\u4e3a\u4e86\u4f7f\u7b2c\u4e09\u65b9\u5f00\u53d1\u8005\u80fd\u591f\u4e3a\u7528\u6237\u63d0\u4f9b\u66f4\u591a\u66f4\u6709\u4ef7\u503c\u7684\u4e2a\u6027\u5316\u670d\u52a1\uff0c\u5fae\u4fe1\u516c\u4f17\u5e73\u53f0\u5f00\u653e\u4e86\u8bb8\u591a\u63a5\u53e3\uff0c\u5305\u62ec\u81ea\u5b9a\u4e49\u83dc\u5355\u63a5\u53e3\u3001\u5ba2\u670d\u63a5\u53e3\u3001\u83b7\u53d6\u7528\u6237\u4fe1\u606f\u63a5\u53e3\u3001\u7528\u6237\u5206\u7ec4\u63a5\u53e3\u3001\u7fa4\u53d1\u63a5\u53e3\u7b49\uff0c\u5f00\u53d1\u8005\u5728\u8c03\u7528\u8fd9\u4e9b\u63a5\u53e3\u65f6\uff0c\u90fd\u9700\u8981\u4f20\u5165\u4e00\u4e2a\u76f8\u540c\u7684\u53c2\u6570access_token\uff0c\u5b83\u662f\u516c\u4f17\u8d26\u53f7\u7684\u5168\u5c40\u552f\u4e00\u7968\u636e\uff0c\u5b83\u662f\u63a5\u53e3\u8bbf\u95ee\u51ed\u8bc1\u3002<\/p>\n
access_token\u7684\u6709\u6548\u671f\u662f7200\u79d2\uff08\u4e24\u5c0f\u65f6\uff09\uff0c\u5728\u6709\u6548\u671f\u5185\uff0c\u53ef\u4ee5\u4e00\u76f4\u4f7f\u7528\uff0c\u53ea\u6709\u5f53access_token\u8fc7\u671f\u65f6\uff0c\u624d\u9700\u8981\u518d\u6b21\u8c03\u7528\u63a5\u53e3\u83b7\u53d6access_token\u3002\u5728\u7406\u60f3\u60c5\u51b5\u4e0b\uff0c\u4e00\u4e2a7×24\u5c0f\u65f6\u8fd0\u884c\u7684\u7cfb\u7edf\uff0c\u6bcf\u5929\u53ea\u9700\u8981\u83b7\u53d612\u6b21access_token\uff0c\u5373\u6bcf2\u5c0f\u65f6\u83b7\u53d6\u4e00\u6b21\u3002\u5982\u679c\u5728\u6709\u6548\u671f\u5185\uff0c\u518d\u6b21\u83b7\u53d6access_token\uff0c\u90a3\u4e48\u4e0a\u4e00\u6b21\u83b7\u53d6\u7684access_token\u5c06\u5931\u6548\u3002<\/p>\n
\u76ee\u524d\uff0c\u83b7\u53d6access_token\u63a5\u53e3\u7684\u8c03\u7528\u9891\u7387\u9650\u5236\u4e3a2000\u6b21\/\u5929\uff0c\u5982\u679c\u6bcf\u6b21\u53d1\u9001\u5ba2\u670d\u6d88\u606f\u3001\u83b7\u53d6\u7528\u6237\u4fe1\u606f\u3001\u7fa4\u53d1\u6d88\u606f\u4e4b\u524d\u90fd\u8981\u5148\u8c03\u7528\u83b7\u53d6access_token\u63a5\u53e3\u5f97\u5230\u63a5\u53e3\u8bbf\u95ee\u51ed\u8bc1\uff0c\u8fd9\u663e\u7136\u662f\u4e0d\u5408\u7406\u7684\uff0c\u4e00\u65b9\u9762\u4f1a\u66f4\u8017\u65f6\uff08\u591a\u4e86\u4e00\u6b21\u63a5\u53e3\u8c03\u7528\u64cd\u4f5c\uff09\uff0c\u53e6\u4e00\u65b9\u97622000\u6b21\/\u5929\u7684\u8c03\u7528\u9650\u5236\u6050\u6015\u4e5f\u4e0d\u591f\u7528\u3002\u56e0\u6b64\uff0c\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u5c06\u83b7\u53d6\u5230\u7684access_token\u5b58\u50a8\u8d77\u6765\uff0c\u7136\u540e\u5b9a\u671f\u8c03\u7528access_token\u63a5\u53e3\u66f4\u65b0\u5b83\uff0c\u4ee5\u4fdd\u8bc1\u968f\u65f6\u53d6\u51fa\u7684access_token\u90fd\u662f\u6709\u6548\u7684\u3002<\/p>\n
