使用spring从属性文件设置int值

Question

尝试使用spring绑定属性文件中的int值

Failed to instantiate [org.springframework.amqp.rabbit.connection.ConnectionFactory]: 
Factory method 'connectionFactory' threw exception; nested exception is java.lang.NumberFormatException: For input string: \"${rabitmq.server.host.connectionclosetimeout}\"
Caused by: java.lang.NumberFormatException: For input string: \"${rabitmq.server.host.connectionclosetimeout}\""}}

rabitmq.server.host.connectionclosetimeout=30000

@Value("${rabitmq.server.host.connectionclosetimeout}")
private int connectionCloseTimeOut; 

@Configuration
@PropertySource("classpath:config/service.properties")
public class RabbitMqConfiguration {

    @Value("${rabitmq.server.host.connectionclosetimeout}")
    private Integer connectionCloseTimeOut;

    /**
     * Establishing connection
     * 
     * @return
     */
    @Bean
    public ConnectionFactory connectionFactory() {
        CachingConnectionFactory connectionFactory = new CachingConnectionFactory(host);
        connectionFactory.setCloseTimeout(connectionCloseTimeOut);
        return connectionFactory;
    }       

}

@Bean
public static PropertySourcesPlaceholderConfigurer placeHolderConfigurer() {
    return new PropertySourcesPlaceholderConfigurer();
}

@Value("#{new Integer.parseInt('${rabitmq.server.host.connectionclosetimeout}')}")
private int connectionCloseTimeOut; 

它也不起作用。

请建议什么是使它工作的方法。

Answer 1

你的说明不对。这应该行得通

@Value("#{ T(java.lang.Integer).parseInt('${rabitmq.server.host.connectionclosetimeout}') }")
private int connectionCloseTimeOut; 

试试看