struts.xml里的配置如下：
application/vnd.ms-word attachment;filename="studentCurriculum.doc" wordFile
对应的Action代码如下：
import java.awt.Color;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.InputStream;import java.util.List;import java.util.Map;import cn.com.wiscom.jwxk.entity.StudentCurriculum;import com.lowagie.text.Cell;import com.lowagie.text.Document;import com.lowagie.text.Element;import com.lowagie.text.Font;import com.lowagie.text.PageSize;import com.lowagie.text.Paragraph;import com.lowagie.text.Phrase;import com.lowagie.text.Table;import com.lowagie.text.rtf.RtfWriter2;import com.lowagie.text.rtf.style.RtfFont;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;/** 学生课表导出 */public class StudentCurriculumWordAction extends ActionSupport { private static final long serialVersionUID = 2150958354251222076L; @Override public String execute() throws Exception { // TODO Auto-generated method stub return SUCCESS; } @SuppressWarnings( { "serial", "unchecked" }) public InputStream getWordFile() throws Exception { Map session = ActionContext.getContext().getSession(); List leftList = (List ) session .get("stuCurriculumleftList"); String[] stuCurriculumArray = (String[]) session .get("stuCurriculumrightArray"); float totalXf = 0; /** 创建Document对象（word文档） */ Document doc = new Document(PageSize.A4); /** 新建字节数组输出流 */ ByteArrayOutputStream baos = new ByteArrayOutputStream(); /** 建立一个书写器与document对象关联，通过书写器可以将文档写入到输出流中 */ RtfWriter2.getInstance(doc, baos); doc.open(); /** 标题字体 */ RtfFont titleFont = new RtfFont("仿宋_GB2312", 12, Font.NORMAL, Color.BLACK); /** 正文字体 */ RtfFont contextFont = new RtfFont("仿宋_GB2312", 9, Font.NORMAL, Color.BLACK); /** 表格设置 */ Table table = new Table(12, 16); int[] withs = { 3, 9, 5, 4, 4, 3, 3, 14, 14, 14, 14, 14 }; /** 设置每列所占比例 */ table.setWidths(withs); /** 表格所占页面宽度 */ table.setWidth(100); /** 居中显示 */ table.setAlignment(Element.ALIGN_CENTER); /** 自动填满 */ table.setAutoFillEmptyCells(true); /** 第一行（标题） */ String titleString = "东南大学 " + (String) session.get("selectXn") + "-" + String.valueOf(Integer.parseInt((String) session .get("selectXn"))) + " 学年第 " + (String) session.get("selectXq") + "学期 学生个人课表"; Paragraph title = new Paragraph(titleString); // 设置标题格式对其方式 title.setAlignment(Element.ALIGN_CENTER); title.setFont(titleFont); doc.add(title); /** 第二行（正文） */ String contextString = "院系:" + (String) session.get("yxmc") + " 专业:" + (String) session.get("zymc") + " 学号:" + (String) session.get("xh") + " 一卡通号:" + (String) session.get("userId") + " 姓名:" + (String) session.get("stuName"); Paragraph context = new Paragraph(contextString); // 正文格式对齐方式 context.setAlignment(Element.ALIGN_CENTER); context.setFont(contextFont); // 与上一段落（标题）的行距 context.setSpacingBefore(10); // 设置第一行空的列数（缩进） // context.setFirstLineIndent(20); doc.add(context); /** 第三行（表格） */ Cell[] cellHeaders = new Cell[11]; cellHeaders[0] = new Cell(new Phrase("序号", contextFont)); cellHeaders[1] = new Cell(new Phrase("课程名称", contextFont)); cellHeaders[2] = new Cell(new Phrase("教师", contextFont)); cellHeaders[3] = new Cell(new Phrase("学分", contextFont)); cellHeaders[4] = new Cell(new Phrase("上课周次", contextFont)); cellHeaders[5] = new Cell(new Phrase(" ", contextFont)); cellHeaders[5].setColspan(2); cellHeaders[6] = new Cell(new Phrase("星期一", contextFont)); cellHeaders[7] = new Cell(new Phrase("星期二", contextFont)); cellHeaders[8] = new Cell(new Phrase("星期三", contextFont)); cellHeaders[9] = new