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验证用户不存在有Bug

sanaaaa 1 年之前
父節點
dceb0ceb83
當前提交
6a3382c68b
共有 4 個文件被更改，包括 56 次插入 和 7 次删除
統一視圖 顯示文件統計
  1. 2 2
      .idea/misc.xml
  2. 8 0
      src/main/java/com/bing/controller/RegisterServlet.java
  3. 2 0
      src/main/java/com/bing/dao/UserDao.java
  4. 44 5
      src/main/webapp/user-register.jsp

+ 2 - 2
.idea/misc.xml
查看文件 

@@ -1,3 +1,4 @@
 
+<?xml version="1.0" encoding="UTF-8"?>
 
 <project version="4">
 
 <project version="4">
 
   <component name="ExternalStorageConfigurationManager" enabled="true" />
 
   <component name="ExternalStorageConfigurationManager" enabled="true" />
 
   <component name="MavenProjectsManager">
 
   <component name="MavenProjectsManager">
 
@@ -6,9 +7,8 @@
 
         <option value="$PROJECT_DIR$/pom.xml" />
 
         <option value="$PROJECT_DIR$/pom.xml" />
 
       </list>
 
       </list>
 
     </option>
 
     </option>
 
-    <option name="workspaceImportForciblyTurnedOn" value="true" />
 
   </component>
 
   </component>
 
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="17 (3)" project-jdk-type="JavaSDK">
 
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" project-jdk-name="17 (3)" project-jdk-type="JavaSDK">
 
     <output url="file://$PROJECT_DIR$/out" />
 
     <output url="file://$PROJECT_DIR$/out" />
 
   </component>
 
   </component>
 
 </project>
 
 </project>

+ 8 - 0
src/main/java/com/bing/controller/RegisterServlet.java
查看文件 

@@ -1,6 +1,7 @@
 
 package com.bing.controller;
 
 package com.bing.controller;
 
 
 
 import java.io.IOException;
 
 import java.io.IOException;
 
+import java.io.PrintWriter;
 
 
 
 import javax.servlet.ServletException;
 
 import javax.servlet.ServletException;
 
 import javax.servlet.annotation.WebServlet;
 
 import javax.servlet.annotation.WebServlet;
 
@@ -29,6 +30,7 @@ public class RegisterServlet extends HttpServlet {
 
 
 
     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
 
     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
 
         request.setCharacterEncoding("UTF-8");
 
         request.setCharacterEncoding("UTF-8");
 
+        response.setContentType("text/html;charset=utf-8");
 
         String email = request.getParameter("email");
 
         String email = request.getParameter("email");
 
         String pwd = request.getParameter("pwd");
 
         String pwd = request.getParameter("pwd");
 
         String userRePwd = request.getParameter("userRePwd");
 
         String userRePwd = request.getParameter("userRePwd");
 
@@ -41,5 +43,11 @@ public class RegisterServlet extends HttpServlet {
 
         } else {
 
         } else {
 
             request.getRequestDispatcher("user-register.jsp").forward(request, response);
 
             request.getRequestDispatcher("user-register.jsp").forward(request, response);
 
         }
 
         }
 
+        if (email.equals(email)) {
 
+            PrintWriter out = response.getWriter();
 
+            out.write("此账号已经存在");
 
+            out.flush();
 
+            out.close();
 
+        }
 
     }
 
     }
 
 }
 
 }

+ 2 - 0
src/main/java/com/bing/dao/UserDao.java
查看文件 

@@ -5,4 +5,6 @@ import com.bing.bean.User;
 
 public interface UserDao {
 
 public interface UserDao {
 
     int insert(String email,String pwd);
 
     int insert(String email,String pwd);
 
      User selectByName(String email);
 
      User selectByName(String email);
 
+
 
+
 
 }
 
 }

+ 44 - 5
src/main/webapp/user-register.jsp
查看文件 

@@ -283,6 +283,46 @@
 
             }
 
             }
 
         }
 
         }
 
     </style>
 
     </style>
 
+    <script type="text/javascript">
 
+        /* 获取引擎对象（兼容IE6之前的游览器） */
 
+        function getXhr() {
 
+            var xhr;
 
+            try {
 
+                xhr = new XMLHttpRequest();
 
+            } catch (e) {
 
+                xhr = new ActiveObject("Microsoft.XMLHTTP");
 
+            }
 
+            return xhr;
 
+        }
 
+
 
+        /* 检查账号是否被注册 */
 
+        function checkName() {
 
+            var email = document.getElementById("email");
 
+            var value = email.value;
 
+            var emailtip = document.getElementById("emailtip");
 
+            //创建异步引擎对象
 
+            var xhr = getXhr();
 
+
 
+            //步骤一：打开引擎，method用于设置请求的方式：get或者post
 
+            /* url设置请求的路径，async设置是同步操作还是异步操作，默认是ture(异步) */
 
+            xhr.open("post", "RegisterServlet");
 
+            /* post方式提交需要设置请求头 */
 
+            xhr.setRequestHeader("Content-Type",
 
+                "application/x-www-form-urlencoded");
 
+            /* 步骤二：发送 */
 
+            xhr.send("email=" + value);
 
+            /* 步骤三：检测引擎的状态改变 */
 
+            xhr.onreadystatechange = function() {
 
+                /* 判断响应是否已经接收完成和判断是否正常响应 */
 
+                if (xhr.readyState == 4 && xhr.status == 200) {
 
+                    /* 接收响应的字符串信息 */
 
+                    emailtip.innerText = xhr.responseText;
 
+                }
 
+
 
+            }
 
+        }
 
+    </script>
 
+
 
 </head>
 
 </head>
 
 
 
 <body>
 
 <body>
 
@@ -294,9 +334,9 @@
 
 
 
             </div>
 
             </div>
 
             <span class="form_span">It’s quick and easy. </span>
 
             <span class="form_span">It’s quick and easy. </span>
 
-            <input type="text" class="form_input" placeholder="Email" name="email" id="email">
 
-            <input type="text" class="form_input" placeholder="Password" name="pwd" id="pwd">
 
-            <input type="text" class="form_input" placeholder="RePassword" name="userRePwd" id="userRePwd">
 
+            <input type="text" class="form_input" placeholder="Email" name="email" id="email" onblur="checkName()"><span id="emailtip"></span>
 
+            <input type="password" class="form_input" placeholder="Password" name="pwd" id="pwd">
 
+            <input type="password" class="form_input" placeholder="RePassword" name="userRePwd" id="userRePwd">
 
             <br/>
 
             <br/>
 
             <button class="form_button button submit">SIGN UP</button>
 
             <button class="form_button button submit">SIGN UP</button>
 
         </form>
 
         </form>
 
@@ -316,7 +356,6 @@
 
 </div>
 
 </div>
 
 </body>
 
 </body>
 
 
 
-</html>
 
-</body>
 
 
 
 </html>
 
 </html>
 
+