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1.pagination.tld
 1 <? xml version="1.0" encoding="UTF-8" ?>      
  2 <! DOCTYPE taglib PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.2//EN" "http://java.sun.com/dtd/web-jsptaglibrary_1_2.dtd" >      
  3 < taglib >   
  4      < tlib-version > 2.2.3 </ tlib-version >      
  5      < jsp-version > 1.2 </ jsp-version >      
  6      < short-name > tangs </ short-name >      
  7      < uri > /tangs </ uri >  
  8      < description > author xiongwei </ description >    
  9      < display-name > "Tangs Tags" </ display-name >      
 10           
 11          < tag >      
 12              < name > pages </ name >      
 13              < tag-class > cn.com.sunrise.home.util.PageTag </ tag-class >       
 14              < body-content > empty </ body-content >      
 15              < attribute >       
 16                  < name > pageNo </ name >      
 17                  < required > true </ required >      
 18                  < rtexprvalue > true </ rtexprvalue >      
 19              </ attribute >      
 20              < attribute >      
 21                  < name > total </ name >      
 22                  < required > true </ required >      
 23                  < rtexprvalue > true </ rtexprvalue >      
 24              </ attribute >     
 25              < attribute >      
 26                  < name > permeterName </ name >      
 27                  < required > false </ required >      
 28                  < rtexprvalue > true </ rtexprvalue >      
 29              </ attribute >     
 30              < attribute >      
 31                  < name > includes </ name >      
 32                  < required > false </ required >      
 33                  < rtexprvalue > true </ rtexprvalue >      
 34              </ attribute >    
 35              < attribute >      
 36                  < name > styleClass </ name >      
 37                  < required > false </ required >      
 38                  < rtexprvalue > true </ rtexprvalue >      
 39              </ attribute >      
 40              < attribute >      
 41                  < name > theme </ name >      
 42                  < required > false </ required >      
 43                  < rtexprvalue > true </ rtexprvalue >      
 44              </ attribute >     
 45          </ tag >      
 46 </ taglib >     
 47

