SpringBean生命周期之InitializingBean,初始化bean

小哇6662024-03-05 13:37

1 yml文件

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weixin:
  appid: aaaaaa
  partner: 12313214
  partnerkey: ccccc
  cert: C:\\Users\\lenovo\\Desktop

2 Bean初使化

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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;

    @Override
    public 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

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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);