不同类型的资源解析器之间的区别（AEM上下文）

Question

可以通过三种方式在AEM中获取资源解析器。

1. 行政资源解析器
2. 具有系统用户的服务资源解析器
3. 来自servlet中请求的资源解析器。

让我们考虑一下这种情况。

1. 获取管理资源解析器
2. 获取以admin作为子服务用户的服务资源解析器。
3. 在邮递员中说出提供“基本身份验证”的管理员凭据后，从servlet中的请求中解析资源（作者点击）。

这三个应该不一样吗？我的意思是快速又肮脏的代码。请让我知道您的想法。

@Component(service = Servlet.class,
        property = {
                Constants.SERVICE_DESCRIPTION + "=Goda Servlet for Testing Resource Resolver",
                "sling.servlet.methods=" + HttpConstants.METHOD_GET,
                "sling.servlet.paths=" + "/bin/resource-resolver-testing"
        })
public class GodaServletResourceResolver extends SlingSafeMethodsServlet {

    public static final Logger LOGGER = LoggerFactory.getLogger(GodaServletResourceResolver.class);

    private static final long serialVersionUID = 1L;

    @Reference
    private ResourceResolverFactory resourceResolverFactory;

    @Override
    protected void doGet(final SlingHttpServletRequest request,
                         final SlingHttpServletResponse response) throws ServletException, IOException {
        final Resource resource = request.getResource();
        response.setContentType("text/plain");
        final ResourceResolver resourceResolverFromResourceWhichIsAgainFromTheRequest = request.getResource().getResourceResolver();
        LOGGER.debug("Resource Resolver from resource {}", resourceResolverFromResourceWhichIsAgainFromTheRequest);
        final ResourceResolver resourceResolverFromServletRequest = request.getResourceResolver();
        LOGGER.debug("Resource Resolver from request {}", resourceResolverFromServletRequest);

        Map<String, Object> resolverParams = new HashMap<>();
        resolverParams.put(ResourceResolverFactory.SUBSERVICE, "Goda Servlet for Testing Resource Resolver");
        ResourceResolver serviceResourceResolverFromResourceResolverFactory = null;
        ResourceResolver adminResourceResolverFromResourceResolverFactory = null;
        try {
            serviceResourceResolverFromResourceResolverFactory = resourceResolverFactory.getServiceResourceResolver(resolverParams);
            adminResourceResolverFromResourceResolverFactory = resourceResolverFactory.getAdministrativeResourceResolver(null);
        } catch (LoginException e) {
            LOGGER.error(e.getMessage());
        }
        LOGGER.debug("Resource Resolver from the resource resolver factory is {}", serviceResourceResolverFromResourceResolverFactory);
        LOGGER.debug("Administrative Resource Resolver from the resource resolver factory is {}", adminResourceResolverFromResourceResolverFactory);

        LOGGER.debug("But are all these resource resolvers the same?");
        LOGGER.debug("Lets compare");
        LOGGER.debug("Is the resource based resourceResolver same as the request based one? {}",
                resourceResolverFromResourceWhichIsAgainFromTheRequest == resourceResolverFromServletRequest);
        LOGGER.debug("Is the resource based resourceResolver same as the ResourceResolverFactory based one? {}",
                resourceResolverFromResourceWhichIsAgainFromTheRequest == serviceResourceResolverFromResourceResolverFactory);
        LOGGER.debug("Is the resource based resourceResolver same as the ResourceResolverFactory based one? {}",
                resourceResolverFromResourceWhichIsAgainFromTheRequest == adminResourceResolverFromResourceResolverFactory);


        response.getWriter().write("Title = " + resource.getValueMap().get(JcrConstants.JCR_TITLE) + "\n");
        response.getWriter().write("But are all these resource resolvers the same?" + "\n");
        response.getWriter().write("Lets compare" + "\n");
        response.getWriter().write("Is the resource based resourceResolver same as the request based one? " +
                (resourceResolverFromResourceWhichIsAgainFromTheRequest == resourceResolverFromServletRequest) + "\n");
        response.getWriter().write("Is the resource based resourceResolver same as the ResourceResolverFactory based one? " +
                (resourceResolverFromResourceWhichIsAgainFromTheRequest == serviceResourceResolverFromResourceResolverFactory) + "\n");
        response.getWriter().write("Is the resource based resourceResolver same as the ResourceResolverFactory (Administrative) based one? "+
                (resourceResolverFromResourceWhichIsAgainFromTheRequest == adminResourceResolverFromResourceResolverFactory));
    }
}