2.Pages.java
  1package cn.com.sunrise.home.util;   
  2  
  3import java.io.IOException;   
  4import java.io.Writer;   
  5import java.util.Map;   
  6import java.util.logging.Level;   
  7import java.util.logging.Logger;   
  8  
  9import javax.servlet.http.HttpServletRequest;   
 10  
 11import org.apache.struts2.StrutsStatics;   
 12import org.apache.struts2.components.Component;   
 13import org.apache.struts2.dispatcher.StrutsRequestWrapper;   
 14  
 15import com.opensymphony.xwork2.util.ValueStack;   
 16  
 17/**  
 18 * 分页逻辑Bean  
 19 * @author xiongwei
 20 */  
 21public class Pages extends Component {   
 22       
 23    private HttpServletRequest request;   
 24       
 25    private String pageNo;   
 26    private String total;   
 27    private String styleClass;   
 28    private String theme;   
 29    private String includes;   
 30       
 31    public String getTheme() {   
 32        return theme;   
 33    }   
 34    public void setTheme(String theme) {   
 35        this.theme = theme;   
 36    }       
 37    public String getIncludes() {   
 38        return includes;   
 39    }   
 40    public void setIncludes(String includes) {   
 41        this.includes = includes;   
 42    }   
 43    public String getStyleClass() {   
 44        return styleClass;   
 45    }   
 46    public void setStyleClass(String styleClass) {   
 47        this.styleClass = styleClass;   
 48    }       
 49    public String getPageNo() {   
 50        return pageNo;   
 51    }   
 52    public void setPageNo(String pageNo) {   
 53        this.pageNo = pageNo;   
 54    }   
 55    public String getTotal() {   
 56        return total;   
 57    }   
 58    public void setTotal(String total) {   
 59        this.total = total;   
 60    }   
 61       
 62       
 63    public Pages(ValueStack arg0, HttpServletRequest request) {   
 64        super(arg0);   
 65        this.request = request;   
 66    }   
 67  
 68    @Override  
 69    public boolean start(Writer writer) {   
 70           
 71        boolean result = super.start(writer);   
 72        try {   
 73            StringBuilder str = new StringBuilder();   
 74            Map cont=this.getStack().getContext();   
 75            StrutsRequestWrapper req=(StrutsRequestWrapper)cont.get(StrutsStatics.HTTP_REQUEST);   
 76               
 77            String url=(String)req.getAttribute("javax.servlet.forward.request_uri");   
 78                          
 79            //从ValueStack中取出数值   
 80            Object obj=this.getStack().findValue(pageNo);               
 81            pageNo = String.valueOf((Integer)obj);     
 82            obj=this.getStack().findValue(total);   
 83            total = String.valueOf((Integer)obj);     
 84               
 85            StringBuffer perUrl=new StringBuffer("");   
 86            if(includes!=null){   
 87                String[] perm=includes.split(",");   
 88                for(int i=0;i<perm.length;i++){   
 89                    String permName=perm[i];   
 90                    Object obje=this.getStack().findValue(permName);   
 91                     String vType=obje.getClass().toString();   
 92                       
 93                    vType=vType.substring(vType.lastIndexOf(".")+1,vType.length());                        
 94                    perUrl.append("&"+permName);   
 95                    if(vType.equals("String")){   
 96                        String tmp= (String)this.getStack().findValue(permName);   
 97                        perUrl.append("="+tmp);   
 98                    }else if(vType.equals("Long")){   
 99                        Long tmp= (Long)this.getStack().findValue(permName);   
100                        perUrl.append("="+tmp);   
101                    }else if(vType.equals("Float")){   
102                        Float tmp= (Float)this.getStack().findValue(permName);   
103                        perUrl.append("="+tmp);   
104                    }else if(vType.equals("Integer")){   
105                        Integer tmp= (Integer)this.getStack().findValue(permName);   
106                        perUrl.append("="+tmp);   
107                    }else if(vType.equals("Boolean")){   
108                        Boolean tmp= (Boolean)this.getStack().findValue(permName);   
109                        perUrl.append("="+tmp);   
110                    }   
111                }                  
112            }   
113               
114               
115            Integer cpageInt = Integer.valueOf(pageNo);   
116            str.append("<span ");   
117            if (styleClass != null) {   
118                str.append(" class='"+styleClass+"'>");   
119            } else {   
120                str.append(">");   
121            }   
122            //文本样式   
123            if (theme == null || "text".equals(theme)) {   
124                //当前页与总页数相等   
125                if (pageNo.equals(total)) {   
126                    //如果total = 1，则无需分页，显示“[第1页] [共1页]”   
127                    if ("1".equals(total)) {   
128                         
129                    } else {   
130                        //到达最后一页,显示“[首页] [上一页] [末页]” 
131                        str.append("<td>&nbsp;&nbsp;&nbsp; <br></td>");
132                        str.append("<td><a href='"+url+"?pageNo=1"+perUrl+"'><font class='luntanbmy'>首页</font></a></td>");
133                        str.append("<td>&nbsp;&nbsp;&nbsp; <br></td>");  
134                        str.append("<td><a href='"+url+"?pageNo=" + (cpageInt - 1)+perUrl+"'><font class='luntanbmy'>上一页</font></a></td>"); 
135                        str.append("<td>&nbsp;&nbsp;&nbsp; <br></td>");
136                        str.append("<td><a href='#'><font class='luntanbmy'>下一页</font></a></td>");
137                        str.append("<td>&nbsp;&nbsp;&nbsp; <br></td>");
138                        str.append("<td><a href='"+url+"?pageNo=" + total+perUrl+"'><font class='luntanbmy'>最后一页</font></a></td>");
139                        str.append("<td>&nbsp;&nbsp;&nbsp; <br></td>");
140                        str.append("<td class='lqbz'>共<span style='color: red'>" + total + "</span>页</td>"); 
141                        str.append("<td>&nbsp;&nbsp;&nbsp; <br></td>");
142                        str.append("<td class='lqbz'>当前第<span style='color: red'>" + pageNo + "</span>页</td>"); 
143                    }   
144                } else {   
145                    //当前页与总页数不相同   
146                    if ("1".equals(pageNo)) {   
147                        //第一页，显示“[首页] [下一页] [末页]”   
148                        str.append("<td>&nbsp;&nbsp;&nbsp; <br></td>");
149                        str.append("<td><a href='"+url+"?pageNo=1"+perUrl+"'><font class='luntanbmy'>首页</font></a></td>");
150                        str.append("<td>&nbsp;&nbsp;&nbsp; <br></td>");  
151                        str.append("<td><a href='#'><font class='luntanbmy'>上一页</font></a></td>"); 
152                        str.append("<td>&nbsp;&nbsp;&nbsp; <br></td>");
153                        str.append("<td><a href='"+url+"?pageNo=" + (cpageInt + 1) +perUrl+"'><font class='luntanbmy'>下一页</font></a></td>");
154                        str.append("<td>&nbsp;&nbsp;&nbsp; <br></td>");
155                        str.append("<td><a href='"+url+"?pageNo=" + total+perUrl+"'><font class='luntanbmy'>最后一页</font></a></td>");
156                        str.append("<td>&nbsp;&nbsp;&nbsp; <br></td>");
157                        str.append("<td class='lqbz'>共<span style='color: red'>" + total + "</span>页</td>"); 
158                        str.append("<td>&nbsp;&nbsp;&nbsp; <br></td>");
159                        str.append("<td class='lqbz'>当前第<span style='color: red'>" + pageNo + "</span>页</td>"); 
160                    } else {   
161                        //不是第一页，显示“[首页] [上一页] [下一页] [末页]”   
162                        str.append("<td>&nbsp;&nbsp;&nbsp; <br></td>");
163                        str.append("<td><a href='"+url+"?pageNo=1"+perUrl+"'><font class='luntanbmy'>首页</font></a></td>");
164                        str.append("<td>&nbsp;&nbsp;&nbsp; <br></td>");  
165                        str.append("<td><a href='"+url+"?pageNo=" + (cpageInt - 1)+perUrl+"'><font class='luntanbmy'>上一页</font></a></td>"); 
166                        str.append("<td>&nbsp;&nbsp;&nbsp; <br></td>");
167                        str.append("<td><a href='"+url+"?pageNo=" + (cpageInt + 1) +perUrl+"'><font class='luntanbmy'>下一页</font></a></td>");
168                        str.append("<td>&nbsp;&nbsp;&nbsp; <br></td>");
169                        str.append("<td><a href='"+url+"?pageNo=" + total+perUrl+"'><font class='luntanbmy'>最后一页</font></a></td>");
170                        str.append("<td>&nbsp;&nbsp;&nbsp; <br></td>");
171                        str.append("<td class='lqbz'>共<span style='color: red'>" + total + "</span>页</td>"); 
172                        str.append("<td>&nbsp;&nbsp;&nbsp; <br></td>");
173                        str.append("<td class='lqbz'>当前第<span style='color: red'>" + pageNo + "</span>页</td>"); 
174                    }   
175                }   
176            } 
177            str.append("</span>");   
178               
179            writer.write(str.toString());   
180               
181        } catch (IOException ex) {   
182            Logger.getLogger(Pages.class.getName()).log(Level.SEVERE, null, ex);   
183        }   
184        return result;   
185    }   
186} 

