HiLog

HiLog is a log system that provides logging for the system framework, services, and applications to record information on user operations and system running status. You can run the hilog commands to query related log information.

Environment Setup

The environment for OpenHarmony Device Connector (hdc) has been set up. For details, see Environment Setup.
The devices are properly connected and hdc shell is executed.

Commands

Short Option	Long Option	Parameter	Description
-h	--help	-	Shows help information.
Default	Default	-	Performs a blocking read on logs, with no exiting after the read finishes.
-x	--exit	-	Performs a non-blocking read on logs, with exiting after the read finishes.
-g	-	-	Checks the buffer size for logs of a specified type. This option is used together with -t, which specifies a log type. By default, the app or core types are used.
-G	--buffer-size	<size>	Sets the size of the buffer for logs of a specified type. This option is used together with -t, which specifies a log type. By default, the app or core types are used. The unit can be B, KB, MB, or GB. The value ranges from 64 KB to 16 MB.
-r	-	-	Clears the buffer for logs of a specified type. This option is used together with -t, which specifies a log type. By default, the app or core types are used.
-p	--privacy	<on/off>	Specifies whether to enable privacy for logs during system debugging.
		on	Enables privacy so that parameters are displayed as <private> in printed logs.
		off	Disables privacy so that parameters are displayed as they are in printed logs.
-k	-	<on/off>	Specifies whether to enable kernel logging.
		on	Enables kernel logging.
		off	Disables kernel logging.
-s	--statistics	-	Shows statistics. This option must be used together with -t or -D.
-S	-	-	Clears statistics. This option must be used together with -t or -D.
-Q	-	<control-type>	Specifies whether to enable the default quota for flow control.
		pidon	Enables process flow control.
		pidoff	Disables process flow control.
		domainon	Enables domain flow control.
		domainoff	Disables domain flow control.
-L	--level	<level>	Sets the log level, for example, -L D/I/W/E/F.
-t	--type	<type>	Sets the log type, for example, -t app/core/init/only_prerelease. app indicates the application log, core indicates the system log, init indicates the startup log, and only_prerelease indicates the log printed before the Release version.
-D	--domain	<domain>	Sets the domain.
-T	--tag	<tag>	Sets the tag.
-a	--head	<n>	Shows the first several lines of logs. The parameter <n> indicates the number of first lines to show.
-z	--tail	<n>	Shows the last several lines of logs. The parameter <n> indicates the number of last lines to show.
-P	--pid	<pid>	Identifies a process.
-e	--regex	<expr>	Prints only the lines of logs that match the regular expression specified through <expr>.
-f	--filename	<filename>	Sets the names of the files to be flushed to disk.
-l	--length	<length>	Sets the size of the files to be flushed to disk. The value must be greater than or equal to 64 KB.
-n	--number	<number>	Sets the number of files to be flushed to disk.
-j	--jobid	<jobid>	Sets the ID of a flushing task.
-w	--write	<control>	Controls a flushing task.
		query	Queries flushing tasks.
		start	Starts a flushing task. The command line parameters are the file name, size of a single file, flushing mode, and number of rotated files.
		stop	Stops a flushing task.
		refresh	Refreshes the logs in the buffer to the flushed file.
		clear	Deletes log files that are flushed to disks.
-m	--stream	<algorithm>	Sets the flushing mode.
		none	Indicates that data is flushed to disks in non-compression mode.
		zlib	Indicates that data is flushed to disks using the zlib compression algorithm. The flushed file is in .gz format.
		zstd	Indicates that data is flushed to disks using the zstd compression algorithm. The flushed file is in .zst format.
-v	--format	<format>	Sets the display format.
		time	Displays the local time.
		color	Adds colors to logs at different levels. By default, logs are displayed in black and white.
		epoch	Displays the amount of time elapsed since the epoch time.
		monotonic	Displays the amount of time elapsed since the system startup time.
		usec	Displays the time in microseconds.
		nsec	Displays the time in nanoseconds.
		year	Displays the time with the year portion.
		zone	Displays the time with the local time zone.
		wrap	Displays logs in different lines without adding prefixes such as the timestamp to the new line.
-b	--baselevel	<loglevel>	Sets the lowest level of logs that can be printed: D(DEBUG)/I(INFO)/W(WARN)/E(ERROR)/F(FATAL).
	--persist	-	Persists the log level setting command. (The setting will not be lost after the system is restarted.)

