利用poi,iText导出excel,pdf
先声明下,本人对poi,iText没有深入研究,只因网上实例很多,所以照葫芦画瓢,再加上自己进一步的重构,才有了下面的模型.只希望能帮助到大家。
代码写了很长时间了,现在也忘记结构了,大概应该能够帮助到需要的朋友.
//创建ExcelEntity
import java.io.OutputStream;
import java.util.List;
public class ExcelEntity<T> {
private String title = "报表标题";
private String[] headers;
private List<T> dataset;
private OutputStream os;
private boolean hasComment = false;
private String commentContent = "report";
private String commentAuthor = "Galo";
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String[] getHeaders() {
return headers;
}
public void setHeaders(String[] headers) {
this.headers = headers;
}
public List<T> getDataset() {
return dataset;
}
public void setDataset(List<T> dataset) {
this.dataset = dataset;
}
public OutputStream getOs() {
return os;
}
public void setOs(OutputStream os) {
this.os = os;
}
public boolean isHasComment() {
return hasComment;
}
public void setHasComment(boolean hasComment) {
this.hasComment = hasComment;
}
public String getCommentContent() {
return commentContent;
}
public void setCommentContent(String commentContent) {
this.commentContent = commentContent;
}
public String getCommentAuthor() {
return commentAuthor;
}
public void setCommentAuthor(String commentAuthor) {
this.commentAuthor = commentAuthor;
}
}
//创建PdfEntity
import java.io.OutputStream;
import java.util.List;
public class PdfEntity<T> {
private String title; //标题
private float margin_bottom = 50; //下边距
private float margin_left = 50;
private float margin_top = 50;
private float margin_right = 50;
private String pageSize = "A4"; //纸张大小
private String fileName = "E://report.pdf"; //文件名称
private String author = "Galo"; //作者
private String subject = "Zhang"; //子项
private boolean creationDate = true; //创建时间
private String creator = "Galo"; //创建者
private String keywords = "报表"; //关键字
private String pageHeader; //页眉
private String pageFooter; //页脚
private String[] headers; //表头
private List<T> dataset; //数据集
private OutputStream os; //文件输出流
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public float getMargin_bottom() {
return margin_bottom;
}
public void setMargin_bottom(float margin_bottom) {
this.margin_bottom = margin_bottom;
}
public float getMargin_left() {
return margin_left;
}
public void setMargin_left(float margin_left) {
this.margin_left = margin_left;
}
public float getMargin_top() {
return margin_top;
}
public void setMargin_top(float margin_top) {
this.margin_top = margin_top;
}
public float getMargin_right() {
return margin_right;
}
public void setMargin_right(float margin_right) {
this.margin_right = margin_right;
}
public String getPageSize() {
return pageSize;
}
public void setPageSize(String pageSize) {
this.pageSize = pageSize;
}
public String getFileName() {
return fileName;
}
public void setFileName(String fileName) {
this.fileName = fileName;
}
public String getAuthor() {
return author;
}
public void setAuthor(String author) {
this.author = author;
}
public String getSubject() {
return subject;
}
public void setSubject(String subject) {
this.subject = subject;
}
public boolean isCreationDate() {
return creationDate;
}
public void setCreationDate(boolean creationDate) {
this.creationDate = creationDate;
}
public String getCreator() {
return creator;
}
public void setCreator(String creator) {
this.creator = creator;
}
public String getKeywords() {
return keywords;
}
public void setKeywords(String keywords) {
this.keywords = keywords;
}
public String getPageHeader() {
return pageHeader;
}
public void setPageHeader(String pageHeader) {
this.pageHeader = pageHeader;
}
public String getPageFooter() {
return pageFooter;
}
public void setPageFooter(String pageFooter) {
this.pageFooter = pageFooter;
}
public String[] getHeaders() {
return headers;
}
public void setHeaders(String[] headers) {
this.headers = headers;
}
public List<T> getDataset() {
return dataset;
}
public void setDataset(List<T> dataset) {
this.dataset = dataset;
}
public OutputStream getOs() {
return os;
}
public void setOs(OutputStream os) {
this.os = os;
}
}
//下面是具体导出方法
import java.awt.Color;
import java.io.IOException;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.Iterator;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFClientAnchor;
import org.apache.poi.hssf.usermodel.HSSFComment;
import org.apache.poi.hssf.usermodel.HSSFFont;
import org.apache.poi.hssf.usermodel.HSSFPatriarch;
import org.apache.poi.hssf.usermodel.HSSFRichTextString;
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.hssf.util.HSSFColor;
import com.jd.report.entity.ExcelEntity;
import com.jd.report.entity.PdfEntity;
import com.jd.report.util.PdfParagraph;
import com.lowagie.text.Cell;
