java 正确的 JNDI @Resource(name)
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Correct JNDI @Resource(name)
提问by Joe
I have the following class for obtaining a JDBC connection:
我有以下用于获取 JDBC 连接的类：
package util;
import java.sql.Connection;
import java.sql.SQLException;
import javax.annotation.Resource;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.sql.DataSource;
public class OracleConnection implements AutoCloseable{
private final String oracle_DS_CTX = "java:jboss/oracleDS";
// @Resource(name="java:jboss/oracleDS")
// private DataSource ds; //doesn't work
private Connection _conn;
public OracleConnection() throws SQLException, NamingException{
Context ctx = new InitialContext();
DataSource ds = (DataSource) ctx.lookup(oracle_DS_CTX);
_conn = ds.getConnection();
}
@Override
public void close() throws Exception {
if(_conn != null){
_conn.close();
}
}
public Connection getConnection() throws SQLException {
return _conn;
}
}
I have a problem using the @Resourceannotation. Datasource obtained via InitialContext works without any problems but I am not sure what string should I put into resource name (commented out in my code).
我在使用@Resource注释时遇到问题。通过 InitialContext 获得的数据源工作没有任何问题，但我不确定应该将什么字符串放入资源名称（在我的代码中注释掉）。
I have tried:
我努力了：
@Resource(name="java:jboss/oracleDS")
@Resource(name="java:jboss/oracleDS")
@Resource(name="oracleDS")
@Resource(name="oracleDS")
AS is JBOSS AS7
AS是JBOSS AS7
回答by Rodrigo Sasaki
What name did you define in your standalone.xml?
你在你的standalone.xml 中定义了什么名字？
That is the name you need to define in your @Resource
那是您需要在您的 @Resource
But there's a little trick, you need to set it in the lookupproperty instead of name.
但是有一个小技巧，您需要在lookup属性而不是name 中设置它。
Here's an example, let's assume my DS jndi is java:jboss/ExampleDS.
这是一个例子，让我们假设我的 DS jndi 是java:jboss/ExampleDS.
@Resource(lookup = "java:jboss/ExampleDS")
private DataSource dataSource;