Examples

Displaying the Help Information

hilog -h

Example

 $ hilog -h
 Usage:
 -h --help
   Show all help information.
   Show single help information with option:
   query/clear/buffer/stats/persist/private/kmsg/flowcontrol/baselevel/domain/combo
 Querying logs options:
   No option performs a blocking read and keeps printing.
   -x --exit
     Performs a non-blocking read and exits when all logs in buffer are printed.
   -a <n>, --head=<n>
     Show n lines logs on head of buffer.
   -z <n>, --tail=<n>
     Show n lines logs on tail of buffer.

Non-Blocking Reading on Logs

hilog -x

Example

$ hilog -x
11-15 15:51:02.087  2823  2823 I A01B05/com.ohos.sceneboard/AOD: AodClockFullScreen --> timeTextLineHeight:313.3333333333333 clockMarginTop:99
11-15 15:51:02.087  2823  2823 I A01B05/com.ohos.sceneboard/AOD: AodClockFullScreen --> timeFontSize:114.48717948717947
11-15 15:51:02.090  2823  2823 I A01B05/com.ohos.sceneboard/AOD: AodClockFullScreen --> timeTextWidth:202,timeTextHeight:292
11-15 15:51:02.100  2823  2823 I A01B05/com.ohos.sceneboard/AOD: ComponentUtil --> Component(ComponentId-AodClockNumber) draw complete.
11-15 15:51:02.110  1197  1197 E C01406/render_service/OHOS::RS: [LoadImgsbyResolution] Can't find resolution (1084 x 2412) in config file
11-15 15:51:02.127  1197  1197 E C01406/render_service/OHOS::RS: [LoadImgsbyResolution] Can't find resolution (1084 x 2412) in config file

Displaying the Log Buffer Size

hilog -g

Example

$ hilog -g
Log type app buffer size is 16.0M
Log type init buffer size is 16.0M
Log type core buffer size is 16.0M
Log type only_prerelease buffer size is 16.0M

Setting the Log Buffer Size

hilog -G size

Example

$ hilog -G 16M
Set log type app buffer size to 16.0M successfully
Set log type init buffer size to 16.0M successfully
Set log type core buffer size to 16.0M successfully
Set log type only_prerelease buffer size to 16.0M successfully

Clearing the Log Buffer

hilog -r

Example

$ hilog -r
Log type core,app,only_prerelease buffer clear successfully

Enabling/Disabling Kernel Log Reading

hilog -k on/off

Example

$ hilog -k on
Set hilogd storing kmsg log on successfully
$ 
$ hilog -k off
Set hilogd storing kmsg log off successfully

Displaying Statistics

hilog -s

Example

$ param set persist.sys.hilog.stats true
Set parameter persist.sys.hilog.stats true success
$ reboot
$ hilog -s
Log statistic report (Duration: 0h0m32s.564, From: 11-15 16:04:08.628):
Total lines: 137517, length: 8.0M
DEBUG lines: 0(0%), length: 0.0B(0%)
INFO lines: 101795(74%), length: 6.1M(76%)
WARN lines: 10268(7.5%), length: 719.9K(8.8%)
ERROR lines: 25452(19%), length: 1.2M(15%)
FATAL lines: 2(0.0015%), length: 259.0B(0.0031%)
------------------------------------------------------------
Domain Table:
LOGTYPE- DOMAIN---- TAG----------------------------- MAX_FREQ-- TIME---------------- MAX_TP---- TIME---------------- LINES----- LENGTH---- DROPPED---
app----- 0xf00----- -------------------------------- 924.00---- 11-15 16:04:25.594-- 111975.00- 11-15 16:04:25.594-- 3386------ 371.5K---- 0---------
app----- 0x0------- -------------------------------- 285.00---- 11-15 16:04:34.877-- 44242.00-- 11-15 16:04:34.877-- 990------- 129.2K---- 0---------

Description

MAX_FREQ: the maximum number of log lines per second
TIME: occurrence time
MAX_TP: the maximum number of bytes per second
LINES: the total number of lines in a statistical period
LENGTH: the total number of bytes in a statistical period
DROPPED: the number of dropped lines in a statistical period

