bug fixed for eval
improve sql wall
Merge remote-tracking branch 'upstream/master'
improve sql wall
Merge remote-tracking branch 'upstream/master'
去掉无用变量
improve sql wall
Merge remote-tracking branch 'upstream/master'
druid-0.2.26
change to snapshot
Merge remote-tracking branch 'upstream/master'
improve sql parser & wall
add  testcase
bug fixed for sql parser
修正无限重定向问题
修正名称显示的问题
支持从header中读取IP地址
Merge remote-tracking branch 'upstream/master'
增加toString的实现
improve sql wall, support rand