整理文档，搜刮出一个Spring 实现excel及pdf导出表格的代码，稍微整理精简一下做下分享。

excel 导出：

package light.mvc.utils.excel; import java.util.Date; import java.util.List; import java.util.Map; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; 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.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.springframework.web.servlet.view.document.AbstractExcelView; import light.mvc.pageModel.sys.Log; import light.mvc.utils.Tools; public class ExcelView extends AbstractExcelView{ private HSSFSheet sheet; private HSSFCell cell; @Override protected void buildExcelDocument(Map<String, Object> model, HSSFWorkbook workbook, HttpServletRequest request, HttpServletResponse response) throws Exception { // TODO Auto-generated method stub Date date = new Date(); String filename = Tools.date2Str(date, "yyyyMMddHHmmss"); String title_content = (String) model.get("title_content"); response.setContentType("application/octet-stream"); response.setHeader("Content-Disposition", "attachment;filename="+filename+".xls"); sheet = workbook.createSheet(title_content); List<String> titles = (List<String>) model.get("titles"); int len = titles.size(); HSSFCellStyle headerStyle = workbook.createCellStyle(); //标题样式 headerStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER); headerStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); HSSFFont headerFont = workbook.createFont(); //标题字体 headerFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); headerFont.setFontHeightInPoints((short)11); headerStyle.setFont(headerFont); short width = 20,height=25*20; sheet.setDefaultColumnWidth(width); for(int i=0; i<len; i++){ //设置标题 String title = titles.get(i); cell = getCell(sheet, 0, i); cell.setCellStyle(headerStyle); setText(cell,title); } sheet.getRow(0).setHeight(height); HSSFCellStyle contentStyle = workbook.createCellStyle(); //内容样式 contentStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER); String type = (String) model.get("type"); if ("log".equals(type)){ List<Log> logList = (List<Log>) model.get("list"); logExcel(logList, contentStyle); } } /** * * @Title: logExcel * @Description: 日志导出 * @param @param logList * @param @param contentStyle * @return void * @throws */ public void logExcel(List<Log> logList, HSSFCellStyle contentStyle){ int logCount = logList.size(); if (logList != null && logCount > 0){ for(int i=0; i<logCount; i++){ Log log = logList.get(i); String loginname = log.getLoginname(); cell = getCell(sheet, i+1, 0); cell.setCellStyle(contentStyle); setText(cell,loginname); String username = log.getName(); cell = getCell(sheet, i+1, 1); cell.setCellStyle(contentStyle); setText(cell,username); String IP = log.getIp(); cell = getCell(sheet, i+1, 2); cell.setCellStyle(contentStyle); setText(cell,IP); String organizationName = log.getOrganizationName(); cell = getCell(sheet, i+1, 3); cell.setCellStyle(contentStyle); setText(cell,organizationName); String usertype = log.getUsertype()==0 ? "管理员" : "员工"; cell = getCell(sheet, i+1, 4); cell.setCellStyle(contentStyle); setText(cell,usertype); String msg = log.getMsg(); cell = getCell(sheet, i+1, 5); cell.setCellStyle(contentStyle); setText(cell,msg); Date lastLogin = log.getCreatedatetime()!=null ? log.getCreatedatetime() : null; cell = getCell(sheet, i+1, 6); cell.setCellStyle(contentStyle); setText(cell,Tools.date2Str(lastLogin)); } } } }