Clearing Statistics

hilog -S

Example

$ hilog -S
Statistic info clear successfully

Enabling/Disabling Process Flow Control

hilog -Q pidon/pidoff

Example

$ hilog -Q pidon
Set flow control by process to enabled successfully
$
$ hilog -Q pidoff
Set flow control by process to disabled successfully

Enabling/Disabling Domain Flow Control

hilog -Q domainon/domainoff

Example

$ hilog -Q domainon
Set flow control by domain to enabled successfully
$
$ hilog -Q domainoff
Set flow control by domain to disabled successfully

Displaying Logs of a Specified Level

hilog -L D/I/W/E/F

Example

$ hilog -L E
08-28 09:01:25.730  2678  2678 E A00F00/com.aidataservice/AiDataService_5.10.7.320: DataChangeNotifyManager: notifyDataChange CommonEntity no valid entity to notify
08-28 09:01:56.058  8560  8560 E A00500/com.ohos.settingsdata/SettingsData: DB not ready request = datashare:///com.ohos.settingsdata/entry/settingsdata/SETTINGSDATA?Proxy=true&key=analysis_service_switch_on , retry after DB startup
08-28 09:01:56.082  8560  8560 E A00500/com.ohos.settingsdata/SettingsData: decoder failure: /data/migrate/settings_global.xml , error code:-1
08-28 09:01:56.082  8560  8560 E A00500/com.ohos.settingsdata/SettingsData: clearXml failed:No such file or directory, error code:13900002
08-28 09:01:56.083  8560  8560 E A00500/com.ohos.settingsdata/SettingsData: readText failed:No such file or directory, error code:13900002
08-28 09:01:56.371  8586  8586 E A00500/com.ohos.settingsdata/SettingsData: DB not ready request =    datashare:///com.ohos.settingsdata/entry/settingsdata/SETTINGSDATA?Proxy=true&key=photo_network_connection_status , retry after DB startup
08-28 09:01:56.408  8586  8586 E A00500/com.ohos.settingsdata/SettingsData: decoder failure: /data/migrate/settings_global.xml , error code:-1

Displaying Logs of a Specified Type

hilog -t app

Example

$ hilog -t app
11-15 16:04:45.903  5630  5630 I A0A5A5/os.hiviewcare:staticSubscriber/Diagnosis: [DetectionFilter]820001084: switch off
11-15 16:04:45.905  5630  5630 I A0A5A5/os.hiviewcare:staticSubscriber/Diagnosis: [DetectionFilter]847005050: frequency limit
11-15 16:04:45.905  5630  5630 I A0A5A5/os.hiviewcare:staticSubscriber/Diagnosis: [SmartNotifyHandler]detections after filter: []
11-15 16:04:45.905  5630  5630 I A0A5A5/os.hiviewcare:staticSubscriber/Diagnosis: [SmartNotifyHandler]no detections to detect
11-15 16:04:45.924  5687  5687 I A01B06/common/KG: MetaBalls-SystemTopPanelController --> init charging status = 3

Displaying Logs of a Specified Domain

hilog -D 01B06

Example

$ hilog -D 01B06
11-15 16:04:54.981  5687  5687 I A01B06/common/KG: MetaBalls-MetaBallRenderer --> pressTime = 0 appearTime = 1731657885972
11-15 16:04:54.981  5687  5687 I A01B06/common/KG: MetaBalls-MetaBallRenderer --> backAnimator on finish
11-15 16:04:54.982  5687  5687 I A01B06/common/KG: MetaBalls-MetaBallRenderer --> setTimeout over 9s and begin animate on finish
11-15 16:04:55.297  5687  5687 I A01B06/common/KG: MetaBalls-MetaBallRenderer --> chargingTextExitAnimation onFinish
11-15 16:04:55.494  5687  5687 I A01B06/common/KG: MetaBalls-MetaBallRenderer --> uiExtension session send data success,type: exitAnimationFinish

