struts2+spring+hibernate分页

2EE系统中分页显示，修改dao层，service层，action层，两个分页类文件，代码如下：


dao层接口：
Java代码

1. package com.last999.im.news.dao;
2. import java.util.*;
3. import com.last999.im.news.entity.KindEntity;
4. import com.last999.im.news.web.PageTool;
5. public interface KindEntityDao{
6. public KindEntity get(String uuid);
7. public void save(KindEntity kindEntity);
8. public void update(KindEntity kindEntity);
9. public void delete(String uuid);
10. public void delete(KindEntity kindEntity);
11. public List<KindEntity> findAll();
12. public KindEntity findKindEntityByName(String name);
13. public List<KindEntity> getKindEntity(PageTool pageInfo);
14. public int getRows();
15. }

package com.last999.im.news.dao;
import java.util.*;
import com.last999.im.news.entity.KindEntity;
import com.last999.im.news.web.PageTool;
public interface KindEntityDao{
public KindEntity get(String uuid);
public void save(KindEntity kindEntity);
public void update(KindEntity kindEntity);
public void delete(String uuid);
public void delete(KindEntity kindEntity);
public List<KindEntity> findAll();
public KindEntity findKindEntityByName(String name);
public List<KindEntity> getKindEntity(PageTool pageInfo);
public int getRows();
}


实现类：
Java代码

1. package com.last999.im.news.dao.impl;
2. import java.util.*;
3. import com.last999.im.news.dao.KindEntityDao;
4. import com.last999.im.news.entity.KindEntity;
5. import com.last999.im.news.web.PageTool;
6. import org.hibernate.Query;
7. import org.hibernate.Session;
8. import org.hibernate.HibernateException;
9. import org.springframework.orm.hibernate3.HibernateCallback;
10. import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
11. public class KindEntityDaoHibernate extends HibernateDaoSupport implements KindEntityDao{
12. public KindEntity get(String uuid){
13. return (KindEntity)getHibernateTemplate().get(KindEntity.class,uuid);
14. }
15. public void save(KindEntity kindEntity){
16. getHibernateTemplate().save(kindEntity);
17. }
18. public void update(KindEntity kindEntity){
19. getHibernateTemplate().saveOrUpdate(kindEntity);
20. }
21. public void delete(KindEntity kindEntity){
22. getHibernateTemplate().delete(kindEntity);
23. }
24. public void delete(String uuid){
25. getHibernateTemplate().delete((KindEntity)getHibernateTemplate().get(KindEntity.class,uuid));
26. }
27. public List findAll(){
28. return getHibernateTemplate().find("from KindEntity");
29. }
30. public KindEntity findKindEntityByName(String name){
31. List k1 = getHibernateTemplate().find("from KindEntity as ke where ke.name = ?",name);
32. if (k1 != null && k1.size() == 1){
33. return (KindEntity)k1.get(0);
34. }
35. return null;
36. }
37. public int getRows(){
38. return getHibernateTemplate().find("from KindEntity").size();
39. }
40. public List getKindEntity(PageTool pageInfo){
41. final int size1=pageInfo.getSize();
42. final int startRow=(pageInfo.getCur()-1)*pageInfo.getSize();
43. return this.getHibernateTemplate().executeFind(new HibernateCallback(){
44. public List doInHibernate(Session session) throws HibernateException{
45. Query query = session.createQuery("from KindEntity");
46. query.setFirstResult(startRow);
47. query.setMaxResults(size1);
48. return query.list();
49. }
50. }
51. );
52. }
53. }

