当我使用此命令时安装新捆绑包时遇到问题：
php composer.phar require mesd/jasper-report-bundle "~1.0"
显示以下错误：
C:\wamp\www\ADMSymfony>php composer.phar require mesd/jasper-report-bundle "~1.0"
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.
Problem 1
- The requested package friendsofsymfony/user-bundle == 1.3.5.0 could not be found.
Potential causes:
- A typo in the package name
- The package is not available in a stable-enough version according to your minimum-stability setting
see <https://groups.google.com/d/topic/composer-dev/_g3ASeIFlrc/discussion> for more details.
Read <https://getcomposer.org/doc/articles/troubleshooting.md> for further common problems.
Installation failed, reverting ./composer.json to its original content.
这是我的composer.json：
{
"require": {
"friendsofsymfony/user-bundle": "~2.0@dev",
"widop/google-analytics-bundle": "*",
"whiteoctober/tcpdf-bundle": "*",
"knplabs/knp-snappy-bundle": "dev-master"
}
}