Displaying Logs of a Specified Tag

hilog -T tag

Example

$ hilog -T SAMGR
08-28 09:27:59.581   610 11504 I C01800/samgr/SAMGR: CommonEventCollect save extraData 1661
08-28 09:27:59.581   610 11504 I C01800/samgr/SAMGR: OnReceiveEvent get action: usual.event.BATTERY_CHANGED code: 0, extraDataId 1661
08-28 09:27:59.582   610 11504 I C01800/samgr/SAMGR: DoEvent:4 name:usual.event.BATTERY_CHANGED value:0
08-28 09:27:59.582   610 11504 W C01800/samgr/SAMGR: LoadSa SA:10120 AddDeath fail,cnt:1,callpid:610
08-28 09:27:59.583   610 11504 I C01800/samgr/SAMGR: LoadSa SA:10120 size:1,count:1
08-28 09:27:59.601   610 11504 I C01800/samgr/SAMGR: Scheduler SA:10120 loading
08-28 09:27:59.965 11518 11518 I C01800/media_analysis_service/SAMGR: SA:10120 OpenSo spend 315ms
08-28 09:27:59.965   610  4064 I C01800/samgr/SAMGR: AddProc:media_analysis_service. size:75

Displaying Logs in the First N Lines of the Buffer

hilog -a 8

Example

$ hilog -a 8
11-15 16:04:08.628     0     0 I I00000/HiLog: ========Zeroth log of type: init
11-15 16:04:08.603   506   506 I I02C01/cust_carrier_mount/CustCarrierMount: MountCarrierToShared start
11-15 16:04:08.604   506   506 I I02C01/cust_carrier_mount/CustCarrierMount: success to mount carrier to shared
11-15 16:04:15.394   972   972 I I02C01/cust_carrier_mount/CustCarrierMount: UpdateCotaOpkeyLink start
11-15 16:04:15.396   972   972 W I02C01/cust_carrier_mount/CustCarrierMount: not exsit CUST_GLOBAL_CARRIER_DIR or COTA_PARAM_CARRIER_DIR
11-15 16:04:15.887   972   972 I I02C01/cust_carrier_mount/CustCarrierMount: success to update cota carrier
11-15 16:04:48.749  5777  5901 I A00001/com.hiai.core/HiAI_Metadata: metadata is null
11-15 16:04:48.749  5777  5901 I A00001/com.hiai.core/HiAI_PluginAbilityInfo: abilityInfo is null

Displaying Logs in the Last N Lines of the Buffer

hilog -z 8

Example

$ hilog -z 8
11-15 16:12:19.015  1899  7867 W C01719/wifi_manager_service/ffrt: 423:FFRTQosApplyForOther:244 tid 7867, Operation not permitted, ret:-1, eno:1
11-15 16:12:19.125  1043  1072 I C01C42/time_service/TimeService: uid: 1010 id:428551571 name:wifi_manager_service wk:0
11-15 16:12:19.125  1043  1072 I C01C42/time_service/TimeService: bat: -1 id:428551571 we:505225000000 mwe:512725000000
11-15 16:12:19.125  1043  1072 I C01C42/time_service/TimeService: typ:3 trig: 505 225000000, bt: 495230369193
11-15 16:12:19.125  1043  1072 I C01C42/time_service/TimeService: cb: 428551571 ret: 0
11-15 16:12:19.435  3086  7813 I C01719/com.ohos.contactsdataability/ffrt: 45:~WorkerThread:72 to exit, qos[3]
11-15 16:12:19.691   800  1404 I C01713/resource_schedule_service/SUSPEND_MANAGER: [(HasSpecialStateFromBgtask):759] 20020107_com.ohos.medialibrary.medialibrarydata
11-15 16:12:19.691   800  1404 I C01713/resource_schedule_service/SUSPEND_MANAGER: [(DozeFreezeUnit):890] Doze has special:ERR_HAS_PID_EFFICIENCY_RESOURCE

Displaying Logs of a Specified Process

hilog -P pid

Example

$ hilog -P 618
08-28 10:19:16.872   618 17729 I C02D15/hiview/XPower: [task_52]#current system load is: 0.028767
08-28 10:19:23.997   618 17580 I C02D10/hiview/CpuCollector: CalculateProcessCpuStatInfos: startTime=1724811553746, endTime=1724811563996, startBootTime=47001084, endBootTime=47011335, period=10251
08-28 10:19:23.999   618 17580 I C02D10/hiview/CpuCollector: CollectProcessCpuStatInfos: collect process cpu statistics information size=234, isNeedUpdate=1
08-28 10:19:24.002   618 17580 W C01650/hiview/Rdb:  DB :
08-28 10:19:24.002   618 17580 W C01650/hiview/Rdb:  device: 12583051 inode: 40230 mode: 432 size: 569344 natime: Wed Aug 28 00:00:06 2024
08-28 10:19:24.002   618 17580 W C01650/hiview/Rdb:  smtime: Wed Aug 28 00:34:30 2024
08-28 10:19:24.002   618 17580 W C01650/hiview/Rdb:  sctime: Wed Aug 28 00:34:30 2024

