概述
虽然知道excel导出可能会出现要记录要分多个sheet的情况，但迄今为止还是没有遇到过，今天有空试了一把
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>export</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<%
try{
查询开始///
Class.forName("oracle.jdbc.driver.OracleDriver");
//连接数据库
java.sql.Connection conn = java.sql.DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:test","test","test123");
long start = 0;
long end = 100000;
//查询记录
List list = com.test.TEST_Manager.selectByCondition(conn, null,start,end);
int length = list.size(); //查询结果记录数
//设置每个sheet显示的记录数
int sheetSize = 100;
//有多少个sheet
int sheetNum = 1;
//计算要创建的sheet个数
if(length%sheetSize > 0){
sheetNum = length/sheetSize+1;
}else{
sheetNum = length/sheetSize;
}
conn.close();
conn = null;
查询结束///
//导出excel的名称
String fileName = "test_list.xls";
response.reset();
response.setHeader("Content-Disposition", "attachment; filename=" + fileName);
response.setContentType("application/vnd.ms-excel");
//输出流
java.io.OutputStream os = response.getOutputStream();
//创建可写工作薄
jxl.write.WritableWorkbook wwb = jxl.Workbook.createWorkbook(os);
for(int kk=0; kk<sheetNum ; kk++){
/创建sheet[kk]开始/
//创建可写工作表
jxl.write.WritableSheet ws = wwb.createSheet(("sheet"+kk), kk);
//设定第一行的行高
ws.setRowView(0,400);
//将第一列的宽度设为20
ws.setColumnView(0,15);
ws.setColumnView(1,30);
ws.setColumnView(2,30);
ws.setColumnView(3,30);
ws.setColumnView(4,30);
ws.setColumnView(5,15);
ws.setColumnView(6,30);
ws.setColumnView(7,15);
//设置标题开始
//设置写入字体
jxl.write.WritableFont wf = new jxl.write.WritableFont(jxl.write.WritableFont.ARIAL, 11,jxl.write.WritableFont.BOLD, false);
//设置CellFormat
jxl.write.WritableCellFormat wcfF = new jxl.write.WritableCellFormat(wf);
//用于Number的格式
//jxl.write.NumberFormat nf = new jxl.write.NumberFormat("0.00");
//jxl.write.WritableCellFormat priceformat = new jxl.write.WritableCellFormat(nf);
// 把水平对齐方式指定为左对齐
wcfF.setAlignment(jxl.format.Alignment.LEFT);
// 把垂直对齐方式指定为居中对齐
wcfF.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);
//设置列名
jxl.write.Label labelCF1 = new jxl.write.Label(0, 0, "测试ID",wcfF);
jxl.write.Label labelCF2 = new jxl.write.Label(1, 0, "测试名称",wcfF);
jxl.write.Label labelCF3 = null;
labelCF3 = new jxl.write.Label(2, 0, "测试上线时间",wcfF);
jxl.write.Label labelCF4 = new jxl.write.Label(3, 0, "别名",wcfF);
jxl.write.Label labelCF5 = new jxl.write.Label(4, 0, "数量",wcfF);
jxl.write.Label labelCF6 = new jxl.write.Label(5, 0, "状态1",wcfF);
jxl.write.Label labelCF7 = new jxl.write.Label(6, 0, "状态2",wcfF);
jxl.write.Label labelCF8 = new jxl.write.Label(7, 0, "类型",wcfF);
//绑定值
ws.addCell(labelCF1);
ws.addCell(labelCF2);
ws.addCell(labelCF3);
ws.addCell(labelCF4);
ws.addCell(labelCF5);
ws.addCell(labelCF6);
ws.addCell(labelCF7);
ws.addCell(labelCF8);
//设置标题结束
jxl.write.WritableFont wf1 = new jxl.write.WritableFont(jxl.write.WritableFont.ARIAL, 11,jxl.write.WritableFont.NO_BOLD, false);
//设置CellFormat
jxl.write.WritableCellFormat wcfF2 = new jxl.write.WritableCellFormat(wf1);
/循环写excel主体开始
for(int i = kk*sheetSize; i< (kk+1)*sheetSize ; i++ ){
if(i<length ){
com.test.TEST test = (com.test.TEST) list.get(i);
jxl.write.Label data1 = new jxl.write.Label(0, i+1-(kk*sheetSize) , (""+test.getTestid()),wcfF2);
jxl.write.Label data2 = new jxl.write.Label(1, i+1-(kk*sheetSize) , (""+test.getTest_name()),wcfF2);
jxl.write.Label data3 = new jxl.write.Label(2, i+1-(kk*sheetSize) , (""+test.getTest_date()),wcfF2);
jxl.write.Label data4 = new jxl.write.Label(3, i+1-(kk*sheetSize) , (""+test.getOthername()),wcfF2);
jxl.write.Label data5 = new jxl.write.Label(4, i+1-(kk*sheetSize) , (""+test.getSize()),wcfF2);
jxl.write.Label data6 = new jxl.write.Label(5, i+1-(kk*sheetSize) , (""+test.getState1()),wcfF2);
jxl.write.Label data7 = new jxl.write.Label(6, i+1-(kk*sheetSize) , (""+test.getState2()),wcfF2);
jxl.write.Label data8 = new jxl.write.Label(7, i+1-(kk*sheetSize) , (""+test.getType()),wcfF2);
ws.addCell(data1);
ws.addCell(data2);
ws.addCell(data3);
ws.addCell(data4);
ws.addCell(data5);
ws.addCell(data6);
ws.addCell(data7);
ws.addCell(data8);
}else{
break;
}
}
/循环写excel主体结束
/创建sheet[kk]结束/
}
//我猜测数据太多时，可能会导致内存溢出
wwb.write();
wwb.close();
os.flush();
os.close();
out.clear();
out = pageContext.pushBody();
}catch(Exception e){
e.printStackTrace();
}
%><br>
</body>
</html>
最后
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