3.3.2 input field types supported

struts defines html tags for all of the following types of input fields, with hyperlinks to the corresponding reference information. ·   checkboxes ·   hidden fields ·   password input fields ·   radio buttons ·   reset buttons ·   select lists with embedded option or options items ·   option ·   options ·   submit buttons ·   text input fields ·   textareas 上面的这些tag必须被嵌入到一个form tag之中，以便这些域知道哪个bean来初始化自己。