@PropertySource和UTF-8属性文件 [英] @PropertySource and UTF-8 properties file

问题描述

是否可以使用 @PropertySource 注释来配置加载属性文件时必须使用的编码？

Is it possible, using @PropertySource annotation, to configure the encoding that has to be used to load the property file?

一个例子来澄清我的问题

An example to clarify my problem

@Configuration
@PropertySource("classpath:/myprop.properties")
public class MyApplicationContext {

    @Autowired(required = true)
    private Environment env;

    @Bean
    public MyBean myBean() {
       return new MyBean(env.getRequiredProperty("application.name"));
    }

}

myprop .properties 是一个 UTF-8 文件，但无论什么，application.name解释为 8859-1 。

myprop.properties is aUTF-8 file but, no matter what, "application.name" is interpreted as ISO-8859-1.

解决方法是在属性文件中转义特殊字符，但是可以使用旧的 context：property-placeholder 所以我认为应该可以用 @PropertySource

The workaround is to escape special chars in the properties file, but setting the encoding was possible with the old context:property-placeholder so I think it should be possible to do the same with @PropertySource

推荐答案

旧的上下文：property-placeholder
可能对 @PropertySource

@PropertySource 和上下文：property-placeholder 是两个完全不同的组件。 @PropertySource 使用 ApplicationContext 注册 .properties 环境加载 @Configuration 类，而 context：property-placeholder 注册 PropertyPlaceholderConfigurer 或 PropertySourcesPlaceholderConfigurer bean执行占位符解析。这个bean将访问 .properties 文件中声明的属性以及包含 Environment 。

@PropertySource and context:property-placeholder are two completely different components. @PropertySource registers a .properties file with the ApplicationContext and Environment loading the @Configuration class, while context:property-placeholder registers a PropertyPlaceholderConfigurer or PropertySourcesPlaceholderConfigurer bean to perform placeholder resolution. This bean will have access to the the properties in the .properties files declared with it and to the properties available to the containing Environment.

您无法对 @PropertySource 使用的编码做任何事。它将使用系统默认值。

There's nothing you can do about the encoding used for @PropertySource. It will use the system default.

您可以随时自行声明一个 PropertySourcesPlaceholderConfigurer bean（ static @Bean 方法），声明一些 .properties 文件和编码。但请注意，这些属性将不能通过环境。

You can always declare a PropertySourcesPlaceholderConfigurer bean yourself (with a static @Bean method), declare some .properties files and an encoding. Note, however, that these properties won't be available through the Environment.

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