修复所有数据库性能问题

WebRoot/JSPhandle/signin_insert.jsp

@@ -35,7 +35,8 @@ String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.
     String url="jdbc:mysql://localhost:3306/db_school?useUnicode=true&characterEncoding=utf-8";    
     String use = "root";     
     String password = "";    
-    Class.forName(driver);    
+    Class.forName(driver);  
+    try{  
     Connection conn= DriverManager.getConnection(url,use,password);    
     PreparedStatement sql =conn.prepareStatement("insert into user(userName,password,Email,phoneNum)values(?,?,?,?)");  
     sql.setString(1,users);  
@@ -45,6 +46,9 @@ String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.
     int rtn=sql.executeUpdate();  
     sql.close();  
     conn.close();  
+    } catch (Exception ex) {
+			ex.printStackTrace();
+		}
     %>  
     <% response.setHeader("refresh","0;url=../signin_show.jsp");%>  
   </body>