微信开发之java获取微信timestamp,nonceStr,signature方法

package com.test.util;import java.util.UUID;import java.util.Map;import java.util.HashMap;import java.util.Formatter;import java.security.MessageDigest;import java.security.NoSuchAlgorithmException;import java.io.UnsupportedEncodingException;    public class Sign {    public static void main(String[] args) {        String jsapi_ticket =JsapiTicketUtil.getJSApiTicket();;        // 注意 URL 一定要动态获取，不能 hardcode        String url = "http://www.vxzsk.com/xx/x.do";//url是你请求的一个action或者controller地址，并且方法直接跳转到使用jsapi的jsp界面        Map<String, String> ret = sign(jsapi_ticket, url);        for (Map.Entry entry : ret.entrySet()) {            System.out.println(entry.getKey() + ", " + entry.getValue());        }    };  public static Map<String, String> sign(String jsapi_ticket, String url) {        Map<String, String> ret = new HashMap<String, String>();        String nonce_str = create_nonce_str();        String timestamp = create_timestamp();        String string1;        String signature = "";         //注意这里参数名必须全部小写，且必须有序        string1 = "jsapi_ticket=" + jsapi_ticket +                  "&noncestr=" + nonce_str +                  "&timestamp=" + timestamp +                  "&url=" + url;        System.out.println(string1);         try        {            MessageDigest crypt = MessageDigest.getInstance("SHA-1");            crypt.reset();            crypt.update(string1.getBytes("UTF-8"));            signature = byteToHex(crypt.digest());        }        catch (NoSuchAlgorithmException e)        {            e.printStackTrace();        }        catch (UnsupportedEncodingException e)        {            e.printStackTrace();        }         ret.put("url", url);        ret.put("jsapi_ticket", jsapi_ticket);        ret.put("nonceStr", nonce_str);        ret.put("timestamp", timestamp);        ret.put("signature", signature);         return ret;    }     private static String byteToHex(final byte[] hash) {        Formatter formatter = new Formatter();        for (byte b : hash)        {            formatter.format("%02x", b);        }        String result = formatter.toString();        formatter.close();        return result;    }     private static String create_nonce_str() {        return UUID.randomUUID().toString();    }     private static String create_timestamp() {        return Long.toString(System.currentTimeMillis() / 1000);    }}

package com.test.util;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.net.MalformedURLException;import java.net.URL;import java.net.URLConnection; import net.sf.json.JSONObject;import com.test.weixin.TestAcessToken;/*** * @author V型知识库  www.vxzsk.com * */public class JsapiTicketUtil {         /***     * 模拟get请求     * @param url     * @param charset     * @param timeout     * @return     */     public static String sendGet(String url, String charset, int timeout)      {        String result = "";        try        {          URL u = new URL(url);          try          {            URLConnection conn = u.openConnection();            conn.connect();            conn.setConnectTimeout(timeout);            BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream(), charset));            String line="";            while ((line = in.readLine()) != null)            {                           result = result + line;            }            in.close();          } catch (IOException e) {            return result;          }        }        catch (MalformedURLException e)        {          return result;        }               return result;      }     public static String getAccessToken(){            String appid="你公众号基本设置里的应用id";//应用ID            String appSecret="你公众号基本设置里的应用密钥";//(应用密钥)            String url ="https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid="+appid+"&secret="+appSecret+"";            String backData=TestAcessToken.sendGet(url, "utf-8", 10000);            String accessToken = (String) JSONObject.fromObject(backData).get("access_token");              return accessToken;     }         public static String getJSApiTicket(){         //获取token        String acess_token= JsapiTicketUtil.getAccessToken();        String urlStr = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token="+acess_token+"&type=jsapi";          String backData=TestAcessToken.sendGet(urlStr, "utf-8", 10000);          String ticket = (String) JSONObject.fromObject(backData).get("ticket");          return  ticket;                 }           public static void main(String[] args) {        String jsapiTicket = JsapiTicketUtil.getJSApiTicket();        System.out.println("调用微信jsapi的凭证票为："+jsapiTicket);     } }