}
});
};
四、后台部分(java)我用的是MVC 3层模型
servlet部分: (可以跳过)
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=utf-8");
PrintWriter out = response.getWriter();
//获取分页参数
String p=request.getParameter("page"); //当前第几页(点击获取)
int page=Integer.parseInt(p);
String row=request.getParameter("rows"); //每页显示多少条记录
int rows=Integer.parseInt(row);
String s=request.getParameter("Cat"); //栏目ID
int indexId=Integer.parseInt(s);
JSONObject object=(new ContentService()).getContentPaiXuById(indexId, page, rows);
out.print(object);
out.flush();
out.close();
}
Service部分:(可以跳过)
public JSONObject getContentPaiXuById(int indexId, int page, int rows) {
JSONArray array=new JSONArray();
Listcontentlist1=(new ContentDao()).selectIndexById(indexId);
Listcontentlist=paginationContent(contentlist1,page,rows);
for(Content content:contentlist){
JSONObject object=new JSONObject();
object.put("contentId", content.getContentId());
object.put("caption", content.getCaption());
object.put("createDate", content.getCreateDate());
object.put("times", String.valueOf(content.getTimes()));
object.put("source", content.getSource());
object.put("text", content.getText());
object.put("pic", content.getPic());
object.put("refPic", content.getRefPic());
object.put("hot", content.getHot());
object.put("userId", content.getAuthorId().getUserId());
int id = content.getAuthorId().getUserId();
String ShowName = (new UserService()).selectUserById(id).getString("ShowName");
object.put("showName", ShowName);
array.add(object);
}
JSONObject obj=new JSONObject();
obj.put("total", contentlist1.size());
obj.put("rows", array);
return obj;
}
获取出每页的的起止id(这部分是重点),同样写在Service中,比如说假设一页有6条内容,那么第一页的id是从1到6,第二页的id是从7到12,以此类推
//获取出每页的内容 从哪个ID开始到哪个ID结束。
private List paginationContent(List list,int page,int rows){
Listsmall=new ArrayList();
int beginIndex=rows*page; //rows是每页显示的内容数,page就是我前面强调多次的点击的分页的页数的索引值,第一页为0,这样子下面就好理解了!
System.out.println(beginIndex);
int endIndex;
if(rows*(page+1)>list.size()){
endIndex=list.size();
}
else{
endIndex=rows*(page+1);
}
for(int i=beginIndex;i
small.add(list.get(i));
}
return small;
}
Dao层: (可以跳过)
public List selectIndexById(int indexId){
Listlist=new ArrayList();
try{
conn = DBConn.getCon();
String sql = "select * from T_Content,T_User where T_Content.AuthorId = T_User.UserId and CatlogId=? order by CreateDate desc";
pstm = conn.prepareStatement(sql);
pstm.setInt(1, indexId);
rs = pstm.executeQuery();
SimpleDateFormat ff=new SimpleDateFormat("yyyy年MM月dd日 hh时mm分");
while(rs.next()){
Content content = new Content();
content.setContentId(rs.getInt("ContentId"));
content.setCaption(rs.getString("Caption"));
content.setCreateDate(f.format(rs.getTimestamp("CreateDate")));
content.setTimes(rs.getInt("Times"));
content.setSource(rs.getString("Source"));
content.setText(rs.getString("Text"));
content.setPic(rs.getString("Pic"));
content.setRefPic(rs.getString("RefPic"));
content.setHot(rs.getInt("Hot"));
User user = new User();
user.setUserId(rs.getInt("UserId"));
content.setAuthorId(user);
Catlog catlog = new Catlog(); //CntURL待开发
catlog.setCatlogId(rs.getInt("CatlogId"));
content.setCatlog(catlog);
list.add(content);
}
}catch(Exception e){
e.printStackTrace();
}finally{
DBConn.closeDB(conn, pstm, rs);
}
return list;
}
以上就是网页所实现的分页代码,easy-ui部分的分页也可以参考以上代码。