關於JSP不能通過瀏覽器直接訪問，要通過servlet跳轉，但一個jsp文件里面用<iframe>標簽包含了另一個jsp的訪問問題 - 碼上歡樂

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關於JSP不能通過瀏覽器直接訪問，要通過servlet跳轉，但一個jsp文件里面用標簽包含了另一個jsp的訪問問題</a></h3> </center> <div class="postinfo"> 本文轉載自 <i class="icon-globe"></i>&nbsp;<a href="/go/aHR0cHM6Ly93d3cuY25ibG9ncy5jb20vaGVhcnR3dXpodS9wLzQxMTAyODkuaHRtbA==" target="_blank">查看原文</a> <i class="icon-time"></i>&nbsp;<span>2014-11-20 12:12</span> <i class="icon-eye-open"></i>&nbsp;<span>4276&nbsp;</span> <i class="icon-tag"></i>&nbsp; <span><a href='/tag/jsp' target="_blank">jsp</a></span> <i class="icon-star" title="2.0537"></i> <i class="icon-star" title="2.0537"></i> </div> <hr/> <div class="media-body" id="content_div"> <div class="title_down_ad ad"> </div> <div class="post_content" id="postContent"> <p>　　今天在做作業的時候遇到一個問題，以前我們寫jsp代碼都是放在<span style="color: #ff0000;">webcontext</span> 目錄下，沒有放在其子目錄下面的<span style="color: #ff0000;">WED-INF</span>目錄下面，所有導致瀏覽器可以直接訪問jsp，所以存在安全性問題很大，經過了解，正確的寫法是把jsp文件放在WED-INF目錄下面，再通過控制器跳轉。如果直接瀏覽器訪問這個放在<span style="color: #ff0000;">WED-INF</span>目錄下面的jsp就會出現404頁面，找不到jsp文件。</p> <p>　　1.首先我們來看一下放在<span style="color: #ff0000;">WEB-INF</span>目錄下面的<span style="color: #ff0000;">test1.jsp</span> 是不能直接訪問的，放在WebContext下面的是能夠直接訪問的。如圖（1.1,1.2）</p> <p>　　　　</p> <div> <img src="/image/ZmlsZTovLy9DOlxVc2Vyc1xBZG1pbmlzdHJhdG9yXEFwcERhdGFcUm9hbWluZ1xUZW5jZW50XFVzZXJzXDgwNzI4MTMzOVxRUVxXaW5UZW1wXFJpY2hPbGVcezhXVUdTTVE2W1d7TH40YDk3MTRdWzUuanBn.png" alt="" referrerpolicy="no-referrer"> </div> <p style="text-align: center;">　　　　<img style="display: block; margin-left: auto; margin-right: auto;" src="/image/aHR0cHM6Ly9pbWFnZXMwLmNuYmxvZ3MuY29tL2Jsb2cvNTc1NDcwLzIwMTQxMS8yMDExMzc1ODA0Njg1OTIuanBn.png" alt="" referrerpolicy="no-referrer"></p> <p style="text-align: center;">圖1.1（jsp文件目錄）</p> <p style="text-align: center;"><img src="/image/aHR0cHM6Ly9pbWFnZXMwLmNuYmxvZ3MuY29tL2Jsb2cvNTc1NDcwLzIwMTQxMS8yMDExMzkzNjE0MDY2OTEuanBn.png" alt="" referrerpolicy="no-referrer"></p> <p style="text-align: center;">圖1.2（瀏覽器直接訪問WEB-INF下面的jsp）</p> <ins class="adsbygoogle" style="display:block; text-align:center;" data-ad-layout="in-article" data-ad-format="fluid" data-ad-client="ca-pub-4353345653789615" data-ad-slot="4890554435"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({});</script> <p style="text-align: center;"><img src="/image/aHR0cHM6Ly9pbWFnZXMwLmNuYmxvZ3MuY29tL2Jsb2cvNTc1NDcwLzIwMTQxMS8yMDExNDEyMTgyODc0NzAucG5n.png" alt="" referrerpolicy="no-referrer"></p> <p style="text-align: center;">圖1.3（瀏覽器直接訪問WebContext目錄下面的jsp）</p> <p style="text-align: left;">　　2.但是我們可以通過servlet跳轉來訪問的test1.jsp。</p> <p style="text-align: left;">　　　　下面是servlet代碼：</p> <div class="cnblogs_code" style="text-align: left;"> <pre><span style="color: #008080;"> 1</span> <span style="color: #0000ff;">package</span><span style="color: #000000;"> com.servlet; </span><span style="color: #008080;"> 2</span> <span style="color: #008080;"> 3</span> <span style="color: #0000ff;">import</span><span style="color: #000000;"> java.io.IOException; </span><span style="color: #008080;"> 4</span> <span style="color: #0000ff;">import</span><span style="color: #000000;"> javax.servlet.ServletException; </span><span style="color: #008080;"> 5</span> <span style="color: #0000ff;">import</span><span style="color: #000000;"> javax.servlet.annotation.WebServlet; </span><span style="color: #008080;"> 6</span> <span style="color: #0000ff;">import</span><span style="color: #000000;"> javax.servlet.http.HttpServlet; </span><span style="color: #008080;"> 7</span> <span