无需启动程序即可自动更新Web应用程序即服务 [英] Auto update for web app as a service with no launcher
本文介绍了无需启动程序即可自动更新Web应用程序即服务的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
如果该应用程序是不带启动器的Web应用程序即服务，则install4j中的自动更新功能是否起作用?我尝试了Web资源中提到的许多方法，但是没有运气.请帮忙.我正在使用install4j Windows Edition 6.1.6.
@Ingo Kegel，
根据您的建议，我添加了-Dinstall4j.keepLog=true -Dinstall4j.alternativeLogfile=E:/install4j-log/log.txt并获得了以下日志.请帮忙.
[INFO] com.install4j.runtime.beans.actions.control.SetVariableAction [ID 630]: Execute action
Property script: com.install4j.script.I4jScript_Internal_38
Property variableName: updateDescriptorEntry
Property failIfNull: true
Property onlyIfUndefined: false
Property responseFileVariable: false
Property rollbackSupported: false
[ERROR] com.install4j.runtime.beans.actions.control.SetVariableAction [ID 630]: Execute action not successful after 4 ms
下面是执行代码后的日志(下载exe文件后)
UpdateChecker.executeScheduledUpdate(Arrays.asList("-q"), false, null);
日志:
[INFO] com.install4j.runtime.beans.actions.update.CheckForUpdateAction [ID 629]: Execute action
Property connectTimeout: 10000
Property connectionFailureScript: null
Property readTimeout: 20000
Property requestHeaders: []
Property url: http://localhost:8181/astra-downloads/updates.xml
Property variable: updateDescriptor
Property acceptAllCertificates: false
Property askForProxy: true
Property rollbackSupported: false
Property showError: true
Download: http://localhost:8181/astra-downloads/updates.xml to C:\WINDOWS\TEMP\i4jupd4650856858406689282.xml; size: 366 bytes
Variable changed: updateDescriptor=com.install4j.runtime.installer.config.update.UpdateDescriptorImpl@82c94f[class com.install4j.runtime.installer.config.update.UpdateDescriptorImpl]
Execute action successful after 44 ms
[INFO] com.install4j.runtime.beans.actions.control.SetVariableAction [ID 630]: Execute action
Property script: com.install4j.script.I4jScript_Internal_63
Property variableName: updateDescriptorEntry
Property failIfNull: true
Property onlyIfUndefined: false
Property responseFileVariable: false
Property rollbackSupported: false
Branch 1
3.0.1
Variable changed: updateDescriptorEntry=UpdateDescriptorEntry [target: 22, file: GreytipAstra_windows_3_0_1.exe][class com.install4j.runtime.installer.config.update.UpdateDescriptorEntryImpl]
Execute action successful after 4 ms
[INFO] com.install4j.runtime.beans.actions.control.SetVariableAction [ID 632]: Execute action
Property script: com.install4j.script.I4jScript_Internal_65
Property variableName: updaterNewVersion
Property failIfNull: false
Property onlyIfUndefined: false
Property responseFileVariable: false
Property rollbackSupported: false
Variable changed: updaterNewVersion=3.0.1[class java.lang.String]
Execute action successful after 0 ms
[INFO] com.install4j.runtime.beans.actions.control.SetVariableAction [ID 633]: Execute action
Property script: com.install4j.script.I4jScript_Internal_66
Property variableName: updaterDownloadUrl
Property failIfNull: false
Property onlyIfUndefined: false
Property responseFileVariable: false
Property rollbackSupported: false
Variable changed: updaterDownloadUrl=http://localhost:8181/astra-downloads/GreytipAstra_windows_3_0_1.exe[class java.lang.String]
Execute action successful after 0 ms
[INFO] com.install4j.runtime.beans.actions.control.SetVariableAction [ID 634]: Execute action
Property script: com.install4j.script.I4jScript_Internal_67
Property variableName: updaterDownloadFile
Property failIfNull: false
Property onlyIfUndefined: false
Property responseFileVariable: false
Property rollbackSupported: false
Variable changed: updaterDownloadFile=C:/Users/Abhishek/Downloads\GreytipAstra_windows_3_0_1.exe[class java.lang.String]
Execute action successful after 0 ms
[INFO] com.install4j.runtime.beans.actions.net.DownloadFileAction [ID 635]: Execute action
Property connectTimeout: 10000
Property connectionFailureScript: null
Property md5Url:
Property readTimeout: 20000
Property requestHeaders: []
Property targetFile: C:\Users\Abhishek\Downloads\GreytipAstra_windows_3_0_1.exe
Property url: http://localhost:8181/astra-downloads/GreytipAstra_windows_3_0_1.exe
Property acceptAllCertificates: false
Property askForProxy: true
Property checkForMd5Sums: false
Property deleteOnExit: false
Property dontAskForRetry: false
Property retryIfInterrupted: true
Property rollbackSupported: false
Property showError: true
Property showFileName: true
Property showProgress: true
Download: http://localhost:8181/astra-downloads/GreytipAstra_windows_3_0_1.exe to C:\Users\Abhishek\Downloads\GreytipAstra_windows_3_0_1.exe; size: 43569152 bytes
Execute action successful after 2640 ms
[INFO] com.install4j.runtime.beans.actions.files.SetModeAction [ID 637]: Execute action
Property directoryFilter: null
Property fileFilter: null
Property fileTarget: everything
Property files: [C:\Users\Abhishek\Downloads\GreytipAstra_windows_3_0_1.exe]
Property filesRoot: null
Property mode: 755
Property recursive: false
Property rollbackSupported: true
Property showFileNames: true
Property showProgress: false
Execute action successful after 0 ms
[INFO] com.install4j.runtime.beans.actions.update.ScheduleUpdateAction [ID 638]: Execute action
Property arguments: []
Property installerFile: C:\Users\Abhishek\Downloads\GreytipAstra_windows_3_0_1.exe
Property maxCancelCount: 10
Property maxTries: 3
Property version: 3.0.1
Property rollbackSupported: false
Execute action successful after 3 ms
[INFO] com.install4j.runtime.beans.screens.StartupScreen [ID 627]: command: move 1 screens, executing actions, checking condition
[INFO] cleaning up
[INFO] Finished
以下是UpdateChecker.executeScheduledUpdate(Arrays.asList("-q","-Dinstall4j.keepLog=true","-Dinstall4j.alternativeLogfile=E:/install4j-log/log2.txt"), false, null);
[INFO] logger started at Fri Sep 15 15:27:01 IST 2017
[INFO] executable name: C:\Users\Abhishek\Downloads\GreytipAstra_windows_3_0_1.exe
[INFO] install4j version: 6.1.6 (build 6459)
[INFO] Properties:
-- listing properties --
java.runtime.name=Java(TM) SE Runtime Environment
exe4j.moduleName=C:\Users\Abhishek\Downloads\GreytipAs...
