Spring Dynamic Constructor Value

Question

My English is not good. Please understand..

//This is my Spring-mvc-based Controller
@Controller

public class DownloadManageController {
    private DownloadManageService downService;

    @Autowired
    public void setPackService(DownloadManageService downService) {
        this.downService = downService;
    }
}

//This is my Spring-Bean which should have a dynamic value of contructor
Component

public class DownloadManageService {
    private Log log = LogFactory.getLog(DownloadManageService.class);
    private FileAccessObject downloadFileAccessObj = null;

    DownloadManageService(String downloadInfoFile) {
        this.downloadFileAccessObj = new FileAccessObjectImpl(
                "d:/dat/download/" + downloadInfoFile);
    }

}

When Service inject into controller... I'd like to make downloadInfoFile variable dynamic depends on a request parameter.

duffymo · Accepted Answer · 2012-02-28 02:09:51Z

1

I'd recommend that you create a factory class into which you can pass the path you wish.

answered Feb 28, 2012 at 2:09

duffymo

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plucury · Accepted Answer · 2012-02-28 02:46:41Z

0

If it was I,I would do it as follow:

public class DownloadManageService {
    private Log log = LogFactory.getLog(DownloadManageService.class);
    private FileAccessObject downloadFileAccessObj = null;

    public DownloadManageService() {
    }

    public void setDownloadFileAccessObj... 
}

public class DownloadManageController {
    private DownloadManageService downService;

    @Autowired
    public void setPackService(DownloadManageService downService) {
        this.downService = downService;
    }

    public void exec(){
        ...
        this.downService.setDownloadFileAccessObj(new FileAccessObjectImpl(...))
        ...
    }
}

answered Feb 28, 2012 at 2:46

plucury

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