web登陸無非就是網頁獲取,cookie 的管理,post和get方式的模擬。 1.網頁內容獲取 1.直接的方式 發送設置cookie: 2.利用的jcookie包(http://jcookie.sourceforge.net/ ) 新的請求,利用上面獲取的cookie: url = new URL("http://www.site.com/"); 3.post方式的模擬 //post信息 BufferedReader br = new BufferedReader(new InputStreamReader(huc.getInputStream())) huc.connect(); String line = br.readLine(); while(line != null){ l System.out.printli(line); line = br.readLine(); }
java.io.InputStream in;
java.net.URL url = new java.net.URL(www.xyz.com/content.html);
java.net.HttpURLConnection connection = (java.net.HttpURLConnection)
url.openConnection();
connection = (java.net.HttpURLConnection) url.openConnection();
//模擬成IE
connection.setRequestProperty("User-Agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows 2000)");
connection.connect();
in = connection.getInputStream();
java.io.BufferedReader breader =
new BufferedReader(new InputStreamReader(in , "GBK"));
String str=breader.readLine());
while(st != null){
System.out.println(str);
str=breader.readLine());
}
2.cookie管理
取得cookie:
HttpURLConnection huc= (HttpURLConnection) url.openConnection();
InputStream is = huc.getInputStream();
// 取得sessionID.
String cookieVal = hc.getHeaderField("Set-Cookie");
String sessionId;
if(cookieVal != null)
{
sessionId = cookieVal.substring(0, cookieVal.indexOf(";"));
}
HttpURLConnection huc= (HttpURLConnection) url.openConnection();
if(sessionId != null)
{
huc.setRequestProperty("Cookie", sessionId);
}
InputStream is = huc.getInputStream();
獲取cookie:
URL url = new URL("http://www.site.com/");
HttpURLConnection huc = (HttpURLConnection) url.openConnection();
huc.connect();
InputStream is = huc.getInputStream();
Client client = new Client();
CookieJar cj = client.getCookies(huc);
huc = (HttpURLConnection) url.openConnection();
client.setCookies(huc, cj);
URL url = new URL("www.xyz.com");
HttpURLConnection huc = (HttpURLConnection) url.openConnection();
//設置允許output
huc.setDoOutput(true);
//設置爲post方式
huc.setRequestMethod("POST");
huc.setRequestProperty("User-Agent","Mozilla/4.7 [en] (Win98; I)");
StringBuffer sb = new StringBuffer();
sb.append("userName="+userNme);
sb.append("&password="+password);
OutputStream os = huc.getOutputStream();
os.write(sb.toString().getBytes("GBK"));
os.close();
os.close();
BufferedReader br = new BufferedReader(new InputStreamReader(huc.getInputStream()))
huc.connect();
String line = br.readLine();
while(line != null){
l
System.out.printli(line);
line = br.readLine();
}