It is recommended that you enclose the trace mask with double quotation marks to avoid possible misinterpretation of the asterisk character by the operating-system shell.
建议您用双引号将跟踪屏蔽括起来，以免操作系统shell对星号发生错误判断。
2
Unfortunately its failure model is a double-edged sword. Instead of throwing application-crashing exceptions, binding errors are quietly written to the trace listener.