sun.boot.library.path=c:\windows\temp\e4j101b.tmp_dir150546...
exe4j.semaphoreName=Local\c:_users_abhishek_downloads_gre...
java.vm.version=24.80-b11
java.vm.vendor=Oracle Corporation
java.vendor.url=http://java.oracle.com/
path.separator=;
exe4j.consoleCodepage=cp0
java.vm.name=Java HotSpot(TM) Client VM
file.encoding.pkg=sun.io
user.script=
user.country=US
sun.os.patch.level=
install4j.exeDir=C:\Users\Abhishek\Downloads\
java.vm.specification.name=Java Virtual Machine Specification
user.dir=C:\WINDOWS\TEMP\e4j101B.tmp_dir150546...
java.runtime.version=1.7.0_80-b15
java.awt.graphicsenv=sun.awt.Win32GraphicsEnvironment
java.endorsed.dirs=c:\windows\temp\e4j101b.tmp_dir150546...
os.arch=x86
java.io.tmpdir=C:\WINDOWS\TEMP\
line.separator=
java.vm.specification.vendor=Oracle Corporation
user.variant=
exe4j.tempDir=C:\WINDOWS\TEMP\e4j101B.tmp_dir150546...
os.name=Windows NT (unknown)
sun.java2d.noddraw=true
sun.jnu.encoding=Cp1252
java.library.path=C:\WINDOWS\TEMP\e4j101B.tmp_dir150546...
sun.awt.enableExtraMouseButtons=true
java.specification.name=Java Platform API Specification
java.class.version=51.0
sun.management.compiler=HotSpot Client Compiler
install4j.language=en
exe4j.isInstall4j=true
os.version=10.0
install4j.updateStorageDir=C:\WINDOWS\system32\config\systemprof...
user.home=C:\Windows\System32\config\systemprofile
user.timezone=Asia/Calcutta
java.awt.printerjob=sun.awt.windows.WPrinterJob
java.specification.version=1.7
file.encoding=Cp1252
user.name=ABHISHEK-PC$
java.class.path=C:\WINDOWS\TEMP\e4j101B.tmp_dir150546...
java.vm.specification.version=1.7
sun.arch.data.model=32
java.home=c:\windows\temp\e4j101b.tmp_dir150546...
sun.java.command=C:\Users\Abhishek\Downloads\GreytipAs...
exe4j.launchName=C:\Users\Abhishek\DOWNLO~1\GREYTI~1.EXE
java.specification.vendor=Oracle Corporation
user.language=en
awt.toolkit=sun.awt.windows.WToolkit
java.vm.info=mixed mode
exe4j.unextractedPosition=26515602
java.version=1.7.0_80
java.ext.dirs=c:\windows\temp\e4j101b.tmp_dir150546...
sun.boot.class.path=c:\windows\temp\e4j101b.tmp_dir150546...
java.vendor=Oracle Corporation
install4j.appDir=C:\Windows\Temp\
file.separator=\
java.vendor.url.bug=http://bugreport.sun.com/bugreport/
sun.cpu.endian=little
sun.io.unicode.encoding=UnicodeLittle
install4j.alternativeLogfile=E:/install4j-log/log2.txt
install4j.lockFile=C:\WINDOWS\system32\config\systemprof...
install4j.keepLog=true
sun.desktop=windows
sun.cpu.isalist=pentium_pro+mmx pentium_pro pentium+m...