pdf导出：

重写spring调用itext

package light.mvc.utils.pdf; import java.io.ByteArrayOutputStream; import java.io.OutputStream; import java.util.Map; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.web.servlet.view.AbstractView; import com.itextpdf.text.Document; import com.itextpdf.text.DocumentException; import com.itextpdf.text.PageSize; import com.itextpdf.text.pdf.PdfWriter; /** * 这里就全部复制spring 的，然后引入的东西改成第5版的就行了 代码 几乎不变，唯一变的是引用路径~。 * * */ public abstract class AbstractIText5PdfView extends AbstractView { public AbstractIText5PdfView() { setContentType("application/pdf"); } @Override protected boolean generatesDownloadContent() { return true; } @Override protected final void renderMergedOutputModel(Map<String, Object> model, HttpServletRequest request, HttpServletResponse response) throws Exception { // 获得流 ByteArrayOutputStream baos = createTemporaryOutputStream(); Document document = newDocument(); PdfWriter writer = newWriter(document, baos); prepareWriter(model, writer, request); buildPdfMetadata(model, document, request); document.open(); buildPdfDocument(model, document, writer, request, response); document.close(); writeToResponse(response, baos); } protected Document newDocument() { return new Document(PageSize.A4); } protected PdfWriter newWriter(Document document, OutputStream os) throws DocumentException { return PdfWriter.getInstance(document, os); } protected void prepareWriter(Map<String, Object> model, PdfWriter writer, HttpServletRequest request) throws DocumentException { writer.setViewerPreferences(getViewerPreferences()); } protected int getViewerPreferences() { return PdfWriter.ALLOW_PRINTING | PdfWriter.PageLayoutSinglePage; } protected void buildPdfMetadata(Map<String, Object> model, Document document, HttpServletRequest request) { } protected abstract void buildPdfDocument(Map<String, Object> model, Document document, PdfWriter writer, HttpServletRequest request, HttpServletResponse response) throws Exception; }

pdf 公共类

package light.mvc.utils.pdf; import java.io.IOException; import java.util.ArrayList; import java.util.List; import java.util.Map; import com.itextpdf.text.Chunk; import com.itextpdf.text.DocumentException; import com.itextpdf.text.Font; import com.itextpdf.text.Paragraph; import com.itextpdf.text.pdf.BaseFont; /** * @ClassName: PDFUtil * @Description: * @author liuyajun * @date 2017年3月2日 下午1:21:21 * */ public class PDFUtil { // 对参数的封装形式比如{name} public static final String BEGIN = "{"; public static final String END = "}"; // 换行形式{#} public static final String NEW_LINE = "#"; // 默认的行间距、首行距离等，自己添加 public static final float DEFAULT_LEADING = 20; public static final float DEFAULT_LINE_INDENT = 30; // 基本字体和样式 public static BaseFont bfChinese; public static Font fontChinese; public static Font UNDER_LINE = null; static{ try { // SIMKAI.TTF 默认系统语言，这里没使用第三方语言包 bfChinese = BaseFont.createFont("D:/home/java/contract/web/fonts/simsun.ttf",BaseFont.IDENTITY_H,BaseFont.NOT_EMBEDDED); //bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED); fontChinese = new Font(bfChinese, 12, Font.NORMAL); UNDER_LINE = new Font(bfChinese, 14,Font.UNDERLINE); } catch (DocumentException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } // 默认样式 public static Paragraph getParagraph(String context){ return getParagraph(context,fontChinese); } public static Paragraph getParagraph(Chunk chunk){ return new Paragraph(chunk); } // 指定字体样式 public static Paragraph getParagraph(String context,Font font){ return new Paragraph(context,font); } // 获得新行,首行缩进,和行间距 public static Paragraph getNewParagraph(String context,float fixedLeading,float firstLineIndent){ Paragraph p = getParagraph(context); p.setLeading(fixedLeading); p.setFirstLineIndent(firstLineIndent); return p; } public static Paragraph getParagraph(String content , Font font , float fixedLeading , int alignment){ Paragraph p = getParagraph(content); p.setFont(font); p.setLeading(fixedLeading); p.setAlignment(alignment); return p; } // 默认段落样式 public static Paragraph getDefaultParagraph(String context){ Paragraph p = getParagraph(context); // 默认行间距 p.setLeading(DEFAULT_LEADING); // 默认首行空隙 p.setFirstLineIndent(DEFAULT_LINE_INDENT); return p; } // 将参数和字符串内容组合成集合 public static List<Paragraph> createParagraphs(String context ,Map<String,Object> map){ int index = 0; List<Paragraph> list = new ArrayList<Paragraph>(); Paragraph p = getDefaultParagraph(null); while((index = context.indexOf(BEGIN)) > -1){ String text = context.substring(0,index); context = context.substring(index, context.length()); index = context.indexOf(END); String param = null; if(index > 0){ param = context.substring(BEGIN.length(),index); } p.add(text); if(!NEW_LINE.equals(param)){ Object value = map.get(param); if(value != null){ p.add(new Chunk(value.toString(),UNDER_LINE)); }else{ p.add(new Chunk("")); } }else{ list.add(p); p = getDefaultParagraph(null); p.setSpacingBefore(0); } context = context.substring(index+END.length(),context.length()); } list.add(p); list.add(getParagraph(context)); return list; } }

