异常信息：
Caused by: org.apache.velocity.exception.ParseErrorException: Encountered "{" at distribute/alltranslator.vm[line 303, column 16] Was expecting one of: <EOF> "(" ... <RPAREN> ... <ESCAPE_DIRECTIVE> ... <SET_DIRECTIVE> ... "##" ... "\\\\" ... "\\" ... <TEXT> ... "*#" ... "*#" ... <STRING_LITERAL> ... <IF_DIRECTIVE> ... <STOP_DIRECTIVE> ... <INTEGER_LITERAL> ... <FLOATING_POINT_LITERAL> ... <WORD> ... <BRACKETED_WORD> ... <IDENTIFIER> ... <DOT> ... "{" ... "}" ...
明明前端js代码写的没问题，但就是出现了异常，出现异常的那一行的代码为$.ajax()，表面上没问题，但在vm解析的时候，会解析存在的$符号，尽管是jquery的$符，但vm不知道，所以就出现解析错误。
改正：$.ajax() -> jQuery.ajax()