Java中怎样实现批量删除操作（Java对数据库进行事务处理）? (四)

public class OutDateQiuzuServlet extends HttpServlet {
QiuZuBiz qzb=new QiuZuBiz();
PageBiz pb=new PageBiz();
int pagesize=10;
boolean flag=true;
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding("gb2312");
response.setContentType("text/html;charset=gb2312");
int countpage=pb.getOutDatePageCountQiuzu(pagesize);
request.setAttribute("countpage", countpage);
String nowpage=request.getParameter("nowpage");
String id=request.getParameter("id");
PrintWriter out = response.getWriter();
String command = request.getParameter("command");

if ("del".equals(command)) {
String[] qiuzuIds = request.getParameterValues("selectFlag");
boolean flag = qzb.delQiuzuMany(qiuzuIds);
if(flag){
out.print("<script>alert('删除成功！');");
}else{
out.print("<script>alert('删除失败！');");
}
}

if(nowpage==null){
nowpage="1";
}
if(Integer.valueOf(nowpage)<=0){
nowpage="1";
}
if(Integer.valueOf(nowpage)>countpage){
nowpage=countpage+"";
}
if(id!=null){
flag=qzb.delQiuZu(id);
}
request.setAttribute("currentpage", nowpage);
List list=qzb.getOutDateQiuZuInfo(Integer.valueOf(nowpage), pagesize);
request.setAttribute("list1", list);
if(flag){
request.getRequestDispatcher("admin/OutDateQiuzu.jsp").forward(request, response);
}
}

public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

doGet(request,response);
}

}

上面是对数据库的操作代码，下面看一下页面中怎样实现的，代码如下：

[html] <%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>



<script type="text/java script">
//删除用户控制
function deleteSelect() {
var select = document.getElementsByName("selectFlag");
var flag = false;
for (var i=0; i if (select[i].checked) {
flag = true;
break;
}
}
if (!flag) {
alert("请选择需要删除的过期求租信息！");
return;
}
if (window.confirm("确认要删除过期的求租信息吗？")) {
with (document.getElementById("userform")) {
action="OutDateQiuzuServlet command=del";
method="post";
submit();
}
}
}

//全选/反选操作
function checkAll(ifAll) {
var select = document.getElementsByName("selectFlag");
for(var i = 0;i select[i].checked = ifAll.checked;
}
}