{"id":2554,"date":"2022-12-13T17:27:40","date_gmt":"2022-12-13T09:27:40","guid":{"rendered":"https:\/\/qaqaq.top\/?p=2554"},"modified":"2022-12-19T20:48:22","modified_gmt":"2022-12-19T12:48:22","slug":"%e4%b9%a6%e5%9f%8e%e9%a1%b9%e7%9b%ae-%e6%98%be%e7%a4%ba%e7%99%bb%e5%bd%95%e7%9a%84%e7%94%a8%e6%88%b7%e4%bf%a1%e6%81%af%e3%80%81%e4%b9%a6%e5%9f%8e%e9%a1%b9%e7%9b%ae-%e6%b3%a8%e9%94%80%e7%99%bb%e5%bd%95","status":"publish","type":"post","link":"https:\/\/qaqaq.top\/?p=2554","title":{"rendered":"\u4e66\u57ce\u9879\u76ee-\u7b2c\u516d\u9636\u6bb5 \u9a8c\u8bc1\u7801\u7684\u52a0\u5165"},"content":{"rendered":"\n

\u4e66\u57ce\u9879\u76ee-\u663e\u793a\u767b\u5f55\u7684\u7528\u6237\u4fe1\u606f\u3001\u4e66\u57ce\u9879\u76ee-\u6ce8\u9500\u767b\u5f55\u3001\u4e66\u57ce\u9879\u76ee-\u8868\u5355\u91cd\u590d\u63d0\u4ea4\u7684\u4e09\u79cd\u5e38\u89c1\u60c5\u51b5\u3001\u4e66\u57ce\u9879\u76ee-\u9a8c\u8bc1\u7801\u5e95\u5c42\u539f\u7406\u3001\u4e66\u57ce\u9879\u76ee-\u8c37\u6b4c\u9a8c\u8bc1\u7801\u7684\u4f7f\u7528\u3001\u4e66\u57ce\u9879\u76ee-\u628a\u8c37\u6b4c\u9a8c\u8bc1\u7801\u52a0\u5165\u5230\u4e66\u57ce\u4e2d\u4f7f\u7528\u3001\u4e66\u57ce\u9879\u76ee-\u9a8c\u8bc1\u7801\u7684\u5207\u6362<\/p>\n\n\n\n

3\u3001\u9879\u76ee\u7b2c\u516d\u9636\u6bb5<\/h1>\n\n\n\n

3.1\u3001\u767b\u9646—\u663e\u793a\u7528\u6237\u540d<\/h2>\n\n\n\n

UserServlet \u7a0b\u5e8f\u4e2d\u4fdd\u5b58\u7528\u6237\u767b\u5f55\u7684\u4fe1\u606f<\/p>\n\n\n\n

package top.qaqaq.web;\n\nimport jakarta.servlet.ServletException;\nimport jakarta.servlet.http.HttpServletRequest;\nimport jakarta.servlet.http.HttpServletResponse;\nimport top.qaqaq.pojo.User;\nimport top.qaqaq.service.UserService;\nimport top.qaqaq.service.impl.UserServiceImpl;\nimport top.qaqaq.utils.WebUtils;\n\nimport java.io.IOException;\n\nimport static com.google.code.kaptcha.Constants.KAPTCHA_SESSION_KEY;\n\n\/**\n * @author RichieZhang\n * @create 2022-12-10 \u4e0a\u5348 11:26\n *\/\npublic class UserServlet extends BaseServlet {\n\n    private UserService userService = new UserServiceImpl();\n\n    \/**\n     * \u6ce8\u9500\n     * @param req\n     * @param resp\n     * @throws ServletException\n     * @throws IOException\n     *\/\n    protected void logout(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n        \/\/ 1. \u9500\u6bc1Session\u4e2d\u7528\u6237\u767b\u5f55\u7684\u4fe1\u606f\uff08\u6216\u8005\u9500\u6bc1Session\uff09\n        req.getSession().invalidate();\n        \/\/ 2. \u91cd\u5b9a\u5411\u5230\u9996\u9875\uff08\u6216\u767b\u9646\u9875\u9762\uff09\u3002\n        resp.sendRedirect(req.getContextPath());\n    }\n\n    \/**\n     * \u5904\u7406\u767b\u5f55\u7684\u529f\u80fd\n     * @param req\n     * @param resp\n     * @throws ServletException\n     * @throws IOException\n     *\/\n    protected void login(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n        \/\/1. \u83b7\u53d6\u8bf7\u6c42\u53c2\u6570\n        