package com.last999.im.news.dao.impl;
import java.util.*;
import com.last999.im.news.dao.KindEntityDao;
import com.last999.im.news.entity.KindEntity;
import com.last999.im.news.web.PageTool;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.HibernateException;
import org.springframework.orm.hibernate3.HibernateCallback;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
public class KindEntityDaoHibernate extends HibernateDaoSupport implements KindEntityDao{
public KindEntity get(String uuid){
return (KindEntity)getHibernateTemplate().get(KindEntity.class,uuid);
}
public void save(KindEntity kindEntity){
getHibernateTemplate().save(kindEntity);
}
public void update(KindEntity kindEntity){
getHibernateTemplate().saveOrUpdate(kindEntity);
}
public void delete(KindEntity kindEntity){
getHibernateTemplate().delete(kindEntity);
}
public void delete(String uuid){
getHibernateTemplate().delete((KindEntity)getHibernateTemplate().get(KindEntity.class,uuid));
}
public List findAll(){
return getHibernateTemplate().find("from KindEntity");
}
public KindEntity findKindEntityByName(String name){
List k1 = getHibernateTemplate().find("from KindEntity as ke where ke.name = ?",name);
if (k1 != null && k1.size() == 1){
return (KindEntity)k1.get(0);
}
return null;
}
public int getRows(){
return getHibernateTemplate().find("from KindEntity").size();
}
public List getKindEntity(PageTool pageInfo){
final int size1=pageInfo.getSize();
final int startRow=(pageInfo.getCur()-1)*pageInfo.getSize();
return this.getHibernateTemplate().executeFind(new HibernateCallback(){
public List doInHibernate(Session session) throws HibernateException{
Query query = session.createQuery("from KindEntity");
query.setFirstResult(startRow);
query.setMaxResults(size1);
return query.list();
}
}
);
}
}


SERVICE层接口：
Java代码

1. package com.last999.im.news.service;
2. import java.util.List;
3. import com.last999.im.news.web.PageTool;
4. import com.last999.im.news.entity.KindEntity;
5. public interface KindEntityManage{
6. public void addKindEntity(KindEntity entity);
7. public List findAllKind();
8. public int getRows();
9. public List getKindEntity(PageTool pageInfo);
10. }

package com.last999.im.news.service;
import java.util.List;
import com.last999.im.news.web.PageTool;
import com.last999.im.news.entity.KindEntity;
public interface KindEntityManage{
public void addKindEntity(KindEntity entity);
public List findAllKind();
public int getRows();
public List getKindEntity(PageTool pageInfo);
}


实现类：
Java代码

1. package com.last999.im.news.service.impl;
2. import java.util.List;
3. import com.last999.im.news.web.PageTool;
4. import com.last999.im.news.entity.KindEntity;
5. import com.last999.im.news.service.KindEntityManage;
6. import com.last999.im.news.dao.KindEntityDao;
7. public class KindEntityManageImpl implements KindEntityManage{
8. private KindEntityDao kindEntityDao;
9. public KindEntityDao getKindEntityDao(){
10. return this.kindEntityDao;
11. }
12. public void setKindEntityDao(KindEntityDao kindEntityDao) {
13. this.kindEntityDao=kindEntityDao;
14. }
15. public void addKindEntity(KindEntity kindEntity){
16. this.getKindEntityDao().save(kindEntity);
17. }
18. public List findAllKind(){
19. return this.getKindEntityDao().findAll();
20. }
21. public int getRows(){
22. return this.getKindEntityDao().getRows();
23. }
24. public List getKindEntity(PageTool pageInfo){
25. return this.getKindEntityDao().getKindEntity(pageInfo);
26. }
27. }

package com.last999.im.news.service.impl;
import java.util.List;
import com.last999.im.news.web.PageTool;
import com.last999.im.news.entity.KindEntity;
import com.last999.im.news.service.KindEntityManage;
import com.last999.im.news.dao.KindEntityDao;
public class KindEntityManageImpl implements KindEntityManage{
private KindEntityDao kindEntityDao;
public KindEntityDao getKindEntityDao(){
return this.kindEntityDao;
}
public void setKindEntityDao(KindEntityDao kindEntityDao) {
this.kindEntityDao=kindEntityDao;
}
public void addKindEntity(KindEntity kindEntity){
this.getKindEntityDao().save(kindEntity);
}
public List findAllKind(){
return this.getKindEntityDao().findAll();
}
public int getRows(){
return this.getKindEntityDao().getRows();
}
public List getKindEntity(PageTool pageInfo){
return this.getKindEntityDao().getKindEntity(pageInfo);
}
}


