Question

我的bean上的setter似乎无法正常工作。

这是我的Spring java配置，SpringConfig.java：

@Configuration
@ComponentScan("com.xxxx.xxxxx")
public class SpringConfig {

    @Bean(name="VCWebserviceClient")
    public VCWebserviceClient VCWebserviceClient() {
        VCWebserviceClient vCWebserviceClient = new VCWebserviceClient();
        vCWebserviceClient.setSoapServerUrl("http://localhost:8080/webservice/soap/schedule");

        return vCWebserviceClient;
}

VCWebserviceClient.java：

@Component
public class VCWebserviceClient implements VCRemoteInterface {

    private String soapServerUrl;

    public String getSoapServerUrl() {
        return soapServerUrl;
    }

    public void setSoapServerUrl(String soapServerUrl) {
        this.soapServerUrl = soapServerUrl;
    }

    // Implemented methods...

}

我的app.java：

ApplicationContext context = new AnnotationConfigApplicationContext(SpringConfig.class);
VCWebserviceClient obj = (VCWebserviceClient) context.getBean("VCWebserviceClient");

System.out.println("String: "+obj.getSoapServerUrl()); // returns NULL

为什么obj.getSoapServerUrl（）返回NULL？

This example显示了它应该如何运作。

Answer 1

VCWebserviceClient返回的实例不是您的应用程序实际使用的实例。这是Spring知道什么类实现的一种方式。

任何方式，对于您的问题，请使用@Value（http://docs.spring.io/spring/docs/3.0.x/reference/expressions.html）



@Component
public class VCWebserviceClient implements VCRemoteInterface {

    // spring resolves the property and inject the result
    @Value("'http://localhost:8080/webservice/soap/schedule'")
    private String soapServerUrl;

    // spring automatically finds the implementation and injects it
    @Autowired
    private MyBusinessBean myBean;

    public String getSoapServerUrl() {
        return soapServerUrl;
    }

    public void setSoapServerUrl(String soapServerUrl) {
        this.soapServerUrl = soapServerUrl;
    }

    // Implemented methods...

@Component public class VCWebserviceClient implements VCRemoteInterface { // spring resolves the property and inject the result @Value("'http://localhost:8080/webservice/soap/schedule'") private String soapServerUrl; // spring automatically finds the implementation and injects it @Autowired private MyBusinessBean myBean; public String getSoapServerUrl() { return soapServerUrl; } public void setSoapServerUrl(String soapServerUrl) { this.soapServerUrl = soapServerUrl; } // Implemented methods...

Spring JavaConfig setter无法正常工作

1 个答案: