JsTicketApi.java
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/**
* Copyright (c) 2011-2015, Unas 小强哥 (unas@qq.com).
* <p/>
* Licensed under the Apache License, Version 2.0 (the "License");
*/
package com.jfinal.weixin.sdk.api;
import com.jfinal.kit.StrKit;
import com.jfinal.weixin.sdk.cache.IAccessTokenCache;
import com.jfinal.weixin.sdk.kit.ParaMap;
import com.jfinal.weixin.sdk.utils.HttpUtils;
import com.jfinal.weixin.sdk.utils.RetryUtils;
import java.util.concurrent.Callable;
/**
*
* 生成签名之前必须先了解一下jsapi_ticket，jsapi_ticket是公众号用于调用微信JS接口的临时票据
* https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=ACCESS_TOKEN&type=jsapi
*
* 微信卡券接口签名凭证api_ticket
* https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=ACCESS_TOKEN&type=wx_card
*/
public class JsTicketApi {
private static String apiUrl = "https://api.weixin.qq.com/cgi-bin/ticket/getticket";
static IAccessTokenCache accessTokenCache = ApiConfigKit.getAccessTokenCache();
/**
* JSApi的类型
*
* jsapi: 用于分享等js-api
*
* wx_card：用于卡券接口签名凭证api_ticket
*
*/
public enum JsApiType {
jsapi, wx_card
}
/**
*
* http GET请求获得jsapi_ticket（有效期7200秒，开发者必须在自己的服务全局缓存jsapi_ticket）
*
* @param jsApiType jsApi类型
* @return JsTicket
*/
public static JsTicket getTicket(JsApiType jsApiType) {
String access_token = AccessTokenApi.getAccessTokenStr();
String appId = ApiConfigKit.getApiConfig().getAppId();
String key = appId + ':' + jsApiType.name();
final ParaMap pm = ParaMap.create("access_token", access_token).put("type", jsApiType.name());
// 2016.07.21修改By L.cm 为了更加方便扩展
String jsTicketJson = accessTokenCache.get(key);
JsTicket jsTicket = null;
if (StrKit.notBlank(jsTicketJson)) {
jsTicket = new JsTicket(jsTicketJson);
}
if (null == jsTicket || !jsTicket.isAvailable()) {
// 最多三次请求
jsTicket = RetryUtils.retryOnException(3, new Callable<JsTicket>() {
@Override
public JsTicket call() throws Exception {
return new JsTicket(HttpUtils.get(apiUrl, pm.getData()));
}
});
if (null != jsApiType) {
accessTokenCache.set(key, jsTicket.getCacheJson());
}
}
return jsTicket;
}
}