CHPP Development/Java/Login examples

2007-11-07T17:47:15Z

Hybris: update code to handle multiple cookies.

Connecting to the server 
 
 
Step1: Getting the recommended [[server]]

public boolean getRecommendedServer() {
try {
URL url = new URL("http://www.hattrick.org/Common/menu.asp?outputType=XML");
URLConnection connection = url.openConnection();
BufferedReader br = new BufferedReader(
new InputStreamReader(connection.getInputStream()));
String line = "";
while ((line = br.readLine()) != null) {
//do something with the line
//maybe write it into a file
}
//parse the file and get the recommended server
//from the tags <RecommendedURL>www47.hattrick.org</RecommendedURL>
//place it into a variabile named String recommendedURL, for example;
connection.close();
br.close();
} catch (Exception e) {
e.printStackTrace();
return false;
}
return true;
}

Step2: Sign in

public boolean signIn() {
try {
String userName = "myUsername";
String securityCode = "myPass";
String userAgent = "MyAppName/v1.0";
String cookie = "";
URL url = new URL(recommendedURL +
"/common/default.asp?outputType=XML&actionType=login&loginType=CHPP&Loginname=" +
userName + "&readonlypassword=" + securityCode);
URLConnection connection = url.openConnection();
connection.setRequestProperty("User-Agent", userAgent);
connection.connect();
Map<String, List<String>> hm = huc.getHeaderFields();
List<String> cookies = (List<String>)hm.get("Set-Cookie");
for (String elem : cookies) {
cookie += elem.substring(0, elem.indexOf(";")) + ";";
}
BufferedReader br = new BufferedReader(
new InputStreamReader(connection.getInputStream()));
String line = "";
while ((line = br.readLine()) != null) {
//do something with this
//maybe check if login was successful
}
connection.close();
} catch (Exception e) {
e.printStackTrace();
return false;
}
return true;
}

Step3: Download some files that you need

public boolean downloadTeamDetails() {
try {
URL url = new URL(recommendedURL +
"/common/teamDetails.asp?outputType=XML&actionType=view");
URLConnection connection = url.openConnection();
connection.setRequestProperty("User-Agent", userAgent);
connection.setRequestProperty("Cookie", cookie);
BufferedReader br = new BufferedReader(
new InputStreamReader(connection.getInputStream()));
BufferedWriter bw = new BufferedWriter(
new FileWriter("xml\\teamDetails.xml"));
String line = "";
while ((line = br.readLine()) != null) {
bw.write(line + '\n');
}
bw.flush();
br.close();
bw.close();
connection.close();
} catch (Exception e) {
e.printStackTrace();
return false;
}
return true;
}

Step4: Sign out

public boolean signOut() {
try {
URL url = new URL(recURL + "/common/default.asp?outputType=XML&actionType=logout");
URLConnection connection = url.openConnection();
connection.setRequestProperty("User-Agent", userAgent);
connection.setRequestProperty("Cookie", cookie);
connection.connect();
//no need to open input stream, just connect
connection.close();
} catch (Exception e) {
e.printStackTrace();
return false;
}
return true;
}
 

Parsing the XML files can be done the old fashion way, or in a simpler way, with the help of jaxb:
[[http://wiki.hattrick.org/CHPP_Development/Java/JAXB Generating classes with JAXB and automatic parsing]] - it's more complicated at first, but gets easy as you go

[[Category:Programming Languages|Java]]

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CHPP Development/Java/Login examples