diff --git a/app/models/issue_overdue.rb b/app/models/issue_overdue.rb
new file mode 100644
index 000000000..342790f55
--- /dev/null
+++ b/app/models/issue_overdue.rb
@@ -0,0 +1,33 @@
+class IssueOverdue < ActiveRecord::Base
+#缺陷到期后发送邮件提示
+#只监听已经提交的未到期的缺陷，已过期的缺陷默认已经发过邮件通知，不再提醒。
+  def self.mail_issue
+    threads = []
+    issues = Issue.where("done_ratio <> 100 and closed_on is null and due_date is not null")
+    puts issues
+    issues.each do |issue|
+      thread = Thread.new do
+        while true
+          cur_issue = Issue.find issue.id
+          if cur_issue.done_ratio == 100 || cur_issue.closed_on != nil
+            break
+          end
+          if Time.now < Time.parse(cur_issue.due_date.to_s)
+            #休眠一个小时。。。
+            puts cur_issue.id.to_s
+            sleep 5
+          else
+            #发邮件
+            puts "11" + issue.id.to_s
+            #Mailer.issue_expire(issue).deliver
+            Mailer.issue_add(issue).deliver
+            break
+          end
+        end
+      end
+      threads <<  thread
+    end
+    puts threads
+    return threads
+  end
+end
\ No newline at end of file
diff --git a/app/models/mailer.rb b/app/models/mailer.rb
index 156b6a8c5..f6c5e1a9e 100644
--- a/app/models/mailer.rb
+++ b/app/models/mailer.rb
@@ -104,7 +104,7 @@ class Mailer < ActionMailer::Base
     message_id issue
     @author = issue.author
     @issue = issue
-    @issue_url = url_for(:controller => 'issues', :action => 'show', :id => issue)
+    @issue_url = url_for(:controller  => 'issues', :action => 'show', :id => issue.id)
     recipients = issue.recipients
     cc = issue.watcher_recipients - recipients
     mail :to => recipients,
@@ -175,7 +175,7 @@ class Mailer < ActionMailer::Base
     message_id issue
     @author = issue.author
     @issue = issue
-    @issue_url = url_for(:controller => 'issues', :action => 'show', :id => issue)
+    @issue_url = url_for(:controller => 'issues', :action => 'show', :id => issue.id)
     recipients = issue.recipients
     s = l(:text_issue_expire,:issue => "[#{issue.project.name} - #{issue.tracker.name} ##{issue_id}] (#{issue.status.name}) #{issue.subject}")
     mail :to => recipients,
@@ -582,34 +582,7 @@ class Mailer < ActionMailer::Base
     end
   end
 
-  #缺陷到期后发送邮件提示
-  #只监听已经提交的未到期的缺陷，已过期的缺陷默认已经发过邮件通知，不再提醒。
-  def mail_issue
-    threads = []
-    issues = Issue.where("done_ratio <> 100 and closed_on is null and due_date is not null and due_date > '#{Time.now.to_date}'")
-    issues.each do |issue|
-      thread = Thread.start do
-        while true
-          cur_issue = Issue.find issue.id
-          if cur_issue.done_ratio == 100 || cur_issue.closed_on != nil
-            break
-          end
-          if Time.now < Time.parse(cur_issue.due_date.to_s)
-            #休眠一个小时。。。
-            sleep 3600
-          else
-            #发邮件
-            #puts issue.id.to_s
-            Mailer.issue_expire(issue).deliver
-            #Mailer.issue_add(issue).deliver
-            break
-          end
-        end
-      end
-      threads <<  thread
-    end
-    threads
-  end
+
 
   private
 
diff --git a/config/initializers/task.rb b/config/initializers/task.rb
index 51c903355..62d1d78e5 100644
--- a/config/initializers/task.rb
+++ b/config/initializers/task.rb
@@ -1,6 +1,8 @@
-Mailer.mail_issue.each do |t|
-  t.join
-end
+@threads = IssueOverdue.mail_issue
+#ii = 1
+#@threads.each do |t|
+#  t.join
+#end
 
 #Thread.new do
 #  if Time.now == Time.