[INFO] com.install4j.runtime.beans.actions.misc.RequestPrivilegesAction [ID 304]: Execute action
Property allRequested: false
Property failIfNotRootUnix: true
Property obtainIfAdminMac: false
Property obtainIfNormalWin: false
Property obtainIfNormalMac: false
Property obtainIfAdminWin: true
Property failIfNotObtainedWin: true
Property failIfNotObtainedMac: true
Property rollbackSupported: false
Execute action successful after 1 ms
[INFO] com.install4j.runtime.beans.screens.StartupScreen [ID 1]: command: move 1 screens, executing actions, checking condition
[INFO] com.install4j.runtime.beans.screens.WelcomeScreen [ID 2]: Show screen
[INFO] checking writable with maximum
[INFO] com.install4j.runtime.beans.screens.WelcomeScreen [ID 2]: thread name AWT-EventQueue-0
我在应用程序中的代码:
try {
ApplicationLauncher.launchApplication("626", null, false, new ApplicationLauncher.Callback() {
public void exited(int exitValue) {
//TODO add your code here (not invoked on event dispatch thread)
log.debug("******Exited "+exitValue+"********");
log.debug("****Inside block UpdateChecker.isUpdateScheduled() "+String.valueOf(UpdateChecker.isUpdateScheduled()));
boolean updateScheduled=UpdateChecker.isUpdateScheduled();
if(updateScheduled){
log.debug("***************Running UpdateChecker.executeScheduledUpdate*******************");
UpdateChecker.executeScheduledUpdate(Arrays.asList("-q","-Dinstall4j.keepLog=true","-Dinstall4j.alternativeLogfile=E:/install4j-log/log2.txt"), false, null);
log.debug("***************Completed UpdateChecker.executeScheduledUpdate*******************");
}
}
public void prepareShutdown() {
//TODO add your code here (not invoked on event dispatch thread)
log.debug("******prepare shut down********");
}
}
);
} catch (IOException e) {
e.printStackTrace();
//TODO handle invocation failure
}
jstack错误如下:
修改5: 以下是jstack日志:
2017-09-18 17:31:12
Full thread dump Java HotSpot(TM) Client VM (24.80-b11 mixed mode):
"TimerQueue" daemon prio=6 tid=0x17ecec00 nid=0x3708 waiting on condition [0x1861f000]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x03850980> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
at java.util.concurrent.locks.LockSupport.park(Unknown Source)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(Unknown Source)
at java.util.concurrent.DelayQueue.take(Unknown Source)
at javax.swing.TimerQueue.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Locked ownable synchronizers:
- <0x03884b18> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)
"AWT-EventQueue-0" prio=6 tid=0x17d3f000 nid=0x2670 waiting on condition [0x1841e000]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x08ca4218> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
at java.util.concurrent.locks.LockSupport.park(Unknown Source)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(Unknown Source)
at java.awt.EventQueue.getNextEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Locked ownable synchronizers:
- None
"AWT-Windows" daemon prio=6 tid=0x17d2fc00 nid=0x40c runnable [0x1838f000]
java.lang.Thread.State: RUNNABLE
at sun.awt.windows.WToolkit.eventLoop(Native Method)
at sun.awt.windows.WToolkit.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Locked ownable synchronizers:
- None
"AWT-Shutdown" prio=6 tid=0x17d2f400 nid=0xe68 in Object.wait() [0x182ff000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x08c79758> (a java.lang.Object)
at java.lang.Object.wait(Object.java:503)
at sun.awt.AWTAutoShutdown.run(Unknown Source)
- locked <0x08c79758> (a java.lang.Object)
at java.lang.Thread.run(Unknown Source)
Locked ownable synchronizers:
- None
"Java2D Disposer" daemon prio=10 tid=0x17d2ec00 nid=0x3d64 in Object.wait() [0x1826f000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x08c797e8> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(Unknown Source)
- locked <0x08c797e8> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(Unknown Source)
at sun.java2d.Disposer.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Locked ownable synchronizers:
- None
"Service Thread" daemon prio=6 tid=0x1783bc00 nid=0x468 runnable [0x00000000]
java.lang.Thread.State: RUNNABLE
Locked ownable synchronizers:
- None
"C1 CompilerThread0" daemon prio=10 tid=0x1783a000 nid=0x1768 waiting on condition [0x00000000]
java.lang.Thread.State: RUNNABLE
Locked ownable synchronizers:
- None
"Attach Listener" daemon prio=10 tid=0x17837800 nid=0x389c waiting on condition [0x00000000]
java.lang.Thread.State: RUNNABLE
Locked ownable synchronizers:
- None
"Signal Dispatcher" daemon prio=10 tid=0x17835400 nid=0x3258 runnable [0x00000000]
java.lang.Thread.State: RUNNABLE
Locked ownable synchronizers:
- None
"Finalizer" daemon prio=8 tid=0x0101a800 nid=0x4394 in Object.wait() [0x033bf000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x08ab74f8> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(Unknown Source)
- locked <0x08ab74f8> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(Unknown Source)
at java.lang.ref.Finalizer$FinalizerThread.run(Unknown Source)
Locked ownable synchronizers:
- None
"Reference Handler" daemon prio=10 tid=0x01015800 nid=0x3d50 in Object.wait() [0x0127f000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x08ab7588> (a java.lang.ref.Reference$Lock)
at java.lang.Object.wait(Object.java:503)
at java.lang.ref.Reference$ReferenceHandler.run(Unknown Source)
- locked <0x08ab7588> (a java.lang.ref.Reference$Lock)
Locked ownable synchronizers:
- None
"main" prio=6 tid=0x010ac400 nid=0x3138 in Object.wait() [0x00798000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x038517d0> (a com.install4j.runtime.installer.controller.CommandSink)
at java.lang.Object.wait(Object.java:503)
at com.install4j.runtime.installer.controller.Controller.start(Controller.java:87)
- locked <0x038517d0> (a com.install4j.runtime.installer.controller.CommandSink)
at com.install4j.runtime.installer.Installer.runInProcess(Installer.java:59)
at com.install4j.runtime.installer.Installer.main(Installer.java:46)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.exe4j.runtime.LauncherEngine.launch(LauncherEngine.java:65)
at com.exe4j.runtime.WinLauncher.main(WinLauncher.java:101)
at com.install4j.runtime.launcher.WinLauncher.main(WinLauncher.java:26)
Locked ownable synchronizers:
- None
"VM Thread" prio=10 tid=0x01012400 nid=0x1bf0 runnable
"VM Periodic Task Thread" prio=10 tid=0x17856000 nid=0x2fdc waiting on condition
JNI global references: 449
以下是UpdateChecker.executeScheduledUpdate(Arrays.asList("-q","-Dinstall4j.keepLog=true","-Dinstall4j.alternativeLogfile=E:/install4j-log/log2.txt"), false, null);的日志:
[INFO] logger started at Tue Sep 19 11:20:00 IST 2017
[INFO] executable name: C:\Users\Abhishek\Downloads\GreytipAstra_windows_3_0_1.exe
[INFO] install4j version: 7.0.1 (build 7043)
[INFO] Properties:
-- listing properties --
java.runtime.name=Java(TM) SE Runtime Environment
exe4j.moduleName=C:\Users\Abhishek\Downloads\GreytipAs...
