struts2的校验文件报错

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE validators PUBLIC "-//OpenSymphony Group//XWork Validator 1.0.2//EN"

"http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd">

报错：

Referenced file contains errors (http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd). For more information, right click on the message and select "Show Details..." struts2_004_basicValidate/src/lee RegistAction-validation.xml line 1 1308235818609 92

改成这样不报错了

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE validators PUBLIC "-//Apache Struts//XWork Validator 1.0.2//EN" "http://struts.apache.org/dtds/xwork-validator-1.0.2.dtd">