我在 Amazon EC2 Ubuntu 服务器中运行一个基于 Java 的 Web 应用程序。我使用 Jasper 报告生成一些 PDF 格式的报告。我使用“Jaspersoft Studio”构建了这些报告
现在，当我尝试生成报告时，出现此错误
net.sf.jasperreports.engine.util.jrfontnotfoundexception font 'Times New Roman' is not available to the jvm
因此，我决定安装 Microsoft 字体。我输入：
sudo apt-get install ttf-mscorefonts-installer
它根本不起作用。相反，它给了我以下通知
$ sudo apt-get install ttf-mscorefonts-installer
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package ttf-mscorefonts-installer is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'ttf-mscorefonts-installer' has no installation candidate
我该如何解决这个问题？
更新
我的source.list包含以下内容。我可以安全地编辑吗？
## Note, this file is written by cloud-init on first boot of an instance
## modifications made here will not survive a re-bundle.
## if you wish to make changes you can:
## a.) add 'apt_preserve_sources_list: true' to /etc/cloud/cloud.cfg
## or do the same in user-data
## b.) add sources in /etc/apt/sources.list.d
## c.) make changes to template file /etc/cloud/templates/sources.list.tmpl
#
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty main
deb-src http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty main
## Major bug fix updates produced after the final release of the
## distribution.
deb http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty-updates main
deb-src http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty-updates main
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty universe
deb-src http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty universe
deb http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty-updates universe
deb-src http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty-updates universe
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
# deb http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty multiverse
# deb-src http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty multiverse
# deb http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty-updates multiverse
# deb-src http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty-updates multiverse
## Uncomment the following two lines to add software from the 'backports'
## repository.
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
# deb http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse
# deb-src http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse
## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu trusty partner
# deb-src http://archive.canonical.com/ubuntu trusty partner
deb http://security.ubuntu.com/ubuntu trusty-security main
答案1
您可以使用以下两种方法来安装该软件。
命令行安装
echo "deb http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty multiverse
deb http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty-updates multiverse
deb http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse" | sudo tee /etc/apt/sources.list.d/multiverse.list
sudo apt-get update
sudo apt-get install ttf-mscorefonts-installer
易于安装
打开 ubuntu 软件中心，点击编辑并选择软件源从下拉菜单中。
在方框中打勾受版权或法律问题限制的软件（多元宇宙）。
可能会要求您输入密码。
完成后，运行以下命令：
sudo apt-get update
sudo apt-get install ttf-mscorefonts-installer
答案2
您的标签是 12.04，但是您的 sources.list 是针对 14.04 的？
该包位于multiverse存储库中。
编辑您的sources.list
sudo nano /etc/apt/sources.list
更新问题后，只需删除以以下内容开头#的每一行前面的debmultiverse
list以下是根据您的文件复制粘贴的完整列表
## Note, this file is written by cloud-init on first boot of an instance
## modifications made here will not survive a re-bundle.
## if you wish to make changes you can:
## a.) add 'apt_preserve_sources_list: true' to /etc/cloud/cloud.cfg
## or do the same in user-data
## b.) add sources in /etc/apt/sources.list.d
## c.) make changes to template file /etc/cloud/templates/sources.list.tmpl
#
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty main
deb-src http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty main
## Major bug fix updates produced after the final release of the
## distribution.
deb http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty-updates main
deb-src http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty-updates main
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty universe
deb-src http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty universe
deb http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty-updates universe
deb-src http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty-updates universe
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty multiverse
deb-src http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty multiverse
deb http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty-updates multiverse
deb-src http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty-updates multiverse
## Uncomment the following two lines to add software from the 'backports'
## repository.
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse
## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu trusty partner
# deb-src http://archive.canonical.com/ubuntu trusty partner
deb http://security.ubuntu.com/ubuntu trusty-security main
做同样的事情/etc/cloud/templates/sources.list.tmpl
在那之后
sudo apt-get update
sudo apt-get install ttf-mscorefonts-installer
特别说明 Amazon EC2 Ubuntu 服务器
编辑您的
/etc/cloud/cloud.cfgnano /etc/cloud/cloud.cfg并添加
apt_preserve_sources_list: truelist在文件夹中的单独文件中添加额外的 PPA 或非 Ubuntu 源/etc/apt/sources.list.d/etc/apt/sources.list在中进行更改/etc/cloud/templates/sources.list.tmpl在重新捆绑后也能生存下来。