spring boot中@ConfigurationProperties的使用

liaowenhui.datasource：
　　validationQuery: SELECT 1
　　jdbcUrl:jdbc:mysql://192.168.xx.xx:3306/xxx?useUnicode=true&characterEncoding=UTF-8
　　jdbcUserName: liaowenhui
　　jdbcUserPassword: liaowenhui

//从配置信息中搜索前缀为liaowenhui.datasource的信息，读取并自动封装成实体类
@ConfigurationProperties(prefix = "liaowenhui.datasource")
public class DataSourceProperties {

    private String validationQuery;
    private String jdbcUrl;
    private String jdbcUserName;
    private String jdbcUserPassword;

    public String getValidationQuery() {
        return validationQuery;
    }

    public void setValidationQuery(String validationQuery) {
        this.validationQuery = validationQuery;
    }

    public String getJdbcUrl() {
        return jdbcUrl;
    }

    public void setJdbcUrl(String jdbcUrl) {
        this.jdbcUrl = jdbcUrl;
    }

    public String getJdbcUserName() {
        return jdbcUserName;
    }

    public void setJdbcUserName(String jdbcUserName) {
        this.jdbcUserName = jdbcUserName;
    }

    public String getJdbcUserPassword() {
        return jdbcUserPassword;
    }

    public void setJdbcUserPassword(String jdbcUserPassword) {
        this.jdbcUserPassword = jdbcUserPassword;
    }
}

@Configuration
@EnableConfigurationProperties({DataSourceProperties.class })
public class DataSourceConfig {
    private static final Logger logger = LoggerFactory.getLogger(DataSourceConfig.class);
    @Bean(destroyMethod = "close")
    @RefreshScope
    public DataSource dataSourcePgProduct(DataSourceProperties dataSourceProperties) throws SQLException {
        logger.debug("数据库连接信息：{}　", dataSourceProperties.getJdbcUrl());
        DruidDataSource dataSource = new DruidDataSource();
        dataSource.setUrl(dataSourceProperties.getJdbcUrl());
        dataSource.setUsername(dataSourceProperties.getJdbcUserName());
        dataSource.setPassword(dataSourceProperties.getJdbcUserPassword());
        dataSource.setValidationQuery(dataSourceProperties.getValidationQuery());
　　　　　......
        dataSource.init();
        return dataSource;
    }