jdbc中ResultSet需要close么
时间: 2024-02-25 17:31:06 浏览: 22
是的,ResultSet需要被关闭。在使用ResultSet获取完数据后,我们应该及时关闭ResultSet,以释放JDBC连接和占用的资源。可以通过ResultSet的close()方法来关闭ResultSet。关闭ResultSet的代码示例:
```
ResultSet rs = null;
Statement stmt = null;
Connection conn = null;
try {
//获取连接
conn = DriverManager.getConnection(url, user, password);
//创建Statement对象
stmt = conn.createStatement();
//执行SQL语句
rs = stmt.executeQuery(sql);
//处理ResultSet数据
while (rs.next()) {
// ...
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
//关闭ResultSet
if (rs != null) {
try {
rs.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
//关闭Statement
if (stmt != null) {
try {
stmt.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
//关闭Connection
if (conn != null) {
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
```