生成pdf

package light.mvc.utils.pdf; import java.util.Date; import java.util.List; import java.util.Map; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import com.itextpdf.text.Chunk; import com.itextpdf.text.Document; import com.itextpdf.text.Font; import com.itextpdf.text.Paragraph; import com.itextpdf.text.pdf.PdfPTable; import com.itextpdf.text.pdf.PdfWriter; import light.mvc.pageModel.sys.Log; import light.mvc.utils.Tools; /** * @ClassName: LogPdfView * @Description: * @author liuyajun * @date 2017年3月2日 上午11:18:44 * */ public class PdfView extends AbstractIText5PdfView{ @Override protected void buildPdfDocument(Map<String, Object> model, Document document, PdfWriter writer, HttpServletRequest request, HttpServletResponse response) throws Exception { try{ document.open(); // 标题居中 String title_content = (String) model.get("title_content"); Paragraph title = PDFUtil.getParagraph( new Chunk(title_content,new Font(PDFUtil.bfChinese,16,Font.BOLD))); title.setAlignment(Paragraph.ALIGN_CENTER); document.add(title); // 表格标题 List<String> titles = (List<String>) model.get("titles"); int len = titles.size(); PdfPTable table = new PdfPTable(len); table.setSpacingBefore(20); table.setSpacingAfter(30); for(int i=0; i<len; i++){ //设置标题 String str = titles.get(i); table.addCell(PDFUtil.getParagraph(str)); } // 表格数据 String type = (String) model.get("type"); if ("log".equals(type)){ List<Log> logList = (List<Log>) model.get("list"); table = logPdf(table, logList); } document.add(table); // 关闭 document.close(); }catch (Exception e) { e.printStackTrace(); } } /** * * @Title: logPdf * @Description: 日志导出 * @param @param table * @param @param logList * @param @return * @return PdfPTable * @throws */ public PdfPTable logPdf(PdfPTable table, List<Log> logList){ int logCount = logList.size(); if (logList != null && logCount > 0){ for(int i=0; i<logCount; i++){ Log log = logList.get(i); String loginname = log.getLoginname(); table.addCell(PDFUtil.getParagraph(loginname)); String username = log.getName(); table.addCell(PDFUtil.getParagraph(username)); String IP = log.getIp(); table.addCell(PDFUtil.getParagraph(IP)); String organizationName = log.getOrganizationName(); table.addCell(PDFUtil.getParagraph(organizationName)); String usertype = log.getUsertype()==0 ? "管理员" : "员工"; table.addCell(PDFUtil.getParagraph(usertype)); String msg = log.getMsg(); table.addCell(PDFUtil.getParagraph(msg)); Date lastLogin = log.getCreatedatetime()!=null ? log.getCreatedatetime() : null; table.addCell(PDFUtil.getParagraph(Tools.date2Str(lastLogin))); } } return table; } }

调用

/** * 导出用户信息到excel/pdf * @return */ @RequestMapping("/download") public ModelAndView export2Excel(HttpServletRequest request, Log log){ SessionInfo sessionInfo = (SessionInfo) request.getSession().getAttribute(GlobalConstant.SESSION_INFO); if (!"admin".equals(sessionInfo.getLoginname())){ log.setUsertype(1); log.setOrganizationId(sessionInfo.getOrganizationid()); } if ("1".equals(sessionInfo.getUsertype())){ log.setLoginname(sessionInfo.getLoginname()); } PageFilter ph = new PageFilter(); ph.setSort("createdatetime"); ph.setOrder("desc"); List<Log> list = logService.dataGrid(log, ph); Map<String,Object> dataMap = new HashMap<String,Object>(); List<String> titles = new ArrayList<String>(); titles.add("登录名"); titles.add("姓名"); titles.add("IP地址"); titles.add("所属部门"); titles.add("用户类型"); titles.add("操作内容"); titles.add("操作时间"); dataMap.put("titles", titles); dataMap.put("list", list); dataMap.put("title_content", "日志"); dataMap.put("type", "log"); String str = request.getParameter("str"); ModelAndView mv = null; if ("excel".equals(str)){ ExcelView excel = new ExcelView(); mv = new ModelAndView(excel,dataMap); } else if("pdf".equals(str)){ PdfView pdf = new PdfView(); mv = new ModelAndView(pdf,dataMap); } insertlog(request,"下载"+str+"文件",2); return mv; }

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