我需要将结果集转换为字符串数组。我正在从数据库中读取电子邮件地址,我需要能够像这样发送它们:
message.addRecipient(Message.RecipientType.CC, "[email protected],[email protected],[email protected]");
这是我的阅读电子邮件地址的代码:
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
public class Test {
public static void main(String[] args) {
Connection conn = null;
String iphost = "localhost";
String dbsid = "ASKDB";
String username = "ASKUL";
String password = "askul";
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
String sql = "SELECT * FROM EMAIL";
conn = DriverManager.getConnection("jdbc:oracle:thin:@" + iphost + ":1521:" + dbsid, username, password);
Statement st = conn.createStatement();
ResultSet rs = st.executeQuery(sql);
String[] arr = null;
while (rs.next()) {
String em = rs.getString("EM_ID");
arr = em.split("\n");
for (int i =0; i < arr.length; i++){
System.out.println(arr[i]);
}
}
} catch (Exception asd) {
System.out.println(asd);
}
}
}
MyOutput是:
[email protected]
[email protected]
我需要这样:
[email protected],[email protected]
我正在使用Oracle 11g。
最佳答案
获得所需的输出:
替换这些行
String[] arr = null;
while (rs.next()) {
String em = rs.getString("EM_ID");
arr = em.split("\n");
for (int i =0; i < arr.length; i++){
System.out.println(arr[i]);
}
}
经过
String arr = null;
while (rs.next()) {
String em = rs.getString("EM_ID");
arr = em.replace("\n", ",");
System.out.println(arr);
}