sun.boot.library.path=c:\windows\temp\e4j554d.tmp_dir150580...
exe4j.semaphoreName=Local\c:_users_abhishek_downloads_gre...
java.vm.version=24.80-b11
java.vm.vendor=Oracle Corporation
java.vendor.url=http://java.oracle.com/
path.separator=;
exe4j.consoleCodepage=cp0
java.vm.name=Java HotSpot(TM) Client VM
file.encoding.pkg=sun.io
user.script=
user.country=US
sun.os.patch.level=
install4j.exeDir=C:\Users\Abhishek\Downloads\
java.vm.specification.name=Java Virtual Machine Specification
user.dir=C:\WINDOWS\TEMP\e4j554D.tmp_dir150580...
java.runtime.version=1.7.0_80-b15
java.awt.graphicsenv=sun.awt.Win32GraphicsEnvironment
java.endorsed.dirs=c:\windows\temp\e4j554d.tmp_dir150580...
os.arch=x86
java.io.tmpdir=C:\WINDOWS\TEMP\
line.separator=
java.vm.specification.vendor=Oracle Corporation
user.variant=
exe4j.tempDir=C:\WINDOWS\TEMP\e4j554D.tmp_dir150580...
os.name=Windows NT (unknown)
sun.java2d.noddraw=true
sun.jnu.encoding=Cp1252
java.library.path=C:\WINDOWS\TEMP\e4j554D.tmp_dir150580...
sun.awt.enableExtraMouseButtons=true
java.specification.name=Java Platform API Specification
java.class.version=51.0
sun.management.compiler=HotSpot Client Compiler
install4j.language=en
exe4j.isInstall4j=true
os.version=10.0
install4j.updateStorageDir=C:\WINDOWS\system32\config\systemprof...
user.home=C:\Windows\System32\config\systemprofile
user.timezone=Asia/Calcutta
java.awt.printerjob=sun.awt.windows.WPrinterJob
java.specification.version=1.7
file.encoding=Cp1252
user.name=ABHISHEK-PC$
java.class.path=C:\WINDOWS\TEMP\e4j554D.tmp_dir150580...
java.vm.specification.version=1.7
sun.arch.data.model=32
java.home=c:\windows\temp\e4j554d.tmp_dir150580...
sun.java.command=C:\Users\Abhishek\Downloads\GreytipAs...
exe4j.launchName=C:\Users\Abhishek\DOWNLO~1\GREYTI~1.EXE
java.specification.vendor=Oracle Corporation
user.language=en
awt.toolkit=sun.awt.windows.WToolkit
java.vm.info=mixed mode
exe4j.unextractedPosition=25300990
java.version=1.7.0_80
java.ext.dirs=c:\windows\temp\e4j554d.tmp_dir150580...
sun.boot.class.path=c:\windows\temp\e4j554d.tmp_dir150580...
java.vendor=Oracle Corporation
install4j.appDir=C:\Windows\Temp\
file.separator=\
java.vendor.url.bug=http://bugreport.sun.com/bugreport/
sun.cpu.endian=little
sun.io.unicode.encoding=UnicodeLittle
install4j.alternativeLogfile=E:/install4j-log/log2.txt
install4j.lockFile=C:\WINDOWS\system32\config\systemprof...
install4j.keepLog=true
sun.desktop=windows
sun.cpu.isalist=pentium_pro+mmx pentium_pro pentium+m...
[INFO] com.install4j.runtime.beans.actions.misc.RequestPrivilegesAction [ID 304]: Execute action
Property allRequested: false
Property failIfNotObtainedMac: true
Property failIfNotObtainedWin: true
Property failIfNotRootUnix: true
Property obtainIfAdminMac: false
Property obtainIfAdminWin: true
Property obtainIfNormalMac: false
Property obtainIfNormalWin: false
Property rollbackSupported: false
Property updateInstallationDirectory: true
Execute action successful after 1 ms
[INFO] com.install4j.runtime.beans.screens.StartupScreen [ID 1]: command: move 1 screens, executing actions, checking condition
[INFO] com.install4j.runtime.beans.screens.WelcomeScreen [ID 2]: Show screen
[INFO] checking writable with maximum
解决方案
我建议将其更新为install4j 7，它具有许多新的自动更新功能，非常适合服务.
对于install4j 7，您可以在Installer-> Screen&中添加"Background update downloader"应用程序.动作步骤.该应用程序模板中的关键操作是计划更新安装"操作.
在您的服务中，您可以这样启动更新下载器:
ApplicationLauncher.launchApplication("<ID>", null, true, null);
在其自己的线程中，其中<ID>被替换为应用程序的ID.该调用将被阻止，并且当它返回时，可能已下载了更新安装程序.您可以使用
UpdateChecker.isUpdateScheduled()
现在，您只需要触发下载的安装程序的执行即可.您既可以立即执行此操作，也可以在启动时执行此操作(如果您不想终止该服务).您需要的代码段是这样的:
UpdateChecker.executeScheduledUpdate(Arrays.asList("-q"), false, null);
作为更新安装的一部分，服务将关闭.服务无法自动重新启动(如果您将true作为上述方法调用的第二个参数传递给了GUI启动程序，则该服务可以启动)，而必须通过安装程序中可能已经包含的启动服务"操作来启动. /p>
有关更多信息和屏幕截图，请参见
https://www.ej-technologies.com/products/install4j /whatsnew7.html
并搜索背景自动更新".
