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Java mailto非法字符冒号?

[英]Java mailto Illegal character colon?

我试图发送带有附件的电子邮件,但一直在说:

 Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: Illegal character in opaque part at index 64: mailto:recipient@mailserver.com?subject=ThePDFFile&attachment=C:\Users\Rascal\AppData\Local\Temp\FreelancerList-16-12-2014_09-227568200505392670736.doc

Java代码:

Desktop desktop = Desktop.getDesktop(); 
        String message = "mailto:recipient@mailserver.com?subject=ThePDFFile&attachment=\""+path; 
        URLEncoder.encode(message, "UTF-8");
        URI uri = URI.create(message); 
        desktop.mail(uri);    

应该是冒号吧? 但为什么???

您正在调用URLEncoder.encode ,但是忽略了结果。 我怀疑您正在尝试实现以下目标:

String encoded = URLEncoder.encode(message, "UTF-8");
URI uri = URI.create(encoded);

...尽管此时您还将在mailto部分之后对冒号进行编码。 我怀疑您真的想要这样的东西:

String query = "subject=ThePDFFile&attachment=\""+path;
String prefix = "mailto:recipient@mailserver.com?";
URI uri = URI.create(prefix + URLEncoder.encode(query, "UTF-8"));

甚至只编码值:

String query = "subject=" + URLEncoder.encode(subject, "UTF-8");
    + "&attachment=" + URLEncoder.encode(path, "UTF-8"));
URI uri = URI.create("mailto:recipient@mailserver.com?" + query);

...或者当然可以从各个不同的部分分别创建URI

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