{"id":622,"date":"2015-05-06T10:12:33","date_gmt":"2015-05-06T02:12:33","guid":{"rendered":"https:\/\/ai.zhousir.top\/?p=622"},"modified":"2026-08-18T11:16:10","modified_gmt":"2026-08-18T03:16:10","slug":"servlet%e6%a6%82%e8%bf%b0","status":"publish","type":"post","link":"https:\/\/ai.zhousir.top\/?p=622","title":{"rendered":"Servlet\u6982\u8ff0"},"content":{"rendered":"
\n

Servlet \u662f\u4e00\u79cd\u72ec\u7acb\u4e8e\u5e73\u53f0\u548c\u534f\u8bae\u7684\u670d\u52a1\u5668\u7aef Java \u5e94\u7528\u7a0b\u5e8f<\/strong>\uff0c\u7528\u6765\u751f\u6210\u52a8\u6001 Web \u9875\u9762\u3002\u5b83\u4e0d\u4ece\u547d\u4ee4\u884c\u542f\u52a8\uff0c\u800c\u662f\u7531 Web \u670d\u52a1\u5668\u52a0\u8f7d\uff1b\u8fd9\u53f0\u670d\u52a1\u5668\u5fc5\u987b\u5305\u542b\u652f\u6301 Servlet \u7684 Java \u865a\u62df\u673a\u3002<\/p>\n

\u548c Applet \u4e00\u6837\uff0cServlet \u6ca1\u6709 main()<\/code>\uff0c\u751f\u547d\u5468\u671f\u7531\u5bb9\u5668\u8c03\u7528\uff1b\u548c JSP \u76f8\u6bd4\uff0cJSP \u53ea\u662f\u628a\u9759\u6001 HTML \u5199\u8d77\u6765\u66f4\u65b9\u4fbf\uff0c\u672c\u8d28\u80fd\u529b\u5e76\u6ca1\u6709\u8d85\u51fa Servlet\u3002<\/p>\n

<\/p>\n

\u5199 HTTP Servlet \u65f6\uff0c\u901a\u5e38\u6269\u5c55 HttpServlet<\/code>\uff0c\u8986\u76d6 doGet()<\/code> \/ doPost()<\/code>\uff0c\u5e76\u5728 init()<\/code> \/ destroy()<\/code> \u91cc\u7ba1\u7406\u4e00\u6b21\u6027\u8d44\u6e90\u3002<\/p>\n

\u4e00\u3001\u6982\u8ff0<\/h2>\n

\"\"<\/a><\/p>\n

Servlet \u4f4d\u4e8e Web \u670d\u52a1\u5668\u5185\u90e8\u3002\u5bb9\u5668\u8d1f\u8d23\u88c5\u5165\u3001\u521d\u59cb\u5316\u3001\u628a\u8bf7\u6c42\u6d3e\u5230\u5bf9\u5e94\u65b9\u6cd5\uff0c\u5e76\u5728\u5378\u8f7d\u65f6\u505a\u6e05\u7406\u3002\u5148\u628a\u5b83\u548c\u666e\u901a Java \u7a0b\u5e8f\u3001Applet\u3001JSP \u653e\u5728\u4e00\u5f20\u8868\u91cc\u5bf9\u7167\u3002<\/p>\n\n\n\n\n\n\n\n\n
\u5bf9\u6bd4\u9879<\/th>\n\u666e\u901a Java \u7a0b\u5e8f<\/th>\nApplet<\/th>\nServlet<\/th>\n<\/tr>\n<\/thead>\n
\u5165\u53e3<\/td>\n\u6709 main()<\/td>\n\u65e0 main()\uff0c\u7531\u6d4f\u89c8\u5668\/\u5bb9\u5668\u8c03\u7528<\/td>\n\u65e0 main()\uff0c\u7531 Servlet \u5bb9\u5668\u8c03\u7528<\/td>\n<\/tr>\n
\u8fd0\u884c\u4f4d\u7f6e<\/td>\n\u672c\u673a\u72ec\u7acb\u8fdb\u7a0b<\/td>\n\u5ba2\u6237\u7aef\uff0c\u968f\u6d4f\u89c8\u5668<\/td>\n\u670d\u52a1\u5668\u7aef<\/td>\n<\/tr>\n
\u56fe\u5f62\u754c\u9762<\/td>\n\u53ef\u9009<\/td>\nAWT\/\u56fe\u5f62\u754c\u9762<\/td>\n\u6ca1\u6709\u56fe\u5f62\u754c\u9762<\/td>\n<\/tr>\n
\u751f\u547d\u5468\u671f<\/td>\n\u81ea\u5df1\u7ba1<\/td>\ninit() \/ destroy()<\/td>\ninit() \/ service() \/ destroy()<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u548c JSP \u7684\u5173\u7cfb<\/h3>\n

