解析xml模板匯出Excel
阿新 • • 發佈：2019-01-01
1.pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.tiglle</groupId>
<artifactId 2.excelConf.xml
<?xml version="1.0" encoding="UTF-8"?>
<!-- 利用xml解析技術,定義匯出Excel的模板:包含各種樣式 -->
<excel id="student" name="student" excelName="學生資訊匯入">
<columns>
<column index="A" width="17em"></column>
<column index="B" width="17em"></column>
<column index="C" width="17em"></column>
<column index="D" width="17em"></column>
<column index="E" width="17em"></column>
<column index="F" width="17em"></column>
</columns>
<title rowspan="1" colspan="6">學生資訊</title>
<table>
<tr height="16px">
<td>編號</td>
<td>姓名</td>
<td>年齡</td>
<td>生日</td>
<td>愛好</td>
<td>性別</td>
</tr>
</table>
<format height="16px" firstRow="2" finstCol="0" repeat="5">
<td type="String" allowNull="false" maxLength="30"></td>
<td type="String" allowNull="false" maxLength="40"></td>
<td type="number" allowNull="false" format="##0"></td>
<td type="date" allowNull="true" maxLength="30"></td>
<td type="String" allowNull="true" maxLength="30"></td>
<td type="enum" allowNull="false" format="男,女"></td>
</format>
</excel>3.GenerateExcelByTemplate.java
package com.tiglle.readXml;
import java.awt.Color;
import java.io.File;
import java.io.FileOutputStream;
import java.net.URL;
import java.util.List;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFFont;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.HorizontalAlignment;
import org.apache.poi.ss.util.CellRangeAddress;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.input.SAXBuilder;
/**
* 根據xml配置(格式，樣式，標題等)
* 使用jdom讀取xml並生成Excle
* @author Administrator
*
*/
public class GenerateExcelByTemplate {
public static void main(String[] args){
/****讀取classpath下的檔案*****/
//根據本類物件獲取類載入器
ClassLoader classLoader = new GenerateExcelByTemplate().getClass().getClassLoader();
//根據檔名從classpath下獲取檔案路徑
URL pathUrl = classLoader.getResource("excelModel.xml");
//根據URL路徑獲取檔案物件
File xmlFile = new File(pathUrl.getFile());
try {
//建立Excel
HSSFWorkbook workbook = new HSSFWorkbook();
//建立一個sheet頁
HSSFSheet sheet1 = workbook.createSheet("sheet第一頁");
/*****通過jdom解析xml檔案,並更具讀取配置生成Excle***/
//獲取解析器
SAXBuilder build = new SAXBuilder();
//將檔案內容讀進解析器,生成document物件
Document document = build.build(xmlFile);
//獲取xml跟節點
Element root = document.getRootElement();
//獲取excel名稱(跟節點的excelName屬性)
String excelName = root.getAttribute("excelName").getValue();
//設定列的屬性和寬度
Element cloumns = root.getChild("columns");
//獲取子元素
List<Element> childCloumns = cloumns.getChildren("cloumn");
//迴圈設定每個列
for(int i=0;i<childCloumns.size();i++){
Element cloumn = childCloumns.get(i);
//獲取每個列的寬度屬性(width)
String width = cloumn.getAttribute("width").getValue();
//擷取，得到單位
String unit = width.substring(width.length()-2, width.length());
//將單位清空,得到值
String num = width.replace(unit, "");
//根據不同的單位轉換成Excel的寬度
int excelWitdh = 0;
switch(unit){
case "px":
excelWitdh = Math.round(Float.parseFloat(num)*37F);
break;
case "em":
excelWitdh = Math.round(Float.parseFloat(num)*267.5F);
break;
}
//設定列寬
sheet1.setColumnWidth(i, excelWitdh);
}
//設定第一行的標題
Element title = root.getChild("title");
//標題內容
String titleStr = title.getText();
//合併的行數
int rowspan = title.getAttribute("rowspan").getIntValue()-1;
//合併的列數
int colspan = title.getAttribute("colspan").getIntValue()-1;
//建立0行
HSSFRow row0 = sheet1.createRow(0);
//建立一個cell(單元格)
HSSFCell titleCell = row0.createCell(0);
//設定內容
titleCell.setCellValue(titleStr);
//設定格式
HSSFCellStyle cellStyle = workbook.createCellStyle();
//文字居中
cellStyle.setAlignment(HorizontalAlignment.CENTER);
//設定字型
HSSFFont cellFont = workbook.createFont();
//文字顏色
cellFont.setColor((short) 20);
//字型加入到樣式中
cellStyle.setFont(cellFont);
titleCell.setCellStyle(cellStyle);
//合併單元格(startY,endY,startX,endX)
sheet1.addMergedRegion(new CellRangeAddress(0, rowspan, 0, colspan));
//設定第二行的資料標題
Element tr = root.getChild("table").getChild("tr");
List<Element> tds = tr.getChildren("td");
//建立1行
HSSFRow row1 = sheet1.createRow(1);
//設定高度(擷取單位並且轉換長度)
// row1.setHeight((short) tr.getAttribute("height").getIntValue());
for(int i=0;i<tds.size();i++){
Element td = tds.get(i);
//建立列
HSSFCell cell1 = row1.createCell(i);
//設定內容
cell1.setCellValue(td.getText());
}
//設定樣式:迴圈讀取xml配置，就不寫了 TODO
//生成Excel檔案
File excelFile = new File("e:/"+excelName+".xls");
//建立
excelFile.createNewFile();
//將Excel內容寫入檔案
FileOutputStream fos = new FileOutputStream(excelFile);
//開始寫
workbook.write(fos);
//關閉流
fos.close();
workbook.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}