style="color: #0000ff;">import</span><span style="color: #000000;"> javax.servlet.http.HttpServletRequest; </span><span style="color: #008080;"> 8</span> <span style="color: #0000ff;">import</span><span style="color: #000000;"> javax.servlet.http.HttpServletResponse; </span><span style="color: #008080;"> 9</span> <span style="color: #008080;">10</span> @WebServlet("/TestServlet"<span style="color: #000000;">) </span><span style="color: #008080;">11</span> <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">class</span> TestServlet <span style="color: #0000ff;">extends</span><span style="color: #000000;"> HttpServlet { </span><span style="color: #008080;">12</span> <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">static</span> <span style="color: #0000ff;">final</span> <span style="color: #0000ff;">long</span> serialVersionUID = 1L<span style="color: #000000;">; </span><span style="color: #008080;">13</span> <span style="color: #0000ff;">public</span><span style="color: #000000;"> TestServlet() { </span><span style="color: #008080;">14</span> <span style="color: #0000ff;">super</span><span style="color: #000000;">(); </span><span style="color: #008080;">15</span> <span style="color: #000000;"> } </span><span style="color: #008080;">16</span> <span style="color: #0000ff;">protected</span> <span style="color: #0000ff;">void</span><span style="color: #000000;"> service(HttpServletRequest request, </span><span style="color: #008080;">17</span> HttpServletResponse response) <span style="color: #0000ff;">throws</span><span style="color: #000000;"> ServletException, IOException { </span><span style="color: #008080;">18</span> request.setCharacterEncoding("utf-8"<span style="color: #000000;">); </span><span style="color: #008080;">19</span> response.setContentType("text/html;charset=utf-8"<span style="color: #000000;">); </span><span style="color: #008080;">20</span> request.getRequestDispatcher("/WEB-INF/test1.jsp"<span style="color: #000000;">) </span><span style="color: #008080;">21</span> <span style="color: #000000;"> .forward(request, response); </span><span style="color: #008080;">22</span> <span style="color: #000000;"> } </span><span style="color: #008080;">23</span> <span style="color: #008080;">24</span> }<br><span style="font-size: 16px; color: #ff0000;">然后就能夠訪問test1.jsp了<br><br></span></pre> <img style="display: block; margin-left: auto; margin-right: auto;" src="/image/aHR0cHM6Ly9pbWFnZXMwLmNuYmxvZ3MuY29tL2Jsb2cvNTc1NDcwLzIwMTQxMS8yMDExNTMzNTUwMDU4OTcuanBn.png" alt="" referrerpolicy="no-referrer"> <pre><br><br> 圖2.1（通過servlet跳轉訪問在WEB-INF目錄下面的test1.jsp）<br><br><span style="font-size: 14px;"><span style="font-size: 15px;">3</span>.但是我們有時候會遇到這種情況在jsp里面用&lt;iframe&gt;標簽包含另一個jsp要同事訪問，但是被包含的那個jsp又不能被瀏覽器直接訪問，所有智能放在web-inf目錄下面，但是問題來了，通過servlet跳轉只能訪問外層jsp，里面被包含的jsp會出現404錯誤。<br><img src="/image/aHR0cHM6Ly9pbWFnZXMwLmNuYmxvZ3MuY29tL2Jsb2cvNTc1NDcwLzIwMTQxMS8yMDEyMDkwOTc1MDQ1NDUucG5n.png" alt="" referrerpolicy="no-referrer"><br>　　　　　　　　　　　　　　　　　　　　　　　　　　圖3.1（外面jsp層代碼包含一個jsp文件）<br><img src="/image/aHR0cHM6Ly9pbWFnZXMwLmNuYmxvZ3MuY29tL2Jsb2cvNTc1NDcwLzIwMTQxMS8yMDEyMTAzMDIxODkyMjYucG5n.png" alt="" referrerpolicy="no-referrer"><br>　　　　　　　　圖3.2（訪問jsp結果被包含的jsp不能被顯示出來）<br>這時就需要我們在web.xml配置一下jsp能夠通過服務器端跳轉訪問，而客戶端不能直接訪問具體代碼如下：</span></pre> <div class="cnblogs_code"> <pre>&lt;servlet&gt; &lt;servlet-name&gt;<span style="color: #0000ff;">goto</span>&lt;/servlet-name&gt; &lt;jsp-file&gt;/WEB-INF/jsp/msgs.jsp&lt;/jsp-file&gt; &lt;/servlet&gt; &lt;servlet-mapping&gt; &lt;servlet-name&gt;<span style="color: #0000ff;">goto</span>&lt;/servlet-name&gt; &lt;url-pattern&gt;/msgs&lt;/url-pattern&gt; &lt;/servlet-mapping&gt;</pre> </div> <p>然后把iframe 屬性src = &nbsp;“msgs”就可以訪問了。