例如，文件DataSourceConfig.java

package com.apress.demo;

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

@Component
@ConfigurationProperties(prefix = "jdbc")
public class DataSourceConfig {
    private String driver;
    private String url;
    private String username;
    private String password;

    @Override
    public String toString() {
        return "DataSourceConfig [driver=" + driver + ", url=" + url + ", username=" + username + "]";
    }

    public String getDriver() {
        return driver;
    }

    public void setDriver(String driver) {
        this.driver = driver;
    }

    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = url;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

}

这通知怎么办？