public class WebUtils {

//把request对象中的请求参数封装到bean中

public static <T> T request2Bean(HttpServletRequest request,Class<T> clazz){

try{

T bean = clazz.newInstance();

//username=aa password=bb email=aa@sina.com

Enumeration e = request.getParameterNames(); 

while(e.hasMoreElements()){

String name = (String) e.nextElement();  //username=aaa password=123

String value = request.getParameter(name);

BeanUtils.setProperty(bean, name, value);

}

return bean;

}catch (Exception e) {

throw new RuntimeException(e);

}

}

}