获取jsapi_ticket跟所需的accessToken

public class ServerRun extends HttpServlet{

private Timer timer = null;
public void init(ServletConfig config) throws ServletException{
super.init(config);
timer = new Timer(true);
timer.schedule(new getTicket(), 5000,3600000 );
}

public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{}
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{}
public void destroy(){}

public static String accessToken(String APP_ID,String APPSECRET) throws IOException {
String url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + APP_ID + "&secret="
+ APPSECRET;
GetMethod get = null;
get = new GetMethod(url);

HttpClient client = new HttpClient();
client.getParams().setParameter("http.protocol.content-charset", "utf-8");
client.getParams().setBooleanParameter("http.protocol.expect-continue", false);
client.getHttpConnectionManager().getParams().setConnectionTimeout(30000);
client.getHttpConnectionManager().getParams().setSoTimeout(30000);

get.addRequestHeader("Content-type", "te|xt/html;charset=UTF-8");

int statusCode = 0;
try {
statusCode = client.executeMethod(get);
} catch (HttpException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
String access_token = "";
if (statusCode == 200) {
InputStream resInputStream = null;
try {
resInputStream = get.getResponseBodyAsStream();
} catch (IOException e) {
e.printStackTrace();
}
BufferedReader reader = new BufferedReader(new InputStreamReader(resInputStream, "utf-8"));
String line;
while ((line = reader.readLine()) != null) {
System.out.println("line:" + line);
JSONObject jsonObject = new JSONObject();
try {
jsonObject = JSONObject.fromObject(line);
access_token = jsonObject.getString("access_token");
} catch (Exception e) {
jsonObject = JSONObject.fromObject(line);
String errcode = jsonObject.getString("errcode");
System.out.println("errcode:" + errcode);
}
}
}
return access_token;

}

public static String getJSApiTicket(String APP_ID,String APPSECRET) throws IOException {
String access_token = ServerRun.accessToken(APP_ID,APPSECRET);
String url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=" + access_token + "&type=jsapi";
GetMethod get = null;
get = new GetMethod(url);
HttpClient client = new HttpClient();
client.getParams().setParameter("http.protocol.content-charset", "utf-8");
client.getParams().setBooleanParameter("http.protocol.expect-continue", false);
client.getHttpConnectionManager().getParams().setConnectionTimeout(30000);
client.getHttpConnectionManager().getParams().setSoTimeout(30000);
get.addRequestHeader("Content-type", "te|xt/html;charset=UTF-8");
int statusCode = 0;
try {
statusCode = client.executeMethod(get);
} catch (HttpException e) {
e.printStackTrace();
}
String ticket = "";
if (statusCode == 200) {
InputStream resInputStream = null;
try {
resInputStream = get.getResponseBodyAsStream();
} catch (IOException e) {
e.printStackTrace();
}
BufferedReader reader = new BufferedReader(new InputStreamReader(resInputStream, "utf-8"));
String line;
while ((line = reader.readLine()) != null) {
System.out.println("line:" + line);
JSONObject jsonObject = new JSONObject();
try {
jsonObject = JSONObject.fromObject(line);
ticket = jsonObject.getString("ticket");
} catch (Exception e) {
jsonObject = JSONObject.fromObject(line);
String errcode = jsonObject.getString("errcode");
System.out.println("errcode:" + errcode);
}
}
}
return ticket;
}
}