动态修改log4j日志级别

• 设置包的日志等级

Level level = Level.toLevel(Level.DEBUG);
Logger logger = LogManager.getLogger(“package”);
logger.setLevel(level);

• 设置全局日志等级

Level level = Level.toLevel(Level.DEBUG);
LogManager.getRootLogger().setLevel(level);

• http控制

@Path("/conf")
@Component("configurationResource")
public class ConfigurationResource {
    @GET
    @Produces(MediaType.APPLICATION_XML)
    @Path("/log/package/{package}/{level}")
    public Response index(@PathParam("package") String p, @PathParam("level") String l) {
        Level level = Level.toLevel(l);
        Logger logger = LogManager.getLogger(p);
        logger.setLevel(level);
        return Response.ok().build();
    }

    @GET
    @Produces(MediaType.APPLICATION_XML)
    @Path("/log/root/{level}")
    public Response index(@PathParam("level") String l) {
        Level level = Level.toLevel(l);
        LogManager.getRootLogger().setLevel(level);
        return Response.ok().build();
    }

}