{"id":1049,"date":"2021-03-08T16:29:49","date_gmt":"2021-03-08T08:29:49","guid":{"rendered":"https:\/\/www.52dixiaowo.com\/java\/?p=1049"},"modified":"2021-03-17T11:04:45","modified_gmt":"2021-03-17T03:04:45","slug":"javax-servlet%e6%8e%a5%e5%8f%a3","status":"publish","type":"post","link":"https:\/\/www.52dixiaowo.com\/java\/post-1049.html","title":{"rendered":"javax.servlet\u63a5\u53e3"},"content":{"rendered":"\n<h5>servlet\u662f\u4ec0\u4e48\uff1f<\/h5>\n\n\n\n<ul><li>\u5b98\u65b9\u7ed9\u51fa\u7684servlet\u662fweb\u5e95\u5c42\u7684\u63a5\u53e3\uff0c\u662f\u5b9e\u73b0\u63a5\u6536\u8bf7\u6c42\uff0c\u548c\u54cd\u5e94\u4e0d\u53ef\u7f3a\u5c11\u7684\u3002<\/li><li>\u5e7f\u4e49\u4e0a\uff0c\u6211\u4eec\u5e38\u8bf4\u7684servlet\u4e00\u822c\u6307\u76f4\u63a5\u6216\u95f4\u63a5\u5b9e\u73b0servlet\u63a5\u53e3\u7684\u7c7b\u3002<\/li><\/ul>\n\n\n\n<h5>1.servlet\u9700\u8981\u5bfc\u5165\u7684jar\u5305\uff1f<\/h5>\n\n\n\n<ul><li>servlet-api\uff08\u6b64jar\u5305\u5728tomcat\/bin\u76ee\u5f55\u4e0b\uff0c\u624b\u52a8\u4e0b\u8f7d\u53ef\u4ee5\u53bbmaven\u4e2d\u592e\u4ed3\u5e93\uff09<\/li><li>\u4e86\u89e3servlet-api\u5305\u76844\u90e8\u5206<ul><li>javax.servlet\uff0c\u5b9a\u4e49\u4e86\u5f00\u53d1\u4e0e\u534f\u8bae\u7684Servlet\u65e0\u5173\u7684\u63a5\u53e3\u548c\u7c7b<\/li><li>javax.servlet.http\uff0c\u5b9a\u4e49\u4e86servlet\u7684\u63a5\u53e3\u548c\u7c7b<\/li><li>javax.servlet.annotation\uff0c\u5b9a\u4e49\u4e869\u4e2a\u6ce8\u89e3\u548c2\u4e2a\u679a\u4e3e<\/li><li>javax.servlet.descriptor\uff0c\u5b9a\u4e49\u4e86\u7f16\u7a0b\u65b9\u5f0f\u8bbf\u95eeWeb\u5e94\u7528\u914d\u7f6e\u4fe1\u606f\u7684\u7c7b<\/li><\/ul><\/li><\/ul>\n\n\n\n<h5>2.servlet\u7684\u63a5\u53e3\u65b9\u6cd5\u4e0e\u751f\u547d\u5468\u671f<\/h5>\n\n\n\n<ul><li>public void init(ServletConfig config)\uff1a\u521d\u59cb\u5316<\/li><li>public void service(ServletRequest req, ServletResponse res)\uff1a\u670d\u52a1\u65b9\u6cd5<\/li><li>public void destroy()\uff1a\u9500\u6bc1<\/li><li>public ServletConfig getServletConfig()\uff1a\u8fd4\u56de\u914d\u7f6e\u4fe1\u606f<\/li><li>public String getServletInfo()\uff1a\u8fd4\u56deServlet\u7684\u4fe1\u606f<\/li><li>\u751f\u547d\u5468\u671f\uff1ainit()\uff0cservice()\uff0cdestroy()\u4e09\u4e2a\u65b9\u6cd5\u662f\u751f\u547d\u5468\u671f<\/li><\/ul>\n\n\n\n<h4 class=\"has-text-align-center\">\u4e0b\u9762\u662f\u5173\u4e8eservlet\u5b9e\u73b0\u7c7b\u7684\u4e00\u4e9b\u77e5\u8bc6<\/h4>\n\n\n\n<h5>3.