\u4e0b\u9762\u5c06\u4e3a\u5927\u5bb6\u4ecb\u7ecd\u5982\u4f55\u5b9a\u65f6\u83b7\u53d6\u5e76\u5b58\u50a8access_token\u3002\u8bf7\u6ce8\u610f\uff1a\u8fd9\u4e0d\u662f\u4e00\u7bc7\u8bb2\u89e3\u5982\u4f55\u8c03\u7528\u63a5\u53e3\u83b7\u53d6access_token\u7684\u6587\u7ae0\uff0c\u5173\u4e8eaccess_token\u7684\u83b7\u53d6\uff0c\u8bf7\u53c2\u8003\u6587\u7ae0 \u300a\u5fae\u4fe1\u516c\u4f17\u5e10\u53f7\u5f00\u53d1\u6559\u7a0b\u7b2c14\u7bc7-\u81ea\u5b9a\u4e49\u83dc\u5355\u7684\u521b\u5efa\u53ca\u83dc\u5355\u4e8b\u4ef6\u54cd\u5e94\u300b\u3002<\/p>\n
\u5728\u52a8\u624b\u524d\u5148\u6765\u7b80\u5355\u5206\u6790\u4e00\u4e0b\uff0c\u6211\u4eec\u8981\u89e3\u51b3\u7684\u65e0\u975e\u662f\u5982\u4e0b\u4e24\u4e2a\u95ee\u9898\uff1a<\/p>\n
1.\u5982\u4f55\u5b9a\u65f6\u83b7\u53d6access_token\uff1f<\/p>\n
\u5728Java\u4e2d\uff0c\u5982\u679c\u8981\u5b9a\u65f6\u6267\u884c\u67d0\u9879\u4efb\u52a1\uff0c\u9700\u8981\u7528\u5230java.util.Timer\u7c7b\uff0c\u5bf9\u4e8e\u559c\u6b22\u4f7f\u7528\u6846\u67b6\u7684\u670b\u53cb\uff0c\u53ef\u4ee5\u91c7\u7528 \u5f00\u6e90\u7684\u4efb\u52a1\u8c03\u5ea6\u6846\u67b6quartz\uff0cSpring\u6846\u67b6\u4e5f\u652f\u6301quartz\u3002\u9664\u6b64\u8fd9\u5916\uff0c\u8fd8\u6709\u4e00\u79cd\u65b9\u6cd5\u5c31\u662f\u542f\u52a8\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u5728\u7ebf\u7a0b\u7684run()\u65b9\u6cd5\u4e2d\u5199\u4e00\u4e2a\u6b7b\u5faa\u73af\uff0c\u7136\u540e\u4f7f\u7528Thread.sleep()\u6765\u4fdd\u8bc1\u7ebf\u7a0b\u5b9a\u65f6\u6267\u884c\u67d0\u9879\u4efb\u52a1\u3002<\/p>\n
2.\u5c06access_token\u4fdd\u5b58\u5728\u54ea\uff1f<\/p>\n
\u5bf9\u4e8eaccess_token\u7684\u5b58\u50a8\uff0c\u53ef\u4ee5\u8003\u8651\u5b58\u50a8\u5728\u6587\u4ef6\u3001\u6570\u636e\u5e93\u6216\u5185\u5b58\u4e2d\u3002\u5177\u4f53\u91c7\u7528\u54ea\u79cd\u5b58\u50a8\u65b9\u5f0f\uff0c\u9700\u8981\u6839\u636e\u9879\u76ee\u5b9e\u9645\u60c5\u51b5\u800c\u5b9a\u3002\u5982\u679c\u53ea\u6709\u4e00\u53f0\u670d\u52a1\u5668\uff0c\u76f4\u63a5\u5c06access_token\u5b58\u50a8\u5728\u5185\u5b58\u4e2d\u662f\u6700\u7b80\u4fbf\u6709\u6548\u7684\u65b9\u5f0f\u3002<\/p>\n
\u5728\u672c\u6587\u4e2d\uff0c\u7b14\u8005\u5c06\u6f14\u793a\u7684\u5b9a\u671f\u83b7\u53d6\u5e76\u5b58\u50a8access_token\u7684\u6d41\u7a0b\u4e3a\uff1aWeb\u670d\u52a1\u5668\u542f\u52a8\u65f6\u5c31\u52a0\u8f7d\u4e00\u4e2aServlet\uff0c\u5728Servlet\u7684init()\u65b9\u6cd5\u4e2d\u542f\u52a8\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u5728\u7ebf\u7a0b\u7684run()\u65b9\u6cd5\u4e2d\u901a\u8fc7\u6b7b\u5faa\u73af+Thread.sleep()\u7684\u65b9\u5f0f\u5b9a\u671f\u83b7\u53d6access_token\uff0c\u7136\u540e\u5c06\u83b7\u53d6\u5230\u7684access_token\u4fdd\u5b58\u5728public static\u4fee\u9970\u7684\u53d8\u91cf\u4e2d\u3002<\/p>\n
