一种可能的解决方法是添加内部REST请求的权限。在您的插件的pom.xml文件中，需要添加以下依赖项：

    com.atlassian.plugins.rest
    atlassian-rest-common
    ${atlassian-rest-common.version}
    provided

然后，您可以使用以下代码在插件中进行内部REST请求：

import com.atlassian.sal.api.pluginsettings.PluginSettingsFactory;
import com.atlassian.plugins.rest.common.security.AuthenticationRequiredException;
import com.atlassian.plugins.rest.common.security.CorsAllowed;
import com.atlassian.plugins.rest.common.security.RequestAuthenticationProvider;
import com.atlassian.plugins.rest.common.security.jersey.XsrfCheckInterceptor;
import com.atlassian.sal.api.pluginsettings.PluginSettings;

import javax.ws.rs.*;
import javax.ws.rs.core.Response;

@Path("/myresource")
@Consumes({ "application/json" })
@Produces({ "application/json" })
public class MyResource {
    private final PluginSettingsFactory pluginSettingsFactory;

    public MyResource(PluginSettingsFactory pluginSettingsFactory) {
        this.pluginSettingsFactory = pluginSettingsFactory;
    }

    @GET
    @Path("/test")
    @AuthenticationRequired
    @XsrfCheck
    public Response test() {
        PluginSettings settings = pluginSettingsFactory.createGlobalSettings();
        // Do something with plugin settings
        return Response.ok().build();
    }
}

请注意，您需要将插件设置工厂传递给该类的构造函数，以便可以在内部REST请求中访问插件设置。 另外，您需要为您的REST端点添加必要的身份验证和XSRF检查。