizzair.com/en-GB/Select";
Map<String, String> data = new TreeMap<String, String>();
data.put("__EVENTTARGET", "HeaderControlGroupRibbonSelectView_AvailabilitySearchInputRibbonSelectView_ButtonSubmit");
data.put("__VIEWSTATE", "/wEPDwUBMGRkNSMYF94e4mXCiiJGEJbRixyidoa2QXSambTT2mm6cLs=\n"+
"HeaderControlGroupRibbonSelectView$AvailabilitySearchInputRibbonSelectView$OriginStation:EIN\n"+
"HeaderControlGroupRibbonSelectView$AvailabilitySearchInputRibbonSelectView$DestinationStation:OTP\n"+
"HeaderControlGroupRibbonSelectView$AvailabilitySearchInputRibbonSelectView$DepartureDate:02/02/2013\n"+
"HeaderControlGroupRibbonSelectView$AvailabilitySearchInputRibbonSelectView$ReturnDate:05/02/2013\n"+
"HeaderControlGroupRibbonSelectView$AvailabilitySearchInputRibbonSelectView$PaxCountADT:1\n"+
"HeaderControlGroupRibbonSelectView$AvailabilitySearchInputRibbonSelectView$PaxCountCHD:0\n"+
"HeaderControlGroupRibbonSelectView$AvailabilitySearchInputRibbonSelectView$PaxCountINFANT:0\n"+
"HeaderControlGroupRibbonSelectView$AvailabilitySearchInputRibbonSelectView$BaggageCount:0\n"+
"HeaderControlGroupRibbonSelectView$AvailabilitySearchInputRibbonSelectView$ButtonSubmit:Search"
但是,我得到的响应只是来自该网站的通用网页,而不是我预期的答案。我究竟做错了什么 ?
非常感谢, 问候, 索林