如何运用Java组件itext生成pdf
Controller层（param为数据）
byte[] bytes = PdfUtils.createPdf(param);
ByteArrayInputStream inStream = new ByteArrayInputStream(bytes);
// 设置输出的格式
response.setContentType("bin");
response.setHeader("content-disposition", "attachment;filename="+ URLEncoder.encode(itemName+"（评审意见）.pdf", "UTF-8"));
// 循环取出流中的数据
byte[] b = new byte[2048];
int len;
while ((len = inStream.read(b)) > 0)
response.getOutputStream().write(b, 0, len);
inStream.close();
Service层（param为数据）
public static byte[] createPdf(Map<String,Object> param) {
byte[] result= null;
ByteArrayOutputStream baos = null;
//支流程评审信息汇总
List<CmplncBranchRvwInfoDTO> branchRvwInfos = (List<CmplncBranchRvwInfoDTO>) param.get("branchRvwInfos");
//主流程评审信息汇总
List<CmplncMainRvwInfoDTO> mainRvwInfos = (List<CmplncMainRvwInfoDTO>) param.get("mainRvwInfos");
//主评审信息
CmplncRvwFormDTO rvwFormDTO = (CmplncRvwFormDTO) param.get("rvwFormDTO");
//附件列表
List<FileInfoDTO> fileList = (List<FileInfoDTO>) param.get("fileList");
//专业公司
String legalEntityDeptDesc = (String) param.get("legalEntityDeptDesc");
String legalEntitySonDeptDesc = (String) param.get("legalEntitySonDeptDesc");
//设置页边距
Document doc = new Document(PageSize.A4, 20, 20, 60, 20);
try {
baos = new ByteArrayOutputStream();//构建字节输出流
PdfWriter writer = PdfWriter.getInstance(doc,baos);
//页眉页脚字体
BaseFont bf = null;
BaseFont bFont = null;
try {
bFont = BaseFont.createFont(BaseFont.HELVETICA, BaseFont.WINANSI, BaseFont.EMBEDDED);
bf = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H",BaseFont.NOT_EMBEDDED);
} catch (Exception e) {
e.printStackTrace();
}
Font footerFont = new Font(bFont, 10, Font.NORMAL);
Font title = new Font(bf,15,Font.BOLD);
Font content = new Font(bf,9,Font.NORMAL);
Font chinese = new Font(bf, 10, Font.BOLD);
/**
* HeaderFooter的第2个参数为非false时代表打印页码
* 页眉页脚中也可以加入图片，并非只能是文字
*/
HeaderFooter header=new HeaderFooter(new Phrase("法律合规评审系统",title),false);
//设置是否有边框等
header.setBorder(Rectangle.NO_BORDER);
header.setAlignment(1);
doc.setHeader(header);
HeaderFooter footer=new HeaderFooter(new Phrase("-",footerFont),new Phrase("-",footerFont));
/**
* 0左 1中 2右
*/
footer.setAlignment(1);
footer.setBorder(Rectangle.NO_BORDER);
doc.setFooter(footer);
doc.open();
//doc.add(new Paragraph("评审意见:",chinese));
//7列
PdfPTable table = new PdfPTable(7);
PdfPCell cell;
table.addCell(new Paragraph("评审项目编号",chinese));
table.addCell(new Paragraph(rvwFormDTO.getRvwItemCode(),content));
cell = new PdfPCell(new Paragraph("评审项目类型",chinese));
cell.setColspan(2);
table.addCell(cell);
String rvwItemParentType = (String) param.get("rvwItemParentType");
String rvwItemType = (String) param.get("rvwItemType");
String rvwItemTwoType = (String) param.get("rvwItemTwoType");
cell = new PdfPCell(new Paragraph(rvwItemParentType+"/"+rvwItemType+"/"+rvwItemTwoType,content));
cell.setColspan(3);
table.addCell(cell);
table.addCell(new Paragraph("申请人姓名",chinese));
table.addCell(new Paragraph(rvwFormDTO.getApplicantName(),content));
cell = new PdfPCell(new Paragraph("申请人所在部门",chinese));
cell.setColspan(2);
table.addCell(cell);
cell = new PdfPCell(new Paragraph(rvwFormDTO.getAplcntDeptName(),content));
cell.setColspan(3);
table.addCell(cell);
table.addCell(new Paragraph("录入人姓名",chinese));
table.addCell(new Paragraph(rvwFormDTO.getRecordName(),content));
cell = new PdfPCell(new Paragraph("项目涉及金额",chinese));