import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Element;
import com.lowagie.text.HeaderFooter;
import com.lowagie.text.PageSize;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.PdfPCell;
import com.lowagie.text.pdf.PdfPTable;
import com.lowagie.text.pdf.PdfWriter;
public class ExportUtils<T> {
@SuppressWarnings("unchecked")
public void exportPdf(PdfEntity<T> pdfEntity){
String pageSize = pdfEntity.getPageSize();
Rectangle rectangle = new Rectangle(getPdfPageSize(pageSize));
Document document = new Document(rectangle,pdfEntity.getMargin_bottom(),pdfEntity.getMargin_left(),pdfEntity.getMargin_right(),pdfEntity.getMargin_top());
try {
PdfWriter.getInstance(document, pdfEntity.getOs());
//基本配置信息
document.addTitle(pdfEntity.getTitle());
document.addAuthor(pdfEntity.getAuthor());
if(pdfEntity.isCreationDate()){
document.addCreationDate();
}
document.addCreator(pdfEntity.getCreator());
document.addKeywords(pdfEntity.getKeywords());
document.addSubject(pdfEntity.getSubject());
//定义页眉和页脚
String pageHeader = pdfEntity.getPageHeader();
String pageFooter = pdfEntity.getPageFooter();
HeaderFooter header = null;
HeaderFooter footer = null;
if(pageHeader != null){
header = new HeaderFooter(new PdfParagraph(pageHeader,14,true),false);
header.setBorderWidth(0);
header.setAlignment(Element.ALIGN_CENTER);
}
if(pageFooter != null){
footer = new HeaderFooter(new PdfParagraph(pageFooter,14,true),false);
footer.setBorderWidth(0);
footer.setAlignment(Element.ALIGN_CENTER);
}
document.setHeader(header);
document.setFooter(footer);
//打开pdf文档
document.open();
String[] headers = pdfEntity.getHeaders();
//创建多少列的表格
PdfPTable table = new PdfPTable(headers.length);
table.setHorizontalAlignment(Element.ALIGN_CENTER);
table.setWidthPercentage(16 * headers.length);
//产生表格栏
PdfPCell cell = null;
for (int i = 0; i < headers.length; i++) {
cell = new PdfPCell(new PdfParagraph(headers[i], 14,true));
cell.setHorizontalAlignment(Cell.ALIGN_CENTER);
cell.setVerticalAlignment(Cell.ALIGN_MIDDLE);
cell.setBackgroundColor(Color.cyan);
cell.setBorderColor(Color.green);
table.addCell(cell);
}
//装载数据行
Collection<T> dataset = pdfEntity.getDataset();
Iterator<T> it = dataset.iterator();
while(it.hasNext()){
T t = it.next();
Class tClass = t.getClass();
Field[] fields = tClass.getDeclaredFields();
for (int i = 0; i < fields.length; i++) {
String fieldName = fields[i].getName();
String getMethodName = "get" + fieldName.substring(0,1).toUpperCase() + fieldName.substring(1);
Method getMethod = tClass.getMethod(getMethodName, new Class[]{});
Object value = getMethod.invoke(t, new Object[]{});
value = value == null ? "" : value;
if(value != null){
cell = new PdfPCell(new PdfParagraph(value.toString(),12,false));
cell.setHorizontalAlignment(Cell.ALIGN_CENTER);
cell.setVerticalAlignment(Cell.ALIGN_MIDDLE);
cell.setBorderColor(Color.green);
table.addCell(cell);
}
}
}
document.add(table);
document.close();
} catch (DocumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (NoSuchMethodException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InvocationTargetException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@SuppressWarnings("unchecked")
public void exportExcel(ExcelEntity excelEntity){
String title = excelEntity.getTitle();
HSSFWorkbook workbook = new HSSFWorkbook();
//生成一个表格
HSSFSheet sheet = workbook.createSheet(title);
//设置默认列宽度为15个字节
sheet.setDefaultColumnWidth(15);
//生成一个标题样式
HSSFCellStyle style = workbook.createCellStyle();
//设置居中
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
//设置填充前景色和背景色
style.setFillForegroundColor(HSSFColor.YELLOW.index);
style.setFillBackgroundColor(HSSFColor.WHITE.index);
style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
//设置线条宽度
style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
style.setBorderRight(HSSFCellStyle.BORDER_THIN);
style.setBorderTop(HSSFCellStyle.BORDER_THIN);
//生成一个字体
HSSFFont font = workbook.createFont();
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
font.setColor(HSSFColor.VIOLET.index);
font.setFontHeightInPoints((short)12);
//字体应用到样式
style.setFont(font);
//生成主体样式
HSSFCellStyle bodyStyle = workbook.createCellStyle();
//设置居中
bodyStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);
//设置填充前景色和背景色
bodyStyle.setFillForegroundColor(HSSFColor.WHITE.index);
bodyStyle.setFillBackgroundColor(HSSFColor.WHITE.index);
bodyStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
//设置线条宽度
bodyStyle.setBorderBottom(HSSFCellStyle.BORDER_THIN);
bodyStyle.setBorderLeft(HSSFCellStyle.BORDER_THIN);
bodyStyle.setBorderRight(HSSFCellStyle.BORDER_THIN);
bodyStyle.setBorderTop(HSSFCellStyle.BORDER_THIN);
//生成一个字体