\u5728\u5de5\u7a0b\u4e2d\u521b\u5efa\u4e00\u4e2aInitServlet\u7c7b\uff0c\u8be5\u7c7b\u7684\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
package org.liufeng.weixin.servlet; \r\n \r\nimport javax.servlet.ServletException; \r\nimport javax.servlet.http.HttpServlet; \r\nimport org.liufeng.weixin.thread.TokenThread; \r\nimport org.liufeng.weixin.util.WeixinUtil; \r\nimport org.slf4j.Logger; \r\nimport org.slf4j.LoggerFactory; \r\n \r\n\/** \r\n * \u521d\u59cb\u5316servlet \r\n * \r\n * @author liuyq \r\n * @date 2013-05-02 \r\n *\/ \r\npublic class InitServlet extends HttpServlet { \r\n private static final long serialVersionUID = 1L; \r\n private static Logger log = LoggerFactory.getLogger(WeixinUtil.class); \r\n \r\n public void init() throws ServletException { \r\n \/\/ \u83b7\u53d6web.xml\u4e2d\u914d\u7f6e\u7684\u53c2\u6570 \r\n TokenThread.appid = getInitParameter(\"appid\"); \r\n TokenThread.appsecret = getInitParameter(\"appsecret\"); \r\n \r\n log.info(\"weixin api appid:{}\", TokenThread.appid); \r\n log.info(\"weixin api appsecret:{}\", TokenThread.appsecret); \r\n \r\n \/\/ \u672a\u914d\u7f6eappid\u3001appsecret\u65f6\u7ed9\u51fa\u63d0\u793a \r\n if (\"\".equals(TokenThread.appid) || \"\".equals(TokenThread.appsecret)) { \r\n log.error(\"appid and appsecret configuration error, please check carefully.\"); \r\n } else { \r\n \/\/ \u542f\u52a8\u5b9a\u65f6\u83b7\u53d6access_token\u7684\u7ebf\u7a0b \r\n new Thread(new TokenThread()).start(); \r\n } \r\n } \r\n}<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4ece\u4e0a\u9762\u7684\u4ee3\u7801\u53ef\u4ee5\u770b\u51fa\uff0cInitServlet\u7c7b\u53ea\u91cd\u5199\u4e86init()\u65b9\u6cd5\uff0c\u5e76\u6ca1\u6709\u91cd\u5199doGet()\u548cdoPost()\u4e24\u4e2a\u65b9\u6cd5\uff0c\u56e0\u4e3a\u6211\u4eec\u5e76\u4e0d\u6253\u7b97\u8ba9InitServlet\u6765\u5904\u7406\u8bbf\u95ee\u8bf7\u6c42\u3002init()\u65b9\u6cd5\u7684\u5b9e\u73b0\u4e5f\u6bd4\u8f83\u7b80\u5355\uff0c\u5148\u83b7\u53d6\u5728web.xml\u4e2d\u914d\u7f6e\u7684\u53c2\u6570appid\u548cappsecret\uff0c\u518d\u542f\u52a8\u7ebf\u7a0bTokenThread\u5b9a\u65f6\u83b7\u53d6access_token\u3002<\/p>\n
InitServlet\u5728web.xml\u4e2d\u7684\u914d\u7f6e\u5982\u4e0b\uff1a<\/p>\n
<?xml version=\"1.0\" encoding=\"UTF-8\"?> \r\n<web-app>http:\/\/java.sun.com\/xml\/ns\/javaee\/web-app_2_5.xsd\"> \r\n \r\n <servlet> \r\n <servlet-name>initServlet<\/servlet-name> \r\n <servlet-class> \r\n org.liufeng.weixin.servlet.InitServlet \r\n <\/servlet-class> \r\n <!