String username = req.getParameter(\"username\");\n        String password = req.getParameter(\"password\");\n        \/\/ \u8c03\u7528 userService.login() \u767b\u5f55\u5904\u7406\u4e1a\u52a1\n        User loginUser = userService.login(new User(null, username, password, null));\n        \/\/ \u5982\u679c\u7b49\u4e8enull\uff0c\u8bf4\u660e\u767b\u5f55 \u5931\u8d25\uff01\n        if (loginUser == null){\n            \/\/ \u628a\u9519\u8bef\u4fe1\u606f\uff0c\u548c\u56de\u663e\u7684\u8868\u5355\u9879\u4fe1\u606f\uff0c\u4fdd\u5b58\u5728Request\u57df\u4e2d\n            req.setAttribute(\"msg\",\"\u7528\u6237\u540d\u6216\u5bc6\u7801\u9519\u8bef\uff01\");\n            req.setAttribute(\"username\", username);\n\n            \/\/ \u8df3\u56de\u767b\u5f55\u9875\u9762\n            req.getRequestDispatcher(\"\/pages\/user\/login.jsp\").forward(req,resp);\n        } else {\n            \/\/ \u767b\u5f55 \u6210\u529f\n            \/\/ \u4fdd\u5b58\u7528\u6237\u767b\u5f55\u7684\u4fe1\u606f\u5230session\u57df\u4e2d\n            req.getSession().setAttribute(\"user\",loginUser);\n            \/\/ \u8df3\u5230\u6210\u529f\u9875\u9762Login_success.html\n            req.getRequestDispatcher(\"\/pages\/user\/login_success.jsp\").forward(req,resp);\n        }\n    }\n\n    \/**\n     * \u5904\u7406\u6ce8\u518c\u7684\u529f\u80fd\n     * @param req\n     * @param resp\n     * @throws ServletException\n     * @throws IOException\n     *\/\n    protected void regist(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n\n        \/\/ \u83b7\u53d6Session\u4e2d\u7684\u9a8c\u8bc1\u7801\n        String token = (String) req.getSession().getAttribute(KAPTCHA_SESSION_KEY);\n        \/\/ \u5220\u9664 Session\u4e2d\u7684\u9a8c\u8bc1\u7801\n        req.getSession().removeAttribute(KAPTCHA_SESSION_KEY);\n\n        \/\/ 1\u3001\u83b7\u53d6\u8bf7\u6c42\u7684\u53c2\u6570\n        String username = req.getParameter(\"username\");\n        String password = req.getParameter(\"password\");\n        String email = req.getParameter(\"email\");\n        String code = req.getParameter(\"code\");\n\n\/\/        User user = new User();\n\n        \/\/\u6d4b\u8bd5\u4ee3\u7801\n\/\/        Map<String, String[]> parameterMap = req.getParameterMap();\n\/\/        for (Map.Entry<String, String[]> entry : parameterMap.entrySet()) {\n\/\/            System.out.println(entry.getKey() + \"=\" + Arrays.asList(entry.getValue()));\n\/\/        }\n\n\/\/        WebUtils.copyParamToBean(req.getParameterMap(),user);\n\n        User user = WebUtils.copyParamToBean(req.getParameterMap(), new User());\n\n\n        \/\/ 2\u3001\u68c0\u67e5 \u9a8c\u8bc1\u7801\u662f\u5426\u6b63\u786e   === \u5199\u6b7b\uff0c\u8981\u6c42\u9a8c\u8bc1\u7801\u4e3a\uff1aabcde\n        if (token != null && token.equalsIgnoreCase(code)) {\n            \/\/ 3\u3001\u68c0\u67e5 \u7528\u6237\u540d\u662f\u5426\u53ef\u7528\n            