JAXB和Guice:如何集成和可视化

Question

我发现JAXB和Guice一起使用是可能的，但具有挑战性:两个库都"争夺"对对象创建的控制，您必须小心避免循环依赖，并且所有JAXB Adapters和Guice Providers之类的东西可能会变得混乱。我的问题是:

• 如何处理这个配置?什么一般策略/经验法则可以应用?
• 你能给我指出一个好的教程或编写良好的示例代码吗?
• 如何可视化依赖关系(包括Adapters和Providers)?

Answer 1

对于一些示例代码，这里完成了一些示例工作:http://jersey.576304.n2.nabble.com/Injecting-JAXBContextProvider-Contextprovider-lt-JAXBContext-gt-with-Guice-td5183058.html

在写"错误?"的那行，输入推荐行。

I是这样的:

@Provider 
public class JAXBContextResolver implements ContextResolver<JAXBContext> { 
    private JAXBContext context; 
    private Class[] types = { UserBasic.class, UserBasicInformation.class }; 
    public JAXBContextResolver() throws Exception { 
         this.context = 
       new JSONJAXBContext( 
         JSONConfiguration.natural().build(), types); 
     } 
    public JAXBContext getContext(Class<?> objectType) { 
        /* 
        for (Class type : types) { 
            if (type == objectType) { 
                return context; 
            } 
        } // There should be some kind of exception for the wrong type.
        */ 
        return context; 
    } 
} 
//My resource method: 
    @GET 
    @Produces({MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON}) 
    public JAXBElement<UserBasic> get(@QueryParam("userName") String userName) { 
        ObjectFactory ob = new ObjectFactory(); 
        UserDTO dto = getUserService().getByUsername(userName); 
        if(dto==null) throw new NotFoundException(); 
        UserBasic ub = new UserBasic(); 
        ub.setId(dto.getId()); 
        ub.setEmailAddress(dto.getEmailAddress()); 
        ub.setName(dto.getName()); 
        ub.setPhoneNumber(dto.getPhoneNumber()); 
        return ob.createUserBasic(ub); 
    } 
//My Guice configuration module: 
public class MyServletModule extends ServletModule { 

    public static Module[] getRequiredModules() { 
        return new Module[] { 
                new MyServletModule(), 
                new ServiceModule(), 
                new CaptchaModule() 
         }; 
    } 

    @Override 
    protected void configureServlets() { 
        bind(UserHttpResource.class); 
        bind(JAXBContextResolver.class);
        serve("/*").with(GuiceContainer.class); 
    } 
}