</p> <pre><span style="font-size: 14px;"><img src="/image/aHR0cHM6Ly9pbWFnZXMwLmNuYmxvZ3MuY29tL2Jsb2cvNTc1NDcwLzIwMTQxMS8yMDEyMTYzODk1MzQ3MTAucG5n.png" alt="" referrerpolicy="no-referrer"><br><img src="/image/aHR0cHM6Ly9pbWFnZXMwLmNuYmxvZ3MuY29tL2Jsb2cvNTc1NDcwLzIwMTQxMS8yMDEyMTgyODUwMDU4NDMuanBn.png" alt="" referrerpolicy="no-referrer"><br>　　雖然這是個很小的問題，這時我學習jsp時遇到的問題，於是把他記錄下來，我覺得還是有收獲的，如果有什么錯誤的地方，本人新手，</span></pre> <pre>希望大家指正，感激不盡！</pre> <pre><span style="font-size: 14px;"><br><br></span></pre> </div> <ins class="adsbygoogle" style="display:block; text-align:center;" data-ad-layout="in-article" data-ad-format="fluid" data-ad-client="ca-pub-4353345653789615" data-ad-slot="4890554435"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({});</script> <p>&nbsp;</p> <p style="text-align: left;">　　　　</p> <p>&nbsp;</p> </div> <div class="read-more" id="read-more" style="display:none"></div> <div class="alert alert-info" style="margin-top:20px;"> <p id="tips_top1"> </p> </div> <script type="text/javascript">  </script> <div class="iframe-container"> </div> </div> <div class="ad_content_down ad"> </div> </div> <div class="disclaimer visible-desktop"> <br/> <div class="alert alert-block"> <button type="button" class="close" data-dismiss="alert">×</button> <h4>免責聲明！</h4> <p>本站轉載的文章為個人學習借鑒使用，本站對版權不負任何法律責任。如果侵犯了您的隱私權益，請聯系本站郵箱yoyou2525@163.com刪除。</p> </div> <br/><br/> </div> </div>  <div class="span4 left_content"> <div id="left_list_div" class="left_content"> <span class="list-group-item" href="javascript:void(0)"><i class="icon-filter"></i><strong>猜您在找</strong></span> <a class='list-group-item' href="/blog/2880b11.html" title="AWS RDS 無法連接訪問問題"> <i class="icon-file"></i> AWS RDS 無法連接訪問問題 </a> <a class='list-group-item' href="/blog/f22fdf1.html" title="瀏覽器直接訪問linux上的圖片"> <i class="icon-file"></i> 瀏覽器直接訪問linux上的圖片 </a> <a class='list-group-item' href="/blog/d4e10d1.html" title="在瀏覽器中直接訪問Linux上的一張圖片"> <i class="icon-file"></i> 在瀏覽器中直接訪問Linux上的一張圖片 </a> <a class='list-group-item' href="/blog/3cc2b51.html" title="phonegap 解決https訪問問題"> <i class="icon-file"></i> phonegap 解決https訪問問題 </a> <a class='list-group-item' href="/blog/e630a81.html" title="centos8端口不能訪問問題"> <i class="icon-file"></i> centos8端口不能訪問問題 </a> <a class='list-group-item' href="/blog/66d2de1.html" title="RabbitMQ遠程不能訪問問題的解決"> <i class="icon-file"></i> RabbitMQ遠程不能訪問問題的解決 </a> <a class='list-group-item' href="/blog/b9ec431.html" title="服務器部署網站后，公網ip可以訪問，域名不能訪問問題（穩）"> <i class="icon-file"></i> 服務器部署網站后，公網ip可以訪問，域名不能訪問問題（穩） </a> <a class='list-group-item' href="/blog/79f3c31.html" title="Linux下Tomcat同時部署兩個工程然而只有一個能訪問問題"> <i class="icon-file"></i> Linux下Tomcat同時部署兩個工程然而只有一個能訪問問題 </a> <a class='list-group-item' href="/blog/a57e9a1.html" title="iis共享文件夾內圖片文件通過url無法訪問問題"> <i class="icon-file"></i> iis共享文件夾內圖片文件通過url無法訪問問題 </a> <a class='list-group-item' href="/blog/9f39841.html" title="Spring MVC controller控制器映射無法訪問問題！！！"> <i class="icon-file"></i> Spring MVC controller控制器映射無法訪問問題！！！ </a> <div id="right_float_ad" class="ad"> </div> </div> </div> </div> </div> <div class="clear">&nbsp;</div> <div class="fbar" style="z-index:100"> <div class="span7" style="color:grey;font-size:12px;"> </div> <div class="pull-right"> <span><a href="http://beian.miit.gov.cn" rel="nofollow" target="_blank">粵ICP備18138465號</a>&nbsp;&nbsp;</span><span>&copy; 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