Displaying Logs That Match the Regular Expression Keyword

hilog -e start

Example

$ hilog -e start
11-15 16:17:17.578   547  4504 I C01800/samgr/SAMGR: AddProc start proc:media_analysis_service spend 223ms
11-15 16:17:17.578   547  4504 I C01800/samgr/SAMGR: Scheduler proc:media_analysis_service handle started event
11-15 16:17:17.578   547  4504 I C01800/samgr/SAMGR: Scheduler proc:media_analysis_service started
11-15 16:17:17.580  8877  8877 I C01810/media_analysis_service/SAFWK: start tasks proc:media_analysis_service end,spend 1ms
11-15 16:17:17.582  8877  8877 I C01651/media_analysis_service/DataShare: [operator()()-data_share_manager_impl.cpp:134]: RecoverObs start
11-15 16:17:17.589  8877  8893 I C01651/media_analysis_service/DataShare: [Connect()-ams_mgr_proxy.cpp:67]: connect start, uri = ******/media
11-15 16:17:18.225  1155  1633 I C02943/power_host/ThermalHdi: CreateLogFile start
11-15 16:17:18.264  1155  1633 I C02943/power_host/ThermalHdi: CompressFile start

Displaying and Setting Flushing Tasks

hilog -w control

NOTE

Run hilog -w query to query the current task.

Run hilog -w start -n 1000 to start the HiLog flushing task and set the number of flushed files to 1000.

Run hilog -w start -n 100 -t kmsg to start the kmsglog flushing task and set the number of flushed files to 100.

Run hilog -w stop to stop the flushing task.

Run hilog -w start -t kmsg -f kmsglog -l 2M -n 100 -m zlib to start the kmsglog flushing task and set the file name to kmsglog, size to 2 MB, number of files to 100, compression mode to zlib. The compression mode can be zlib, zstd or none.

Example

$ hilog -w query
Persist task query failed
No running persistent task [CODE: -63]
$
$ hilog -w start -n 1000
Persist task [jobid:1][fileNum:1000][fileSize:4194304] start successfully
$
$ hilog -w start -n 100 -t kmsg
Persist task [jobid:2][fileNum:100][fileSize:4194304] start successfully
$
$ hilog -w stop
Persist task [jobid:1] stop successfully
Persist task [jobid:2] stop successfully
$
$ hilog -w start -t kmsg -f kmsglog -l 2M -n 100 -m zlib
Persist task [jobid:2][fileNum:100][fileSize:2097152] start successfully

