用poi3和chartdirect生成带图表的excel报表

源码如下：

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.File;

import java.io.ByteArrayOutputStream;

import java.io.IOException;

import java.util.ArrayList;

import java.util.List;

import java.awt.Image;

import java.awt.image.BufferedImage;

import javax.imageio.*;

import org.apache.poi.hssf.model.PictureShape;

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.HSSFWorkbook;

import org.apache.poi.hssf.usermodel.HSSFSheet;

import org.apache.poi.hssf.usermodel.HSSFPatriarch;

import org.apache.poi.hssf.usermodel.HSSFClientAnchor;

import org.apache.poi.poifs.filesystem.POIFSFileSystem;

import ChartDirector.Chart;

import ChartDirector.ChartViewer;

import ChartDirector.LineLayer;

import ChartDirector.XYChart;

public class TestPOI

{

public static void main(String[] args)

{

FileOutputStream fileOut = null;

try

{

// 创建一个图片

double[] data0 = { 42, 49, 33, 38, 51, 46, 29, 41, 44, 57, 59, 52,

37, 34, 51, 56, 56, 60, 70, 76, 63, 67, 75, 64, 51 };

double[] data1 = { 50, 55, 47, 34, 42, 49, 63, 62, 73, 59, 56, 50,

64, 60, 67, 67, 58, 59, 73, 77, 84, 82, 80, 84, 98 };

double[] data2 = { 36, 28, 25, 33, 38, 20, 22, 30, 25, 33, 30, 24,

28, 15, 21, 26, 46, 42, 48, 45, 43, 52, 64, 60, 70 };

String[] labels = { "0", "1", "2", "3", "4", "5", "6", "7", "8",

"9", "10", "11", "12", "13", "14", "15", "16", "17", "18",

"19", "20", "21", "22", "23", "24" };

XYChart c = new XYChart(500, 300, 0xffff80, 0x0, 1);

c.setPlotArea(55, 45, 420, 210, 0xffffff, -1, -1, 0xc0c0c0, -1);

c.addLegend(55, 25, false, "", 8).setBackground(Chart.Transparent);

c.addTitle("都是活雷锋", "宋体 Bold Italic", 11, 0xffffff)

.setBackground(0x800000, -1, 1);

c.yAxis().setTitle("mm");

c.xAxis().setLabels(labels);

c.xAxis().setLabelStep(3);

c.xAxis().setTitle("Jun 12, 2001");// Add a line layer to the chart

LineLayer layer = c.addLineLayer2();

layer.setLineWidth(2);

layer.addDataSet(data0, -1, "Server # 1");

layer.addDataSet(data1, -1, "Server # 2");

layer.addDataSet(data2, c.dashLineColor(0x3333ff, Chart.DashLine),

"Server # 3");

FileInputStream origin = null;

HSSFWorkbook wb = null;

POIFSFileSystem fsorigin = null;

try

{

origin = new FileInputStream("C://PRfcas//table.xls");

}

catch (java.io.FileNotFoundException e)

{

System.out.print(e);

}

try

{

fsorigin = new POIFSFileSystem(origin);

wb = new HSSFWorkbook(fsorigin);

}

catch (Exception e)

{

System.out.print(e);

}

HSSFFont f1 = wb.createFont();

f1.setFontHeightInPoints((short) 10);

f1.setFontName("宋体");

HSSFFont f2 = wb.createFont();

f2.setFontHeightInPoints((short) 12);

f2.setFontName("宋体");

// 指定sheet

HSSFSheet sheet1 = wb.getSheetAt(0);

sheet1.setDefaultColumnWidth((short) 10);

// 储存任务单项的名称格式

HSSFCellStyle c1 = sheet1.getRow(0).getCell((short) 0)

.getCellStyle();

List<String> columnname = new ArrayList<String>();

columnname.add("第一列");

columnname.add("第二列");

columnname.add("第三列");

List<List<String>> content = new ArrayList<List<String>>();

List<String> temp = new ArrayList();

temp.add("sd");

temp.add("sd");

temp.add("sd");

content.add(temp);

content.add(temp);

content.add(temp);

HSSFCell ce = null;

HSSFRow r = null;

int rowcount = 0;

int rowset = 0;

if (columnname.size() != 0)

{

r = sheet1.createRow(0);

for (int i = 0; i < columnname.size(); i++)

{

ce = r.createCell((short) i);

ce.setCellStyle(c1);

ce.setEncoding((short) 1);

ce.setCellValue((String) columnname.get(i));

}

rowcount++;

int n = 0;

// 写入第一个表的数据内容

for (n = 0; n < content.size(); n++)

{

r = sheet1.createRow(rowcount);

ArrayList value = (ArrayList) content.get(n);

for (int m = 0; m <= value.size() - 1; m++)

{

ce = r.createCell((short) m);

ce.setCellStyle(c1);

ce.setEncoding((short) 1);

if (value.get(m) != null)

{

String tmpstr = (String) value.get(m);

// if (tmpstr.indexOf(",")!=-1)

// tmpstr = tmpstr.substring(0,tmpstr.indexOf(","));

ce.setCellValue(tmpstr);

}

else

ce.setCellValue("空");

}

rowcount++;

}

}

HSSFPatriarch patriarch = sheet1.createDrawingPatriarch();

HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0, 0, 0,

(short) 0, 10, (short) 7, 30);

// 插入图片

patriarch.createPicture(anchor, wb.addPicture(c.makeChart2(2),

HSSFWorkbook.PICTURE_TYPE_JPEG));

fileOut = new FileOutputStream("d:/workbook.xls");

// 写入excel文件

wb.write(fileOut);

fileOut.close();

}

catch (IOException io)

{

io.printStackTrace();

System.out.println("io erorr : " + io.getMessage());

}

finally

{

if (fileOut != null)

{

try

{

fileOut.close();

}

catch (IOException e)

{

e.printStackTrace();

}

}

}

}

}

上面的代码单独运行的时候是没有任何问题的，但是当我把主要的代码放到weblogic中运行的时候页面出现了request url null异常，检查了无数遍没有发现代码错误，经调试，发现代码执行到这句的时候中断了 HSSFPatriarch patriarch = sheet1.createDrawingPatriarch();

让我百思不得其解的是同样是这句代码，为啥单独执行的时候没有任何问题，一放到weblogic下就出问题了呢？？？看来问题出在应用引入的jar包上面，看了一下，发现chartdirect的引用库下面还多出几个同事加的莫名奇妙的jar包，遂删除之，再运行，问题得到解决。估计是这几个jar包和weblogic自带的冲突了。