java怎么实现分页
1.PaginationTable.java
package com.sinoest.train.common;
import java.util.List;
/**
* 分页表
* @author 李易烜-修改
* 2009-6-17
*/
public class PaginationTable {
private List<?> entryList;//> 数据
private int totalNumOfRows;// 总行数
private int rowsPerPage = 10;// 每页行数
private int beginIndex = 0;//---> 当前页起始行
private int endIndex;//-----> 终止页
private int pageIndex;//----> 当前页
private int pageCount;//----> 总页数
public PaginationTable(){ }
public PaginationTable(int totalNumOfRows, int pageIndex) {
//super();
if(pageIndex<=0){
pageIndex=1;
}
this.totalNumOfRows = totalNumOfRows;
if(totalNumOfRows%rowsPerPage==0){
this.pageCount = this.totalNumOfRows/rowsPerPage;
}else {
this.pageCount = this.totalNumOfRows/rowsPerPage+1;
}
if(pageIndex > pageCount){
pageIndex = pageCount;
}
this.pageIndex = pageIndex;
if(totalNumOfRows > 0){
this.beginIndex = (pageIndex-1)*rowsPerPage;
}
this.endIndex = pageIndex*rowsPerPage;
endIndex = endIndex>this.totalNumOfRows ? this.totalNumOfRows : endIndex;
}
public PaginationTable(int rowsPerPage, int totalNumOfRows, int pageIndex) {
//super();
this.rowsPerPage = rowsPerPage;
if(pageIndex<=0){
pageIndex=1;
}
this.totalNumOfRows = totalNumOfRows;
if(totalNumOfRows%rowsPerPage==0){
this.pageCount = this.totalNumOfRows/rowsPerPage;
}else {
this.pageCount = this.totalNumOfRows/rowsPerPage+1;
}
if(pageIndex > pageCount){
pageIndex = pageCount;
}
this.pageIndex = pageIndex;
if(totalNumOfRows > 0){
this.beginIndex = (pageIndex-1)*rowsPerPage;
}
this.endIndex = pageIndex*rowsPerPage;
endIndex = endIndex>this.totalNumOfRows ? this.totalNumOfRows : endIndex;
}
/** 总页数，最少一页，0行也按一页计算 */
public int getTotalNumOfPage() {
return this.totalNumOfRows / this.rowsPerPage + 1;
}
/** 数据 */
相关文档：
1. MD5加密，常用于加密用户名密码，当用户验证时。
protected byte[] encrypt(byte[] obj) ...{
try ...{
MessageDigest md5 = MessageDigest.getInstance("MD5");
md5.update(obj);
return md5.digest();
} catch (NoSuchAlgorithmException e) ...{
e.printStackTrace();
� ......
package testPackage;
class Test {
public static void main(String[] args) {
String hello = "Hello", lo = "lo";
System.out.print((hello == "Hello") + " ");
System.out.print((Other.hello == hello) + " ");
System.out.print((other.Other.hello == hello) + " ");
System.out.print((hello == ("Hel"+"lo ......
JDBC读取数据库元数据,生成JAVA实体类
package com.nffish.util;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import com.nffish.c ......
Java版支付宝接口开发
需求：调用支付宝接口的接口并集成到商城
调用支付宝接口所需要的“支付宝合作伙伴id”和“支付宝安全校验码”公司都给提供好了，支付宝官方那里也有该接口的“实物商品交易服务集成技术文档”及相关的DEMO源码。公司让我用JAVA来写，终于暂时不用再写JS了，嘿嘿&hel ......
