java - Apache 公共(public)邮件 : how get new line in simple email?

Question

愚蠢的新手问题。我可以使用生成电子邮件正文，

email.setMsg("Paragraph 1 goes here."); 

输出:

Paragraph 1 goes here.

现在我想要生成的内容如下:

Paragraph 1 goes here.
Paragraph 2 goes here.

但是如果我使用:

email.setMsg("Paragraph 1 goes here."); 
email.setMsg("Paragraph 2 goes here."); 

我得到的是:

Paragraph 2 goes here.

如何添加手动换行符？

Answer 1

假设您使用的是 UNIX 系统:

email.setMsg("Paragraph 1 goes here.\nParagraph 2 goes here."); 

为了使代码平台不可知，您可以使用System.getProperty("line.separator")查找换行符:

String ENDL = System.getProperty("line.separator");
email.setMsg("Paragraph 1 goes here." + ENDL + "Paragraph 2 goes here."); 

如果您使用 HTML 电子邮件:

email.setMsg("<p>Paragraph 1 goes here.</p><p>Paragraph 2 goes here.</p>");