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js写的评论分页(还不错)_javascript技巧

来源：艾阳教育网
 代码如下:
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%>






微客服



$(function() {
var row = 5;
//动态加评论信息
function loadCommentInfo(page) {
$("#page").text(page);
$.ajax({
type : "POST",
url : "<%=basePath%>findClickCommentByPage.action",
data: "page="+page+"&row="+row,
success : function(data) {
var list = data.list;
var row = "";
$("#comments").empty();
for ( var i = 0; i < list.length; i++) {
row = "

"+list[i].time+"

"+
"

"+list[i].content+"

";
if(list[i].repcontent!=null){
row+="

回复:"+list[i].repcontent+"

";
}
"
";
$(row).appendTo($("#comments"));
}
$("#pagetag").val(page);
}
});
};
function getTotalContent() {
$.ajax({
type : "POST",
url : "<%=basePath%>getTotalNum.action",
success : function(data) {
$("#count").text(data.total);
if(parseInt(data.total)==0){
$("#page").text(0);
}
var pagenum = parseInt(data.total/row);
$("#totalpage").text(parseInt(data.total%row==0?pagenum:pagenum+1));
},
});
}
$("#submit").click(function(){
var content = $("#content").val();
if(content==""){
alert("内容不能为空!");
return;
}
$.post("<%=basePath%>addClickComment.action","content="+content,function(data){
if(data.success == true) {
alert("发表成功!");
$("#content").val("");
loadCommentInfo(parseInt($("#pagetag").val()));
getTotalContent();
}
});
});
$("#pre").click(function(){
var page = parseInt($("#pagetag").val());
if(page>1){
page--;
loadCommentInfo(page);
}
});
$("#next").click(function(){
var page = parseInt($("#pagetag").val());
if(pagepage++;
loadCommentInfo(page);
}
});
window.onload = loadCommentInfo(1);
window.onload = getTotalContent();
});






jsp/index.jsp">



第/页


评论()





发表评论


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dao层
代码如下:
package dfml.daoImpl;

import java.sql.SQLException;
import java.util.List;

import javax.annotation.Resource;

import org.hibernate.Criteria;
import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.criterion.Order;
import org.springframework.orm.hibernate3.HibernateCallback;
import org.springframework.orm.hibernate3.HibernateTemplate;
import org.springframework.stereotype.Component;

import dfml.dao.ClickCommentDao;
import dfml.pojo.ClickComment;

@Component
public class ClickCommentDaoImpl implements ClickCommentDao{

private HibernateTemplate hibernateTemplate;

@Resource
public void setHibernateTemplate(HibernateTemplate hibernateTemplate) {
this.hibernateTemplate = hibernateTemplate;
}
//添加一条评论信息
@Override
public boolean addClickComment(ClickComment clickComment) {
boolean isSuccess = false;
try {
hibernateTemplate.save(clickComment);
isSuccess = true;
} catch (Exception e) {
isSuccess = false;
e.printStackTrace();
}
return isSuccess;
}
//分页查找评论信息
@SuppressWarnings("unchecked")
@Override
public List findClickCommentByPage(final int page, final int row) {
List list = this.hibernateTemplate
.executeFind(new HibernateCallback() {
@Override
public Object doInHibernate(Session session)
throws HibernateException, SQLException {
Criteria c = session.createCriteria(ClickComment.class);
c.setFirstResult((page - 1) * row);
c.setMaxResults(row);
c.addOrder(Order.desc("time"));
return c.list();
}
});
return list;
}
//得到评论的个数
@SuppressWarnings({ "unchecked", "rawtypes" })
@Override
public Long getClickCommentCount() {
final String hql = "select count(*) from ClickComment";
Long result = null;
result = (Long) hibernateTemplate.execute(new HibernateCallback() {
public Object doInHibernate(Session arg0)
throws HibernateException, SQLException {
Query query = arg0.createQuery(hql);
return query.uniqueResult();
}
});
return result;
}
//更新评论信息
@Override
public boolean updateClickComment(ClickComment clickComment) {
boolean isSuccess=false;
try {
hibernateTemplate.update(clickComment);
isSuccess=true;
} catch (Exception e) {
e.printStackTrace();
isSuccess=false;
}
return isSuccess;
}
//根据id查找评论信息
@Override
public ClickComment findClickCommentById(int id) {
return (ClickComment) hibernateTemplate.find("from ClickComment where id = ?",
id).get(0);
}
//删除评论信息
@Override
public boolean deleteClickComment(ClickComment clickComment) {
boolean isSuccess=false;
try {
hibernateTemplate.delete(clickComment);
isSuccess=true;
} catch (Exception e) {
e.printStackTrace();
isSuccess=false;
}
return isSuccess;
}
//查询所有的评论
@SuppressWarnings("unchecked")
@Override
public List findAllClickComment() {
return hibernateTemplate.find("from ClickComment");
}

