绑定域名和引入js的就不说了
废话不说直接上代码
public void share(HttpServletRequest request) throws Exception { StringBuffer homeUrl = request.getRequestURL();
String queryString =request.getQueryString();
if(StringUtils.isNotBlank(queryString)){
homeUrl.append("?").append(queryString);
}
long timestamp = System.currentTimeMillis() / 1000; String nonceStr = UUID.randomUUID().toString(); String signature = SignUtil.getSignature(
weiXinBaseService.getJsTicket(), nonceStr, timestamp,
homeUrl.toString());
logger.info("url="+homeUrl);
logger.info("nonceStr=" + nonceStr);
logger.info("timestamp=" + timestamp);
logger.info("signature=" + signature);
logger.info("appid=" + WebConfig.get("weixin.appid"));
request.setAttribute("appid", WebConfig.get("weixin.appid"));
request.setAttribute("timestamp", timestamp);
request.setAttribute("nonceStr", nonceStr);
request.setAttribute("signature", signature);
}
此方法主要有几个地方需要注意:1.获取的是请求的全路径,如果get请求有跟参数需要做个拼接。要不然签名会有错误。
2.随机数直接通过uuid随机数取的。
3.签名。微信的签名是个挺麻烦的事。但是又是必不可少的。签名代码奉上。
/**
* 获得分享链接的签名。
* @param ticket
* @param nonceStr
* @param timeStamp
* @param url
* @return
* @throws Exception
*/
public static String getSignature(String ticket, String nonceStr, long timeStamp, String url) throws Exception {
String sKey = "jsapi_ticket=" + ticket
+ "&noncestr=" + nonceStr + "×tamp=" + timeStamp
+ "&url=" + url;
return getSignature(sKey);
}
具体签名方法如下
/**
* 验证签名。
*
* @param signature
* @param timestamp
* @param nonce
* @return
*/
public static String getSignature(String sKey) throws Exception {
String ciphertext = null;
MessageDigest md = MessageDigest.getInstance("SHA-1");
byte[] digest = md.digest(sKey.toString().getBytes());
ciphertext = byteToStr(digest);
return ciphertext.toLowerCase();
} /**
* 将字节数组转换为十六进制字符串
*
* @param byteArray
* @return
*/
private static String byteToStr(byte[] byteArray) {
String strDigest = "";
for (int i = 0; i < byteArray.length; i++) {
strDigest += byteToHexStr(byteArray[i]);
}
return strDigest;
}
/**
* 将字节转换为十六进制字符串
*
* @param mByte
* @return
*/
private static String byteToHexStr(byte mByte) {
char[] Digit = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
char[] tempArr = new char[2];
tempArr[0] = Digit[(mByte >>> 4) & 0X0F];
tempArr[1] = Digit[mByte & 0X0F]; String s = new String(tempArr);
return s;
}
前端页面中引入微信js文件并配置config
<script type="text/javascript" src="${pageContext.request.contextPath}/static/js/jweixin-1.0.0.js"></script> <script>
var shareTitle = "法国游已经近在咫尺了,是朋友就帮我一把吧!";
var shareImg = "http://" + domain +"${pageContext.request.contextPath}/static/img/shareImage.jpg"
wx.config({
debug: false, //
appId: '${appid}', // 必填,公众号的唯一标识
timestamp: '${timestamp}', // 必填,生成签名的时间戳
nonceStr: '${nonceStr}', // 必填,生成签名的随机串
signature: '${signature}',// 必填,签名,见附录1
jsApiList: [
'onMenuShareTimeline',
'onMenuShareAppMessage',
'showOptionMenu'
] // 必填,需要使用的JS接口列表,所有JS接口列表见附录2 });
wx.ready(function () {
share();
});
function share(){
wx.showOptionMenu();
wx.onMenuShareTimeline({
title: shareTitle, // 分享标题
link: $("#shareLink").val(), // 分享链接
imgUrl:shareImg,
success: function () { }
});
wx.onMenuShareAppMessage({
title: shareTitle, // 分享标题
link: $("#shareLink").val(), // 分享链接
imgUrl:shareImg,
desc: 'xxx', // 分享描述
success: function () { }
});
}
</script>