if (userService.existsUsername(username)) {\n                System.out.println(\"\u7528\u6237\u540d[\" + username + \"]\u5df2\u5b58\u5728\");\n\n                \/\/ \u628a\u56de\u663e\u4fe1\u606f\uff0c\u4fdd\u5b58\u5230Request\u57df\u4e2d\n                req.setAttribute(\"msg\",\"\u7528\u6237\u540d\u5df2\u5b58\u5728\uff01\uff01\");\n                req.setAttribute(\"username\", username);\n                req.setAttribute(\"email\", email);\n\n                \/\/ \u8df3\u56de\u6ce8\u518c\u9875\u9762\n                req.getRequestDispatcher(\"\/pages\/user\/regist.jsp\").forward(req, resp);\n            } else {\n                \/\/ \u53ef\u7528\n                \/\/ \u8c03\u7528 Sservice \u4fdd\u5b58\u5230\u6570\u636e\u5e93\n                userService.registUser(new User(null,username,password,email));\n\n                \/\/ \u8df3\u5230\u6ce8\u518c\u6210\u529f\u9875\u9762 regist_success.jsp\n                req.getRequestDispatcher(\"\/pages\/user\/regist_success.jsp\").forward(req, resp);\n            }\n        } else {\n            \/\/ \u628a\u56de\u663e\u4fe1\u606f\uff0c\u4fdd\u5b58\u5230Request\u57df\u4e2d\n            req.setAttribute(\"msg\",\"\u9a8c\u8bc1\u7801\u9519\u8bef\uff01\uff01\");\n            req.setAttribute(\"username\", username);\n            req.setAttribute(\"email\", email);\n\n            System.out.println(\"\u9a8c\u8bc1\u7801[\" + code + \"]\u9519\u8bef\");\n            req.getRequestDispatcher(\"\/pages\/user\/regist.jsp\").forward(req, resp);\n        }\n    }\n}\n<\/code><\/pre>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u4fee\u6539 login_succuess_menu.jsp<\/p>\n\n\n\n
<%--\n  Created by IntelliJ IDEA.\n  User: ZRich\n  Date: 2022\/12\/9\n  Time: \u4e0b\u5348 5:11\n  To change this template use File | Settings | File Templates.\n--%>\n<%@ page contentType=\"text\/html;charset=UTF-8\" language=\"java\" %>\n\n<div>\n    <span>\u6b22\u8fce<span class=\"um_span\">${sessionScope.user.username}<\/span>\u5149\u4e34\u5c1a\u7845\u8c37\u4e66\u57ce<\/span>\n    <a href=\"pages\/order\/order.jsp\">\u6211\u7684\u8ba2\u5355<\/a>\n    <a href=\"userServlet?action=logout\">\u6ce8\u9500<\/a>&nbsp;&nbsp;\n    <a href=\"index.jsp\">\u8fd4\u56de<\/a>\n<\/div><\/code><\/pre>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u8fd8\u8981\u4fee\u6539\u9996\u9875 index.jsp \u9875\u9762\u7684\u83dc\u5355 \uff1a<\/p>\n\n\n\n
<%@ taglib prefix=\"c\" uri=\"http:\/\/java.sun.com\/jsp\/jstl\/core\" %>\n<%@ page contentType=\"text\/html;charset=UTF-8\" language=\"java\" %>\n<!DOCTYPE html>\n<html>\n<head>\n<meta charset=\"UTF-8\">\n<title>\u4e66\u57ce\u9996\u9875<\/title>\n\n\t<%-- \u9759\u6001\u5305\u542b base\u6807\u7b7e\uff0ccss\u6837\u5f0f\uff0cjQuery\u6587\u4ef6 --%>\n\t<%@ include file=\"\/pages\/common\/head.jsp\"%>\n\n<\/head>\n<body>\n\t\n\t<div id=\"header\">\n\t\t\t<img class=\"logo_img\" alt=\"\" src=\"static\/img\/logo.gif\" >\n\t\t\t<span