package com.action; import com.bean.StudentBean; import com.dao.StudentDao; import com.opensymphony.xwork2.ActionSupport; import org.apache.struts2.ServletActionContext; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import java.io.PrintWriter; import java.util.List; public class StudentManager extends ActionSupport { //下面是Action内用于封装用户请求参数的属性 private List list; private int a; public int getA() { return a; } public void setA(int a) { this.a = a; } public List getList() { return list; } public void setList(List list) { this.list = list; } private String SearchRow; private String SearchKey; private String State; public String getState() { return State; } public void setState(String state) { State = state; } public String getSearchRow() { return SearchRow; } public void setSearchRow(String searchRow) { SearchRow = searchRow; } public String getSearchKey() { return SearchKey; } public void setSearchKey(String searchKey) { SearchKey = searchKey; } //处理用户请求的execute方法 public String execute() throws Exception { //解决乱码,用于页面输出 HttpServletResponse response=null; response=ServletActionContext.getResponse(); response.setContentType("text/html;charset=UTF-8"); response.setCharacterEncoding("UTF-8"); PrintWriter out = response.getWriter(); //创建session对象 HttpSession session = ServletActionContext.getRequest().getSession(); //验证是否正常登录 if(session.getAttribute("id")==null){ out.print(""); out.flush();out.close();return null; } //查询条件 String strWhere="1=1"; if(!(isInvalid(SearchKey))) { strWhere+=" and "+SearchRow+"='"+SearchKey+"'"; } if(!(isInvalid(State))) { strWhere+=" and Student_State='"+State+"'"; } else {strWhere+="and Student_State='入住'";} //查询所有楼宇 //List list; if(session.getAttribute("number111")==null){ a=1; list=new StudentDao().GetAllList1(a);} else //查询所有 list=new StudentDao().GetList("","Student_Name"); return SUCCESS; } //判断是否空值 private boolean isInvalid(String value) { return (value == null || value.length() == 0); } //测试 public static void main(String[] args) { System.out.println(); } }