为什么目前 Firefox 封锁了 Java Deployment Toolkit click-to_百度知道
为什么目前 Firefox 封锁了 Java Deployment Toolkit click-to
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而专门运行在x86平台，JDK已经成为使用最广泛的Java SDK，包括了Java运行环境..。JDK 是整个Java的核心。JDK是学好Java的第一步，Java工具和Java基础的类库。自从Java推出以来JDK(Java Development Kit)是Sun Microsystems针对Java开发员的产品
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出门在外也不愁What is the Java Deployment Toolkit?
This article applies to:
Platform(s): Windows 10, Windows 7, Windows 8, Windows Vista, Windows XP
Browser(s) Firefox, Internet Explorer
What does the Java Deployment Toolkit (DT) do?
The Java DT is a very useful tool, used by Java
applets and applications to help manage getting the right version of Java for a user’s system.
For developers, it also provides a JavaScript interface.
The interface automatically generates the HTML code that is required to deploy Rich Internet Applications (RIAs).
Does the 'Java DT plug-in blocked' message means the Java plug-in is blocked?
No, blocking the Java DT plug-in does not mean the Java plug-in is blocked.
The Java DT plug-in does the Java version detection on a user’s system.
The Java plug-in enables the Java applets and applications to run within a browser on a user’s system.
What happens if the Java Deployment Toolkit plug-in is blocked?
By blocking the Java DT plug-in, the Java version detection mechanism is disabled.
Therefore, when a user tries to launch a Java applet or application, that requires a specific Java version other than the active Java version on a user’s system, it will fail.
Will my Java plug-in function if the Java DT plug-in is disabled?
Yes, the Java plug-in will continue to work even if the Java DT plug-in is disabled.
Does deployJava.js work if the Java DT Toolkit plug-in is disabled?
Yes, deployJava.js contains some pure JavaScript functions, which will continue to work even if the Java DT Toolkit plug-in is disabled.Java plug-in does not work in Firefox after installing Java
This article applies to:
Browser(s) Firefox
Java version(s): 7.0, 8.0
Firefox 42 crashes when trying to run the Java plug-in
NOTE: The workaround applies to Firefox 42, and requires Windows Java Version 8 Update 66 Build 18 or later versions. >>
for related information.
Workaround
A few options are listed. The simplest method is noted first and recommended. Other available options are not recommended for non-technical users.
Option 1 (Simplest method)Add property name dom.ipc.plugins.java.enabled in Firefox preferences
Launch Firefox
Type about:config in the address bar
You will be presented with a Firefox warning about the configuration settings. After acknowledging the Firefox alert, you should see a listing of the configuration preferences.
Right-click anywhere inside the displayed list of preferences. Select New then select Boolean.
Add property name as dom.ipc.plugins.java.enabled
Add Preference name as dom.ipc.plugins.java.enabled.
A window will be displayed, select false. Then select OK.
Option 2Create "user.js" file with preference entry
Instructions are based on Mozilla references listed below.
Use a text editor to create a "user.js" file in your Firefox profiles folder
Add entry:
user_pref("dom.ipc.plugins.java.enabled", false);
Option 3 Update "pref.js" file with preference entry
Locate the "pref.js" file in the Mozilla profiles folder
Find and update preference
user_pref("dom.ipc.plugins.java.enabled", false);
Mozilla references
Firefox warning message: Add-ons may be causing problems
The following message appears while launching Firefox browser with the warning:
Firefox has determined that the following add-ons are known to cause
stability or security problems
Older versions of the Java Deployment Toolkit (DT) and the Java Plugin have been disabled by Firefox. Some Java versions are flagged by Firefox as 'Add-ons may be causing problems'.
If Firefox thinks an add-on is unsafe and can cause a security risk, it will block it from loading. In case of a soft block Firefox will present a warning message but will allow the user to continue if they wish but with compromised security. In the case of a hard block Firefox will block installation so that the user cannot use this add-on. To resolve this, the user should update to latest version of Java.
Workaround
Upgrading to the latest Java 7 version should resolve the issue.
If you see the warning message, follow these steps:
Ensure that the Disable box is checked.
Click on Restart Firefox.
Download the .
Upon completing install of Java 7u10 and above, following error appears:
Error: A plug-in is needed to display this content. Install Plugin
This could be due to a conflict that Java versions 7u10 and above have with stand alone installations of JavaFX.
