java过滤器切面中如何从request获取的form-data格式的body里提取有用信息

Question

--A16pNHqNfups5JIuOhLB2Qc0wg7PuZhI_
 Content-Disposition: form-data; name="userId"
 Content-Type: text/plain;charset=UTF-8
 Content-Length: 18c
 
 618799280349511681
 --A16pNHqNfups5JIuOhLB2Qc0wg7PuZhI_
 Content-Disposition: form-data; name="password"
 Content-Type: text/plain;charset=UTF-8
 Content-Length: 9
 
123456
 --A16pNHqNfups5JIuOhLB2Qc0wg7PuZhI_--

body如上所示，通过流的方式从request中读取的body,请问如何才能把userId=618799280349511681&password=123456提取出来，谢谢

Answer 1

根据&符合分割，一般使用request. getparameter方法获取