Java标签分页实现

Java实现标签分页

最近为了开发一个网站，里面要用分页功能，但是之前很少自己写分页标签，又不想用现成框架。所以自己参考了些资料，写了个分页例子测试了一下。

代码主要分为三个类：

1. PageTag 分页标签类
2. Page 分页bean
3. Constant 设置常量

Page代码：

Java代码

1. /**
2. *
3. * @author byyang
4. *
5. */
6. public class Page
7. {
8. private int current =0; //当前页，默认为第一页
9. private int size; //记录总数
10. private int length;//每页的长度
11. private String url; //访问路径
13. public Page(int offset,int size, int length) {
14. super();
15. this.current = offset;
16. this.size = size;
17. this.length = length;
18. }
20. /**
21. * 获取总页数
22. * @return
23. */
24. public int pageCount(){
25. int pagecount = 0;
26. if(this.size % this.length == 0){
27. pagecount = this.size / this.length;
28. }else{
29. pagecount = this.size / this.length +1;
30. }
32. return pagecount;
33. }
35. //最后一页开始条数
36. public int lastPageOffset(){
37. return this.size - lastPageSize();
38. }
40. //最后一页页大小
41. public int lastPageSize(){
42. int lastpagesize = 0;
43. if(this.size % this.length == 0){
44. lastpagesize = this.length;
45. }else{
46. lastpagesize = this.size % this.length;
47. }
48. return lastpagesize;
49. }
51. //获取起始页
52. public int getOffset() {
53. return current;
54. }
55. //总记录数
56. public int getSize() {
57. return size;
58. }
59. //每页大小
60. public int getLength() {
61. return length;
62. }
63. //获取访问路径
64. public String getUrl() {
65. return url;
66. }
68. //上一页
69. public int getLastOffset(){
70. int offset = this.getOffset() -this.getLength();
71. if(offset > 0){
72. return offset;
73. }else{
74. return 0;
75. }
77. }
78. //下一页
79. public int getNextOffset(){
80. int offset = this.getOffset() +this.getLength();
81. if(offset > this.getSize()){
82. return getLastOffset();
83. }else{
84. return offset;
85. }
86. }
88. public String getPageNavigation(){
89. String pageNavigation = "";
90. return pageNavigation;
91. }
93. public void setOffset(int offset) {
94. this.current = offset;
95. }
97. public void setSize(int size) {
98. this.size = size;
99. }
101. public void setLength(int length) {
102. this.length = length;
103. }
105. public void setUrl(String url) {
106. this.url = url;
107. }
108. }

/** *  * @author byyang *  */public class Page{private int current = 0;  //当前页，默认为第一页private int size;     //记录总数private int length;   //每页的长度private String url;   //访问路径public Page(int offset, int size, int length) {super();this.current = offset;this.size = size;this.length = length;}/** * 获取总页数 * @return */public int pageCount(){int pagecount = 0;if(this.size % this.length == 0){pagecount = this.size / this.length;}else{pagecount = this.size / this.length + 1;}return pagecount;}//最后一页开始条数public int lastPageOffset(){return this.size - lastPageSize();}//最后一页页大小public int lastPageSize(){int lastpagesize = 0;if(this.size % this.length == 0){lastpagesize = this.length;}else{lastpagesize = this.size % this.length;}return lastpagesize;}//获取起始页public int getOffset() {return current;}//总记录数public int getSize() {return size;}//每页大小public int getLength() {return length;}//获取访问路径public String getUrl() {return url;}//上一页public int getLastOffset(){int offset = this.getOffset() - this.getLength();if(offset > 0){return offset;}else{return 0;}}//下一页public int getNextOffset(){int offset =  this.getOffset() + this.getLength();if(offset > this.getSize()){return getLastOffset();}else{return offset;}}public String getPageNavigation(){String pageNavigation = "";return pageNavigation;}public void setOffset(int offset) {this.current = offset;}public void setSize(int size) {this.size = size;}public void setLength(int length) {this.length = length;}public void setUrl(String url) {this.url = url;}}