cell.setColspan(2);
table.addCell(cell);
table.addCell(new Paragraph(String.valueOf(rvwFormDTO.getInvolveAmount()==null?0:rvwFormDTO.getInvolveAmount()),content));
table.addCell(new Paragraph("币种",chinese));
String involveAmountType = (String) param.get("involveAmountType");
table.addCell(new Paragraph(involveAmountType,content));
table.addCell(new Paragraph("专业公司",chinese));
cell = new PdfPCell(new Paragraph(legalEntityDeptDesc+"->"+legalEntitySonDeptDesc,content));
cell.setColspan(6);
table.addCell(cell);
table.addCell(new Paragraph("项目名称",chinese));
cell = new PdfPCell(new Paragraph(rvwFormDTO.getItemName(),content));
cell.setColspan(6);
table.addCell(cell);
table.addCell(new Paragraph("项目概述",chinese));
cell = new PdfPCell(new Paragraph(rvwFormDTO.getItemOverview(),content));
cell.setColspan(6);
table.addCell(cell);
table.addCell(new Paragraph("评审需求",chinese));
cell = new PdfPCell(new Paragraph(rvwFormDTO.getRvwDemand(),content));
cell.setColspan(6);
table.addCell(cell);
table.addCell(new Paragraph("申请人自我评估",chinese));
cell = new PdfPCell(new Paragraph(rvwFormDTO.getApplicantSelfAssmnt(),content));
cell.setColspan(6);
table.addCell(cell);
/* table.addCell(new Paragraph("同步抄送",chinese));
cell = new PdfPCell(new Paragraph(rvwFormDTO.getSyncsenderNames(),content));
cell.setColspan(6);
table.addCell(cell);*/
int infoNum = 0;
if(fileList.size() > 0){
//附件信息
cell = new PdfPCell(new Paragraph("附件信息",chinese));
cell.setUseAscender(true);
cell.setHorizontalAlignment(Element.ALIGN_CENTER); //水平居中
cell.setVerticalAlignment(Element.ALIGN_MIDDLE); //垂直居中
cell.setRowspan(fileList.size()+1);
table.addCell(cell);
//序号
cell = new PdfPCell(new Paragraph("序号",chinese));
cell.setUseAscender(true);
cell.setHorizontalAlignment(Element.ALIGN_CENTER); //水平居中
cell.setVerticalAlignment(Element.ALIGN_MIDDLE); //垂直居中
table.addCell(cell);
//附件名称
cell = new PdfPCell(new Paragraph("附件名称",chinese));
cell.setUseAscender(true);
cell.setHorizontalAlignment(Element.ALIGN_CENTER); //水平居中
cell.setVerticalAlignment(Element.ALIGN_MIDDLE); //垂直居中
table.addCell(cell);
//上传时间
cell = new PdfPCell(new Paragraph("上传时间",chinese));
cell.setUseAscender(true);
cell.setHorizontalAlignment(Element.ALIGN_CENTER); //水平居中
cell.setVerticalAlignment(Element.ALIGN_MIDDLE); //垂直居中
table.addCell(cell);
//上传人
cell = new PdfPCell(new Paragraph("上传人",chinese));
cell.setUseAscender(true);
cell.setHorizontalAlignment(Element.ALIGN_CENTER); //水平居中
cell.setVerticalAlignment(Element.ALIGN_MIDDLE); //垂直居中
table.addCell(cell);
//附件类型
cell = new PdfPCell(new Paragraph("附件类型",chinese));
cell.setUseAscender(true);
cell.setHorizontalAlignment(Element.ALIGN_CENTER); //水平居中
cell.setVerticalAlignment(Element.ALIGN_MIDDLE); //垂直居中
table.addCell(cell);
//法律合规评审
cell = new PdfPCell(new Paragraph("法律合规评审",chinese));
cell.setUseAscender(true);
cell.setHorizontalAlignment(Element.ALIGN_CENTER); //水平居中
cell.setVerticalAlignment(Element.ALIGN_MIDDLE); //垂直居中
table.addCell(cell);
for (FileInfoDTO file : fileList) {
infoNum++;
//序号
cell = new PdfPCell(new Paragraph(infoNum+"",content));
cell.setUseAscender(true);
cell.setHorizontalAlignment(Element.ALIGN_CENTER); //水平居中
cell.setVerticalAlignment(Element.ALIGN_MIDDLE); //垂直居中
table.addCell(cell);
//附件名称
cell = new PdfPCell(new Paragraph(file.getFileName(),content));
cell.setUseAscender(true);