\u52a0\u8f7d\u4e0e\u5b9e\u4f8b\u5316<\/h5>\n\n\n\n<ul><li>\u5bf9\u6bcf\u4e2aServlet\uff0c\u4f7f\u7528Class.forName()\u5bf9\u5176\u52a0\u8f7d\u5e76\u5b9e\u4f8b\u5316\uff0c\u5fc5\u987b\u6709\u65e0\u53c2\u6784\u9020<\/li><li>\u9700\u8981\u65f6\uff0c\u5bb9\u5668\u4f1a\u81ea\u52a8\u5b9e\u4f8b\u5316\u5bf9\u8c61<\/li><\/ul>\n\n\n\n<h5>4.servlet\u63a5\u53e3\u76842\u4e2a\u5b9e\u73b0\u7c7b\u4e0e\u81ea\u5b9a\u4e49\u5b9e\u73b0\u7c7b<\/h5>\n\n\n\n<ul><li>\u9ed8\u8ba4\u7684\u5b9e\u73b0\u7c7b\u6709GenericServlet\u548cHttpServlet<ul><li>\u5173\u7cfb\uff0cHttpServlet\u7ee7\u627f\u4e86GenericServlet<\/li><\/ul><\/li><li>\u81ea\u5b9a\u4e49<ul><li>\u7ee7\u627fGenericServlet\u7c7b\uff0c\u65e0\u9ed8\u8ba4\u7684service()\u65b9\u6cd5\uff08\u4e0d\u5e38\u7528\uff09<ul><li>\u8be5\u7c7b\u5b9e\u73b0\u4e86ServletConfig\u63a5\u53e3<\/li><li>\u589e\u52a0\u4e86\u51e0\u4e2a\u652f\u6301\u65e5\u5fd7\u7684\u65b9\u6cd5<\/li><\/ul><\/li><li>\u7ee7\u627fHttpServlet\u7c7b\uff0c\u6709\u9ed8\u8ba4\u7684\u6267\u884c\u65b9\u6cd5\uff08\u5e38\u7528\uff09<\/li><\/ul><\/li><\/ul>\n\n\n\n<h5>5.servlet\u4e2d\u7684doGet()\u548cdoPost()\u4ee5\u53caservice()\u65b9\u6cd5\u89e3\u91ca<\/h5>\n\n\n\n<ul><li>doGet()\u63a5\u6536get\u8bf7\u6c42\uff0c\u5e76\u505a\u51fa\u54cd\u5e94<\/li><li>doPost()\u63a5\u6536post\u8bf7\u6c42\uff0c\u5e76\u505a\u51fa\u54cd\u5e94<\/li><li>service()\u81ea\u52a8\u68c0\u6d4b\u7528\u6237\u7684\u8bf7\u6c42\u65b9\u5f0f\uff0c\u5e76\u8c03\u7528doGet()\u6216doPost()<ul><li>\u5982\u679c\u660e\u786e\u77e5\u9053\u8bf7\u6c42\u65b9\u5f0f\uff0c\u5199\u524d2\u79cd\u4e4b\u4e00\uff0c\u4e0d\u77e5\u9053\u76f4\u63a5\u5199service()<\/li><\/ul><\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>servlet\u662f\u4ec0\u4e48\uff1f \u5b98\u65b9\u7ed9\u51fa\u7684servlet\u662fweb\u5e95\u5c42\u7684\u63a5\u53e3\uff0c\u662f\u5b9e\u73b0\u63a5\u6536\u8bf7\u6c42\uff0c\u548c\u54cd\u5e94\u4e0d\u53ef\u7f3a\u5c11\u7684\u3002 \u5e7f\u4e49\u4e0a&hellip; 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