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无法加载驱动程序：com.mysql.jdbc.Driver

[英]Unable to load driver: com.mysql.jdbc.Driver

原文 2016-02-25 09:00:58 2 1 php/ mysql/ database/ jdbc/ laravel-5

I try to use Jasper to generate report in Laravel. 我尝试使用Jasper在Laravel中生成报告。 It's work perfect if I didn't use database, if I add database to get data from mysql database he gives me an error "Unable to load driver: com.mysql.jdbc.Driver". 如果我不使用数据库，那是完美的工作，如果我添加数据库以从mysql数据库获取数据，他会给我一个错误“无法加载驱动程序：com.mysql.jdbc.Driver”。 I install JDBC Connector and Setup ODBC connection to local mysql server: 我安装了JDBC连接器，并建立了与本地mysql服务器的ODBC连接：

Also I setup CLASSPATH to MySQL connector: 我也将CLASSPATH设置为MySQL连接器：

Because laravel print me that have some error to generate pdf with database connection I change it to print output command and ran it in terminal and he gives me an error that "Unable to load driver: com.mysql.jdbc.Driver", see next picture: 因为laravel打印我在通过数据库连接生成pdf时出现一些错误，所以我将其更改为打印输出命令并在终端中运行它，并且给了我一个错误“无法加载驱动程序：com.mysql.jdbc.Driver”，请参见下一个图片：

If you have ANY idea I will be grateful! 如果您有任何想法，我将不胜感激！

1 个解决方案

A lot of Java applications do not use the CLASSPATH environment variable, and it looks like jasperstarter is one of them. 许多Java应用程序不使用CLASSPATH环境变量，而jasperstarter就是其中之一。

Looking at http://jasperstarter.cenote.de/usage.html you need to use the command line option --jdbc-dir <directory with driver jar(s)> : 查看http://jasperstarter.cenote.de/usage.html，您需要使用命令行选项--jdbc-dir <directory with driver jar(s)> ：

--jdbc-dir <dir> directory where jdbc driver jars are located. --jdbc-dir <dir> jdbc驱动程序jar所在的目录。 Defaults to ./jdbc 默认为./jdbc

Alternatively, as you indicated in the comments, you can put the driver in the JasperStarter/jdbc folder, as that is the default location. 另外，如注释中所述，您可以将驱动程序放在JasperStarter/jdbc文件夹中，因为这是默认位置。