cell.setHorizontalAlignment(Element.ALIGN_CENTER); //水平居中
cell.setVerticalAlignment(Element.ALIGN_MIDDLE); //垂直居中
table.addCell(cell);
//上传时间
cell = new PdfPCell(new Paragraph(file.getUploadTimeFormat(),content));
cell.setUseAscender(true);
cell.setHorizontalAlignment(Element.ALIGN_CENTER); //水平居中
cell.setVerticalAlignment(Element.ALIGN_MIDDLE); //垂直居中
table.addCell(cell);
//上传人
cell = new PdfPCell(new Paragraph(file.getUploadName(),content));
cell.setUseAscender(true);
cell.setHorizontalAlignment(Element.ALIGN_CENTER); //水平居中
cell.setVerticalAlignment(Element.ALIGN_MIDDLE); //垂直居中
table.addCell(cell);
//附件类型
String fileType;
if("1".equals(file.getFileType())){
fileType = "合同文件";
}else if("99".equals(file.getFileType())){
fileType = "支持文档";
}else{
fileType = "";
}
cell = new PdfPCell(new Paragraph(fileType,content));
cell.setUseAscender(true);
cell.setHorizontalAlignment(Element.ALIGN_CENTER); //水平居中
cell.setVerticalAlignment(Element.ALIGN_MIDDLE); //垂直居中
table.addCell(cell);
//法律合规评审
String typeRvwStatus;
if("1".equals(file.getTypeRvwStatus())){
typeRvwStatus = "经审查附件无重大法律合规问题";
}else if("2".equals(file.getTypeRvwStatus())){
typeRvwStatus = "退回修改";
}else{
typeRvwStatus = "";
}
cell = new PdfPCell(new Paragraph(typeRvwStatus,content));
cell.setUseAscender(true);
cell.setHorizontalAlignment(Element.ALIGN_CENTER); //水平居中
cell.setVerticalAlignment(Element.ALIGN_MIDDLE); //垂直居中
table.addCell(cell);
}
}else{
//附件信息
cell = new PdfPCell(new Paragraph("附件信息",chinese));
table.addCell(cell);
cell = new PdfPCell(new Paragraph("没有附件",content));
cell.setColspan(6);
table.addCell(cell);
}
cell = new PdfPCell(new Paragraph("评审意见",chinese));
cell.setRowspan(mainRvwInfos.size()+branchRvwInfos.size());
//居中
cell.setUseAscender(true);
cell.setHorizontalAlignment(Element.ALIGN_CENTER); //水平居中
cell.setVerticalAlignment(Element.ALIGN_MIDDLE); //垂直居中
table.addCell(cell);
if(mainRvwInfos.size()>0){
cell = new PdfPCell(new Paragraph("主评审意见",chinese));
cell.setRowspan(mainRvwInfos.size());
//居中
cell.setUseAscender(true);
cell.setHorizontalAlignment(Element.ALIGN_CENTER); //水平居中
cell.setVerticalAlignment(Element.ALIGN_MIDDLE); //垂直居中
table.addCell(cell);
infoNum = 0;
for (CmplncMainRvwInfoDTO dto : mainRvwInfos) {
infoNum++;
//序号
cell = new PdfPCell(new Paragraph(infoNum+"",content));
cell.setUseAscender(true);
cell.setHorizontalAlignment(Element.ALIGN_CENTER); //水平居中
cell.setVerticalAlignment(Element.ALIGN_MIDDLE); //垂直居中
table.addCell(cell);
//评审意见
PdfPTable branchRvwInfosTable = new PdfPTable(1);
cell = new PdfPCell(new Paragraph(delHTMLTag(dto.getRvwOpinion()),content));
cell.disableBorderSide(2);
branchRvwInfosTable.addCell(cell);
//评审人和评审时间
cell = new PdfPCell(new Paragraph(dto.getRvwUmName()+"/"+getStringDate(dto.getRvwTime()),content));
cell.setHorizontalAlignment(Element.ALIGN_RIGHT);
cell.disableBorderSide(1);
cell.setPaddingTop(5);
branchRvwInfosTable.addCell(cell);
PdfPCell branchRvwInfosCell = new PdfPCell(branchRvwInfosTable);
branchRvwInfosCell.setColspan(4);
table.addCell(branchRvwInfosCell);
}
doc.add(table);
}
if(branchRvwInfos.size()>0){
cell = new PdfPCell(new Paragraph("支评审意见",chinese));
cell.setRowspan(branchRvwInfos.size());
//居中
cell.setUseAscender(true);
cell.setHorizontalAlignment(Element.ALIGN_CENTER); //水平居中
cell.setVerticalAlignment(Element.ALIGN_MIDDLE); //垂直居中