3.PageTag.java
 1package cn.com.sunrise.home.util;   
 2/*  
 3 * To change this template, choose Tools | Templates  
 4 * and open the template in the editor.  
 5 */  
 6  
 7  
 8import com.opensymphony.xwork2.util.ValueStack;   
 9import javax.servlet.http.HttpServletRequest;   
10import javax.servlet.http.HttpServletResponse;   
11import org.apache.struts2.components.Component;   
12import org.apache.struts2.views.jsp.ComponentTagSupport;   
13  
14/**  
15 * 分页标签  
16 * @author xiongwei  
17 */  
18public class PageTag extends ComponentTagSupport {   
19       
20    private String pageNo;   
21    private String total;   
22    private String styleClass;   
23    private String theme;   
24    private String includes;   
25       
26    public void setTheme(String theme) {   
27        this.theme = theme;   
28    }       
29    public void setStyleClass(String styleClass) {   
30        this.styleClass = styleClass;   
31    }   
32    public void setPageNo(String pageNo) {   
33        this.pageNo = pageNo;   
34    }   
35    public void setTotal(String total) {   
36        this.total = total;   
37    }   
38    public String getIncludes() {   
39        return includes;   
40    }   
41    public void setIncludes(String includes) {   
42        this.includes = includes;   
43    }   
44  
45    @Override  
46    public Component getBean(ValueStack arg0, HttpServletRequest arg1, HttpServletResponse arg2) {   
47        return new Pages(arg0, arg1);   
48    }   
49  
50    protected void populateParams() {   
51        super.populateParams();   
52           
53        Pages pages = (Pages)component;   
54        pages.setPageNo(pageNo);   
55        pages.setIncludes(includes);   
56        pages.setTotal(total);   
57        pages.setStyleClass(styleClass);   
58        pages.setTheme(theme);   
59  
60    }   
61} 
4.页面应用
<%@ taglib prefix="tangs" uri="/WEB-INF/pagination.tld"%>
<tangs:pages pageNo="pageNo" total="total"   theme="text"/>