action类：
Java代码

1. package com.last999.im.news.action;
2. import java.util.List;
3. import com.last999.im.news.web.PageTool;
4. import com.last999.im.news.web.PageMaker;
5. import com.last999.im.news.entity.KindEntity;
6. import com.last999.im.news.service.KindEntityManage;
7. public class KindViewAction extends SafeStruts2{
8. private List kindList;
9. private KindEntity kindEntity;
10. private KindEntityManage kindEntityManage;
11. private int ppp;
12. private PageMaker pageMaker;
13. private String pager;
14. public String getPager(){
15. return this.pager;
16. }
17. public void setPager(String pager) {
18. this.pager=pager;
19. }
20. public PageMaker getPageMaker(){
21. return this.pageMaker;
22. }
23. public void setPageMaker(PageMaker pageMaker) {
24. this.pageMaker=pageMaker;
25. }
26. public int getPpp(){
27. return this.ppp;
28. }
29. public void setPpp(int ppp) {
30. this.ppp=ppp;
31. }
32. public KindEntityManage getKindEntityManage(){
33. return this.kindEntityManage;
34. }
35. public void setKindEntityManage(KindEntityManage kindEntityManage) {
36. this.kindEntityManage=kindEntityManage;
37. }
38. public KindEntity getKindEntity(){
39. return this.kindEntity;
40. }
41. public void setKindEntity(KindEntity kindEntity) {
42. this.kindEntity=kindEntity;
43. }
44. public List getKindList(){
45. return this.kindList;
46. }
47. public void setKindList(List kindList) {
48. this.kindList=kindList;
49. }
50. public String kindView(){
51. PageTool pageInfo = new PageTool();
52. pageInfo.setCur(this.getPpp());
53. pageInfo.setTotal(this.getKindEntityManage().getRows());
54. setKindList(this.getKindEntityManage().getKindEntity(pageInfo));
55. PageMaker pageMaker = new PageMaker();
56. setPager(pageMaker.makeList(pageInfo,"kindView.action?ppp="));
57. return SUCCESS;
58. }
59. }

package com.last999.im.news.action;
import java.util.List;
import com.last999.im.news.web.PageTool;
import com.last999.im.news.web.PageMaker;
import com.last999.im.news.entity.KindEntity;
import com.last999.im.news.service.KindEntityManage;
public class KindViewAction extends SafeStruts2{
private List kindList;
private KindEntity kindEntity;
private KindEntityManage kindEntityManage;
private int ppp;
private PageMaker pageMaker;
private String pager;
public String getPager(){
return this.pager;
}
public void setPager(String pager) {
this.pager=pager;
}
public PageMaker getPageMaker(){
return this.pageMaker;
}
public void setPageMaker(PageMaker pageMaker) {
this.pageMaker=pageMaker;
}
public int getPpp(){
return this.ppp;
}
public void setPpp(int ppp) {
this.ppp=ppp;
}
public KindEntityManage getKindEntityManage(){
return this.kindEntityManage;
}
public void setKindEntityManage(KindEntityManage kindEntityManage) {
this.kindEntityManage=kindEntityManage;
}
public KindEntity getKindEntity(){
return this.kindEntity;
}
public void setKindEntity(KindEntity kindEntity) {
this.kindEntity=kindEntity;
}
public List getKindList(){
return this.kindList;
}
public void setKindList(List kindList) {
this.kindList=kindList;
}
public String kindView(){
PageTool pageInfo = new PageTool();
pageInfo.setCur(this.getPpp());
pageInfo.setTotal(this.getKindEntityManage().getRows());
setKindList(this.getKindEntityManage().getKindEntity(pageInfo));
PageMaker pageMaker = new PageMaker();
setPager(pageMaker.makeList(pageInfo,"kindView.action?ppp="));
return SUCCESS;
}
}


