Spring-Boot 中 application.properties 属性的 UTF-8 编码 [英] UTF-8 encoding of application.properties attributes in Spring-Boot

问题描述

在我的 application.properties 中，我添加了一些自定义属性.

In my application.properties I add some custom attributes.

custom.mail.property.subject-message=This is a ä ö ü ß problem

在这个类中，我有自定义属性的表示.

In this class I have the representation of the custom attributes.

@Component
@ConfigurationProperties(prefix="custom.mail.property")
public class MailProperties {
    private String subjectMessage;
    public String getSubjectMessage() {
        return subjectMessage;
    }
    public void setSubjectMessage(String subjectMessage) {
        this.subjectMessage = subjectMessage;
    }

这里我使用了我的MailProperties:

@Service
public class SimpleUnknownResponseMessage extends MailProperties implements UnknownResponseMessage{

    private JavaMailSender javaMailSender;

    @Autowired
    public SimpleUnknownResponseMessage(JavaMailSender javaMailSender) {
        this.javaMailSender = javaMailSender;
    }

    @Override
    public void placeUnknownResponse(BookResponse bookResponse) {
        MimeMessage message = javaMailSender.createMimeMessage();
        try {
            MimeMessageHelper helper = new MimeMessageHelper(message, "UTF-8");
            helper.setSubject(this.getSubjectMessage());            
            javaMailSender.send(message);

        } catch (MessagingException e) {
            e.printStackTrace();
        }
    }

在调试时我可以看到我的 this.getSubjectMessage() 变量里面有这个值:这是一个 ä ö ü à 问题.因此，在发送邮件之前，我已经遇到了 UTF-8 编码问题.

While debugging I can see that my this.getSubjectMessage() variable has this value inside: This is a ä ö ü à problem. So before sending my mail I already have an UTF-8 encoding problem.

我已经检查了 application.properties 文件的编码及其 UTF-8.

I already checked the encoding of the application.properties file and its UTF-8.

我的 IDE(STS/Eclipse)和项目属性也设置为 UTF-8.

My IDE(STS/Eclipse) and the project properties are also set on UTF-8.

如何为 application.properties 文件中自定义属性的文本设置 UTF-8 编码?

How can I set the UTF-8 encoding for the text of my custom attributes in the application.properties file?

推荐答案

正如评论中已经提到的那样，.properties 文件预计将按照 ISO 8859-1 进行编码.可以使用 unicode 转义符来指定其他字符.还有一个工具可用于执行转换.例如，这可以在自动构建中使用，以便您仍然可以在源代码中使用您喜欢的编码.

As already mentioned in the comments .properties files are expected to be encoded in ISO 8859-1. One can use unicode escapes to specify other characters. There is also a tool available to do the conversion. This can for instance be used in the automatic build so that you still can use your favorite encoding in the source.

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