本文介绍了带有mysql DataSource的javax.naming.NoInitialContextException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
尝试连接到MySQL数据库
Trying to connect to a MySQL database
MysqlDataSource mysqlDs = new MysqlDataSource();
Properties prop = new Properties();
String mysqlDataSourceDriver = "com.mysql.jdbc.jdbc2.optional.MysqlDataSource";
Properties properties = new Properties();
properties.put(Context.INITIAL_CONTEXT_FACTORY, mysqlDataSourceDriver);
properties.put(Context.PROVIDER_URL , "jdbc:mysql://localhost:3306/database");
Context ctx = new InitialContext(prop);
ctx.bind("jdbc/wczasy", mysqlDs);
堆栈跟踪:
javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:662)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:307)
at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:344)
at javax.naming.InitialContext.bind(InitialContext.java:419)
at src.wczasy.database.Connector.connect(Connector.java:53)
at src.wczasy.Wczasy.main(Wczasy.java:10)
由行引起:ctx.bind( jdbc / wczasy,mysqlDs);
我被卡住了,有人可以帮帮我吗?谢谢。
Caused by line: ctx.bind("jdbc/wczasy", mysqlDs);I am stuck, can anyone help me out? Thanks.
推荐答案
这是因为 MysqlDataSource
未实现 javax.naming.spi.InitialContextFactory
interface。
This is because MysqlDataSource
is not implementing javax.naming.spi.InitialContextFactory
interface.
如果您不在容器中,可以使用rmi注册表。类似于:
If you are not in a container you can use rmi registry. Something like:
try{
startRegistry();
InitialContext context = createContext();
MysqlDataSource mysqlDs = new MysqlDataSource();
context.rebind("jdbc/wczasy", mysqlDs);
} catch (Exception e) {
System.out.println("Error while binding: " + e.getMessage());
e.printStackTrace();
}
private static void startRegistry() throws RemoteException {
LocateRegistry.createRegistry(1099);
System.out.println("RMI registry ready.");
}
private static InitialContext createContext() throws NamingException {
Properties env = new Properties();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.rmi.registry.RegistryContextFactory");
env.put(Context.PROVIDER_URL, "rmi://localhost:1099");
InitialContext context = new InitialContext(env);
return context;
}
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