java在pdf中生成表格的方法

package com.zcr.until;public class User { private String name; private int age ; private float height; private String adress; private String sex; private String jj;  public String getJj() { return jj; } public void setJj(String jj) { this.jj = jj; } public User() {  } public User(String name,int age,float height,String adress,String sex,String jj) { this.name = name; this.age = age; this.height = height; this.adress = adress; this.sex = sex; this.jj = jj; }  public String getAdress() { return adress; } public void setAdress(String adress) { this.adress = adress; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; }   public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public float getHeight() { return height; } public void setHeight(float height) { this.height = height; } }

package com.zcr.until;import java.io.BufferedInputStream;import java.io.File;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStream;import java.util.Properties;public class GetFilePlace { /** * 读取文件，获取excel保存的根目录 * @return excel保存的根目录 */ public String getFilePath() { String dir = System.getProperty("user.dir"); //获得tomcat所在的工作路径   //获取到存储了文件存储位置的filedir.properties 文件路径 --->java Project的文件路径 String realDir = dir + File.separator + "src" + File.separator +"META-INF" + File.separator + "filedir.properties"; 　　　　 //Web project存储路径 /*String realDir = dir.substring(0, dir.length()-4) + File.separator +"webapps" + File.separator + "generateExcels"    + File.separator + "classes" + File.separator + "META-INF" + File.separator + "config" + File.separator + "filedir.properties"; */ return realDir; }  /** * 获取filePath路径【properities文件】中key对应的值， * @param filePath properities文件路径【包含properities文件】 * @param key 要查找的key值 * @return key对应的value */ public String GetValueByKey(String filePath, String key)  {  Properties pps = new Properties();  try {  InputStream in = new BufferedInputStream (new FileInputStream(filePath));   pps.load(in);  String value = pps.getProperty(key);  in.close();  return value;    }catch (IOException e) {  e.printStackTrace();  return null;  } }  /** * 查询properities文件中可以对应的存储地点 * @param key 查询主键 * @return key对应的存储地址 */ public String getFileDirFromProperties(String key) { return GetValueByKey(getFilePath(),key); }}

package com.zcr.service;import java.io.File;import java.text.SimpleDateFormat;import java.util.Calendar;public class GenerateFold{ /** * 查询当前生成的excel需要存在在哪个路径，如果存在则存储在相应的位置，否则生成改目录， 每天生成一个文件夹，文件夹的命名规则为 年月日的时间戳 * @param foldName 生成excel保存路径 * @return  现在的excel需要保存路径 */ public String getFold(String foldName) { SimpleDateFormat format = new SimpleDateFormat("yyyyMMdd");  String todayStr = format.format(Calendar.getInstance().getTime());  String foldPath = foldName + File.separator + todayStr;   File file = new File(foldPath);  if(!file.exists() && !file.isDirectory()) {  System.out.println("不存在");  file.mkdirs(); } else {  System.out.println("存在"); } return foldPath; }}

package com.zcr.until;import java.io.File;import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.UUID;/** * 生成文件名字 * @author zcr * */public class GenerateFileName{ /** * 根据文件类别生成文件的名字,文件的命名规则是:文件目录/生成时间-uuid（全球唯一编码）.文件类别 * @param fileDir 文件的存储路径 * @param fileType 文件的类别 * @return   文件的名字  */ public String generateFileName(String fileDir,String fileType) { String saveFileName = ""; SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHHmmssSS"); saveFileName += format.format(Calendar.getInstance().getTime());  UUID uuid = UUID.randomUUID(); //全球唯一编码  saveFileName += "-" + uuid.toString(); saveFileName += "." + fileType;  saveFileName = fileDir + File.separator + saveFileName;  return saveFileName; }}