class=\"wel_word\">\u7f51\u4e0a\u4e66\u57ce<\/span>\n\t\t\t<div>\n\t\t\t\t<%-- \u5982\u679c\u7528\u6237\u8fd8\u6ca1\u6709\u767b\u5f55\uff0c\u663e\u793a \t\u3010\u767b\u5f55 \u548c\u6ce8\u518c\u7684\u83dc\u5355\u3011 --%>\n\t\t\t\t<c:if test=\"${empty sessionScope.user}\">\n\t\t\t\t\t<a href=\"pages\/user\/login.jsp\">\u767b\u5f55<\/a> |\n\t\t\t\t\t<a href=\"pages\/user\/regist.jsp\">\u6ce8\u518c<\/a> &nbsp;&nbsp;\n\t\t\t\t<\/c:if>\n\t\t\t\t<%-- \u5982\u679c\u5df2\u7ecf\u767b\u5f55\uff0c\u5219\u663e\u793a \u767b\u5f55 \u6210\u529f\u4e4b\u540e\u7684\u7528\u6237\u4fe1\u606f\u3002 --%>\n\t\t\t\t<c:if test=\"${not empty sessionScope.user}\">\n\t\t\t\t\t<span>\u6b22\u8fce<span class=\"um_span\">${sessionScope.user.username}<\/span>\u5149\u4e34\u5c1a\u7845\u8c37\u4e66\u57ce<\/span>\n\t\t\t\t\t<a href=\"pages\/order\/order.jsp\">\u6211\u7684\u8ba2\u5355<\/a>\n\t\t\t\t\t<a href=\"userServlet?action=logout\">\u6ce8\u9500<\/a>&nbsp;&nbsp;\n\t\t\t\t<\/c:if>\n\n\t\t\t\t<a href=\"pages\/cart\/cart.jsp\">\u8d2d\u7269\u8f66<\/a>\n\t\t\t\t<a href=\"pages\/manager\/manager.jsp\">\u540e\u53f0\u7ba1\u7406<\/a>\n\t\t\t<\/div>\n\t<\/div>\n\t<div id=\"main\">\n\t\t<div id=\"book\">\n\t\t\t<div class=\"book_cond\">\n\t\t\t\t<form action=\"client\/bookServlet\" method=\"get\">\n\t\t\t\t\t<input type=\"hidden\" name=\"action\" value=\"pageByPrice\">\n\t\t\t\t\t\u4ef7\u683c\uff1a<input id=\"min\" type=\"text\" name=\"min\" value=\"${param.min}\"> \u5143 -\n\t\t\t\t\t\t<input id=\"max\" type=\"text\" name=\"max\" value=\"${param.max}\"> \u5143\n\t\t\t\t\t\t<input type=\"submit\" value=\"\u67e5\u8be2\" \/>\n\t\t\t\t<\/form>\n\t\t\t<\/div>\n\t\t\t<div style=\"text-align: center\">\n\t\t\t\t<span>\u60a8\u7684\u8d2d\u7269\u8f66\u4e2d\u67093\u4ef6\u5546\u54c1<\/span>\n\t\t\t\t<div>\n\t\t\t\t\t\u60a8\u521a\u521a\u5c06<span style=\"color: red\">\u65f6\u95f4\u7b80\u53f2<\/span>\u52a0\u5165\u5230\u4e86\u8d2d\u7269\u8f66\u4e2d\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\n\t\t\t<c:forEach items=\"${requestScope.page.itmes}\" var=\"book\">\n\t\t\t<div class=\"b_list\">\n\t\t\t\t<div class=\"img_div\">\n\t\t\t\t\t<img class=\"book_img\" alt=\"\" src=\"${book.imgpath}\" \/>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"book_info\">\n\t\t\t\t\t<div class=\"book_name\">\n\t\t\t\t\t\t<span class=\"sp1\">\u4e66\u540d:<\/span>\n\t\t\t\t\t\t<span class=\"sp2\">${book.name}<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"book_author\">\n\t\t\t\t\t\t<span class=\"sp1\">\u4f5c\u8005:<\/span>\n\t\t\t\t\t\t<span class=\"sp2\">${book.author}<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"book_price\">\n\t\t\t\t\t\t<span class=\"sp1\">\u4ef7\u683c:<\/span>\n\t\t\t\t\t\t<span class=\"sp2\">${book.price}<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"book_sales\">\n\t\t\t\t\t\t<span class=\"sp1\">\u9500\u91cf:<\/span>\n\t\t\t\t\t\t<span