我有一个Eclipse Web项目。我在根目录下有一个名为deploy.properties的文件,它似乎没有被读取。我有一种感觉,我可能需要将文件添加到“构建路径”(如jar),但这只是一个猜测,当我尝试这样做时,没有将文件添加到构建路径的选项,以至于让我觉得我错了。Eclipse不会读取配置文件
线89是这样的一个props.load(stream);
我的堆栈跟踪看起来是这样的:
java.lang.NullPointerException
at java.util.Properties$LineReader.readLine(Properties.java:365)
at java.util.Properties.load(Properties.java:293)
at sempedia.dao.Dao.getConfigFile(Dao.java:89)
at sempedia.dao.Dao.<clinit>(Dao.java:17) 89
和类看起来是这样的:
public class Dao {
private static final String configFileLocation = "/deploy.properties";
private static final Properties configFile = getConfigFile(configFileLocation);
private static final String host = configFile.getProperty("mysql.host");
private static final String port = configFile.getProperty("mysql.port");
private static final String db = configFile.getProperty("mysql.db");
private static final String user = configFile.getProperty("mysql.user");
private static final String pwd = configFile.getProperty("mysql.pwd");
public static String getHost() { return host; }
public static String getPort() { return port; }
public static String getDb() { return db; }
public static String getUser() { return user; }
public static String getPwd() { return pwd; }
public static Connection getCon() {
Connection con = null;
try {
String url = "jdbc:mysql://" + host + ":" + port + "/" + db;
Class.forName("com.mysql.jdbc.Driver").newInstance();
con = DriverManager.getConnection(url, user, pwd);
} catch (SQLException e) {
e.printStackTrace();
} catch (InstantiationException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
return con;
}
private static Properties getConfigFile(String fileName) {
Properties props = new Properties();
try {
InputStream stream = Dao.class.getResourceAsStream(fileName);
props.load(stream);
} catch (IOException e) {
System.err.println("Error opening configuration file");
System.exit(1);
}
return props;
}
}
令人毛骨悚然。看起来你正在做一些与我目前在工作中非常相似的东西。 :) – Neil 2011-05-16 07:49:36
@尼尔...这是一个小世界:) – Ankur 2011-05-16 07:56:37