}

struts配置
代码如下:



map




map




map




map




map




map



action
代码如下:
package dfml.action;

import java.sql.Date;
import java.text.SimpleDateFormat;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.annotation.Resource;

import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;

import com.opensymphony.xwork2.ActionSupport;

import dfml.dao.ClickCommentDao;
import dfml.pojo.Activity;
import dfml.pojo.ClickComment;

@Component("clickCommentAction")
@Scope("prototype")
public class ClickCommentAction extends ActionSupport{

private static final long serialVersionUID = 1L;

private ClickCommentDao clickCommentDao;
private Map map;
private String content;// 评论内容
private String repcontent;// 回复评论
private int page;
private int row;
private int rows;
private int id;
public void setId(int id) {
this.id = id;
}
public Map getMap() {
return map;
}
@Resource
public void setClickCommentDao(ClickCommentDao clickCommentDao) {
this.clickCommentDao = clickCommentDao;
}
public void setContent(String content) {
this.content = content;
}
public void setRepcontent(String repcontent) {
this.repcontent = repcontent;
}
public void setPage(int page) {
this.page = page;
}
public void setRow(int row) {
this.row = row;
}
public void setRows(int rows) {
this.rows = rows;
}
//添加评论 用于微信用户
public String addClickComment() {
boolean isSuccess = false;
map = new HashMap();
ClickComment clickComment = new ClickComment();
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
clickComment.setTime(format.format(new Date(System.currentTimeMillis())));
clickComment.setContent(content);
try {
isSuccess = clickCommentDao.addClickComment(clickComment);
} catch (Exception e) {
isSuccess = false;
e.printStackTrace();
}
map.put("success", isSuccess);
return "add";
}
//分页查找评论 用户微信用户
public String findClickCommentByPage() {
map = new HashMap();
map.put("list", clickCommentDao.findClickCommentByPage(page, row));
return "findByPage";
}
//查询评论条数 用于微信用户
public String getTotalNum(){
map = new HashMap();
map.put("total", clickCommentDao.getClickCommentCount());
return "total";
}
//回复评论 用于后台管理
public String updateClickComment(){
boolean isSuccess=false;
map=new HashMap();
ClickComment clickComment =clickCommentDao.findClickCommentById(id);
if(clickComment!=null){
clickComment.setRepcontent(repcontent);
isSuccess=clickCommentDao.updateClickComment(clickComment);
}
map.put("success", isSuccess);
return "update";
}
//查询所有评论 用于后台管理
public String findAllClickComment(){
map=new HashMap();
List lists=clickCommentDao.findClickCommentByPage(page, rows);
List listss=clickCommentDao.findAllClickComment();
map.put("rows", lists);
map.put("total", listss.size());
map.put("list", listss);
return "list";
}
//删除评论 用于后台管理
public String deleteClickComment(){
boolean isSuccess=false;
map=new HashMap();
ClickComment clickComment =clickCommentDao.findClickCommentById(id);
if(clickComment!=null){
isSuccess=clickCommentDao.deleteClickComment(clickComment);
}
map.put("success", isSuccess);
return "delete";
}


}

pojo
代码如下:
package dfml.pojo;

import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;

//评论表
@Entity
public class ClickComment implements Serializable{


private static final long serialVersionUID = 1L;
private Integer id;
private String time;// 评论时间
private String content;// 评论内容
private String name;// 评论人
private String repcontent;//回复评论

@Id
@GeneratedValue
public Integer getId() {
return id;
}

public void setId(Integer id) {
this.id = id;
}
public String getRepcontent() {
return repcontent;
}
public void setRepcontent(String repcontent) {
this.repcontent = repcontent;
}
public String getTime() {
return time;
}
public void setTime(String time) {
this.time = time;
}
public String getContent() {
return content;
}

public void setContent(String content) {
this.content = content;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}
}

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