分页辅助工具类：
Java代码

1. package com.last999.im.news.web;
2.
3. public class PageTool{
4.
5. private int cur=1;
6. private int size=6;
7. private int total=1;
8.
9. public int getCur(){
10. return this.cur;
11. }
12. public void setCur(int cur) {
13. this.cur=cur;
14. }
15. public int getSize(){
16. return this.size;
17. }
18. public void setSize(int size) {
19. this.size=size;
20. }
21. public int getTotal(){
22. return this.total;
23. }
24. public void setTotal(int total) {
25. this.total=total;
26. }
27.
28. public PageTool(){}
29.
30. public PageTool(int cur,int size,int total){
31. this.cur=cur;
32. this.size=size;
33. this.total=total;
34. }
35.
36. public PageTool(int size){
37. this.size=size;
38. this.cur=1;
39. this.total=1;
40. }
41. }

package com.last999.im.news.web;

public class PageTool{

private int cur=1;
private int size=6;
private int total=1;

public int getCur(){
return this.cur;
}
public void setCur(int cur) {
this.cur=cur;
}
public int getSize(){
return this.size;
}
public void setSize(int size) {
this.size=size;
}
public int getTotal(){
return this.total;
}
public void setTotal(int total) {
this.total=total;
}

public PageTool(){}

public PageTool(int cur,int size,int total){
this.cur=cur;
this.size=size;
this.total=total;
}

public PageTool(int size){
this.size=size;
this.cur=1;
this.total=1;
}
}


PageMaker.java

Java代码

1. package com.last999.im.news.web;
2.
3.
4. import com.last999.im.news.web.PageTool;
5.
6. public class PageMaker {
7. public PageMaker(){}
8. public String makeList(PageTool pageinfo,String url){
9. int linkNumber=10;
10. int halfLinkNumber=5;
11. String pageStyle="<style> .ptbl {border:1px solid #CEDBEF;font-size:12px;padding:0;font-family:Arial;width:auto} .ptbl a {text-decoration:none;color:#555555} .ptbl td {padding-top:0px;padding-bottom:0px;padding-left:4px;padding-right:4px} .strong {background:#CEDBEF;font-weight:800;color:#FF7D00} .strong a{color:#FF7D00} .page_input {background:#ffffff;border:1px solid #CEDBEF;border-top:none;border-bottom:none;color:#FF7D00;width:30px;margin:0px } </style>";
12. String pageTable="<table border='0'cellpadding='0' cellspacing='0' bgcolor='#CEDBEF' class='ptbl'><tr align='center' bgcolor='#FFFBFF'>";
13. //a string that will be decretion to show
14. StringBuffer pagelist=new StringBuffer("");
15. //get current page.
16. int curpage=pageinfo.getCur();
17. int pagenumber=pageinfo.getTotal()/pageinfo.getSize()+1;
18. //make it's pre,next page
19. int prepage=curpage-1;
20. prepage=prepage<=0?1:prepage;
21. int nextpage=curpage+1;
22. nextpage=nextpage>=pagenumber?pagenumber:nextpage;
23. //finger out how many page total
24. pagelist.append(pageStyle);
25. pagelist.append(pageTable);
26. pagelist.append("<td>Record:<font color='red'>"+pageinfo.getTotal()+"</font></td>");
27. //frist page
28. //pagelist.append("<td><a href='"+url+"1'>|<</a></td>");
29. //pagelist.append("<td><a href='"+url+prepage+"'><</a></td>");
30. if (pagenumber<=linkNumber){
31. for(int i=1;i<=pagenumber;i++){
32. if(i==curpage)
33. pagelist.append("<td class='strong'>"+i+"</td>");
34. else
35. pagelist.append("<td><a href='"+url+i+"'>"+i+"</a></td>");
36. }
37. }else{
38. int begin=curpage-halfLinkNumber;
39. begin=(begin<=0)?1:begin;
40. begin=((halfLinkNumber+curpage)>pagenumber) ? (pagenumber-linkNumber+1):begin;
41. for(int i=begin;i<=linkNumber+begin-1;i++){
42. if(i==curpage){
43. pagelist.append("<td class='strong'>"+i+"</td>");
44. pagelist.append("\n");
45. }
46. else{
47. pagelist.append("<td><a href='<s:url action='"+url+"'><s:param name='ppp' value='"+i+"'/></s:url>'>"+i+"</a></td>");
48. pagelist.append("\n");
49. }
50. }
51. }
52. //pagelist.append("<td><a href='"+url+nextpage+"'>></a></td>");
53. //pagelist.append("<td><a href='"+url+pagenumber+"'>>|</a></td>");
54. pagelist.append("<td>Page:<font color='red'>"+pagenumber+"</font></td></tr></table>");
55. return pagelist.toString();
56. }
57. }

