SpringMVC+AJAX

最新推荐文章于 2025-04-08 17:38:18 发布

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最新推荐文章于 2025-04-08 17:38:18 发布

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本文详细介绍了如何使用AJAX在JSP页面中实现书签功能，并通过HTTP GET请求与后台进行交互，包括书签的添加、验证和状态更新。重点讨论了如何在前端获取用户交互信息并发送到服务器，以及服务器端如何处理这些请求来维护书签状态。

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AJAX

JSP

1、添加书签： <a href="JavaScript:void(0)" οnclick="bookmark()">添加书签</a>

2、AJAX

3、后台处理

@RequestMapping(value = "/home/book_mark", method = RequestMethod.GET)
public ModelAndView book_mark(HttpServletRequest request,
HttpServletResponse response, ModelMap modelMap) throws Exception {
String flag = "success";
try {
VUser user = (VUser) request.getSession().getAttribute("User");
String bookSN = request.getParameter("bookSN");
String line = request.getParameter("line");
String id = request.getParameter("id");

Sbook book = savebook.fetchbookBySN(savechartbook.fetchChartById(
Integer.parseInt(request.getParameter("id").toString()))
.getBookSN(), String.valueOf(user.getUserLevel()));
BookSheet sheet = new BookSheet();
sheet.setBookId(book.getBookId());
sheet.setU_OId(user.getU_OId());
sheet.setReadState("0");
sheet.setChartId(Integer.parseInt(request.getParameter("id")
.toString()));
SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMddhhmmss");
Date curDate = new Date(System.currentTimeMillis());//
String str = formatter.format(curDate);
sheet.setLastDate(str);
sheet.setMarkPosition("0");
// 如果书签存在，覆盖以前的书签
if (booksheet.fetchBookSheetByConditionAndId(user.getU_OId(), "0",
book.getBookId()).size() > 0) {
sheet.setUserBookId(booksheet.fetchBookSheetByConditionAndId(
user.getU_OId(), "0", book.getBookId()).get(0)
.getUserBookId());
booksheet.modifyBoookSheet(sheet);
} else if (booksheet.fetchBookSheetByConditionAndId(
user.getU_OId(), "1", book.getBookId()).size() > 0) { // 如果书签停用，激活书签
sheet.setUserBookId(booksheet.fetchBookSheetByConditionAndId(
user.getU_OId(), "1", book.getBookId()).get(0)
.getUserBookId());
sheet.setReadState("0");
booksheet.modifyBoookSheet(sheet);
} else {// 如果书签不重在，直接添加书签
booksheet.saveBookSheet(sheet);
}
} catch (Exception e) {

flag = "false";
e.printStackTrace();
}
modelMap.put("flag", flag);
return new ModelAndView("/home/bookmark", modelMap);
}