{"id":2484,"date":"2022-12-11T16:44:41","date_gmt":"2022-12-11T08:44:41","guid":{"rendered":"https:\/\/qaqaq.top\/?p=2484"},"modified":"2022-12-11T16:44:41","modified_gmt":"2022-12-11T08:44:41","slug":"jsp%e9%a1%b5%e9%9d%a2%e6%8a%a5%e9%94%99-jasper-jasperexception","status":"publish","type":"post","link":"https:\/\/qaqaq.top\/?p=2484","title":{"rendered":"jsp\u9875\u9762\u62a5\u9519 jasper.JasperException"},"content":{"rendered":"\n<p>\u9519\u8bef\u4ee3\u7801<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Caused by: org.apache.jasper.JasperException: \u5728 &#91;86] \u884c\u5904\u7406 &#91;\/pages\/manager\/book_manager.jsp] \u65f6\u53d1\u751f\u5f02\u5e38\r\n\r\n83: \r\n84: \t\t\t&lt;%-- \u6924\u7535\u721c\u6748\u64b3\u56ad\u9428\u52eb\u7d11\u6fee? --%>\r\n85: \t\t\t\t&lt;%-- \u93af\u546d\u558c1\u951b\u6c2c\ue6e7\u93cb\u6ec4?\u5a5a\u3009\u942e\u4f78\u76ac\u6d5c\u5ea3\u74d1\u6d5c?5\u9428\u52ec\u510f\u9350\u7889\u7d1d\u6924\u7535\u721c\u9428\u52ee\u5bd6\u9365\u5b58\u69f8\u951b?1-\u93ac\u5a5a\u3009\u942e? --%>\r\n86: \t\t\t\t&lt;c:when test=\"${requestScope.page.pageTotal &lt;= 5}\">\r\n87: \r\n88: \t\t\t\t\t&lt;c:forEach begin=\"1\" end=\"${requestScope.page.pageTotal}\" var=\"i\">\r\n89: \t\t\t\t\t\t&lt;c:if test=\"${i == requestScope.page.pageNo}\">\r\n\r\n\r\nStacktrace:\r\n\tat org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:599)\r\n\tat org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:478)\r\n\tat org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:380)\r\n\tat org.apache.jasper.servlet.JspServlet.service(JspServlet.java:328)\r\n\tat jakarta.servlet.http.HttpServlet.service(HttpServlet.java:814)\r\n\tat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:223)\r\n\tat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:158)\r\n\tat org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)\r\n\tat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:185)\r\n\tat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:158)\r\n\tat org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:691)\r\n\tat org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:441)\r\n\tat org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:367)\r\n\tat org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:295)\r\n\tat top.qaqaq.web.BookServlet.page(BookServlet.java:40)\r\n\t... 30 more\r\nCaused by: jakarta.servlet.ServletException: jakarta.servlet.jsp.JspTagException: Illegal use of &amp;lt;when&amp;gt;-style tag without &amp;lt;choose&amp;gt; as its direct parent\r\n\tat org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:668)\r\n\tat org.apache.jsp.pages.manager.book_005fmanager_jsp._jspService(book_005fmanager_jsp.java:433)<\/code><\/pre>\n\n\n\n<p>\u539f\u56e0<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>    &lt;c:choose> &lt;c:when> &lt;c:otherwise>\u6807\u7b7e\n        \u4f5c\u7528\uff1a\u591a\u8def\u5224\u65ad\u3002\u8ddf switch ... case .... default \u975e\u5e38\u63a5\u8fd1\n \n        choose \u6807\u7b7e\u5f00\u59cb\u9009\u62e9\u5224\u65ad\n        when \u6807\u7b7e\u8868\u793a\u6bcf\u4e00\u79cd\u5224\u65ad\u60c5\u51b5\n            test \u5c5e\u6027\u8868\u793a\u5f53\u524d\u8fd9\u79cd\u5224\u65ad\u60c5\u51b5\u7684\u503c\n        otherwise \u6807\u7b7e\u8868\u793a\u5269\u4e0b\u7684\u60c5\u51b5\n \n        &lt;c:choose> &lt;c:when> &lt;c:otherwise>\u6807\u7b7e\u4f7f\u7528\u65f6\u9700\u8981\u6ce8\u610f\u7684\u70b9\uff1a\n        1\u3001\u6807\u7b7e\u91cc\u4e0d\u80fd\u4f7f\u7528 html \u6ce8\u91ca\uff0c\u8981\u4f7f\u7528 jsp \u6ce8\u91ca\n        2\u3001when \u6807\u7b7e\u7684\u7236\u6807\u7b7e\u4e00\u5b9a\u8981\u662f choose \u6807\u7b7e<\/code><\/pre>\n\n\n\n<p>\u591a\u8def\u5224\u65ad\u6ca1\u6709\u5199 &lt;c:choose> \u6807\u7b7e \u5bfc\u81f4\u62a5\u9519<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;c:choose>\n\n\u5185\u90e8\u4ee3\u7801\n\n&lt;\/c:choose><\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u9519\u8bef\u4ee3\u7801 \u539f\u56e0 \u591a\u8def\u5224\u65ad\u6ca1\u6709\u5199 &lt;c:choose> \u6807\u7b7e \u5bfc\u81f4\u62a5\u9519<\/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-2484","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\/2484"}],"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=2484"}],"version-history":[{"count":1,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/2484\/revisions"}],"predecessor-version":[{"id":2485,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/2484\/revisions\/2485"}],"wp:attachment":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2484"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2484"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2484"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}