相关疑难解决方法(0)

我想编写一个简单的java代理,它可以打印由java程序调用的方法的名称.

例如,我想要的java程序是:

public class TestInstr {

public static void sayHello() {
    System.out.println("Hello !");
}

public static void main(String args[]) {
    sayHello();
    sayHello();
    sayHello();
 }

}

我想展示这样的东西:

method sayHello has been called
Hello !
method sayHello has been called
Hello !
method sayHello has been called
Hello !

谢谢你的帮助!

有没有办法可以记录/记录/监视/查看Java程序内每个方法的执行.

例如:

12:30:12 someMethod("argument")
12:30:12 anotherMethos(1, 2, 3)
12:30:13 finalMethod("invalidInputHere1234")

我有一个DAO类,有很多方法,有很多重复的代码:

public void method1(...) {
  Connection conn = null;
  try {
      //custom code here
  } catch (SQLException e) {
     LOG.error("Error accessing the database.", e);
     throw new DatabaseException();
  } catch (QueryNotFoundException e) {
     LOG.error("Error accessing the database.", e);
     throw new DatabaseException();
  } finally {
     if (conn != null)
        connectionPool.returnConnection(conn);
  } 

public void method2(...) {
  Connection conn = null;
  try {
      //different custom code here
  } catch (SQLException e) {
     LOG.error("Error accessing the database.", e);
     throw new DatabaseException();
  } catch (QueryNotFoundException e) …