5.action代码片段
 private Integer total;   
  private Integer pageNo=1;

 public String listAllHotNews(){
 pageConfig.setAllRecordNum(dao.recordCount());
  total = pageConfig.getAllPageNum();
  int start = pageConfig.getPerRecordNum()* (pageNo - 1);
  int size = pageConfig.getPerRecordNum();
  hotNewsList = dao.listAllNews(start,size);
  return SUCCESS;
 }


6.pageConfig.java
 1package cn.com.sunrise.home.credit.page;
 2
 3import cn.com.sunrise.home.util.Constraint;
 4
 5public class PageConfig {
 6    private int allRecordNum;// 总记录数
 7
 8    private int allPageNum;// 总页数
 9
10    private int perRecordNum =Constraint.PAGESIZE;// 每页显示数
11
12    private int currPageNO;// 当前页号
13
14    // 分页提供存取方法
15    public int getAllRecordNum() {
16        return allRecordNum;
17    }
18    //得到总页数，用下面的算法
19    public void setAllRecordNum(int allRecordNum) {
20        this.allRecordNum = allRecordNum;
21        if(allRecordNum % perRecordNum == 0){
22            this.allPageNum = allRecordNum / perRecordNum;
23        }else{
24            this.allPageNum = allRecordNum / perRecordNum + 1;
25        }
26    }
27
28    public int getAllPageNum() {
29        return allPageNum;
30    }
31
32    public void setAllPageNum(int allPageNum) {
33        this.allPageNum = allPageNum;
34    }
35
36    public int getPerRecordNum() {
37        return perRecordNum;
38    }
39
40    public void setPerRecordNum(int perRecordNum) {
41        this.perRecordNum = perRecordNum;
42    }
43
44    public int getCurrPageNO() {
45        return currPageNO;
46    }
47
48    public void setCurrPageNO(int currPageNO) {
49        this.currPageNO = currPageNO;
50    }
51}
52
53

posted on 2009-09-25 16:29 tobyxiong 阅读(2499) 评论(0)  编辑  收藏 所属分类: java


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