JProgressBar上的按钮单击以显示进度，同时发送电子邮件

Question

我发送邮件与我的挥杆计划的间隔。点击按钮发送电子邮件时，我想显示进度条。所有电子邮件发送完成后，进度条会达到100％。但是当邮件发送时，progrssbar不显示任何内容。

private void btnSendEmailsNowActionPerformed(java.awt.event.ActionEvent evt) {               
    btnSendEmailsNow.setEnabled(false); 
    Task task = new Task(); 
    task.start(); 
    //Load property files 
    loadProps(); 
    //Read config file. 
    readConfig(); 
    //Take filename "FromEmail_list" after reading config file. 
    BufferedReader br1=null; 
    BufferedReader br2=null; 
    String line1="",line2=""; 
    String csvSplitBy=","; 
    String strMailFrom="",strPassword=""; 
    String strSendTo=""; 
    int countCSVFrom=0,countCSVSendTo; 
    System.out.println("strCSVFrom=" + strCSVFrom + ", strcsvSendTo=" + strCSVSendTo); 
    try{ 
     br1=new BufferedReader(new FileReader(strCSVFrom)); 
     br2=new BufferedReader(new FileReader(strCSVSendTo)); 
     while((line1=br1.readLine())!=null){ 
      countCSVFrom+=1; 
      String[] strarrFromEmail = line1.split(csvSplitBy); 
      strMailFrom=strarrFromEmail[0]; 
      strPassword=strarrFromEmail[1]; 
      System.out.println("strFrom="+strMailFrom + ", strPassword="+strPassword); 
      countCSVSendTo=0; 
      while((line2=br2.readLine())!=null){ 
      System.out.println("line2="+line2.toString()); 
      countCSVSendTo+=1; 
      String[] strMailTo=line2.split("\n"); 
      strSendTo=strMailTo[0]; 
       String subject = "Test mail"; 
       String message=""; 

       //inline image 
       Map<String,String> inlineImage=new HashMap<String,String>(); 
       inlineImage.put("image1", "Logo.jpg"); 

       frmEmailer mailer = new frmEmailer(); 
       String filename=txtHTMLFile.getText(); 
       System.out.println("filename=" + filename);   
       try{ 
       message=mailer.readHTML(filename,message); 
       mailer.sendHtmlEmail(strhost, strport, strMailFrom, strPassword, strSendTo, 
            subject, message,inlineImage); 
       System.out.println("Email sent successfully."); 

       Random rand = new Random(); 
       int randomNum = rand.nextInt((8 - 3) + 1) + 3; 

       System.out.println(randomNum); 

       Thread.sleep(randomNum*1000); //1000 microseconds = 1 seconds. 

        if(countCSVSendTo==2){ 
        break;  
        } 
       }catch (Exception ex) { 
        System.out.println("Failed to sent email."); 
        ex.printStackTrace(); 
       } 
      } 

     //System.out.println("countcsvfrom="+countCSVFrom + ", line1=" + line1.toString()); 

     System.out.println("countcsvsendto="+countCSVSendTo); 
     } 
     JOptionPane.showMessageDialog(null, "Emails sent successfully!"); 
     btnSendEmailsNow.setEnabled(true); 
    }catch(FileNotFoundException fnfe){ 
      fnfe.printStackTrace(); 
      JOptionPane.showMessageDialog(null, "Failed to send Email!"); 
    }catch(IOException ioe){ 
     JOptionPane.showMessageDialog(null, "Failed to send Email!"); 
     ioe.printStackTrace(); 
    } 
}  
private class Task extends Thread {  
    public Task(){ 
    } 

    public void run(){ 
    for(int i =0; i<= 100; i+=10){ 
     final int progress = i; 
     SwingUtilities.invokeLater(new Runnable() { 
      public void run() { 
       progressbar.setValue(progress); 
      } 
     }); 
     try { 
      Thread.sleep(100); 
     } catch (InterruptedException e) {} 
    } 
    } 
}  

Answer 1

试试这个代码：

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt)           
    {            
     new Thread(){ 
      public void run(){             
       btnSendEmailsNow.setEnabled(false); 
       //Load property files 
       loadProps(); 
       //Read config file. 
       readConfig(); 
       //Take filename "FromEmail_list" after reading config file. 
       BufferedReader br1=null; 
       BufferedReader br2=null; 
       String line1="",line2=""; 
       String csvSplitBy=","; 
       String strMailFrom="",strPassword=""; 
       String strSendTo=""; 
       int countCSVFrom=0,countCSVSendTo; 
       int EmailCount = 0; 
       ProgressMonitor pm = new ProgressMonitor(null, "Loading Progress", "Getting Started...", 0, /*number of emails to be sent*/); 
       System.out.println("strCSVFrom=" + strCSVFrom + ", strcsvSendTo=" + strCSVSendTo); 
       try{ 
        br1=new BufferedReader(new FileReader(strCSVFrom)); 
        br2=new BufferedReader(new FileReader(strCSVSendTo)); 
        while((line1=br1.readLine())!=null){ 
         countCSVFrom+=1; 
         String[] strarrFromEmail = line1.split(csvSplitBy); 
         strMailFrom=strarrFromEmail[0]; 
         strPassword=strarrFromEmail[1]; 
         System.out.println("strFrom="+strMailFrom + ", strPassword="+strPassword); 
         countCSVSendTo=0; 
         while((line2=br2.readLine())!=null){ 
         System.out.println("line2="+line2.toString()); 
         countCSVSendTo+=1; 
         String[] strMailTo=line2.split("\n"); 
         strSendTo=strMailTo[0]; 
          String subject = "Test mail"; 
          String message=""; 

          //inline image 
          Map<String,String> inlineImage=new HashMap<String,String>(); 
          inlineImage.put("image1", "Logo.jpg"); 

          frmEmailer mailer = new frmEmailer(); 
          String filename=txtHTMLFile.getText(); 
          System.out.println("filename=" + filename);   
          try{ 
          message=mailer.readHTML(filename,message); 
          mailer.sendHtmlEmail(strhost, strport, strMailFrom, strPassword, strSendTo, 
               subject, message,inlineImage); 
          System.out.println("Email sent successfully."); 
          EmailCount++; 
          pm.setProgress(EmailCount); 
          pm.setNote("Sent " + EmailCount + " Mails."); 
          Random rand = new Random(); 
          int randomNum = rand.nextInt((8 - 3) + 1) + 3; 

          System.out.println(randomNum); 

          Thread.sleep(randomNum*1000); //1000 microseconds = 1 seconds. 

           if(countCSVSendTo==2){ 
           break;  
           } 
          }catch (Exception ex) { 
           System.out.println("Failed to sent email."); 
           ex.printStackTrace(); 
          } 
         } 

        //System.out.println("countcsvfrom="+countCSVFrom + ", line1=" + line1.toString()); 

        System.out.println("countcsvsendto="+countCSVSendTo); 
        } 
        JOptionPane.showMessageDialog(null, "Emails sent successfully!"); 
        btnSendEmailsNow.setEnabled(true); 
       }catch(FileNotFoundException fnfe){ 
         fnfe.printStackTrace(); 
         JOptionPane.showMessageDialog(null, "Failed to send Email!"); 
       }catch(IOException ioe){ 
        JOptionPane.showMessageDialog(null, "Failed to send Email!"); 
        ioe.printStackTrace(); 
       } 
      } 
    }.start(); 

    }   

您可以轻松地做到这一点的事情与ProgressMonitor