H5网页跳转微信小程序
获取scheme码
该接口用于获取小程序 scheme 码，适用于短信、邮件、外部网页、微信内等拉起小程序的业务场景。目前仅针对国内非个人主体的小程序开放，详见获取 URL scheme。
效果：https://www.youlingrc.com/minishare.html
项目地址：https://github.com/yusheng9/openwxchat
H5：index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>优领用工-我要招聘</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<style type="text/css">
html, body {
height: 100%;
margin: 0;
padding: 0;
}
.page {
background: linear-gradient(to bottom, #28AC86 50%, #DBEAE7 50%);
width: 100%;
height: 100vh;
overflow: hidden;
position: relative;
}
.page .main{
background: url('https://img.youlingrc.com/images/20231018142538.png') no-repeat center;
background-size: contain;
width: 100%;
height: 100vh;
}
.btn{
width: 80%;
height: 60px;
background: #28AC86;
color: white;
position: absolute;
left: 10%;
bottom: 8%;
font-size: 2.1em;
display: flex;
align-items: center;
justify-content: center;
border-radius: 20px;
box-shadow: 5px 6px 16px rgba(0, 0, 0, 0.3);
}
</style>
</head>
<body>
<div class="page">
<div class="main">
<div class="btn">我要招聘</div>
</div>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
<script>
$(function(){
let openlink = '';
$.ajax({
url: 'http://127.0.0.1:8080/wchat/api/generatescheme',
type: 'POST', // 或者 'GET'，根据您的需求
data: JSON.stringify({
path: "pages/home/home",
query: "source=8"
}),
contentType: 'application/json',
success: function (res) {
// 请求成功时的处理逻辑
console.log('请求成功', res);
if (res.code === "20000") {
let data = res.content
if (data.openlink){
openlink = data.openlink
}
}
},
error: function (xhr, status, error) {
// 请求失败时的处理逻辑
console.log('请求失败', status, error);
}
});
$(".btn").click(function () {
// 检测用户代理字符串
var userAgent = navigator.userAgent;
console.log('userAgent',userAgent)
// 定义PC浏览器的关键词
var pcKeywords = ["Windows", "Macintosh"];
// 检查用户代理是否包含PC关键词
var isPC = pcKeywords.some(function (keyword) {
return userAgent.indexOf(keyword) !== -1;
});
// 如果是PC浏览器，显示提示消息
if (isPC) {
alert("请使用手机浏览器打开。");
return
}
window.location.href = openlink
});
})
</script>
</body>
</html>
java后端服务：
WChatUtil.java
package com.example.openwxchat.utils; import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.JSONObject; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpPost; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.HttpClients; import org.apache.http.util.EntityUtils; import org.springframework.stereotype.Component; import java.io.IOException; @Component public class WChatUtil { //凭证有效时间，单位：秒。目前是7200秒之内的值。 private static Integer expiresIn = 7200; private final static String APPID = "wx9e6939****aadf0d"; // 你的小程序App ID private final static String APPSECRET = "4fc41066df*********ad68124ee39fd"; // 你的小程序App Secret // 存储AccessToken和其有效期的变量 private static String accessToken; private static long expireTime; // 过期时间戳，单位：秒 /** * 获取微信小程序的AccessToken。 * 如果AccessToken尚未获取或已过期，则会向微信服务器发起请求获取新的AccessToken。 * * @return 微信小程序AccessToken */ public static String getAccessToken() { // 如果AccessToken为空或已过期，则重新获取 if (accessToken == null || System.currentTimeMillis() > expireTime * 1000) { refreshAccessToken(); } return accessToken; } /** * 刷新AccessToken，向微信服务器发送请求获取新的AccessToken。 */ private static void refreshAccessToken() { // 构建请求URL String url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + APPID + "&secret=" + APPSECRET; // 使用HttpClient发送POST请求 HttpClient httpClient = HttpClients.createDefault(); HttpPost httpPost = new HttpPost(url); try { HttpResponse response = httpClient.execute(httpPost); String responseJson = EntityUtils.toString(response.getEntity()); // 使用FastJSON解析JSON响应 JSONObject jsonObject = JSONObject.parseObject(responseJson); // 从JSON响应中获取AccessToken accessToken = jsonObject.getString("access_token"); // 计算过期时间戳 expireTime = System.currentTimeMillis() + (expiresIn - 60) * 1000; // 提前60秒过期，避免刚好过期时的并发问题 } catch (IOException e) { // 处理异常 } } //获取scheme public static String generateScheme(String jump_wxa) { String accessToken = getAccessToken(); // 拼接URL String url = "https://api.weixin.qq.com/wxa/generatescheme?access_token=" + accessToken; try { HttpClient client = HttpClients.createDefault(); // 构建一个Client HttpPost post = new HttpPost(url); // 构建一个Post请求 post.setHeader("Content-Type", "application/json"); // 设置请求头为JSON // 创建一个 JSON 格式的请求主体 JSONObject jsonRequest = new JSONObject(); jsonRequest.put("jump_wxa", JSON.parseObject(jump_wxa)); StringEntity input = new StringEntity(jsonRequest.toString(), "UTF-8"); post.setEntity(input); HttpResponse response = client.execute(post); // 提交POST请求 HttpEntity result = response.getEntity(); // 拿到返回的HttpResponse的"实体" String content = EntityUtils.toString(result); // 返回JSON格式的响应字符串 return content; } catch (Exception e) { e.printStackTrace(); // 返回错误信息 return "{\"error\": \"" + e.getMessage() + "\"}"; } } }
ApiController.java
package com.example.openwxchat.controller; import com.alibaba.fastjson.JSONObject; import com.example.openwxchat.param.GenerateschemeParam; import com.example.openwxchat.utils.WChatUtil; import org.springframework.http.ResponseEntity; import org.springframework.web.bind.annotation.PostMapping; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RequestMapping("/wchat/api") @RestController public class ApiController { @PostMapping("/generatescheme") public Object generatescheme(@RequestBody GenerateschemeParam param){ JSONObject jump_wxa_json = new JSONObject(); jump_wxa_json.put("path",param.getPath()); jump_wxa_json.put("query",param.getQuery()); String scheme = WChatUtil.generateScheme(JSONObject.toJSONString(jump_wxa_json)); return ResponseEntity.ok(scheme); } }
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