package com.last999.im.news.web;


import com.last999.im.news.web.PageTool;

public class PageMaker {
public PageMaker(){}
public String makeList(PageTool pageinfo,String url){
int linkNumber=10;
int halfLinkNumber=5;
String pageStyle="<style> .ptbl {border:1px solid #CEDBEF;font-size:12px;padding:0;font-family:Arial;width:auto} .ptbl a {text-decoration:none;color:#555555} .ptbl td {padding-top:0px;padding-bottom:0px;padding-left:4px;padding-right:4px} .strong {background:#CEDBEF;font-weight:800;color:#FF7D00} .strong a{color:#FF7D00} .page_input {background:#ffffff;border:1px solid #CEDBEF;border-top:none;border-bottom:none;color:#FF7D00;width:30px;margin:0px } </style>";
String pageTable="<table border='0'cellpadding='0' cellspacing='0' bgcolor='#CEDBEF' class='ptbl'><tr align='center' bgcolor='#FFFBFF'>";
//a string that will be decretion to show
StringBuffer pagelist=new StringBuffer("");
//get current page.
int curpage=pageinfo.getCur();
int pagenumber=pageinfo.getTotal()/pageinfo.getSize()+1;
//make it's pre,next page
int prepage=curpage-1;
prepage=prepage<=0?1:prepage;
int nextpage=curpage+1;
nextpage=nextpage>=pagenumber?pagenumber:nextpage;
//finger out how many page total
pagelist.append(pageStyle);
pagelist.append(pageTable);
pagelist.append("<td>Record:<font color='red'>"+pageinfo.getTotal()+"</font></td>");
//frist page
//pagelist.append("<td><a href='"+url+"1'>|<</a></td>");
//pagelist.append("<td><a href='"+url+prepage+"'><</a></td>");
if (pagenumber<=linkNumber){
for(int i=1;i<=pagenumber;i++){
if(i==curpage)
pagelist.append("<td class='strong'>"+i+"</td>");
else
pagelist.append("<td><a href='"+url+i+"'>"+i+"</a></td>");
}
}else{
int begin=curpage-halfLinkNumber;
begin=(begin<=0)?1:begin;
begin=((halfLinkNumber+curpage)>pagenumber) ? (pagenumber-linkNumber+1):begin;
for(int i=begin;i<=linkNumber+begin-1;i++){
if(i==curpage){
pagelist.append("<td class='strong'>"+i+"</td>");
pagelist.append("\n");
}
else{
pagelist.append("<td><a href='<s:url action='"+url+"'><s:param name='ppp' value='"+i+"'/></s:url>'>"+i+"</a></td>");
pagelist.append("\n");
}
}
}
//pagelist.append("<td><a href='"+url+nextpage+"'>></a></td>");
//pagelist.append("<td><a href='"+url+pagenumber+"'>>|</a></td>");
pagelist.append("<td>Page:<font color='red'>"+pagenumber+"</font></td></tr></table>");
return pagelist.toString();
}
}


