{"id":1179,"date":"2021-03-18T18:17:33","date_gmt":"2021-03-18T10:17:33","guid":{"rendered":"https:\/\/www.52dixiaowo.com\/java\/?p=1179"},"modified":"2021-03-18T18:22:20","modified_gmt":"2021-03-18T10:22:20","slug":"servlet%e6%8a%bd%e5%8f%96","status":"publish","type":"post","link":"https:\/\/www.52dixiaowo.com\/java\/post-1179.html","title":{"rendered":"servlet\u62bd\u53d6"},"content":{"rendered":"\n

\u5982\u679c\u6211\u4eec\u4f7f\u7528\u4e86\u9ed8\u8ba4\u7684httpServlet, \u90a3\u4e48\u6bcf\u4e2a\u529f\u80fd\u90fd\u9700\u8981\u4e00\u4e2a servlet , \u5c31\u4f1a\u5bfc\u81f4 servlet \u7684\u6570\u91cf\u5927\u589e<\/p>\n\n\n\n

\u6211\u4eec\u9700\u8981\u628a\u4e00\u4e2a servlet \u5b8c\u6210\u591a\u4e2a\u529f\u80fd, \u5373\u628a\u4e00\u4e2a\u6a21\u5757\u7684\u4ee3\u7801\u5199\u5728\u4e00\u4e2a servlet \u4e2d, \u6bd4\u5982\u7528\u6237\u7684\u589e\u5220\u6539\u67e5\u7b49\u7b49\u7684\u5bf9\u7528\u6237\u64cd\u4f5c, \u53ea\u9700\u8981\u4e00\u4e2a servlet \u6587\u4ef6<\/p>\n\n\n\n

\u5982\u4f55\u62bd\u53d6?<\/h5>\n\n\n\n

\u9996\u5148, httpServlet \u4e2d, \u672c\u8eab\u5c31\u6709\u4e00\u4e2a\u7ee7\u627f\u800c\u6765\u7684 service \u65b9\u6cd5, \u6b64\u65b9\u6cd5\u524d\u9762\u4ecb\u7ecd\u8fc7, \u5b83\u80fd\u591f\u6839\u636e\u7528\u6237\u8bf7\u6c42\u7684\u65b9\u5f0f\u81ea\u52a8\u8c03\u7528doGet\u6216doPost\u5904\u7406\u8bf7\u6c42, \u90a3\u4e48\u6211\u4eec\u53ea\u9700\u8981\u8986\u76d6\u91cd\u5199\u6b64 service \u65b9\u6cd5\u5373\u53ef.<\/p>\n\n\n\n

\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2aServlet\u7ee7\u627f”HttpServlet”,\u8be5\u7c7b\u4e2d\u5305\u542b\u4e86\u5904\u7406http\u534f\u8bae\u7684\u65b9\u6cd5, \u6211\u4eec\u8986\u76d6HttpServlet\u662f\u4fdd\u8bc1\u6211\u4eec\u7684Servlet\u4e5f\u80fd\u5904\u7406http\u8bf7\u6c42<\/p>\n\n\n\n

\u81ea\u5b9a\u4e49\u7684Servlet\u53eb BaseServelt, \u53d6\u8fd9\u4e2a\u540d\u79f0\u662f\u4e3a\u4e86\u6309\u540d\u77e5\u610f, \u8fd9\u4e2a servelt \u662f\u4e3a\u4e86\u5b8c\u6210\u5bf9\u529f\u80fd\u7684\u5206\u53d1, \u5b83\u4e0d\u4f1a\u88ab\u76f4\u63a5\u8bbf\u95ee, \u5b83\u53ea\u662f\u4e3a\u4e86\u88ab\u7ee7\u627f<\/p>\n\n\n\n

\u63a5\u4e0b\u6765, \u6211\u4eec\u5b9a\u4e49\u4e00\u4e2a UserServlet, \u8fd9\u4e2a servlet \u5b8c\u6210\u5bf9\u6574\u4e2a user \u64cd\u4f5c\u7684\u529f\u80fd\u6a21\u5757, \u9700\u8981\u6ce8\u610f:<\/p>\n\n\n\n

UserServlet \u8981\u76d1\u542c\u7684\u8def\u5f84, \u5199\u6210 \/user\/*<\/strong>, \u5e76\u5728userServlet\u4e2d\u5199\u4e0a\u591a\u4e2a\u65b9\u6cd5<\/p>\n\n\n\n

\u5176\u4e2d BaseServlet \u5b8c\u6210\u5bf9\u65b9\u6cd5\u5206\u53d1\u7684\u903b\u8f91\u662f :<\/p>\n\n\n\n

  1. \u83b7\u53d6\u8bf7\u6c42\u8def\u5f84getURI, \u5224\u65ad\u8981\u5bf9 user \u7684\u64cd\u4f5c, \u6bd4\u5982 \/user\/add , \/user\/delete<\/li>
  2. \u622a\u53d6\u65b9\u6cd5\u540d\u79f0lastIndexOf(‘\/’), \u4e5f\u5c31\u662f\u622a\u53d6\u6700\u540e\u4e00\u4e2a\u540d\u79f0, \u5982 add, delete<\/li>
  3. \u901a\u8fc7\u53cd\u5c04this.getClass().getDeclareMethod(name,args), \u83b7\u53d6add,delete \u7684\u65b9\u6cd5\u5bf9\u8c61, <\/li>
  4. \u901a\u8fc7\u65b9\u6cd5\u5bf9\u8c61, \u6267\u884c\u6211\u4eec\u81ea\u5b9a\u4e49\u7684\u65b9\u6cd5, method.setAccessible(true), method.invoke(this,req,resp)<\/li><\/ol>\n\n\n\n

    \u6ce8\u610f : \u81ea\u5b9a\u4e49\u7684servlet\u65b9\u6cd5, \u6700\u597d\u662fpublic, \u5426\u5219\u9700\u8981 getDeclare, \u4ee5\u53ca setAccessible<\/p>\n","protected":false},"excerpt":{"rendered":"

    \u5982\u679c\u6211\u4eec\u4f7f\u7528\u4e86\u9ed8\u8ba4\u7684httpServlet, \u90a3\u4e48\u6bcf\u4e2a\u529f\u80fd\u90fd\u9700\u8981\u4e00\u4e2a servlet , \u5c31\u4f1a\u5bfc\u81f4 servl… \u7ee7\u7eed\u9605\u8bfb servlet\u62bd\u53d6<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[11],"tags":[],"_links":{"self":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts\/1179"}],"collection":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/comments?post=1179"}],"version-history":[{"count":2,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts\/1179\/revisions"}],"predecessor-version":[{"id":1181,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts\/1179\/revisions\/1181"}],"wp:attachment":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/media?parent=1179"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/categories?post=1179"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/tags?post=1179"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}