class=\"sp2\">${book.sales}<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"book_amount\">\n\t\t\t\t\t\t<span class=\"sp1\">\u5e93\u5b58:<\/span>\n\t\t\t\t\t\t<span class=\"sp2\">${book.stock}<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"book_add\">\n\t\t\t\t\t\t<button>\u52a0\u5165\u8d2d\u7269\u8f66<\/button>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<\/c:forEach>\n\n\t\t<\/div>\n\n\t\t<%-- \u9759\u6001\u5305\u542b\u5206\u9875\u6761 --%>\n\t\t<%@include file=\"\/pages\/common\/page_nav.jsp\"%>\n\n\t<\/div>\n\n\t<%-- \u9759\u6001\u5305\u542b\u9875\u811a\u5185\u5bb9 --%>\n\t<%@include file=\"\/pages\/common\/footer.jsp\"%>\n\n<\/body>\n<\/html><\/code><\/pre>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
3.2\u3001\u767b\u51fa—\u6ce8\u9500\u7528\u6237<\/h2>\n\n\n\n
1\u3001\u9500\u6bc1 Session \u4e2d\u7528\u6237\u767b\u5f55\u7684\u4fe1\u606f\uff08\u6216\u8005\u9500\u6bc1 Session\uff09
2\u3001\u91cd\u5b9a\u5411\u5230\u9996\u9875\uff08\u6216\u767b\u5f55\u9875\u9762\uff09\u3002<\/p>\n\n\n\n
UserServlet \u7a0b\u5e8f\u4e2d\u6dfb\u52a0 logout \u65b9\u6cd5<\/p>\n\n\n\n
    \/**\n     * \u6ce8\u9500\n     * @param req\n     * @param resp\n     * @throws ServletException\n     * @throws IOException\n     *\/\n    protected void logout(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n        \/\/ 1. \u9500\u6bc1Session\u4e2d\u7528\u6237\u767b\u5f55\u7684\u4fe1\u606f\uff08\u6216\u8005\u9500\u6bc1Session\uff09\n        req.getSession().invalidate();\n        \/\/ 2. \u91cd\u5b9a\u5411\u5230\u9996\u9875\uff08\u6216\u767b\u9646\u9875\u9762\uff09\u3002\n        resp.sendRedirect(req.getContextPath());\n    }<\/code><\/pre>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u4fee\u6539\u3010\u6ce8\u9500\u3011\u7684\u83dc\u5355\u5730\u5740<\/p>\n\n\n\n
<a href=\"userServlet?action=logout\">\u6ce8\u9500<\/a>&nbsp;&nbsp;<\/code><\/pre>\n\n\n\n
index.jsp<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
login_success_menu.jsp<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
3.3\u3001\u8868\u5355\u91cd\u590d\u63d0\u4ea4\u4e4b—–\u9a8c\u8bc1\u7801<\/h2>\n\n\n\n
\u8868\u5355\u91cd\u590d\u63d0\u4ea4\u6709\u4e09\u79cd\u5e38\u89c1\u7684\u60c5\u51b5\uff1a
\u4e00\uff1a\u63d0\u4ea4\u5b8c\u8868\u5355\u3002\u670d\u52a1\u5668\u4f7f\u7528\u8bf7\u6c42\u8f6c\u6765\u8fdb\u884c\u9875\u9762\u8df3\u8f6c\u3002\u8fd9\u4e2a\u65f6\u5019\uff0c\u7528\u6237\u6309\u4e0b\u529f\u80fd\u952e F5\uff0c\u5c31\u4f1a\u53d1\u8d77\u6700\u540e\u4e00\u6b21\u7684\u8bf7\u6c42\u3002\u9020\u6210\u8868\u5355\u91cd\u590d\u63d0\u4ea4\u95ee\u9898\u3002\u89e3\u51b3\u65b9\u6cd5\uff1a\u4f7f\u7528\u91cd\u5b9a\u5411\u6765\u8fdb\u884c\u8df3\u8f6c
\u4e8c\uff1a\u7528\u6237\u6b63\u5e38\u63d0\u4ea4\u670d\u52a1\u5668\uff0c\u4f46\u662f\u7531\u4e8e\u7f51\u7edc\u5ef6\u8fdf\u7b49\u539f\u56e0\uff0c\u8fdf\u8fdf\u672a\u6536\u5230\u670d\u52a1\u5668\u7684\u54cd\u5e94\uff0c\u8fd9\u4e2a\u65f6\u5019\uff0c\u7528\u6237\u4ee5\u4e3a\u63d0\u4ea4\u5931\u8d25\uff0c\u5c31\u4f1a\u7740\u6025\uff0c\u7136\u540e\u591a\u70b9\u4e86\u51e0\u6b21\u63d0\u4ea4\u64cd\u4f5c\uff0c\u4e5f\u4f1a\u9020\u6210\u8868\u5355\u91cd\u590d\u63d0\u4ea4\u3002
