SpringBean生命周期之InitializingBean,初始化bean

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1 yml文件

weixin:appid: aaaaaapartner: 12313214partnerkey: ccccccert: C:\\Users\\lenovo\\Desktop

2 Bean初使化

import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;@Component
public class ConstantPropertiesUtils implements InitializingBean {@Value("${weixin.appid}")private String appid;@Value("${weixin.partner}")private String partner;@Value("${weixin.partnerkey}")private String partnerkey;@Value("${weixin.cert}")private String cert;public static String APPID;public static String PARTNER;public static String PARTNERKEY;public static String CERT;@Overridepublic void afterPropertiesSet() throws Exception {APPID = appid;PARTNER = partner;PARTNERKEY = partnerkey;CERT = cert;}
}

3 使用，在spring环境下，直接像工具类那样调用，不需要@Autowired

System.out.println("ConstantPropertiesUtils.APPID = " + ConstantPropertiesUtils.APPID);
System.out.println("ConstantPropertiesUtils.PARTNER = " + ConstantPropertiesUtils.PARTNER);
System.out.println("ConstantPropertiesUtils.PARTNERKEY = " + ConstantPropertiesUtils.PARTNERKEY);
System.out.println("ConstantPropertiesUtils.CERT = " + ConstantPropertiesUtils.CERT);

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