Cell(new Phrase("星期四", contextFont)); cellHeaders[10] = new Cell(new Phrase("星期五", contextFont)); for (int i = 0; i < 11; i++) { /** 居中显示 */ cellHeaders[i].setHorizontalAlignment(Element.ALIGN_CENTER); /** 纵向居中显示 */ cellHeaders[i].setVerticalAlignment(Element.ALIGN_MIDDLE); table.addCell(cellHeaders[i]); } /** 向表格填充数据 */ for (int i = 0; i < 15; i++) { /** 第0列 */ Cell cell0 = new Cell( new Phrase(String.valueOf(i + 1), contextFont)); cell0.setHorizontalAlignment(Element.ALIGN_CENTER); cell0.setVerticalAlignment(Element.ALIGN_MIDDLE); table.addCell(cell0); /** 第1-4列 */ Cell[] cell1_4 = new Cell[4]; if (i < leftList.size()) { cell1_4[0] = new Cell(new Phrase(str_changenbsp(leftList.get(i) .getKcmc()), contextFont)); cell1_4[1] = new Cell(new Phrase(str_changenbsp(leftList.get(i) .getJsxm()), contextFont)); cell1_4[2] = new Cell(new Phrase(str_changenbsp(leftList.get(i) .getXf()), contextFont)); cell1_4[3] = new Cell(new Phrase(str_changenbsp(leftList.get(i) .getJszc()), contextFont)); } for (int n = 0; n < cell1_4.length; n++) { cell1_4[n].setHorizontalAlignment(Element.ALIGN_CENTER); cell1_4[n].setVerticalAlignment(Element.ALIGN_MIDDLE); table.addCell(cell1_4[n]); } /** 第5列 */ Cell cell5 = null; if (i == 0) { cell5 = new Cell(new Phrase("上午", contextFont)); cell5.setRowspan(5); } if (i == 5) { cell5 = new Cell(new Phrase("下午", contextFont)); cell5.setRowspan(5); } if (i == 10) { cell5 = new Cell(new Phrase("晚上", contextFont)); cell5.setRowspan(2); } if (i == 12) { cell5 = new Cell(new Phrase("周六", contextFont)); cell5.setColspan(2); } if (i == 13) { cell5 = new Cell(new Phrase("周日", contextFont)); cell5.setColspan(2); } if (i == 14) { cell5 = new Cell(new Phrase("备注", contextFont)); cell5.setColspan(2); } if (cell5 != null) { cell5.setHorizontalAlignment(Element.ALIGN_CENTER); cell5.setVerticalAlignment(Element.ALIGN_MIDDLE); table.addCell(cell5); } /** 第6列 */ if (i < 12) { Cell cell2 = new Cell(new Phrase(String.valueOf(i + 1), contextFont)); cell2.setHorizontalAlignment(Element.ALIGN_CENTER); cell2.setVerticalAlignment(Element.ALIGN_MIDDLE); table.addCell(cell2); } /** 第7-11列 */ if (i == 0 || i == 5 || i == 10) { Cell[] cell7_11 = new Cell[5]; for (int n = 0; n < 5; n++) { cell7_11[n] = new Cell(new Phrase( str_changebr(stuCurriculumArray[i + n]), contextFont)); cell7_11[n].setHorizontalAlignment(Element.ALIGN_CENTER); cell7_11[n].setVerticalAlignment(Element.ALIGN_MIDDLE); if (i == 0 || i == 5) { cell7_11[n].setRowspan(5); } else { cell7_11[n].setRowspan(2); } table.addCell(cell7_11[n]); } } Cell cell7 = null; if (i == 12) { cell7 = new Cell(new Phrase( str_changebr(stuCurriculumArray[15]), contextFont)); } if (i == 13) { cell7 = new Cell(new Phrase( str_changebr(stuCurriculumArray[16]), contextFont)); } if (i == 14) { cell7 = new Cell(new Phrase( str_changebr(stuCurriculumArray[17]), contextFont)); } if (cell7 != null) { cell7.setColspan(5); cell7.setHorizontalAlignment(Element.ALIGN_CENTER); cell7.setVerticalAlignment(Element.ALIGN_MIDDLE); table.addCell(cell7); } } doc.add(table); doc.close(); // 得到输入流 ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray()); baos.close(); return bais; } public String str_changenbsp(String str) { if (str != null) { return str.replaceAll(" ", ""); } else { return ""; } } public String str_changebr(String str) { if (str != null) { return str.replaceAll(" ", "\n"); } else { return ""; } }}
这里在使用时经常会出现这个错误：
当出现这个错误的时候：首先我们先去检查：