Implementation function: automatically load the properties content into memory when the service is started, and call the @ bean annotation method loadProps();

If there is no content in the property when using (getData method call) after startup, call again.

The code is as follows:

import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;

import javax.annotation.Resource;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Component;


@Configuration
@Component
public class TranNameRead {
    private String Tag = "TranNameRead";
    @Resource
    private BusinessLogger Log;
    private Properties props;
    @Resource
    private PostFactory postFactory;
    public Properties getInstance() throws IOException{
        if(props==null){
            this.loadProps();
        }
        return props;
    }
    @Bean(name="TranNameRead")
    public Object loadProps()  {
        Log.log(Tag, "Start loading properties content.......");
        ......//Ten thousand words are omitted here
       return trannameList;
       }
    public String getData(String key) throws IOException{
       return getInstance().getProperty(key);
    }
}

The problem is: after calling @ bean annotation manually, the method cannot be called. Who can tell the reason?

Later, a different way was called to solve the problem.

public class TranNameRead {
    private String Tag = "TranNameRead";
    @Resource
    private BusinessLogger Log;
    private Properties props;
    @Resource
    private PostFactory postFactory;
    public Properties getInstance() throws IOException{
        if(props==null){
            loadPropsAgain();
        }
        return props;
    }
    @Bean(name="TranNameRead")
    public Object loadProps()  {
        return loadProperties();
       }
    public Object loadPropsAgain()  {
        return loadProperties();
    }
    private Object loadProperties() {
        Log.log(Tag, "Start loading properties content.......");
        List<Map> trannameList =null;;
      }
    }

Just... Thank you for your comments.