table.addCell(cell);
infoNum = 0;
for (CmplncBranchRvwInfoDTO dto : branchRvwInfos) {
infoNum++;
//序号
cell = new PdfPCell(new Paragraph(infoNum+"",content));
cell.setUseAscender(true);
cell.setHorizontalAlignment(Element.ALIGN_CENTER); //水平居中
cell.setVerticalAlignment(Element.ALIGN_MIDDLE); //垂直居中
table.addCell(cell);
//评审意见
PdfPTable branchRvwInfosTable = new PdfPTable(1);
cell = new PdfPCell(new Paragraph(delHTMLTag(dto.getRvwOpinion()),content));
cell.disableBorderSide(2);
branchRvwInfosTable.addCell(cell);
//评审人和评审时间
cell = new PdfPCell(new Paragraph(dto.getRvwUmName()+"/"+getStringDate(dto.getRvwTime()),content));
cell.setHorizontalAlignment(Element.ALIGN_RIGHT);
cell.disableBorderSide(1);//隐藏上边框
cell.setPaddingTop(5);
branchRvwInfosTable.addCell(cell);
PdfPCell branchRvwInfosCell = new PdfPCell(branchRvwInfosTable);
branchRvwInfosCell.setColspan(4);
table.addCell(branchRvwInfosCell);
}
doc.add(table);
}
if(doc != null){
doc.close();
}
result =baos.toByteArray();
} catch (DocumentException e) {
e.printStackTrace();
}finally{
if(baos != null){
try {
baos.close();
} catch (IOException e) {
log.error("PDF异常", e);
}
}
}
return result;
}
工具
/**
* 去掉HTML标签
* @param htmlStr
* @return
*/
public static String delHTMLTag(String htmlStr){
if (htmlStr!=null){
String regEx_script="<script[^>]*?>[\\s\\S]*?<\\/script>"; //定义script的正则表达式
String regEx_style="<style[^>]*?>[\\s\\S]*?<\\/style>"; //定义style的正则表达式
String regEx_html="<[^>]+>"; //定义HTML标签的正则表达式
Pattern p_script=Pattern.compile(regEx_script,Pattern.CASE_INSENSITIVE);
Matcher m_script=p_script.matcher(htmlStr);
htmlStr=m_script.replaceAll(""); //过滤script标签
Pattern p_style=Pattern.compile(regEx_style,Pattern.CASE_INSENSITIVE);
Matcher m_style=p_style.matcher(htmlStr);
htmlStr=m_style.replaceAll(""); //过滤style标签
Pattern p_html=Pattern.compile(regEx_html,Pattern.CASE_INSENSITIVE);
Matcher m_html=p_html.matcher(htmlStr);
htmlStr=m_html.replaceAll(""); //过滤html标签
Pattern p_enter = Pattern.compile("\\s*|\t|\r|\n");
Matcher m_enter = p_enter.matcher(htmlStr);
htmlStr = m_enter.replaceAll("");
}
return htmlStr.trim().replaceAll(" ", ""); //返回文本字符串
}
/**
* @return返回字符串格式 yyyy-MM-dd HH:mm:ss
*/
public static String getStringDate(Date date) {
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String dateString = formatter.format(date);
return dateString;
}
引入需要的类，如下图：
这些都是生成pdf文嘉需要的，设置样式：
给你几句简单的实例，以下代码均在springmvc框架的action层写。
import com.itextpdf.text.*;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfPCell;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfWriter;
response.setContentType("application/pdf");
Document document = new Document(PageSize.A4);
PdfWriter.getInstance(document, response.getOutputStream());
document.addTitle("文档名称");
document.open();
//字体
BaseFont bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H",BaseFont.NOT_EMBEDDED);
Paragraph titleParagraph = new Paragraph("xx报告",new Font(bfChinese, 20, Font.BOLD));
titleParagraph.setAlignment(1);
document.add(titleParagraph);
document.close();
2016-03-20 · 百度知道合伙人官方认证企业
育知同创教育
Document document = new Document();
2.建立一个书写器(Writer)与document对象关联，通过书写器(Writer)可以将文档写入到磁盘中。
PDFWriter.getInstance(document, new FileOutputStream("Helloworld.PDF"));
3.打开文档。
document.open();
4.
向文档中添加内容。
document.add(new Paragraph("Hello World"));
5.
关闭文档。
document.close();
