Spring Boot EnvironmentPostProcessor未加载application.properties

import org.springframework.boot.SpringApplication;
import org.springframework.boot.env.EnvironmentPostProcessor;
import org.springframework.core.env.ConfigurableEnvironment;
import org.springframework.core.env.PropertiesPropertySource;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.support.PropertiesLoaderUtils;

import java.io.IOException;
import java.util.Properties;

public class MyEnvironmentPostProcessor implements EnvironmentPostProcessor {

    private static final String PROPERTIES_FILE = "application.properties";

    @Override
    public void postProcessEnvironment(ConfigurableEnvironment environment, SpringApplication application) {
        try {
            // 加载application.properties文件
            ClassPathResource resource = new ClassPathResource(PROPERTIES_FILE);
            Properties properties = PropertiesLoaderUtils.loadProperties(resource);

            // 将加载的配置文件添加到环境对象中
            environment.getPropertySources().addLast(new PropertiesPropertySource(PROPERTIES_FILE, properties));
        } catch (IOException e) {
            // 处理加载文件失败的情况
            e.printStackTrace();
        }
    }
}