导出excel与pdf工具类

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
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.hssf.util.CellRangeAddress;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.Font;
import org.apache.poi.ss.usermodel.Workbook;

import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Paragraph;
import com.lowagie.text.pdf.BaseFont;
import com.lowagie.text.pdf.PdfPCell;
import com.lowagie.text.pdf.PdfPTable;
import com.lowagie.text.pdf.PdfWriter;

/**
* 导出excel与pdf<br>
* <p>
*
*
* @author cjj
*
*/
public class ExportUtil {

/**
* 导出excel<br>
* <p>
* 方法的详述<br>
*
* @param 参数
* 参数描述
*
* @author cjj
*/
public static void ExportXls(List list, OutputStream os, String colId,
String colName) {

// 2003版本
HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet sheet1 = (HSSFSheet) wb.createSheet("sheet1");

HSSFRow row = sheet1.createRow((short) 0);
HSSFCell cell = null;
CellStyle style = wb.createCellStyle();
style.setAlignment(HSSFCellStyle.VERTICAL_CENTER);
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
org.apache.poi.ss.usermodel.Font font = wb.createFont();
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
style.setFont(font);

String[] cName = colName.split(",");
for (int index = 0; index < cName.length; index++) {
cell = row.createCell(index);
cell.setCellStyle(style);
cell.setCellValue(cName[index]);
}

if (list != null && list.size() > 0) {
style = wb.createCellStyle();
style.setAlignment(HSSFCellStyle.VERTICAL_CENTER);
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
font = wb.createFont();
font.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL);
style.setFont(font);

String[] cid = colId.split(",");
Method method = null;
String value = "";
for (int indexList = 0; indexList < list.size(); indexList++) {
row = sheet1.createRow((short) indexList + 1);
Object obj = list.get(indexList);
for (int index = 0; index < cid.length; index++) {
value = getValue(cid[index], obj);
cell = row.createCell(index);
cell.setCellStyle(style);
cell.setCellValue(value);
sheet1.autoSizeColumn((short) index);
value = "";
}
}
}

try {
wb.write(os);
} catch (IOException e) {
e.printStackTrace();
}

}

/**
* 导出pdf<br>
* <p>
* 方法的详述<br>
*
* @param 参数
* 参数描述
*
* @author cjj
*/
public static void ExportPdf(List<Object> list, OutputStream os,
String colId, String colName) {
Document document = new Document();

try {
// open output stream
PdfWriter.getInstance(document, os);
// open PDF document
document.open();
// set chinese font
BaseFont bfChinese = BaseFont.createFont("STSong-Light",
"UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
com.lowagie.text.Font font = new com.lowagie.text.Font(bfChinese,
8, com.lowagie.text.Font.BOLD);

// process business data
String[] cid = colId.split(",");
String[] cname = colName.split(",");
// create table with columns
PdfPTable table = new PdfPTable(cid.length);
// 100% width
table.setWidthPercentage(100);
table.setHorizontalAlignment(PdfPTable.ALIGN_LEFT);
// create cells
PdfPCell cell = new PdfPCell();
// set color
// cell.setBackgroundColor(new Color(213, 141, 69));
cell.setHorizontalAlignment(PdfPCell.ALIGN_CENTER);
// set title
for (int index = 0; index < cname.length; index++) {
cell.setPhrase(new Paragraph(cname[index], font));
table.addCell(cell);
}

font = new com.lowagie.text.Font(bfChinese, 8,
com.lowagie.text.Font.NORMAL);
if (list != null && list.size() > 0) {
Method method = null;
String value = "";
for (int indexList = 0; indexList < list.size(); indexList++) {
Object obj = list.get(indexList);
for (int index = 0; index < cid.length; index++) {
value = getValue(cid[index], obj);
cell.setPhrase(new Paragraph(value, font));
table.addCell(cell);
value = "";
}
}
}

document.add(table);
} catch (DocumentException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
document.close();
}

}

/**
*
* 对时间或数字进行格式处理<br>
* <p>
* 方法的详述<br>
*
* @param 参数
* 参数描述
*
* @return String
*
* @author cjj
*/
public static String getValue(String cid, Object obj) {
String value = "";
String methodStr = "";
Method method = null;

try {
if (cid.indexOf("javaRenderer") == -1) {
int iPoint = cid.indexOf(".");
if(iPoint!=-1){ // 取出关联实体里的数据 add by zhangpengyu
String begin = cid.substring(0, iPoint);
String end = cid.substring(iPoint+1,cid.length());
String beginMed = "get"+begin.substring(0,1).toUpperCase()+begin.substring(1,begin.length());
String endMed = "get"+end.substring(0,1).toUpperCase()+end.substring(1,end.length());
Method bmed = obj.getClass().getMethod(beginMed, null);
Object fentity = bmed.invoke(obj, null);
Method emed = fentity.getClass().getMethod(endMed, null);
value = String.valueOf(emed.invoke(fentity, null));
}else{
methodStr = "get" + cid.substring(0, 1).toUpperCase()
+ cid.substring(1, cid.length());
method = obj.getClass().getMethod(methodStr, null);
if (method != null) {
String typeName = method.getReturnType().getName();
if (method.invoke(obj, null) == null) {
value = "";
} else {
if (typeName.indexOf("Date") != -1) {
SimpleDateFormat f = new SimpleDateFormat(
"yyyy-MM-dd HH:mm:ss");

value = f.format(method.invoke(obj, null));
} else {
value = String.valueOf(method.invoke(obj, null));
}
}
}
}
} else {

methodStr = cid.split("javaRenderer")[1];
method = obj.getClass().getMethod(methodStr, null);
value = String.valueOf(method.invoke(obj, null));
}
} catch (SecurityException e) {
e.printStackTrace();
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}

return value;
}

}