最近要实现一个功能，就是checkbox跨页多选，在网上看了一下，资料很少，而且大多是不完全的。不过经过我的努力，终于做出来了。
JSP页面:
1,定义三个Hidden变量:
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<INPUT type="hidden" name="all_selected"> <INPUT type="hidden" name="now_selected"> <INPUT type="hidden" name="no_selected"> |
2,javascript
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// 获取checkbox信息,选中,未选中,当前选中 function getCheckBoxInformation() { var checkboxes = document.getElementsByName("checkbox"); var checkedStr = ""; var uncheckedStr = ""; var url = ""; for(var i = 0; i < checkboxes.length; i++) { var checkbox = checkboxes[i]; if(checkbox.checked) { checkedStr = checkedStr + "," + checkbox.value; }else { uncheckedStr = uncheckedStr + "," + checkbox.value; } } document.form1.now_selected.value = checkedStr; document.form1.no_selected.value = uncheckedStr; } // 页面onload的时候计算当前页被选中项,并在页面表示 function initPage() { var all_selected = document.form1.all_selected.value; if(all_selected != "" && all_selected!= null) { var arrall_select = all_selected.split(","); if(arrall_select.length > 0) { for(var k = 0; k < arrall_select.length; k++) { for(var i = 0; i < document.form1.checkbox.length; i++) { if(document.form1.checkbox[i].value == arrall_select[k]) { document.form1.checkbox[i].checked = true; } } } } } } |
每次翻页的时候调用getCheckBoxInformation()方法,页面加载的时候调用initPage()方法.
在后台，每次翻页时调用方法
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public String doubleSpread(String all_select, String now_selected, String no_selected) { //获取当前选中的项目加入al List al = new ArrayList(); if(all_select != "" && all_select != null) { String[] all_select_str = all_select.split(","); for(int a=0;a<all_select_str.length;a++) { al.add(all_select_str[a]); } } //将当前选中项目加入列表 if (now_selected != "" && now_selected != null) { String[] all_now_select = now_selected.split(","); for (int i = 1; i < all_now_select.length; i++) { if (!al.contains(all_now_select[i])) { al.add(all_now_select[i]); } } } //将当前未选中项目从列表中删除 if (no_selected != "" && no_selected != null) { String[] all_now_no_select = no_selected.split(","); for (int i = 1; i < all_now_no_select.length; i++) { if (al.contains(all_now_no_select[i])) { al.remove(all_now_no_select[i]); } } } all_select=al.toString().replaceAll(" +","");; all_select=all_select.substring(1,all_select.length()-1)+","; return all_select; } |
将此方法返回的all_select再传到JSP页面上并赋值给那个隐藏域,到此，功能就实现了。
以上所述是小编给大家介绍的Java中checkbox实现跨页多选的方法，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持！
原文链接：http://blog.csdn.net/shiyu_sy/article/details/54616919