Does auto update functionality in install4j work if the the app is a web app as a service which has no launcher? I have tried many ways mentioned in web resources but no luck. Please help. I am using install4j Windows Edition 6.1.6.
Edit 1:
@Ingo Kegel,
I added -Dinstall4j.keepLog=true -Dinstall4j.alternativeLogfile=E:/install4j-log/log.txt as per your suggestion and got the below log. Please help.
[INFO] com.install4j.runtime.beans.actions.control.SetVariableAction [ID 630]: Execute action
Property script: com.install4j.script.I4jScript_Internal_38
Property variableName: updateDescriptorEntry
Property failIfNull: true
Property onlyIfUndefined: false
Property responseFileVariable: false
Property rollbackSupported: false
[ERROR] com.install4j.runtime.beans.actions.control.SetVariableAction [ID 630]: Execute action not successful after 4 ms
EDIT 2:
Below are the logs after executing code (After the exe file has been downloaded)
UpdateChecker.executeScheduledUpdate(Arrays.asList("-q"), false, null);
Logs:
[INFO] com.install4j.runtime.beans.actions.update.CheckForUpdateAction [ID 629]: Execute action
Property connectTimeout: 10000
Property connectionFailureScript: null
Property readTimeout: 20000
Property requestHeaders: []
Property url: http://localhost:8181/astra-downloads/updates.xml
Property variable: updateDescriptor
Property acceptAllCertificates: false
Property askForProxy: true
Property rollbackSupported: false
Property showError: true
Download: http://localhost:8181/astra-downloads/updates.xml to C:\WINDOWS\TEMP\i4jupd4650856858406689282.xml; size: 366 bytes
Variable changed: updateDescriptor=com.install4j.runtime.installer.config.update.UpdateDescriptorImpl@82c94f[class com.install4j.runtime.installer.config.update.UpdateDescriptorImpl]
Execute action successful after 44 ms
[INFO] com.install4j.runtime.beans.actions.control.SetVariableAction [ID 630]: Execute action
Property script: com.install4j.script.I4jScript_Internal_63
Property variableName: updateDescriptorEntry
Property failIfNull: true
Property onlyIfUndefined: false
Property responseFileVariable: false
Property rollbackSupported: false
Branch 1
3.0.1
Variable changed: updateDescriptorEntry=UpdateDescriptorEntry [target: 22, file: GreytipAstra_windows_3_0_1.exe][class com.install4j.runtime.installer.config.update.UpdateDescriptorEntryImpl]
Execute action successful after 4 ms
[INFO] com.install4j.runtime.beans.actions.control.SetVariableAction [ID 632]: Execute action
Property script: com.install4j.script.I4jScript_Internal_65
Property variableName: updaterNewVersion
Property failIfNull: false
Property onlyIfUndefined: false
Property responseFileVariable: false
Property rollbackSupported: false
Variable changed: updaterNewVersion=3.0.1[class java.lang.String]
Execute action successful after 0 ms
[INFO] com.install4j.runtime.beans.actions.control.SetVariableAction [ID 633]: Execute action
Property script: com.install4j.script.I4jScript_Internal_66
Property variableName: updaterDownloadUrl
Property failIfNull: false
Property onlyIfUndefined: false
Property responseFileVariable: false
Property rollbackSupported: false
Variable changed: updaterDownloadUrl=http://localhost:8181/astra-downloads/GreytipAstra_windows_3_0_1.exe[class java.lang.String]
Execute action successful after 0 ms
[INFO] com.install4j.runtime.beans.actions.control.SetVariableAction [ID 634]: Execute action
Property script: com.install4j.script.I4jScript_Internal_67
Property variableName: updaterDownloadFile
Property failIfNull: false
Property onlyIfUndefined: false
Property responseFileVariable: false
Property rollbackSupported: false
Variable changed: updaterDownloadFile=C:/Users/Abhishek/Downloads\GreytipAstra_windows_3_0_1.exe[class java.lang.String]
Execute action successful after 0 ms
[INFO] com.install4j.runtime.beans.actions.net.DownloadFileAction [ID 635]: Execute action
Property connectTimeout: 10000
Property connectionFailureScript: null
Property md5Url:
Property readTimeout: 20000
Property requestHeaders: []
Property targetFile: C:\Users\Abhishek\Downloads\GreytipAstra_windows_3_0_1.exe
Property url: http://localhost:8181/astra-downloads/GreytipAstra_windows_3_0_1.exe
Property acceptAllCertificates: false
Property askForProxy: true
Property checkForMd5Sums: false
Property deleteOnExit: false
Property dontAskForRetry: false
Property retryIfInterrupted: true
Property rollbackSupported: false
Property showError: true
Property showFileName: true
Property showProgress: true
Download: http://localhost:8181/astra-downloads/GreytipAstra_windows_3_0_1.exe to C:\Users\Abhishek\Downloads\GreytipAstra_windows_3_0_1.exe; size: 43569152 bytes
Execute action successful after 2640 ms
[INFO] com.install4j.runtime.beans.actions.files.SetModeAction [ID 637]: Execute action
Property directoryFilter: null
Property fileFilter: null
Property fileTarget: everything
Property files: [C:\Users\Abhishek\Downloads\GreytipAstra_windows_3_0_1.exe]
Property filesRoot: null
Property mode: 755
Property recursive: false
Property rollbackSupported: true
Property showFileNames: true
Property showProgress: false
Execute action successful after 0 ms
[INFO] com.install4j.runtime.beans.actions.update.ScheduleUpdateAction [ID 638]: Execute action
Property arguments: []
Property installerFile: C:\Users\Abhishek\Downloads\GreytipAstra_windows_3_0_1.exe
Property maxCancelCount: 10
Property maxTries: 3
Property version: 3.0.1
Property rollbackSupported: false
Execute action successful after 3 ms
[INFO] com.install4j.runtime.beans.screens.StartupScreen [ID 627]: command: move 1 screens, executing actions, checking condition
[INFO] cleaning up
[INFO] Finished
EDIT 3:
Below is the logs of UpdateChecker.executeScheduledUpdate(Arrays.asList("-q","-Dinstall4j.keepLog=true","-Dinstall4j.alternativeLogfile=E:/install4j-log/log2.txt"), false, null);
[INFO] logger started at Fri Sep 15 15:27:01 IST 2017
[INFO] executable name: C:\Users\Abhishek\Downloads\GreytipAstra_windows_3_0_1.exe
[INFO] install4j version: 6.1.6 (build 6459)
[INFO] Properties:
-- listing properties --
java.runtime.name=Java(TM) SE Runtime Environment
exe4j.moduleName=C:\Users\Abhishek\Downloads\GreytipAs...
