java调用微信接口实现网页分享小功能-eolink官网

java调用微信接口实现网页分享小功能

本文实例为大家分享了java调用微信接口实现网页分享小功能的具体代码，供大家参考，具体内容如下

// 获取access_token *注意* 经过实际开发测试，微信分享不支持跨域请求，因此获取access_token的请求必须从服务器发起，否则无法获取到access_token所以以下都是服务端操作

微信接口说明参考地址

参考文章：Java微信分享接口开发详解

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&timestamp=%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

strDigest+=byteToHexString(array[i]) ;

}

return strDigest ;

}

public static String byteToHexString(byte ib){

char[] Digit = {'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'} ;

char [] ob = new char[2] ;

ob[0] = Digit[(ib >>> 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 ;

}

strDigest+=byteToHexString(array[i]) ;

}

return strDigest ;

}

public static String byteToHexString(byte ib){

char[] Digit = {'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'} ;

char [] ob = new char[2] ;

ob[0] = Digit[(ib >>> 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 ;

}

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