本篇文章为大家展示了怎么在java中通过调用微信接口实现一个网页分享功能，内容简明扼要并且容易理解，绝对能使你眼前一亮，通过这篇文章的详细介绍希望你能有所收获。
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一、微信util类
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") ;
}
}
} 注意上面HttpInvokeUtil.httpGet()是httpclint这个可以自己去写，只要能发请求就行，
二、controller层
//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");
}
}三、自定义的返回值类-WConfigResp
@Data
public class WConfigResp extends BaseModel{
private String appid ;
private Long timestamp ;
private String nonceStr;
private String signature ;
}上述内容就是怎么在java中通过调用微信接口实现一个网页分享功能，你们学到知识或技能了吗？如果还想学到更多技能或者丰富自己的知识储备，欢迎关注创新互联行业资讯频道。