HSSFFont bodyFont = workbook.createFont();
bodyFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
bodyFont.setColor(HSSFColor.VIOLET.index);
bodyFont.setFontHeightInPoints((short)12);
//字体应用到样式
bodyStyle.setFont(bodyFont);
HSSFPatriarch patriarch = sheet.createDrawingPatriarch();
HSSFComment comment = patriarch.createComment(new HSSFClientAnchor(0,0,0,0,(short)4,2,(short)6,5));
comment.setString(new HSSFRichTextString(excelEntity.getCommentContent()));
comment.setAuthor(excelEntity.getCommentAuthor());
//产生标题行
String[] headers = excelEntity.getHeaders();
int index = 0;
HSSFRow row = sheet.createRow(index);
HSSFCell cell = null;
for (short i = 0; i < headers.length; i++) {
cell = row.createCell(i);
cell.setCellStyle(style);
HSSFRichTextString text = new HSSFRichTextString(headers[i]);
cell.setCellValue(text);
}
//遍历集合,产生数据行
Collection<T> dataset = excelEntity.getDataset();
Iterator<T> it = dataset.iterator();
while(it.hasNext()){
index++;
row = sheet.createRow(index);
T t = it.next();
Class tClass = t.getClass();
Field[] fields = tClass.getDeclaredFields();
for (int i = 0; i < fields.length; i++) {
cell = row.createCell(i);
cell.setCellStyle(style);
String fieldName = fields[i].getName();
String getMethodName = "get" + fieldName.substring(0,1).toUpperCase() + fieldName.substring(1);
try {
Method getMethod = tClass.getMethod(getMethodName, new Class[]{});
Object value = getMethod.invoke(t, new Object[]{});
value = value == null ? "" : value;
if(value != null){
HSSFRichTextString textString = new HSSFRichTextString(value.toString());
cell.setCellValue(textString);
cell.setCellStyle(bodyStyle);
}
} catch (SecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (NoSuchMethodException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InvocationTargetException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
try {
//写出excel
workbook.write(excelEntity.getOs());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void exportWord(){
}
public Rectangle getPdfPageSize(String pageSize){
Rectangle pSize = null;
if("A4".equals(pageSize)){
pSize = PageSize.A4;
}else if("A3".equals(pageSize)){
pSize = PageSize.A3;
}else if("A2".equals(pageSize)){
pSize = PageSize.A2;
}else if("A1".equals(pageSize)){
pSize = PageSize.A1;
}else{
pSize = PageSize.A4;
}
return pSize;
}
}
//对于pdf中文乱码,有如下辅助类
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
import com.lowagie.text.BadElementException;
import com.lowagie.text.Cell;
import com.lowagie.text.Chunk;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Font;
import com.lowagie.text.Paragraph;
import com.lowagie.text.Phrase;
import com.lowagie.text.pdf.BaseFont;
public class PdfParagraph extends Paragraph {
private static final long serialVersionUID = -244970043180837974L;
private static Properties pro ;
private static InputStream is ;
static{
try {
is = PdfParagraph.class.getClassLoader().getResourceAsStream("fontSrc.properties");
pro = new Properties();
pro.load(is);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
try {
is.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public static String getPlan(String source){
return pro.getProperty(source);
}
public PdfParagraph(String content) {
super(content, getChineseFont(12, false));
}
public PdfParagraph(String content, int fontSize, boolean isBold) {
super(content, getChineseFont(fontSize, isBold));
}
// 设置字体-返回中文字体
protected static Font getChineseFont(int nfontsize, boolean isBold) {
BaseFont bfChinese;
Font fontChinese = null;
try {
bfChinese = BaseFont.createFont(getPlan("fontSrc") + ":\\windows\\fonts\\simsun.ttc,1",BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
if (isBold) {
fontChinese = new Font(bfChinese, nfontsize, Font.BOLD);
} else {
fontChinese = new Font(bfChinese, nfontsize, Font.NORMAL);
}
} catch (DocumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return fontChinese;
}
// 转化中文
protected Cell ChangeCell(String str, int nfontsize, boolean isBold) throws IOException, BadElementException, DocumentException {
Phrase ph = ChangeChinese(str, nfontsize, isBold);
Cell cell = new Cell(ph);
// cell.setBorderWidth(3);
return cell;
}
// 转化中文
protected Chunk ChangeChunk(String str, int nfontsize, boolean isBold) throws IOException, BadElementException, DocumentException {
Font FontChinese = getChineseFont(nfontsize, isBold);
Chunk chunk = new Chunk(str, FontChinese);
return chunk;
}
// 转化中文
protected Phrase ChangeChinese(String str, int nfontsize, boolean isBold) throws IOException, BadElementException, DocumentException {
Font FontChinese = getChineseFont(nfontsize, isBold);
Phrase ph = new Phrase(str, FontChinese);
return ph;
}
}
}
代码写了很长时间了,现在也忘记结构了,大概应该能够帮助到需要的朋友.