KindEntity.java


Java代码

1. package com.last999.im.news.entity;
2. /**
3. * @hibernate.class
4. * table="kind"
5. * dynamic-update="true"
6. */
7. public class KindEntity extends Persistent{
8. private String title;
9. private String content;
10. private String parentId;
11. private String description;
12. /**
13. * @hibernate.property
14. */
15. public String getDescription(){
16. return this.description;
17. }
18. public void setDescription(String description) {
19. this.description=description;
20. }
21. private String em1;
22. private String em2;
23. private String em3;
24. /**
25. * @hibernate.property
26. */
27. public String getEm3(){
28. return this.em3;
29. }
30. public void setEm3(String em3) {
31. this.em3=em3;
32. }
33. /**
34. * @hibernate.property
35. */
36. public String getEm2(){
37. return this.em2;
38. }
39. public void setEm2(String em2) {
40. this.em2=em2;
41. }
42. /**
43. * @hibernate.property
44. */
45. public String getEm1(){
46. return this.em1;
47. }
48. public void setEm1(String em1) {
49. this.em1=em1;
50. }
51. /**
52. * @hibernate.property
53. */
54. public String getParentId(){
55. return this.parentId;
56. }
57. public void setParentId(String parentId) {
58. this.parentId=parentId;
59. }
60. /**
61. * @hibernate.property
62. * @hibernate.column name="content" sql-type="TEXT"
63. */
64. public String getContent(){
65. return this.content;
66. }
67. public void setContent(String content) {
68. this.content=content;
69. }
70. /**
71. * @hibernate.property
72. */
73. public String getTitle(){
74. return this.title;
75. }
76. public void setTitle(String title) {
77. this.title=title;
78. }
79. }

package com.last999.im.news.entity;
/**
* @hibernate.class
* table="kind"
* dynamic-update="true"
*/
public class KindEntity extends Persistent{
private String title;
private String content;
private String parentId;
private String description;
/**
* @hibernate.property
*/
public String getDescription(){
return this.description;
}
public void setDescription(String description) {
this.description=description;
}
private String em1;
private String em2;
private String em3;
/**
* @hibernate.property
*/
public String getEm3(){
return this.em3;
}
public void setEm3(String em3) {
this.em3=em3;
}
/**
* @hibernate.property
*/
public String getEm2(){
return this.em2;
}
public void setEm2(String em2) {
this.em2=em2;
}
/**
* @hibernate.property
*/
public String getEm1(){
return this.em1;
}
public void setEm1(String em1) {
this.em1=em1;
}
/**
* @hibernate.property
*/
public String getParentId(){
return this.parentId;
}
public void setParentId(String parentId) {
this.parentId=parentId;
}
/**
* @hibernate.property
* @hibernate.column name="content" sql-type="TEXT"
*/
public String getContent(){
return this.content;
}
public void setContent(String content) {
this.content=content;
}
/**
* @hibernate.property
*/
public String getTitle(){
return this.title;
}
public void setTitle(String title) {
this.title=title;
}
}


为什么没有在页面接收的代码:


Html代码

1. <%@ page contentType="text/html;charset=utf-8" language="java" %>
2. <%@ taglib prefix="s" uri="/struts-tags"%>
3. <html>
4. <head>
5. <title>
6. showkind
7. </title>
8. </head>
9. <html>
10. <body>
11. <center>
12. <table border="1">
13. <tr>
14. <td>
15. <table border="0" width="755" bgcolor="#eeeeee">
16. <tr>
17. <font size="3">
18. <b>
19. These are all the kinds:
20. </b>
21. </font>
22. </tr>
23. <tr>
24. <td width="%25">title</td>
25. <td width="%25">description</td>
26. <td width="%25">parentId</td>
27. <td width="25%">Content</td>
28. </tr>
29. <s:iterator value="%{kindList}" id="kind">
30. <tr>
31. <td>
32. <s:property value="#kind.title"/>
33. </td>
34. <td>
35. <s:property value="#kind.description"/>
36. </td>
37. <td>
38. <s:property value="#kind.parentId"/>
39. </td>
40. <td>
41. <s:property value="#kind.content"/>
42. </td>
43. <!--
44. <td>
45. <a href="<s:url action='kindDelete'><s:param name='uuid' value='#kind.uuid'/></s:url>">Delete</a>
46. </td>
47. -->
48. </s:iterator>
49. </tr>
50. </table>
51. </td>
52. </tr>
53. </table>
54. <s:property value="pager" escape="false"/>
55. </center>
56. </body>
57. </html>