为什么在我的情况下@ConfigurationProperties不覆盖默认值? [英] Why is @ConfigurationProperties not overriding defaults in my case?

问题描述

我希望spring boot从我的application.properties中的条目读取我的配置，但是它们没有被激活.我的application.properties包含以下条目:

I want spring boot to read my config from entries in my application.properties but they are not activated. My application.properties contains these entries:

foo.user=nobody
foo.pass=notshared

我可以看到该文件正在被读取(我只有两次文件:一次在src树中，一次自动在bin中复制.这些文件相等):

I can see that this file is being read (I only have the file twice: once in the src-tree and once copied automatically in bin. The files are equal):

2015-03-23 21:55:18.199 DEBUG 25004 --- [main] o.s.b.c.c.ConfigFileApplicationListener  : Loaded config file 'classpath:/application.properties' 

我有一个名为FooConfig的类:

I have a class called FooConfig:

@Component
@ConfigurationProperties(prefix = "foo")
public class FooConfig {
  private String user = "default";
  private String pass = "default";
...
}

我有两个值的getter和setter方法. 我将这个配置类自动连接到我的代码中:

I have getters and setters for both values. I AutoWire this config class into my code:

@Component
public class FooFunctions {
    @Autowired
    public FooFunctions(FooConfig fooConfig) {
        log.debug("user={}", fooConfig.getUser());
...

问题是打印的是默认值"default"，而不是来自application.properties的值. 有什么提示吗?不幸的是，我还不能使用执行器来显示配置属性，因为这是一个非Web应用程序. 我会在Spring Boot 1.2.2上尝试所有这些操作

And the problem is that the default value "default" is printed and not the value from the application.properties. Any hints ? Unfortunately I can not use the actuator yet to display configuration properties because this is a non-web application. I try all of this on spring boot 1.2.2

推荐答案

为了制作

@ConfigurationProperties(prefix = "foo")

注释工作，您的spring boot应用程序必须具有

annotation work, your spring boot application must have

@EnableConfigurationProperties

注释集.

无需在 ConfigurationProperties bean上设置 @Component 注释.

There is no need to set @Component annotation on ConfigurationProperties bean.

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