分页标签
2009-09-26 00:00:00 来源：WEB开发网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> <br></td>");
132 str.append("<td><a href='"+url+"?pageNo=1"+perUrl+"'><font class='luntanbmy'>首页</font></a></td>");
133 str.append("<td> <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> <br></td>");
136 str.append("<td><a href='#'><font class='luntanbmy'>下一页</font></a></td>");
137 str.append("<td> <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> <br></td>");
140 str.append("<td class='lqbz'>共<span style='color: red'>" + total + "</span>页</td>");
141 str.append("<td> <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> <br></td>");
149 str.append("<td><a href='"+url+"?pageNo=1"+perUrl+"'><font class='luntanbmy'>首页</font></a></td>");
150 str.append("<td> <br></td>");
151 str.append("<td><a href='#'><font class='luntanbmy'>上一页</font></a></td>");
152 str.append("<td> <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> <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> <br></td>");
157 str.append("<td class='lqbz'>共<span style='color: red'>" + total + "</span>页</td>");
158 str.append("<td> <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> <br></td>");
163 str.append("<td><a href='"+url+"?pageNo=1"+perUrl+"'><font class='luntanbmy'>首页</font></a></td>");
164 str.append("<td> <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> <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> <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> <br></td>");
171 str.append("<td class='lqbz'>共<span style='color: red'>" + total + "</span>页</td>");
172 str.append("<td> <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}
- ››分页标签
- ››标签使用
- ››标签库的深入研究
- ››标签库使用指南1－Application标签库
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