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

根据微信的官方文档和案例代码，上述三个参数是必须的，而且上述三个参数都是动态获取的，那么接下来，我们根据微信官方文档，用java代码来实现获取timestamp,nonceStr,signature这三个参数，在这里呢只是一个main方法执行打印并输出，这节课不实现把这三个参数传递到网页中并成功调出微信jsapi,下一节课将着重讲解。

Sign代码：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 hardcodeString 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);}}第16行main方法中的一个变量url就是你请求的一个action或者controller地址，并且方法直接跳转到使用jsapi的jsp界面

获取jsapi_ticket工具类代码：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IDString 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tokenString 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");returnticket;}public static void main(String[] args) {String jsapiTicket = JsapiTicketUtil.getJSApiTicket();System.out.println("调用微信jsapi的凭证票为："+jsapiTicket);} }读者可直接把代码复制到myeclipse或者Eclipse中运行main方法即可，但是在这里提示读者JsapiTicketUtil中获取acces_token方法中需要读者自行填写自己的appid和appsecret。以上就是微信开发之java获取微信timestamp,nonceStr,signature方法的详细内容，更多请关注小潘博客其它相关文章！