Struts2利用iText导出word文档（包含表格）以提供下载

      在公司实习期间，带我的老师让我实现一功能——在显示课表的页面上上点击“导出文件“时能以word文档形式下载课表。将课表导出到excel里的功能他们已经实现了，用的是Struts2+poi实现的。poi对excel表格操作能力很强，但是对word文档的支持一直没有更新，操作能力有限。

      iText是著名的开放源码的站点sourceforge一个项目，是用于生成PDF文档的一个java类库。通过iText不仅可以生成PDF或rtf 的文档，而且可以将XML、Html文件转化为PDF文件。

      使用了iText的iText-2.1.7.jar和iText-rtf-2.1.7.jar（可以到官网上下载各个版本）,借助这两个jar可生成rtf格式的文档,而指定文件后缀名时指定为.doc即为word文档。

 

        点击页面上”导出课表“下载得到的word文档效果图：

       struts.xml里的配置如下：

<!-- 保存为word文件 -->
       <action name="studentCurriculumWord" class="studentCurriculumWordAction">
       	  <result name="success" type="stream"> 
              <param name="contentType">application/vnd.ms-word</param> 
              <param name="contentDisposition">attachment;filename="studentCurriculum.doc"</param> 
              <param name="inputName">wordFile</param> 
          </result>
       </action>

        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word author:yyli Sep 15, 2010 */
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<String, Object> session = ActionContext.getContext().getSession();
		List<StudentCurriculum> leftList = (List<StudentCurriculum>) session
				.get("stuCurriculumleftList");
		String[] stuCurriculumArray = (String[]) session
				.get("stuCurriculumrightArray");
		float totalXf = 0;

		/** 创建Document对象（word文档） author:yyli Sep 15, 2010 */
		Document doc = new Document(PageSize.A4);
		/** 新建字节数组输出流 author:yyli Sep 15, 2010 */
		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 author:yyli Sep 15, 2010 */
		RtfWriter2.getInstance(doc, baos);
		doc.open();

		/** 标题字体 author:yyli Sep 15, 2010 */
		RtfFont titleFont = new RtfFont("仿宋_GB2312", 12, Font.NORMAL,
				Color.BLACK);
		/** 正文字体 author:yyli Sep 15, 2010 */
		RtfFont contextFont = new RtfFont("仿宋_GB2312", 9, Font.NORMAL,
				Color.BLACK);

		/** 表格设置 author:yyli Sep 15, 2010 */
		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 author:yyli Sep 15, 2010 */
		table.setWidths(withs);
		/** 表格所占页面宽度 author:yyli Sep 15, 2010 */
		table.setWidth(100);
		/** 居中显示 author:yyli Sep 15, 2010 */
		table.setAlignment(Element.ALIGN_CENTER);
		/** 自动填满 author:yyli Sep 15, 2010 */
		table.setAutoFillEmptyCells(true);

		/** 第一行（标题） author:yyli Sep 15, 2010 */
		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） author:yyli Sep 15, 2010 */
		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） author:yyli Sep 15, 2010 */
		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 author:yyli Sep 15, 2010 */
			cellHeaders[i].setHorizontalAlignment(Element.ALIGN_CENTER);
			/** 纵向居中显示 author:yyli Sep 15, 2010 */
			cellHeaders[i].setVerticalAlignment(Element.ALIGN_MIDDLE);
			table.addCell(cellHeaders[i]);
		}
		/** 向表格填充数据 author:yyli Sep 15, 2010 */
		for (int i = 0; i < 15; i++) {
			/** 第0列 author:yyli Sep 15, 2010 */
			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 author:yyli Sep 15, 2010 */
			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 author:yyli Sep 15, 2010 */
			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 author:yyli Sep 15, 2010 */
			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 author:yyli Sep 15, 2010 */
			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("&nbsp;", "");
		} else {
			return "";
		}
	}

	public String str_changebr(String str) {
		if (str != null) {
			return str.replaceAll("<br>", "\n");
		} else {
			return "";
		}
	}
}

 

 

 

 

评论

2 楼 wadr52013145 2011-03-22  

jun19910822 写道

请问在struts2的action中返回后，在jsp中如何调用呢？？

添加个链接<a href="studentCurriculumExcel.action">导出课表</a>

1 楼 jun19910822 2011-03-14  

请问在struts2的action中返回后，在jsp中如何调用呢？？