java调用微信接口实现网页分享小功能

 public class ShareConstants { //微信获取ticket的接口 public static final String TICKET_URL_TEST = "https://api.weixin.qq.com/cgi-bin/ticket/getticket" ; public static final String type = "jsapi" ; //微信获取token的接口 public static final String GET_TOKEN_URL = "https://api.weixin.qq.com/cgi-bin/token"; public static final String grant_type = "client_credential" ; }

 public class WeixinUtil { private static Logger logger = LoggerFactory.getLogger(WeixinUtil.class) ; public static boolean signatureCheck(String token,String timeStamp,String nonce,String signature) throws Exception{ List list = new ArrayList(3){ public String toString(){ return this.get(0)+this.get(1)+this.get(2) ; } } ; list.add(token) ; list.add(timeStamp) ; list.add(nonce) ; Collections.sort(list) ; MessageDigest md = MessageDigest.getInstance("SHA-1") ; byte[] digest = md.digest(list.toString().getBytes()) ; String testStr = WeixinUtil.byteArrayToHexString(digest) ; logger.info("token:{},timestamp:{},nonce:{},testStr:{}"); if(testStr.equalsIgnoreCase(signature.toUpperCase())){ return true; }else{ return false ; } } public static String signature(String jsapiTicket,String nonceStr,Long timestamp,String url) throws Exception{ String str = String.format("jsapi_ticket=%s&noncestr=%s×tamp=%d&url=%s", jsapiTicket,nonceStr,timestamp,url) ; logger.info("signature url:{}",str); MessageDigest md = MessageDigest.getInstance("SHA-1") ; byte[] digest = md.digest(str.getBytes()) ; String sigStr = WeixinUtil.byteArrayToHexString(digest) ; return sigStr ; } public static String byteArrayToHexString(byte[] array){ String strDigest = "" ; for(int i = 0 ;i>> 4) & 0X0F] ; ob[1] = Digit[ib &0X0F] ; String s = new String(ob) ; return s ; } public static String getWeiXinShareToken(String appId,String secret) throws Exception{ Map maps = new HashMap() ; maps.put("grant_type", ShareConstants.grant_type) ; maps.put("appid",appId) ; maps.put("secret",secret) ; try{ String result = HttpInvokeUtil.httpGet(ShareConstants.GET_TOKEN_URL,maps) ; JSONObject jsonObject = JSONObject.parseObject(result) ; String access_token = (String) jsonObject.get("access_token") ; Integer expires_in = (Integer) jsonObject.get("expires_in") ; logger.debug("getToken access_token:{},expires_in:{}",access_token,expires_in); if(access_token !=null && expires_in!=null && expires_in==7200) return access_token ; else return null ; }catch (Exception ex){ logger.error("ex:stack:{}",ex.getStackTrace().toString()); throw new Exception("get Token failed"); } } public static String getJsApiTicket(String token) throws Exception{ Map maps = new HashMap() ; maps.put("access_token",token); maps.put("type",ShareConstants.type); try{ String result = HttpInvokeUtil.httpGet(ShareConstants.TICKET_URL_TEST,maps) ; JSONObject jsonObject = JSONObject.parseObject(result) ; Integer errcode = (Integer) jsonObject.get("errcode") ; if(errcode==null || (errcode!=null &&errcode!=0)){ logger.error("get jsapiTicket is failed, errcode:{}",errcode); return null ; }else{ String ticket = (String) jsonObject.get("ticket") ; return ticket ; } }catch (Exception ex){ logger.error("ex.stack:{}",ex.getStackTrace().toString()); throw new Exception("getJsApi Ticket is failed") ; } } }

 //currUrl ==前端想要分享的网页地址 @RequestMapping(value = "/getWConfig", method = RequestMethod.GET) @ResponseBody //@RequiredLogin public FrameResp getWConfig(@Param("currUrl") String currUrl) throws UserException, Exception { if (currUrl == null) { return buildErrorResp(ErrorCodeConst.ERROR_PARAM_ERROR); } logger.info("get the encode currUrl {}", currUrl); String urlTmp = URLDecoder.decode(currUrl, "UTF-8"); logger.info("decode currUrl {}", currUrl); Long timestamp = new Date().getTime() / 1000; String url = urlTmp.split("#")[0]; WConfigResp wConfigResp = new WConfigResp(); //修改为本地加载分享 //shareConfig.getAppId()==自己的appid //shareConfig.getUxinAppSecret()==自己的AppSecret String token = WeixinUtil.getWeiXinShareToken(shareConfig.getAppId(), shareConfig.getUxinAppSecret()); String ticket = WeixinUtil.getJsApiTicket(token); if (ticket == null) { logger.error("get jsApiTicketSec is failed"); throw new Exception("get jsApi is failed"); } wConfigResp.setAppid(shareConfig.getAppId()); wConfigResp.setTimestamp(timestamp); wConfigResp.setNonceStr(RandomStringUtils.random(10, true, true)); logger.info("appid:{},ticket:{},timestamp:{},nonceStr:{},url:{}", shareConfig.getAppId(), ticket, timestamp, wConfigResp.getNonceStr(), url); String signature = WeixinUtil.signature(ticket, wConfigResp.getNonceStr(), wConfigResp.getTimestamp(), url); if (signature != null) { wConfigResp.setSignature(signature); return buildSuccessResp(wConfigResp); } else { logger.error("getWcConfig is failed"); throw new Exception("error getWConfig"); } }

 @Data public class WConfigResp extends BaseModel{ private String appid ; private Long timestamp ; private String nonceStr; private String signature ; }