摘要： 1.在值栈中添加一个元素的属性：package ajax.frist;import java.sql.*;import java.util.*;import com.opensymphony.xwork2.ActionSupport;public class query extends ActionSupport { ArrayList al=new ArrayList(); public ArrayList getAl() { return al; } public void setAl(ArrayList al) { this.al = al; } @Override public S.. 阅读全文