diff --git a/skic/WebRoot/WEB-INF/web.xml b/skic/WebRoot/WEB-INF/web.xml
index dd43bfb..588c48d 100644
--- a/skic/WebRoot/WEB-INF/web.xml
+++ b/skic/WebRoot/WEB-INF/web.xml
@@ -1,54 +1,66 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
-  <display-name>Scorpion king Information consulting company</display-name>
-  <servlet>
-    <servlet-name>CheckLoginServlet</servlet-name>
-    <servlet-class>com.skic.servlet.CheckLoginServlet</servlet-class>
-  </servlet>
-  <servlet-mapping>
-    <servlet-name>CheckLoginServlet</servlet-name>
-    <url-pattern>/CheckLoginServlet</url-pattern>
-  </servlet-mapping>
-  <servlet>
-    <servlet-name>CheckRegisterServlet</servlet-name>
-    <servlet-class>com.skic.servlet.CheckRegisterServlet</servlet-class>
-  </servlet>
-  <servlet>
-    <servlet-name>LogoutServlet</servlet-name>
-    <servlet-class>com.skic.servlet.LogoutServlet</servlet-class>
-  </servlet>
-  <servlet-mapping>
-    <servlet-name>CheckRegisterServlet</servlet-name>
-    <url-pattern>/CheckRegisterServlet</url-pattern>
-  </servlet-mapping>
-  <servlet-mapping>
-    <servlet-name>LogoutServlet</servlet-name>
-    <url-pattern>/LogoutServlet</url-pattern>
-  </servlet-mapping>  
- <filter>
-    <filter-name>CheckLoginFilter</filter-name>
-    <filter-class>com.skic.filter.CheckLoginFilter</filter-class>
-  </filter>
-  <filter-mapping>
-    <filter-name>CheckLoginFilter</filter-name>
-    <url-pattern>/page/*</url-pattern>
-  </filter-mapping>
-  <filter>
-    <filter-name>vipPermissionFilter</filter-name>
-    <filter-class>com.skic.filter.AdminPermissionFilter</filter-class>
-  </filter>
-  <filter-mapping>
-    <filter-name>vipPermissionFilter</filter-name>
-    <url-pattern>/page/adminPage/*</url-pattern>
-  </filter-mapping>
- 
- 
-  <welcome-file-list>
-    <welcome-file>index.html</welcome-file>
-    <welcome-file>index.htm</welcome-file>
-    <welcome-file>index.jsp</welcome-file>
-    <welcome-file>default.html</welcome-file>
-    <welcome-file>default.htm</welcome-file>
-    <welcome-file>default.jsp</welcome-file>
-  </welcome-file-list>
+<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xmlns="http://xmlns.jcp.org/xml/ns/javaee"
+	xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
+	id="WebApp_ID" version="3.1">
+	<display-name>Scorpion king Information consulting company</display-name>
+	<servlet>
+		<servlet-name>CheckLoginServlet</servlet-name>
+		<servlet-class>com.skic.servlet.CheckLoginServlet</servlet-class>
+	</servlet>
+	<servlet-mapping>
+		<servlet-name>CheckLoginServlet</servlet-name>
+		<url-pattern>/CheckLoginServlet</url-pattern>
+	</servlet-mapping>
+	<servlet>
+		<servlet-name>CheckRegisterServlet</servlet-name>
+		<servlet-class>com.skic.servlet.CheckRegisterServlet</servlet-class>
+	</servlet>
+	<servlet>
+		<servlet-name>LogoutServlet</servlet-name>
+		<servlet-class>com.skic.servlet.LogoutServlet</servlet-class>
+	</servlet>
+	<servlet>
+		<servlet-name>CheckNameServlet</servlet-name>
+		<servlet-class>com.skic.servlet.CheckNameServlet</servlet-class>
+	</servlet>
+
+	<servlet-mapping>
+		<servlet-name>CheckRegisterServlet</servlet-name>
+		<url-pattern>/CheckRegisterServlet</url-pattern>
+	</servlet-mapping>
+	<servlet-mapping>
+		<servlet-name>LogoutServlet</servlet-name>
+		<url-pattern>/LogoutServlet</url-pattern>
+	</servlet-mapping>
+	<servlet-mapping>
+		<servlet-name>CheckNameServlet</servlet-name>
+		<url-pattern>/CheckNameServlet</url-pattern>
+	</servlet-mapping>
+	<filter>
+		<filter-name>CheckLoginFilter</filter-name>
+		<filter-class>com.skic.filter.CheckLoginFilter</filter-class>
+	</filter>
+	<filter-mapping>
+		<filter-name>CheckLoginFilter</filter-name>
+		<url-pattern>/page/*</url-pattern>
+	</filter-mapping>
+	<filter>
+		<filter-name>vipPermissionFilter</filter-name>
+		<filter-class>com.skic.filter.AdminPermissionFilter</filter-class>
+	</filter>
+	<filter-mapping>