\u4e09\uff1a\u7528\u6237\u6b63\u5e38\u63d0\u4ea4\u670d\u52a1\u5668\u3002\u670d\u52a1\u5668\u4e5f\u6ca1\u6709\u5ef6\u8fdf\uff0c\u4f46\u662f\u63d0\u4ea4\u5b8c\u6210\u540e\uff0c\u7528\u6237\u56de\u9000\u6d4f\u89c8\u5668\u3002\u91cd\u65b0\u63d0\u4ea4\u3002\u4e5f\u4f1a\u9020\u6210\u8868\u5355\u91cd\u590d\u63d0\u4ea4\u3002<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
3.4\u3001\u8c37\u6b4c kaptcha \u56fe\u7247\u9a8c\u8bc1\u7801\u7684\u4f7f\u7528<\/h2>\n\n\n\n
\u8c37\u6b4c\u9a8c\u8bc1\u7801 kaptcha \u4f7f\u7528\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n\n\n\n
1\u3001\u5bfc\u5165\u8c37\u6b4c\u9a8c\u8bc1\u7801\u7684 jar \u5305
kaptcha-2.3.2.jar<\/p>\n\n\n\n
2\u3001\u5728 web.xml \u4e2d\u53bb\u914d\u7f6e\u7528\u4e8e\u751f\u6210\u9a8c\u8bc1\u7801\u7684 Servlet \u7a0b\u5e8f<\/p>\n\n\n\n
<servlet>\n<servlet-name>KaptchaServlet<\/servlet-name>\n<servlet-class>com.google.code.kaptcha.servlet.KaptchaServlet<\/servlet-class>\n<\/servlet>\n<servlet-mapping>\n<servlet-name>KaptchaServlet<\/servlet-name>\n<url-pattern>\/kaptcha.jpg<\/url-pattern>\n<\/servlet-mapping><\/code><\/pre>\n\n\n\n
3\u3001\u5728\u8868\u5355\u4e2d\u4f7f\u7528 img \u6807\u7b7e\u53bb\u663e\u793a\u9a8c\u8bc1\u7801\u56fe\u7247\u5e76\u4f7f\u7528\u5b83<\/p>\n\n\n\n
    <form action=\"http:\/\/localhost:8080\/JavaWeb_Code_Demo\/registServlet\" method=\"get\">\n        \u7528\u6237\u540d\uff1a<input type=\"text\" name=\"username\"> <br\/>\n        \u9a8c\u8bc1\u7801\uff1a<input type=\"text\" style=\"width: 60px\" name=\"code\">\n        <img src=\"http:\/\/localhost:8080\/JavaWeb_Code_Demo\/kaptcha.jpg\" alt=\"\" style=\"width: 100px; height: 28px;\"> <br\/>\n        <input type=\"submit\" value=\"\u6ce8\u518c\">\n    <\/fo<\/code><\/pre>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
4\u3001\u5728\u670d\u52a1\u5668\u83b7\u53d6\u8c37\u6b4c\u751f\u6210\u7684\u9a8c\u8bc1\u7801\u548c\u5ba2\u6237\u7aef\u53d1\u9001\u8fc7\u6765\u7684\u9a8c\u8bc1\u7801\u6bd4\u8f83\u4f7f\u7528\u3002<\/p>\n\n\n\n
package top.qaqaq.servlet;\n\nimport jakarta.servlet.ServletException;\nimport jakarta.servlet.http.HttpServlet;\nimport jakarta.servlet.http.HttpServletRequest;\nimport jakarta.servlet.http.HttpServletResponse;\n\nimport java.io.IOException;\n\nimport static com.google.code.kaptcha.Constants.KAPTCHA_SESSION_KEY;\n\n\/**\n * @author RichieZhang\n * @create 2022-12-13 \u4e0b\u5348 2:26\n *\/\npublic class RegistServlet extends HttpServlet {\n\n    @Override\n    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n\/\/        super.doGet(req, resp);\n\n        \/\/ \u83b7\u53d6Session\u4e2d\u7684\u9a8c\u8bc1\u7801\n        String token = (String) req.getSession().getAttribute(KAPTCHA_SESSION_KEY);\n        \/\/ \u5220\u9664 Session\u4e2d\u7684\u9a8c\u8bc1\u7801\n        req.getSession().removeAttribute(KAPTCHA_SESSION_KEY);\n\n        \/\/ \u83b7\u53d6\u8868\u5355\u9879\u8f93\u5165\u7684\u9a8c\u8bc1\u7801\n        String code = req.getParameter(\"code\");\n        \/\/ \u83b7\u53d6\u7528\u6237\u540d\n        String username = req.getParameter(\"username\");\n\n        if (token != null && token.equalsIgnoreCase(code)) {\n            System.out.println(\"\u4fdd\u5b58\u5230\u6570\u636e\u5e93\uff1a\" + username);\n\n            \/\/req.getRequestDispatcher(\"\/ok.jsp\").forward(req,resp);\n\n\/\/        try {\n\/\/            Thread.sleep(5000);\n\/\/        } catch (InterruptedException e) {\n\/\/            e.printStackTrace();\n\/\/        }\n\n            resp.sendRedirect(req.getContextPath() + \"\/ok.jsp\");\n        } else {\n            System.out.println(\"\u8bf7\u4e0d\u8981\u91cd\u590d\u63d0\u4ea4\u8868\u5355\");\n        }\n\n    }\n}\n<\/code><\/pre>\n\n\n\n
\u5207\u6362\u9a8c\u8bc1\u7801\uff1a<\/p>\n\n\n\n
\t\t\t\/\/ \u7ed9\u9a8c\u8bc1\u7801\u7684\u56fe\u7247\uff0c\u7ed1\u5b9a\u5355\u51fb\u4e8b\u4ef6\n\t\t\t$(\"#code_img\").click(function () {\n\t\t\t\t\/\/ \u5728\u4e8b\u4ef6\u54cd\u5e94\u7684function\u51fd\u6570\u4e2d\u6709\u4e00\u4e2athis\u5bf9\u8c61\u3002\u8fd9\u4e2athis\u5bf9\u8c61\uff0c\u662f\u5f53\u524d\u6b63\u5728\u54cd\u5e94\u4e8b\u4ef6\u7684dom\u5bf9\u8c61\u3002\n\t\t\t\t\/\/ src\u5c5e\u6027\u8868\u793a\u9a8c\u8bc1\u7801img\u6807\u7b7e\u7684 \u56fe\u7247\u8def\u5f84\u3002\u5b83\u53ef\u8bfb\uff0c\u53ef\u5199\n\t\t\t\t\/\/ alert(this.src);\n\t\t\t\tthis.src = \"${basePath}kaptcha.jpg?d=\" + new Date().getTime();\n\t\t\t})<\/code><\/pre>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e66\u57ce\u9879\u76ee-\u663e\u793a\u767b\u5f55\u7684\u7528\u6237\u4fe1\u606f\u3001\u4e66\u57ce\u9879\u76ee-\u6ce8\u9500\u767b\u5f55\u3001\u4e66\u57ce\u9879\u76ee-\u8868\u5355\u91cd\u590d\u63d0\u4ea4\u7684\u4e09\u79cd\u5e38\u89c1\u60c5\u51b5\u3001\u4e66\u57ce\u9879\u76ee-\u9a8c\u8bc1\u7801\u5e95\u5c42\u539f […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[59],"tags":[61],"class_list":["post-2554","post","type-post","status-publish","format-standard","hentry","category-javaweb-code","tag-javaweb"],"_links":{"self":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/2554"}],"collection":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2554"}],"version-history":[{"count":2,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/2554\/revisions"}],"predecessor-version":[{"id":2723,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/2554\/revisions\/2723"}],"wp:attachment":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2554"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2554"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2554"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}