java如何查出那个线程和方法一直在持有jdbc连接
时间: 2024-03-16 09:43:21 浏览: 20
可以通过使用JDBC API提供的方法来查找当前哪些线程正在使用JDBC连接。可以使用以下代码片段来实现:
```java
import java.sql.*;
public class JdbcConnectionUtil {
public static void main(String[] args) throws Exception {
String url = "jdbc:mysql://localhost:3306/testdb";
String user = "username";
String password = "password";
Connection conn = DriverManager.getConnection(url, user, password);
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("show processlist");
while (rs.next()) {
String id = rs.getString("Id");
String user1 = rs.getString("User");
String host = rs.getString("Host");
String db = rs.getString("db");
String command = rs.getString("Command");
String time = rs.getString("Time");
String state = rs.getString("State");
String info = rs.getString("Info");
System.out.println(id + "," + user1 + "," + host + "," + db + "," + command + "," + time + "," + state + "," + info);
}
rs.close();
stmt.close();
conn.close();
}
}
```
这个代码片段利用了MySQL的show processlist命令来获取当前正在执行的线程信息,包括持有JDBC连接的线程和方法。可以通过解析这些信息来找到持有JDBC连接的线程和方法。
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