+		<filter-name>vipPermissionFilter</filter-name>
+		<url-pattern>/page/adminPage/*</url-pattern>
+	</filter-mapping>
+
+
+	<welcome-file-list>
+		<welcome-file>index.html</welcome-file>
+		<welcome-file>index.htm</welcome-file>
+		<welcome-file>index.jsp</welcome-file>
+		<welcome-file>default.html</welcome-file>
+		<welcome-file>default.htm</welcome-file>
+		<welcome-file>default.jsp</welcome-file>
+	</welcome-file-list>
 </web-app>
\ No newline at end of file
diff --git a/skic/WebRoot/register.jsp b/skic/WebRoot/register.jsp
index 90850c3..f29d9a9 100644
--- a/skic/WebRoot/register.jsp
+++ b/skic/WebRoot/register.jsp
@@ -45,6 +45,7 @@
 <!-- <link rel="stylesheet" type="text/css" href="css/normalize.css" /> -->
 <link rel="stylesheet"
 	href="https://cdnjs.cloudflare.com/ajax/libs/materialize/0.97.1/css/materialize.min.css">
+<script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.min.js"></script>
 <style type="text/css">
 html, body {
 	height: 100%;
@@ -72,6 +73,41 @@ body {
 <!--[if IE]>
 		<script src="http://apps.bdimg.com/libs/html5shiv/3.7/html5shiv.min.js"></script>
 	<![endif]-->
+<script type="text/javascript">
+	function ine(data) {
+		if (data == 1) {
+			document.getElementById("userName").setAttribute("class", "validate invalid");
+			document.getElementById("userNamelab").setAttribute("data-error", "不能为空");
+		} else if (data == 2) {
+			document.getElementById("userName").setAttribute("class", "validate invalid");
+			document.getElementById("userNamelab").setAttribute("data-error", "用户名已存在");
+		} else if (data == 3) {
+			document.getElementById("userNamelab").setAttribute("data-success", "该用户名可用");
+		} else {
+			document.getElementById("userName").setAttribute("class", "validate invalid");
+			document.getElementById("userNamelab").setAttribute("data-error", "未知错误");
+		}
+	}
+
+	function checkUser() {
+		var name = $('#userName').val();
+		var s = 0;
+		$.ajax({
+			type : "post",
+			url : '<%=request.getContextPath()%>/CheckNameServlet',
+			data : "name=" + name,
+			success : function(data) {
+				ine(data);
+			}
+		});
+	}
+
+	$(document).ready(function() {
+		$("#userName").blur(function() {
+			checkUser();
+		});
+	})
+</script>
 </head>
 <body class=" cyan darken-1">
 	<div id="login-page" class="row">
@@ -89,8 +125,8 @@ body {
 				<div class="row margin">
 					<div class="input-field col s12">
 						<i class="mdi-social-person-outline prefix"></i> <input
-							name="userName" type="text" class="validate"> <label
-							for="username" class="center-align">Username</label>
+							name="userName" id="userName" type="text" class="validate">
+						<label for="username" id="userNamelab" class="center-align">Username</label>
 					</div>
 				</div>
 				<div class="row margin">
@@ -110,7 +146,7 @@ body {
 				<div class="row margin">
 					<div class="input-field col s12">
 						<i class="mdi-action-lock-outline prefix"></i> <input type="tel"
-							name="tel" class="validate"> <label for="username"
+							name="tel" class="validate"> <label for="tel"
 							class="center-align">PhoneNum</label>
 					</div>
 				</div>
diff --git a/skic/src/com/skic/DAO/UserDAO.java b/skic/src/com/skic/DAO/UserDAO.java
index 51bea5c..8b80089 100644
--- a/skic/src/com/skic/DAO/UserDAO.java
+++ b/skic/src/com/skic/DAO/UserDAO.java
@@ -14,5 +14,7 @@ public interface UserDAO {
 	public ResultSet select(Connection conn, UserDTO user) throws SQLException;
 	
 	public ResultSet showAll(Connection conn, UserDTO user) throws SQLException;
+	
+	public ResultSet checkUserNameExist(Connection conn, UserDTO user) throws SQLException;
 
 }
diff --git a/skic/src/com/skic/DAO/impl/UserDAOimpl.java b/skic/src/com/skic/DAO/impl/UserDAOimpl.java
index d8289c0..988fad2 100644
--- a/skic/src/com/skic/DAO/impl/UserDAOimpl.java
+++ b/skic/src/com/skic/DAO/impl/UserDAOimpl.java
@@ -74,4 +74,13 @@ public class UserDAOimpl implements UserDAO {