sun.boot.library.path=c:\windows\temp\e4j101b.tmp_dir150546...
exe4j.semaphoreName=Local\c:_users_abhishek_downloads_gre...
java.vm.version=24.80-b11
java.vm.vendor=Oracle Corporation
java.vendor.url=http://java.oracle.com/
path.separator=;
exe4j.consoleCodepage=cp0
java.vm.name=Java HotSpot(TM) Client VM
file.encoding.pkg=sun.io
user.script=
user.country=US
sun.os.patch.level=
install4j.exeDir=C:\Users\Abhishek\Downloads\
java.vm.specification.name=Java Virtual Machine Specification
user.dir=C:\WINDOWS\TEMP\e4j101B.tmp_dir150546...
java.runtime.version=1.7.0_80-b15
java.awt.graphicsenv=sun.awt.Win32GraphicsEnvironment
java.endorsed.dirs=c:\windows\temp\e4j101b.tmp_dir150546...
os.arch=x86
java.io.tmpdir=C:\WINDOWS\TEMP\
line.separator=
java.vm.specification.vendor=Oracle Corporation
user.variant=
exe4j.tempDir=C:\WINDOWS\TEMP\e4j101B.tmp_dir150546...
os.name=Windows NT (unknown)
sun.java2d.noddraw=true
sun.jnu.encoding=Cp1252
java.library.path=C:\WINDOWS\TEMP\e4j101B.tmp_dir150546...
sun.awt.enableExtraMouseButtons=true
java.specification.name=Java Platform API Specification
java.class.version=51.0
sun.management.compiler=HotSpot Client Compiler
install4j.language=en
exe4j.isInstall4j=true
os.version=10.0
install4j.updateStorageDir=C:\WINDOWS\system32\config\systemprof...
user.home=C:\Windows\System32\config\systemprofile
user.timezone=Asia/Calcutta
java.awt.printerjob=sun.awt.windows.WPrinterJob
java.specification.version=1.7
file.encoding=Cp1252
user.name=ABHISHEK-PC$
java.class.path=C:\WINDOWS\TEMP\e4j101B.tmp_dir150546...
java.vm.specification.version=1.7
sun.arch.data.model=32
java.home=c:\windows\temp\e4j101b.tmp_dir150546...
sun.java.command=C:\Users\Abhishek\Downloads\GreytipAs...
exe4j.launchName=C:\Users\Abhishek\DOWNLO~1\GREYTI~1.EXE
java.specification.vendor=Oracle Corporation
user.language=en
awt.toolkit=sun.awt.windows.WToolkit
java.vm.info=mixed mode
exe4j.unextractedPosition=26515602
java.version=1.7.0_80
java.ext.dirs=c:\windows\temp\e4j101b.tmp_dir150546...
sun.boot.class.path=c:\windows\temp\e4j101b.tmp_dir150546...
java.vendor=Oracle Corporation
install4j.appDir=C:\Windows\Temp\
file.separator=\
java.vendor.url.bug=http://bugreport.sun.com/bugreport/
sun.cpu.endian=little
sun.io.unicode.encoding=UnicodeLittle
install4j.alternativeLogfile=E:/install4j-log/log2.txt
install4j.lockFile=C:\WINDOWS\system32\config\systemprof...
install4j.keepLog=true
sun.desktop=windows
sun.cpu.isalist=pentium_pro+mmx pentium_pro pentium+m...
