Spring Session JDBC - 使用@Autowired 对象时出错

Question

In order to save the sessions in a Database, I have implemented the Spring Session JDBC using this example here . I am having problems using the @Autowired with session scope: I have Java Class Dump as follow:

public class Dump 
{
    private String someName;

    public Dump(){}

    public Dump(String someName) {
        this.someName = someName;
    }

    public String getSomeName() {
        return someName;
    }

    public void setSomeName(String someName) {
        this.someName = someName;
    }
}

And then I am registering this bean in a SESSION_SCOPE as following:

@Configuration
public class DumpConfig{

    @Bean
    @Scope(value = WebApplicationContext.SCOPE_SESSION, proxyMode = ScopedProxyMode.TARGET_CLASS)
    public Dump getDump() {
        return new Dump();
    }

}

In a controller I am wiring it and trying to use:

@Controller
@RequestMapping("/")
public class HomeController {

    @Autowired
    private Dump dump;

    @GetMapping("/dump")
    @ResponseBody
    public String demo() {
        return dump.getSomeName();
    }
}

When I try to run I get this error:

Failed to convert from type [java.lang.Object] to type [byte[]] for value 'Dump@35b2136e' nested exception is org.springframework.core.serializer.support.SerializationFailedException

Answer 1

Please refer to the video in the below mentioned link(around 1:14) the speaker says that this issue is resolved in spring 3.0 by providing a proxy of non-serializable beans, which obtains an instance from the current application context (on deserialization).

https://www.infoq.com/presentations/Whats-New-in-Spring-3.0