 		return pre.executeQuery();
 	}
 
+	@Override
+	public ResultSet checkUserNameExist(Connection conn, UserDTO user) throws SQLException {
+		PreparedStatement pre = conn
+				.prepareStatement(
+						"SELECT col_userName FROM tb_skicvip WHERE col_userName=?");
+		pre.setString(1, user.getUserName());
+		return pre.executeQuery();
+	}
+
 }
diff --git a/skic/src/com/skic/service/CheckLoginService.java b/skic/src/com/skic/service/CheckLoginService.java
index ec36649..9bffcfe 100644
--- a/skic/src/com/skic/service/CheckLoginService.java
+++ b/skic/src/com/skic/service/CheckLoginService.java
@@ -28,7 +28,7 @@ public class CheckLoginService {
 			}else {
 				flagTypeMap.put("login_status",0);
 			}
-			System.out.println("login_status"+flagTypeMap.get("login_status")+"adminflag = "+flagTypeMap.get("adminflag")+"vipflag = "+flagTypeMap.get("vipflag")+"rootflag = "+flagTypeMap.get("rootflag"));
+			//System.out.println("login_status"+flagTypeMap.get("login_status")+"adminflag = "+flagTypeMap.get("adminflag")+"vipflag = "+flagTypeMap.get("vipflag")+"rootflag = "+flagTypeMap.get("rootflag"));
 		} catch (SQLException e) {
 			System.out.println("获取查询结果失败");
 			e.printStackTrace();
diff --git a/skic/src/com/skic/service/CheckNameService.java b/skic/src/com/skic/service/CheckNameService.java
new file mode 100644
index 0000000..35551ef
--- /dev/null
+++ b/skic/src/com/skic/service/CheckNameService.java
@@ -0,0 +1,46 @@
+package com.skic.service;
+
+import java.sql.*;
+
+import com.skic.DAO.UserDAO;
+import com.skic.DAO.impl.UserDAOimpl;
+import com.skic.DTO.UserDTO;
+import com.skic.util.ConnectionFactory;
+
+public class CheckNameService {
+	private UserDAO userdao = new UserDAOimpl();
+
+	public boolean CheckName(UserDTO USERDTO) {
+		Connection conn = null;
+		try {
+			conn = ConnectionFactory.getInstance().makeConnection();
+			conn.setAutoCommit(false);
+			ResultSet resultSet1 = userdao.checkUserNameExist(conn, USERDTO);//调用数据库查询
+			conn.commit();
+			if (resultSet1.next()) {//查询用户名是否存在
+				return true;//存在则返回true
+			}
+		} catch (SQLException e) {
+			System.out.println("获取查询结果失败");
+			e.printStackTrace();
+			try {
+				System.out.println("更新数据失败，数据库回滚");
+				conn.rollback();
+			} catch (SQLException e1) {
+				System.out.println("数据库回滚失败");
+				e1.printStackTrace();
+			}
+		} finally {
+			if (conn != null) {
+				try {
+					conn.close();
+				} catch (SQLException e) {
+					System.out.println("数据库关闭失败");
+					e.printStackTrace();
+				}
+			}
+		}
+
+		return false;
+	}
+}
diff --git a/skic/src/com/skic/servlet/CheckNameServlet.java b/skic/src/com/skic/servlet/CheckNameServlet.java
new file mode 100644
index 0000000..f65bb09
--- /dev/null
+++ b/skic/src/com/skic/servlet/CheckNameServlet.java
@@ -0,0 +1,50 @@
+package com.skic.servlet;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import com.skic.DTO.UserDTO;
+import com.skic.service.CheckNameService;
+
+public class CheckNameServlet extends HttpServlet {
+
+	private static final long serialVersionUID = -4871016110718914020L;
+	private CheckNameService cns = new CheckNameService();
+	public CheckNameServlet() {
+		super();
+	}
+
+	public void destroy() {
+		super.destroy();
+	}
+	public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		doPost(request, response);
+	}
+	public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		response.setContentType("text/html");
+		request.setCharacterEncoding("utf-8");
+		//System.out.println("checkNameServlet开始执行");
+		PrintWriter out = response.getWriter();
+		String userName = request.getParameter("name");
+		UserDTO user = new UserDTO();
+		user.setUserName(userName.trim());
+		boolean rsName = cns.CheckName(user);
+	    if (userName.trim().equals("")) {
+	        out.print(1);
+	    } else if (rsName) {
+	        out.print(2);
+	    } else {
+	        out.print(3);
+	    }
+	}
+
+	public void init() throws ServletException {
+		
+	}
+
+}