【发布时间】:2013-12-24 00:29:54
【问题描述】:
java 中的类连接:
try {
Class.forName("org.postgresql.Driver");
Properties props = new Properties();
props.setProperty("user","postgres");
props.setProperty("password","postgres");
Connection conn = DriverManager.getConnection(url, props);
String stsql = "SELECT * From mercarderia";
Statement st = conn.createStatement();
ResultSet rs = st.executeQuery(stsql);
while (rs.next()) {
String c = rs.getString("nombre");
System.out.println(c);
}
conn.close();
} catch (SQLException se) {
System.out.println("oops! No se puede conectar. Error: " + se.toString()+se.getErrorCode());
msj.setText("oops! No se puede conectar. Error: " + se.toString() + "||" +se.getErrorCode());
} catch (ClassNotFoundException e) {
System.out.println("oops! No se encuentra la clase. Error: " + e.getMessage() +" "+ e.getException());
msj.setText("oops! No se encuentra la clase. Error: " + e.getMessage());
}
}
我明白了:
Error: java.lang.NoClassDefFoundError: org.postgresql.Driver
请帮助...
postgresql 9.3 版
*JDK 1.8
Eclipse 和 SDK 官方*
现在我收到以下错误消息:java.lang.VerifyError: org.postgresql.Driver
并且驱动程序在“libs”文件夹中
【问题讨论】:
-
嗯,你下载并把Postgres JDBC driver 放在你的类路径上了吗?
标签: java android sql postgresql