[INFO] com.install4j.runtime.beans.actions.misc.RequestPrivilegesAction [ID 304]: Execute action
Property allRequested: false
Property failIfNotRootUnix: true
Property obtainIfAdminMac: false
Property obtainIfNormalWin: false
Property obtainIfNormalMac: false
Property obtainIfAdminWin: true
Property failIfNotObtainedWin: true
Property failIfNotObtainedMac: true
Property rollbackSupported: false
Execute action successful after 1 ms
[INFO] com.install4j.runtime.beans.screens.StartupScreen [ID 1]: command: move 1 screens, executing actions, checking condition
[INFO] com.install4j.runtime.beans.screens.WelcomeScreen [ID 2]: Show screen
[INFO] checking writable with maximum
[INFO] com.install4j.runtime.beans.screens.WelcomeScreen [ID 2]: thread name AWT-EventQueue-0
EDIT 4: My code in Application:
try {
ApplicationLauncher.launchApplication("626", null, false, new ApplicationLauncher.Callback() {
public void exited(int exitValue) {
//TODO add your code here (not invoked on event dispatch thread)
log.debug("******Exited "+exitValue+"********");
log.debug("****Inside block UpdateChecker.isUpdateScheduled() "+String.valueOf(UpdateChecker.isUpdateScheduled()));
boolean updateScheduled=UpdateChecker.isUpdateScheduled();
if(updateScheduled){
log.debug("***************Running UpdateChecker.executeScheduledUpdate*******************");
UpdateChecker.executeScheduledUpdate(Arrays.asList("-q","-Dinstall4j.keepLog=true","-Dinstall4j.alternativeLogfile=E:/install4j-log/log2.txt"), false, null);
log.debug("***************Completed UpdateChecker.executeScheduledUpdate*******************");
}
}
public void prepareShutdown() {
//TODO add your code here (not invoked on event dispatch thread)
log.debug("******prepare shut down********");
}
}
);
} catch (IOException e) {
e.printStackTrace();
//TODO handle invocation failure
}
And the jstack error is as below:
EDIT 5: Below is the jstack log:
2017-09-18 17:31:12
Full thread dump Java HotSpot(TM) Client VM (24.80-b11 mixed mode):
"TimerQueue" daemon prio=6 tid=0x17ecec00 nid=0x3708 waiting on condition [0x1861f000]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x03850980> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
at java.util.concurrent.locks.LockSupport.park(Unknown Source)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(Unknown Source)
at java.util.concurrent.DelayQueue.take(Unknown Source)
at javax.swing.TimerQueue.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Locked ownable synchronizers:
- <0x03884b18> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)
"AWT-EventQueue-0" prio=6 tid=0x17d3f000 nid=0x2670 waiting on condition [0x1841e000]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x08ca4218> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
at java.util.concurrent.locks.LockSupport.park(Unknown Source)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(Unknown Source)
at java.awt.EventQueue.getNextEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Locked ownable synchronizers:
- None
"AWT-Windows" daemon prio=6 tid=0x17d2fc00 nid=0x40c runnable [0x1838f000]
java.lang.Thread.State: RUNNABLE
at sun.awt.windows.WToolkit.eventLoop(Native Method)
at sun.awt.windows.WToolkit.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Locked ownable synchronizers:
- None
"AWT-Shutdown" prio=6 tid=0x17d2f400 nid=0xe68 in Object.wait() [0x182ff000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x08c79758> (a java.lang.Object)
at java.lang.Object.wait(Object.java:503)
at sun.awt.AWTAutoShutdown.run(Unknown Source)
- locked <0x08c79758> (a java.lang.Object)
at java.lang.Thread.run(Unknown Source)
Locked ownable synchronizers:
- None
"Java2D Disposer" daemon prio=10 tid=0x17d2ec00 nid=0x3d64 in Object.wait() [0x1826f000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x08c797e8> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(Unknown Source)
- locked <0x08c797e8> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(Unknown Source)
at sun.java2d.Disposer.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Locked ownable synchronizers:
- None
"Service Thread" daemon prio=6 tid=0x1783bc00 nid=0x468 runnable [0x00000000]
java.lang.Thread.State: RUNNABLE
Locked ownable synchronizers:
- None
"C1 CompilerThread0" daemon prio=10 tid=0x1783a000 nid=0x1768 waiting on condition [0x00000000]
java.lang.Thread.State: RUNNABLE
Locked ownable synchronizers:
- None
"Attach Listener" daemon prio=10 tid=0x17837800 nid=0x389c waiting on condition [0x00000000]
java.lang.Thread.State: RUNNABLE
Locked ownable synchronizers:
- None
"Signal Dispatcher" daemon prio=10 tid=0x17835400 nid=0x3258 runnable [0x00000000]
java.lang.Thread.State: RUNNABLE
Locked ownable synchronizers:
- None
"Finalizer" daemon prio=8 tid=0x0101a800 nid=0x4394 in Object.wait() [0x033bf000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x08ab74f8> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(Unknown Source)
- locked <0x08ab74f8> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(Unknown Source)
at java.lang.ref.Finalizer$FinalizerThread.run(Unknown Source)
Locked ownable synchronizers:
- None
"Reference Handler" daemon prio=10 tid=0x01015800 nid=0x3d50 in Object.wait() [0x0127f000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x08ab7588> (a java.lang.ref.Reference$Lock)
at java.lang.Object.wait(Object.java:503)
at java.lang.ref.Reference$ReferenceHandler.run(Unknown Source)
- locked <0x08ab7588> (a java.lang.ref.Reference$Lock)
Locked ownable synchronizers:
- None
"main" prio=6 tid=0x010ac400 nid=0x3138 in Object.wait() [0x00798000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x038517d0> (a com.install4j.runtime.installer.controller.CommandSink)
at java.lang.Object.wait(Object.java:503)
at com.install4j.runtime.installer.controller.Controller.start(Controller.java:87)
- locked <0x038517d0> (a com.install4j.runtime.installer.controller.CommandSink)
at com.install4j.runtime.installer.Installer.runInProcess(Installer.java:59)
at com.install4j.runtime.installer.Installer.main(Installer.java:46)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.exe4j.runtime.LauncherEngine.launch(LauncherEngine.java:65)
at com.exe4j.runtime.WinLauncher.main(WinLauncher.java:101)
at com.install4j.runtime.launcher.WinLauncher.main(WinLauncher.java:26)
Locked ownable synchronizers:
- None
"VM Thread" prio=10 tid=0x01012400 nid=0x1bf0 runnable
"VM Periodic Task Thread" prio=10 tid=0x17856000 nid=0x2fdc waiting on condition
JNI global references: 449
EDIT 6:
Below is the log of UpdateChecker.executeScheduledUpdate(Arrays.asList("-q","-Dinstall4j.keepLog=true","-Dinstall4j.alternativeLogfile=E:/install4j-log/log2.txt"), false, null);:
[INFO] logger started at Tue Sep 19 11:20:00 IST 2017
[INFO] executable name: C:\Users\Abhishek\Downloads\GreytipAstra_windows_3_0_1.exe
[INFO] install4j version: 7.0.1 (build 7043)
[INFO] Properties:
-- listing properties --
java.runtime.name=Java(TM) SE Runtime Environment
exe4j.moduleName=C:\Users\Abhishek\Downloads\GreytipAs...