Example: If Java 7u5 and JavaFX 2.1.1 are installed and if Java is updated, Firefox is unable to detect that the newly installed Java.
Workaround
Remove stand-alone version of JavaFX (Windows)
through the Windows Uninstall Control Panel.
to repair corrupted registry keys that prevents programs from being completely uninstalled or blocking new installations and updates.
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Microsystems针对Java开发员的产品.0开始。从SUN的JDK5，包括了Java运行环境;SDK;是整个Java的核心，Java工具和Java基础的类库;JDK好很多。而专门运行在x86平台的Jrocket在服务端运行效率也要比Sun&nbspJDK(Java&Development&nbsp。JDK&nbsp,提供了泛型等非常实用的功能。JDK是学好Java的第一步。自从Java推出以来，运行效率得到了非常大的提高;Kit)是Sun&nbsp，JDK已经成为使用最广泛的Java&nbsp，其版本也不断更新
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出门在外也不愁安裝 Java 之後，Java 外掛程式無法在 Firefox 中運作
本文適用於:
瀏覽器: Firefox
Java 版本: 7.0, 8.0
Firefox 42 在嘗試執行 Java 外掛程式時當機
注意：此解決方法適用於 Firefox 42，而且需要 Windows Java 版本 8 Update 66 Build 18 或更新版本。>>請參閱
以瞭解相關資訊。
會列出一些選項。最簡單的方法是第一個提及的方法，也是建議的方法。其他可用的選項則不建議非技術使用者採用。
選項 1 (最簡單的方法)在 Firefox 偏好設定中新增特性名稱 dom.ipc.plugins.java.enabled
啟動 Firefox
在網址列中輸入 about:config
您會看到 Firefox 顯示關於組態設定的警告。在確認 Firefox 警示後，您會看到組態偏好設定的清單。
在顯示的偏好設定清單內的任何位置，按一下滑鼠右鍵。依序選取新增、布林（Boolean）值。
新增名稱為 dom.ipc.plugins.java.enabled 的特性新增偏好設定名稱 dom.ipc.plugins.java.enabled。
隨後將顯示一個視窗，請選取 false。然後選取確定。
選項 2建立內含偏好設定項目的 "user.js" 檔案
以下是根據 Mozilla 參考資料所列出的指示。
使用文字編輯器在您的 Firefox 設定檔資料夾中建立 "user.js" 檔案
新增項目： user_pref("dom.ipc.plugins.java.enabled", false);
選項 3更新內含偏好設定項目的 "pref.js" 檔案
在 Mozilla 設定檔資料夾中找到 "pref.js" 檔案
尋找並更新偏好設定 user_pref("dom.ipc.plugins.java.enabled", false);
Mozilla 偏好設定
Firefox 警告訊息：附加元件可能會造成問題
啟動 Firefox 瀏覽器時，出現以下訊息及警告：
Firefox 已判斷以下附加元件已知會造成穩定性或安全性問題
Firefox 已停用舊版的 Java Deployment Toolkit (DT) 和 Java 外掛程式。Firefox 已將部分 Java 版本標記為「附加元件可能會造成問題」。
如果 Firefox 認為某個附加元件不安全且可造成安全性風險，將會封鎖下載該附加元件。如果是彈性封鎖，Firefox 將會顯示警告訊息，若使用者希望下載仍可繼續進行 (有違安全性)。如果是硬性封鎖，Firefox 將會封鎖安裝，讓使用者無法使用這個附加元件。使用者應更新為最新版本的 Java 以解決此問題。
升級至最新的 Java 7 版本應可解決此問題。若您看到此警告訊息，請依循以下步驟：
確定已勾選「停用」方塊。
按一下「重新啟動 Firefox」。
完成 Java 7u10 和更新版本的安裝之後，會顯示以下錯誤：
錯誤：需要某個外掛程式才能顯示此內容。安裝外掛程式
這可能是因為 Java 版本 7u10 和更新版本與 JavaFX 的獨立安裝發生衝突。範例：如果已經安裝 Java 7u5 與 JavaFX 2.1.1，且 Java 已經更新，Firefox 會無法偵測出新安裝的 Java。
移除獨立版本的 JavaFX (Windows)
從 Windows 解除安裝控制台 和 。
執行 來修復損毀的登錄機碼，這些登錄機碼會讓程式無法完全解除安裝或導致新安裝和更新無法執行。
(mozilla.org)
(mozilla.org)
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