JSP\uff08JavaServer Pages\uff09\u628a\u9759\u6001 HTML \u548c\u52a8\u6001\u5185\u5bb9\u6df7\u5728\u4e00\u4e2a\u9875\u9762\u91cc\u5199\u3002\u5b83\u5e76\u6ca1\u6709\u589e\u52a0\u4efb\u4f55\u672c\u8d28\u4e0a\u4e0d\u80fd\u7528 Servlet \u5b9e\u73b0\u7684\u529f\u80fd\uff0c\u53ea\u662f\u4e0d\u5fc5\u518d\u7528 println<\/code> \u8f93\u51fa\u6bcf\u4e00\u884c HTML\u3002\u5185\u5bb9\u548c\u5916\u89c2\u53ef\u4ee5\u5206\u5f00\uff1a\u9875\u9762\u8bbe\u8ba1\u8005\u5199 HTML\uff0c\u7a0b\u5e8f\u5458\u5728\u9884\u7559\u4f4d\u7f6e\u63d2\u5165\u52a8\u6001\u7ed3\u679c\u3002<\/p>\n

\u4e8c\u3001HTTP Servlet \u7f16\u7a0b\u63a5\u53e3<\/h2>\n

\u8981\u521b\u5efa HTTP Servlet\uff0c\u8bf7\u6269\u5c55 javax.servlet.http.HttpServlet<\/code>\u3002\u8fd9\u4e2a\u7c7b\u63d0\u4f9b init()<\/code>\u3001destroy()<\/code>\u3001service()<\/code> \u7b49\u65b9\u6cd5\u3002HTML \u8868\u5355\u63d0\u4ea4\u65f6\uff0c\u4f1a\u6307\u5b9a\u670d\u52a1\u5668\u5e94\u6267\u884c\u54ea\u4e00\u4e2a Servlet\u3002<\/p>\n

1. init()<\/h3>\n

\u5728 Servlet \u7684\u751f\u547d\u671f\u4e2d\uff0c\u53ea\u6267\u884c\u4e00\u6b21<\/strong>\u3002\u53ef\u4ee5\u914d\u7f6e\u6210\u670d\u52a1\u5668\u542f\u52a8\u65f6\u88c5\u5165\uff0c\u6216\u5ba2\u6237\u7b2c\u4e00\u6b21\u8bbf\u95ee\u65f6\u88c5\u5165\u3002\u65e0\u8bba\u6709\u591a\u5c11\u5ba2\u6237\u8bbf\u95ee\uff0c\u90fd\u4e0d\u4f1a\u91cd\u590d\u6267\u884c\u3002<\/p>\n

\u7f3a\u7701\u7684 init()<\/code> \u901a\u5e38\u591f\u7528\u3002\u8986\u76d6\u5b83\u65f6\uff0c\u5178\u578b\u7528\u9014\u662f\u7ba1\u7406\u670d\u52a1\u5668\u7aef\u8d44\u6e90\uff1a\u4e00\u6b21\u6027\u88c5\u5165 GIF \u56fe\u7247\u3001\u521d\u59cb\u5316\u6570\u636e\u5e93\u8fde\u63a5\u3002\u8986\u76d6\u5e26 ServletConfig<\/code> \u53c2\u6570\u7684\u7248\u672c\u65f6\uff0c\u5e94\u8c03\u7528 super.init(config)<\/code>\uff0c\u5426\u5219\u521d\u59cb\u5316\u53c2\u6570\u548c\u914d\u7f6e\u4f1a\u4e22\u3002service()<\/code> \u88ab\u8c03\u7528\u4e4b\u524d\uff0c\u5fc5\u987b\u4fdd\u8bc1 init()<\/code> \u5df2\u7ecf\u5b8c\u6210\u3002<\/p>\n

2. service()<\/h3>\n

service()<\/code> \u662f Servlet \u7684\u6838\u5fc3\u3002\u6bcf\u6b21\u5ba2\u6237\u8bf7\u6c42\u4e00\u4e2a HttpServlet \u5bf9\u8c61\uff0c\u5c31\u4f1a\u8c03\u7528\u5b83\uff0c\u5e76\u4f20\u5165\u8bf7\u6c42\u5bf9\u8c61\u548c\u54cd\u5e94\u5bf9\u8c61\u3002HttpServlet \u91cc\u5df2\u6709\u5b9e\u73b0\uff1a\u7f3a\u7701\u4f1a\u6309 HTTP \u65b9\u6cd5\u5206\u53d1\u5230 doGet()<\/code>\u3001doPost()<\/code> \u7b49\u3002\u4e00\u822c\u4e0d\u5fc5\u8986\u76d6 service()<\/code>\uff0c\u8986\u76d6\u5bf9\u5e94\u7684 do \u65b9\u6cd5\u5373\u53ef\u3002<\/p>\n