我的一些 Ant 任务在 FDT 中失败。错误通常是:
BUILD FAILED
Problem: failed to create task or type fdt.invoke.launchConfiguration
Cause: The name is undefined.
Action: Check the spelling.
Action: Check that any custom tasks/types have been declared.
Action: Check that any <presetdef>/<macrodef> declarations have taken place
到底是怎么回事?