Setting the Log Display Format

hilog -v time/color/epoch/monotonic/usec/nsec/year/zone/wrap

Example

$ hilog -v time
11-15 16:36:21.027  1134  1723 I C02B01/riladapter_host/HrilExt: [NotifyToBoosterTel-(hril_manager_ext.cpp:440)] RilExt:Notify to booster tel finish
11-15 16:36:21.027  1134  1723 I C02B01/riladapter_host/HrilExt: [NotifyToBoosterNet-(hril_manager_ext.cpp:450)] RilExt: HNOTI_BOOSTER_NET_IND report to booster net
11-15 16:36:21.027  1134  1723 I C02B01/riladapter_host/HrilExt: [NotifyToBoosterNet-(hril_manager_ext.cpp:454)] RilExt: HNOTI_BOOSTER_NET_IND report to booster net finish
11-15 16:36:21.027  1134  1723 I P01FFF/riladapter_host/Rilvendor: CHAN [HandleUnsolicited] HandleUnsolicited done for modem:0, index:0, atResponse:^BOOSTERNTF: 3, 20,"0600100001000004000000000102A4FF0202F6FF"
11-15 16:36:21.802  2809  2831 E C02D06/com.ohos.sceneboard/XCollie: Send kick,foundation to hungtask Successful
11-15 16:36:21.911   882  3016 I C01F0B/telephony/TelephonyVSim: state machine ProcessEvent Id: 125
11-15 16:36:21.911   882  3016 I C01F0B/telephony/TelephonyVSim: StateProcess
$
$ hilog -v nsec
11-15 16:37:09.010658555  1134  1723 I C02B01/riladapter_host/HrilExt: [BoosterRawInd-(hril_booster.cpp:296)] RilExt: BoosterRawInd
11-15 16:37:09.010676263  1134  1723 I C02B01/riladapter_host/HrilExt: [BoosterRawInd-(hril_booster.cpp:328)] check need notify to satellite:indType 6
11-15 16:37:09.010800221  1134  1723 I C02B01/riladapter_host/HrilExt: [NotifyToBoosterTel-(hril_manager_ext.cpp:436)] RilExt: report to telephony ext, requestNum: 4201
11-15 16:37:09.011011680  1134  1723 I C02B01/riladapter_host/HrilExt: [NotifyToBoosterTel-(hril_manager_ext.cpp:440)] RilExt:Notify to booster tel finish
11-15 16:37:09.011064805  1134  1723 I C02B01/riladapter_host/HrilExt: [NotifyToBoosterNet-(hril_manager_ext.cpp:450)] RilExt: HNOTI_BOOSTER_NET_IND report to booster net
11-15 16:37:09.011200742  1134  1723 I C02B01/riladapter_host/HrilExt: [NotifyToBoosterNet-(hril_manager_ext.cpp:454)] RilExt: HNOTI_BOOSTER_NET_IND report to booster net finish

Displaying and Setting Log Levels

// The default global log level is Info.
param get param get hilog.loggable.global

// Set the global log level.
hilog -b D/I/W/E/F

// Set the log level of [DOMAINID].
hilog -b D/I/W/E/F -D [DOMAINID]

// Set the log level of [TAG].
hilog -b D/I/W/E/F -T [TAG]

// Set the global log level. The setting still takes effect after the device is restarted.
hilog -b D/I/W/E/F --persist

Example

$ param get hilog.loggable.global
I

$ hilog -b E
Set global log level to E successfully

$ hilog -b D -D 0x2d00
Set domain 0x2d00 log level to D successfully

$ hilog -b E -T testTag
Set tag testTag log level to E successfully

Enabling/Disabling the Privacy Format

hilog -p on/off

Example

# hilog -p on
Set hilog privacy format on successfully
#
# hilog -p off
Set hilog privacy format off successfully

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HiLog

Environment Setup

Commands

Examples

Displaying the Help Information

Non-Blocking Reading on Logs

Displaying the Log Buffer Size

Setting the Log Buffer Size

Clearing the Log Buffer

Enabling/Disabling Kernel Log Reading

Displaying Statistics

Clearing Statistics

Enabling/Disabling Process Flow Control

Enabling/Disabling Domain Flow Control

Displaying Logs of a Specified Level

Displaying Logs of a Specified Type

Displaying Logs of a Specified Domain

Displaying Logs of a Specified Tag

Displaying Logs in the First N Lines of the Buffer

Displaying Logs in the Last N Lines of the Buffer

Displaying Logs of a Specified Process

Displaying Logs That Match the Regular Expression Keyword

Displaying and Setting Flushing Tasks

Setting the Log Display Format

Displaying and Setting Log Levels

Enabling/Disabling the Privacy Format

你可能感兴趣的鸿蒙文章

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最热博客

标签云

HiLog

Environment Setup

Commands

Examples

Displaying the Help Information

Non-Blocking Reading on Logs

Displaying the Log Buffer Size

Setting the Log Buffer Size

Clearing the Log Buffer

Enabling/Disabling Kernel Log Reading

Displaying Statistics

Clearing Statistics

Enabling/Disabling Process Flow Control

Enabling/Disabling Domain Flow Control

Displaying Logs of a Specified Level

Displaying Logs of a Specified Type

Displaying Logs of a Specified Domain

Displaying Logs of a Specified Tag

Displaying Logs in the First N Lines of the Buffer

Displaying Logs in the Last N Lines of the Buffer

Displaying Logs of a Specified Process

Displaying Logs That Match the Regular Expression Keyword

Displaying and Setting Flushing Tasks

Setting the Log Display Format

Displaying and Setting Log Levels

Enabling/Disabling the Privacy Format

你可能感兴趣的鸿蒙文章

最新博客

最热博客