非一般字符转义

 http://www.theblacksheeponline.com/party_img/thumbspps/12390867930_15951_186997180114_709920114_4296270_6115611_n[1].jpg

对于[]这两个字符的转义应该为[ %5B   ] 用%5D

或者

java.net.URLEncoder
 

URLEncoder.encode(myurltoencode,"UTF-8");