sun.boot.library.path=c:\windows\temp\e4j554d.tmp_dir150580...
exe4j.semaphoreName=Local\c:_users_abhishek_downloads_gre...
java.vm.version=24.80-b11
java.vm.vendor=Oracle Corporation
java.vendor.url=http://java.oracle.com/
path.separator=;
exe4j.consoleCodepage=cp0
java.vm.name=Java HotSpot(TM) Client VM
file.encoding.pkg=sun.io
user.script=
user.country=US
sun.os.patch.level=
install4j.exeDir=C:\Users\Abhishek\Downloads\
java.vm.specification.name=Java Virtual Machine Specification
user.dir=C:\WINDOWS\TEMP\e4j554D.tmp_dir150580...
java.runtime.version=1.7.0_80-b15
java.awt.graphicsenv=sun.awt.Win32GraphicsEnvironment
java.endorsed.dirs=c:\windows\temp\e4j554d.tmp_dir150580...
os.arch=x86
java.io.tmpdir=C:\WINDOWS\TEMP\
line.separator=
java.vm.specification.vendor=Oracle Corporation
user.variant=
exe4j.tempDir=C:\WINDOWS\TEMP\e4j554D.tmp_dir150580...
os.name=Windows NT (unknown)
sun.java2d.noddraw=true
sun.jnu.encoding=Cp1252
java.library.path=C:\WINDOWS\TEMP\e4j554D.tmp_dir150580...
sun.awt.enableExtraMouseButtons=true
java.specification.name=Java Platform API Specification
java.class.version=51.0
sun.management.compiler=HotSpot Client Compiler
install4j.language=en
exe4j.isInstall4j=true
os.version=10.0
install4j.updateStorageDir=C:\WINDOWS\system32\config\systemprof...
user.home=C:\Windows\System32\config\systemprofile
user.timezone=Asia/Calcutta
java.awt.printerjob=sun.awt.windows.WPrinterJob
java.specification.version=1.7
file.encoding=Cp1252
user.name=ABHISHEK-PC$
java.class.path=C:\WINDOWS\TEMP\e4j554D.tmp_dir150580...
java.vm.specification.version=1.7
sun.arch.data.model=32
java.home=c:\windows\temp\e4j554d.tmp_dir150580...
sun.java.command=C:\Users\Abhishek\Downloads\GreytipAs...
exe4j.launchName=C:\Users\Abhishek\DOWNLO~1\GREYTI~1.EXE
java.specification.vendor=Oracle Corporation
user.language=en
awt.toolkit=sun.awt.windows.WToolkit
java.vm.info=mixed mode
exe4j.unextractedPosition=25300990
java.version=1.7.0_80
java.ext.dirs=c:\windows\temp\e4j554d.tmp_dir150580...
sun.boot.class.path=c:\windows\temp\e4j554d.tmp_dir150580...
java.vendor=Oracle Corporation
install4j.appDir=C:\Windows\Temp\
file.separator=\
java.vendor.url.bug=http://bugreport.sun.com/bugreport/
sun.cpu.endian=little
sun.io.unicode.encoding=UnicodeLittle
install4j.alternativeLogfile=E:/install4j-log/log2.txt
install4j.lockFile=C:\WINDOWS\system32\config\systemprof...
install4j.keepLog=true
sun.desktop=windows
sun.cpu.isalist=pentium_pro+mmx pentium_pro pentium+m...
[INFO] com.install4j.runtime.beans.actions.misc.RequestPrivilegesAction [ID 304]: Execute action
Property allRequested: false
Property failIfNotObtainedMac: true
Property failIfNotObtainedWin: true
Property failIfNotRootUnix: true
Property obtainIfAdminMac: false
Property obtainIfAdminWin: true
Property obtainIfNormalMac: false
Property obtainIfNormalWin: false
Property rollbackSupported: false
Property updateInstallationDirectory: true
Execute action successful after 1 ms
[INFO] com.install4j.runtime.beans.screens.StartupScreen [ID 1]: command: move 1 screens, executing actions, checking condition
[INFO] com.install4j.runtime.beans.screens.WelcomeScreen [ID 2]: Show screen
[INFO] checking writable with maximum
解决方案
I would recommend updating to install4j 7 which has a lot of new auto-update functionality which works well for services.
With install4j 7, you add a "Background update downloader" application on the Installer->Screen & Actions step. The key action in that application template is the "Schedule update installation" action.
In your service, you launch the update downloader like this:
ApplicationLauncher.launchApplication("<ID>", null, true, null);
in its own thread where <ID> is replaced with the ID of the application. This call blocks and when it returns an update installer may have been downloaded. You can check this condition with
UpdateChecker.isUpdateScheduled()
Now you only need to trigger the execution of the downloaded installer. You can either do that immediately, or at startup if you do not want to terminate the service. The code snippet you need is this:
UpdateChecker.executeScheduledUpdate(Arrays.asList("-q"), false, null);
As part of the update installation, services are shut down. Services cannot auto-restart (which GUI launchers could do if you passed true as the second parameter to the above method call) but have to be started with a "Start a service" action which you probably already have in your installer.
For more information and screen shots, see
https://www.ej-technologies.com/products/install4j/whatsnew7.html
and search for "Background auto-update".
这篇关于无需启动程序即可自动更新Web应用程序即服务的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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