java实现选中删除功能的实例代码
分析：
通过form表单传递数据，删除数据根据id编号删除。
前台
<a class="btn btn-primary" href="javascript:void(0);" rel="external nofollow" id="delSelected">删除选中</a>
</div>
<form id="form" action="${pageContext.request.contextPath}/delSelectedServlet" method="post">
<table border="1" class="table table-bordered table-hover">
<tr class="success">
<th><input type="checkbox" id="firstCb"></th>
<th>编号</th>
<th>姓名</th>
<th>性别</th>
<th>年龄</th>
<th>籍贯</th>
<th>QQ</th>
<th>邮箱</th>
<th>操作</th>
</tr>
<c:forEach items="${users}" var="user" varStatus="s">
<tr>
<td><input type="checkbox" name="uid" value="${user.id}"></td>
<td>${s.count}</td>
<td>${user.name}</td>
<td>${user.gender}</td>
<td>${user.age}</td>
<td>${user.address}</td>
<td>${user.qq}</td>
<td>${user.email}</td>
<td><a class="btn btn-default btn-sm" href="${pageContext.request.contextPath}/findUserServlet?id=${user.id}" rel="external nofollow" >修改</a>
<a class="btn btn-default btn-sm" href="javascript:deleteUser(${user.id});" rel="external nofollow" >删除</a></td>
</tr>
</c:forEach>
</table>
</form>
Js
<script>
function deleteUser(id) {
//用户安全提示
if (confirm("您确定要删除吗？")){
//访问的路径
location.href=" ${pageContext.request.contextPath}/delUserServlet?id=" rel="external nofollow" +id;
}
}
window.οnlοad=function () {
//给删除选中按钮添加单击事件
document.getElementById("delSelected").οnclick=function () {
if (confirm("您确定要删除选中条目吗？"))
//表单提交
document.getElementById("form").submit();
}
//1.获取第一个cb
document.getElementById("firstCb").οnclick=function () {
//获取下表所有的cb
var cbs=document.getElementsByName("uid");
//遍历
for (var i=0;i<cbs.length;i++){
//设置这些cbs[i]的checked状态=firstCb.checked
cbs[i].checked =this.checked;
}
}
}
</script>
后台
Servlet
@WebServlet("/delSelectedServlet")
public class DelSelectedServlet extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//获取所有id
String[] ids=request.getParameterValues(“uid”);
//调用service删除
UserService service=new UserServiceImpl();
service.delSelectedUser(ids);
//跳转查询Servlet
response.sendRedirect(request.getContextPath()+"/userListServlet");
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
this.doPost(request, response);
}
}
Service
public void delSelectedUser(String[] ids) {
//遍历数组
for (String id:ids){
//调用dao删除
dao.deleteUser(Integer.parseInt(id));
}
}
Dao
public void updateUser(User user) {
String sql=“update userms set name=?,age=?,gender=?,address=?,qq=?,email=? where id=?”;
template.update(sql,user.getName(),user.getAge(),user.getGender(),user.getAddress(),user.getQq(),user.getEmail(),user.getId());
}
总结
以上所述是小编给大家介绍的java实现选中删除功能的实例代码，希望对大家有所帮助！
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