Class property value after the agency is gone?

Class property value after the agency is gone?

Foreword

When using SpringBoot development, if we are to use custom values, our common practice is to Ymlconfigure the properties profile, and then configure the appropriate configuration file to obtain the property value in the class. For example we Ymlhave the following attribute values

test:
  value: secondAgent

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Then we can make the following configuration can be removed from class values

@Component
public class GetValue {

    @Value("${test.value}")
    public String testValue;
}

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Such automatic injection directly through the attribute values ​​can be obtained at the time of use

@Autowired
private GetValue getValue;

@Override
public void run(String... args) throws Exception {
    System.out.println(getValue.testValue);
}

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Problem Description

But once developed, after the project start how to obtain values ​​are not acquired. In the retrospective case file was last modified recently found added affairs. Transaction Management added the entire service folder. And this profile folder out of service after the value can get to.

- service
	- common
		- 配置类所在的位置

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Configuration class something like

@Data
@Component
public class GetValue {

    @Value("${test.value}")
    public String testValue;
}

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Note the non-standard coding here where property values ​​using a modification of the public, but did not use the time to get the value through the get () method

It will generate a proxy class on the basis of such a transaction at the time of use, and the proxy class attribute value is passed, but come. We can see the proxy configuration class as follows

And if we get this time directly through automatically injected into a proxied class, and call the proxy class only calls the method to be able to reach the level of the original class, if the acquisition is to obtain the property value directly visible. So this time, if we called directly getValue.testValueto obtain value can only be null.

Solution

1. Or will such proxy files out of the folder. Does not generate a proxy class
2. Using the get()method of retrieving properties

Code address