-- \u914d\u7f6e\u83b7\u53d6access_token\u6240\u9700\u53c2\u6570appid\u548cappsecret --> \r\n <init-param> \r\n <param-name>appid<\/param-name> \r\n <param-value>wx617a123bb8bc99cd<\/param-value> \r\n <\/init-param> \r\n <init-param> \r\n <param-name>appsecret<\/param-name> \r\n <param-value>4d82cbbbb08714c12345b62d7hn3dcb8<\/param-value> \r\n <\/init-param> \r\n <load-on-startup>0<\/load-on-startup> \r\n <\/servlet> \r\n \r\n <welcome-file-list> \r\n <welcome-file>index.jsp<\/welcome-file> \r\n <\/welcome-file-list> \r\n<\/web-app><\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
InitServlet\u5728web.xml\u4e2d\u7684\u914d\u7f6e\u4e0e\u666e\u901aServlet\u7684\u914d\u7f6e\u6709\u51e0\u70b9\u533a\u522b\uff1a1\uff09\u901a\u8fc7\u914d\u7f6e \u5411Servlet\u4e2d\u4f20\u5165\u53c2\u6570\uff1b2\uff09\u901a\u8fc7\u914d\u7f6e \u4f7f\u5f97Web\u670d\u52a1\u5668\u542f\u52a8\u65f6\u5c31\u52a0\u8f7d\u8be5Servlet\uff1b3\uff09\u6ca1\u6709\u914d\u7f6e \uff0c\u56e0\u4e3aInitServlet\u5e76\u4e0d\u5bf9\u5916\u63d0\u4f9b\u8bbf\u95ee\u3002 <\/p>\n
TokenThread\u7684\u6e90\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
package org.liufeng.weixin.thread; \r\n \r\nimport org.liufeng.weixin.pojo.AccessToken; \r\nimport org.liufeng.weixin.util.WeixinUtil; \r\nimport org.slf4j.Logger; \r\nimport org.slf4j.LoggerFactory; \r\n \r\n\/** \r\n * \u5b9a\u65f6\u83b7\u53d6\u5fae\u4fe1access_token\u7684\u7ebf\u7a0b \r\n * \r\n * @author liuyq \r\n * @date 2013-05-02 \r\n *\/ \r\npublic class TokenThread implements Runnable { \r\n private static Logger log = LoggerFactory.getLogger(TokenThread.class); \r\n \/\/ \u7b2c\u4e09\u65b9\u7528\u6237\u552f\u4e00\u51ed\u8bc1 \r\n public static String appid = \"\"; \r\n \/\/ \u7b2c\u4e09\u65b9\u7528\u6237\u552f\u4e00\u51ed\u8bc1\u5bc6\u94a5 \r\n public static String appsecret = \"\"; \r\n public static AccessToken accessToken = null; \r\n \r\n public void run() { \r\n while (true) { \r\n try { \r\n accessToken = WeixinUtil.getAccessToken(appid, appsecret); \r\n if (null != accessToken) { \r\n log.info(\"\u83b7\u53d6access_token\u6210\u529f\uff0c\u6709\u6548\u65f6\u957f{}\u79d2 token:{}\", accessToken.getExpiresIn(), accessToken.getToken()); \r\n \/\/ \u4f11\u77207000\u79d2 \r\n Thread.sleep((accessToken.getExpiresIn() - 200) * 1000); \r\n } else { \r\n \/\/ \u5982\u679caccess_token\u4e3anull\uff0c60\u79d2\u540e\u518d\u83b7\u53d6 \r\n Thread.sleep(60 * 1000); \r\n } \r\n } catch (InterruptedException e) { \r\n try { \r\n Thread.sleep(60 * 1000); \r\n } catch (InterruptedException e1) { \r\n log.error(\"{}\", e1); \r\n } \r\n log.error(\"{}\", e); \r\n } \r\n } \r\n } \r\n}<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4ee3\u7801\u4e2d\u7684\u7b2c23\u884c\u901a\u8fc7while(true){}\u6784\u9020\u4e86\u4e00\u4e2a\u6b7b\u5faa\u73af\uff08\u6c38\u4e45\u6267\u884c\uff09\uff1b\u7b2c25\u884c\u8c03\u7528\u516c\u4f17\u5e73\u53f0\u63a5\u53e3\u83b7\u53d6access_token\uff1b\u7b2c29\u884c\u8ba9\u7ebf\u7a0b\u4f11\u77207000\u79d2\u518d\u8fd0\u884c\uff0c\u5373\u6bcf\u96947000\u79d2\u83b7\u53d6\u4e00\u6b21access_token\uff0c\u4fdd\u8bc1access_token\u6c38\u4e0d\u5931\u6548\u3002\u5728\u9879\u76ee\u4e2d\u7684\u5176\u4ed6\u7c7b\uff0c\u53ef\u4ee5\u901a\u8fc7\u8c03\u7528 TokenThread.accessToken.getToken() \u6765\u5f97\u5230\u63a5\u53e3\u8bbf\u95ee\u51ed\u8bc1access_token\u3002\u5728\u672c\u5730\u90e8\u7f72\u8fd0\u884c\u8be5\u7a0b\u5e8f\uff0cTomcat\u542f\u52a8\u5b8c\u6210\u540e\u5c31\u4f1a\u5728\u63a7\u5236\u53f0\u663e\u793a\u5982\u4e0b\u65e5\u5fd7\uff1a<\/p>\n
[INFO ] weixin api appid:wx617a123bb8bc99cd \r\n[INFO ] weixin api appsecret:4d82cbbbb08714c12345b62d7hn3dcb8 \r\n[INFO ] \u83b7\u53d6access_token\u6210\u529f\uff0c\u6709\u6548\u65f6\u957f7200\u79d2 token:sFopJ9lMmLl4u-ad61ojKpS0TolhN2s3SnHoI2Mh5GgdiYb35i-7DG2T2CDyQKMe<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4e3a\u4e86\u80fd\u591f\u76f4\u89c2\u770b\u5230\u5b9a\u671f\u83b7\u53d6access_token\u7684\u6548\u679c\uff0c\u53ef\u4ee5\u8bd5\u7740\u5c06TokenThread\u91cc\u7684\u7ebf\u7a0b\u4f11\u7720\u65f6\u95f4\u4fee\u6539\u4e3a30\u79d2\u621660\u79d2\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662f\u5fae\u4fe1\u516c\u4f17\u5e73\u53f0\u5f00\u53d1\u4fdd\u8bc1access_token\u957f\u671f\u6709\u6548\u7684\u65b9\u6cd5\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
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\u521d\u59cb\u5316servlet * * @author liuyq * @date 2013-05-02 *\/ public class InitServlet extends HttpServlet { private static final long serialVersionUID = 1L; private static Logger log = LoggerFactory.getLogger(WeixinUtil.class); public void init() throws ServletException { \/\/ \u83b7\u53d6web.xml\u4e2d\u914d\u7f6e\u7684\u53c2\u6570 TokenThread.appid = getInitParameter(“appid”); TokenThread.appsecret = getInitParameter(“appsecret”); log.info(“weixin api appid:{}”, TokenThread.appid); log.info(“weixin api appsecret:{}”, TokenThread.appsecret); \/\/ \u672a\u914d\u7f6eappid\u3001appsecret\u65f6\u7ed9\u51fa\u63d0\u793a if (“”.equals(TokenThread.appid) || “”.equals(TokenThread.appsecret)) { log.error(“appid and appsecret configuration error, please check carefully.”); } else { \/\/ \u542f\u52a8\u5b9a\u65f6\u83b7\u53d6access_token\u7684\u7ebf\u7a0b new Thread(new TokenThread()).start(); } } } \u767b\u5f55\u540e\u590d\u5236 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