package com.zcr.service;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.lang.reflect.InvocationTargetException;import java.lang.reflect.Method;import java.util.ArrayList;import java.util.List;import com.lowagie.text.Document;import com.lowagie.text.DocumentException;import com.lowagie.text.Element;import com.lowagie.text.Font;import com.lowagie.text.PageSize;import com.lowagie.text.Phrase;import com.lowagie.text.pdf.BaseFont;import com.lowagie.text.pdf.PdfPCell;import com.lowagie.text.pdf.PdfPTable;import com.lowagie.text.pdf.PdfWriter;import com.zcr.until.GenerateFileName;import com.zcr.until.GetFilePlace;import com.zcr.until.User;/** * 生成pdf * @author zcr *  */public class CreatePdf{ Document document = new Document();// 建立一个Document对象 private static Font headfont;// 设置字体大小 private static Font keyfont;// 设置字体大小 private static Font textfont;// 设置字体大小 static { //中文格式 BaseFont bfChinese; try {  // 设置中文显示  bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H",BaseFont.NOT_EMBEDDED);  headfont = new Font(bfChinese, 10, Font.BOLD);// 设置字体大小  keyfont = new Font(bfChinese, 8, Font.BOLD);// 设置字体大小  textfont = new Font(bfChinese, 8, Font.NORMAL);// 设置字体大小 } catch (Exception e) {  e.printStackTrace(); } }  /** * 文成文件 * @param file 待生成的文件名 */ public CreatePdf(File file) { document.setPageSize(PageSize.A4);// 设置页面大小 try {  PdfWriter.getInstance(document, new FileOutputStream(file));  document.open(); } catch (Exception e) {  e.printStackTrace(); } }  public CreatePdf() {  }  public void initFile(File file) { document.setPageSize(PageSize.A4);// 设置页面大小 try {  PdfWriter.getInstance(document, new FileOutputStream(file));  document.open(); } catch (Exception e) {  e.printStackTrace(); } }  int maxWidth = 520;  /** * 为表格添加一个内容 * @param value  值 * @param font  字体 * @param align  对齐方式 * @return  添加的文本框 */ public PdfPCell createCell(String value, Font font, int align) { PdfPCell cell = new PdfPCell(); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(align); cell.setPhrase(new Phrase(value, font)); return cell; }  /** * 为表格添加一个内容 * @param value  值 * @param font  字体 * @return  添加的文本框 */ public PdfPCell createCell(String value, Font font) { PdfPCell cell = new PdfPCell(); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(Element.ALIGN_CENTER); cell.setPhrase(new Phrase(value, font)); return cell; } /** * 为表格添加一个内容 * @param value  值 * @param font  字体 * @param align  对齐方式 * @param colspan 占多少列 * @return  添加的文本框 */ public PdfPCell createCell(String value, Font font, int align, int colspan) { PdfPCell cell = new PdfPCell(); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(align); cell.setColspan(colspan); cell.setPhrase(new Phrase(value, font)); return cell; }  /** * 为表格添加一个内容 * @param value  值 * @param font  字体 * @param align  对齐方式 * @param colspan 占多少列 * @param boderFlag 是否有有边框 * @return  添加的文本框 */ public PdfPCell createCell(String value, Font font, int align, int colspan,  boolean boderFlag) { PdfPCell cell = new PdfPCell(); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setHorizontalAlignment(align); cell.setColspan(colspan); cell.setPhrase(new Phrase(value, font)); cell.setPadding(3.0f); if (!boderFlag) {  cell.setBorder(0);  cell.setPaddingTop(15.0f);  cell.setPaddingBottom(8.0f); } return cell; } /** * 创建一个表格对象 * @param colNumber 表格的列数 * @return  生成的表格对象 */ public PdfPTable createTable(int colNumber) { PdfPTable table = new PdfPTable(colNumber); try {  table.setTotalWidth(maxWidth);  table.setLockedWidth(true);  table.setHorizontalAlignment(Element.ALIGN_CENTER);  table.getDefaultCell().setBorder(1); } catch (Exception e) {  e.printStackTrace(); } return table; } public PdfPTable createTable(float[] widths) { PdfPTable table = new PdfPTable(widths); try {  table.setTotalWidth(maxWidth);  table.setLockedWidth(true);  table.setHorizontalAlignment(Element.ALIGN_CENTER);  table.getDefaultCell().setBorder(1); } catch (Exception e) {  e.printStackTrace(); } return table; } public PdfPTable createBlankTable() { PdfPTable table = new PdfPTable(1); table.getDefaultCell().setBorder(0); table.addCell(createCell("", keyfont)); table.setSpacingAfter(20.0f); table.setSpacingBefore(20.0f); return table; } public <T> void generatePDF(String [] head,List<T> list,int colNum)  { Class classType = list.get(0).getClass();  // 创建一个只有5列的表格 PdfPTable table = createTable(colNum); // 添加备注,靠左，不显示边框 table.addCell(createCell("APP信息列表：", keyfont, Element.ALIGN_LEFT, colNum,false));  //设置表头 for(int i = 0 ; i < colNum ; i++) {  table.addCell(createCell(head[i], keyfont, Element.ALIGN_CENTER)); }   if(null != list && list.size() > 0) {  int size = list.size();  for(int i = 0 ; i < size ; i++)  {  T t = list.get(i);  for(int j = 0 ; j < colNum ; j ++)  {   //获得首字母   String firstLetter = head[j].substring(0,1).toUpperCase();       //获得get方法,getName,getAge等   String getMethodName = "get" + firstLetter + head[j].substring(1);      Method method;   try   {   //通过反射获得相应的get方法，用于获得相应的属性值   method = classType.getMethod(getMethodName, new Class[]{});   try   {    System.out.print(getMethodName +":" + method.invoke(t, new Class[]{}) +",");    //添加数据    table.addCell(createCell(method.invoke(t, new Class[]{}).toString(), textfont));   }   catch (IllegalArgumentException e)   {    e.printStackTrace();   }   catch (IllegalAccessException e)   {    e.printStackTrace();   }   catch (InvocationTargetException e)   {    e.printStackTrace();   }    }   catch (SecurityException e)   {   e.printStackTrace();   }   catch (NoSuchMethodException e)   {   e.printStackTrace();   }  }    System.out.println("");  } }  try {  //将表格添加到文档中  document.add(table); } catch (DocumentException e) {  e.printStackTrace(); }  //关闭流 document.close(); }   /** * 提供外界调用的接口，生成以head为表头，list为数据的pdf * @param head //数据表头 * @param list //数据 * @return //excel所在的路径 */ public <T> String generatePDFs(String [] head,List<T> list) { final String FilePath = "pdfPath"; String saveFilePathAndName = "";  //获得存储的根目录 String savePath = new GetFilePlace().getFileDirFromProperties(FilePath);  //获得当天存储的路径,不存在则生成当天的文件夹 String realSavePath = new GenerateFold().getFold(savePath);  saveFilePathAndName = new GenerateFileName().generateFileName(realSavePath,"pdf");  File file = new File(saveFilePathAndName); try {  file.createNewFile(); } catch (IOException e1) {  // TODO Auto-generated catch block  e1.printStackTrace(); }  initFile(file); try {  file.createNewFile(); //生成一个pdf文件 } catch (IOException e) {  // TODO Auto-generated catch block  e.printStackTrace(); } new CreatePdf(file).generatePDF(head,list,head.length);  return saveFilePathAndName; }}

 public static void main(String[] args)  { System.out.println("begin");  String [] head = {"name","sex","adress","height","age","jj"};  List<User> list = new ArrayList<User>(); User user1 = new User("zhangsan",1,1.1f,"北京","男","AA"); User user2 = new User("lisi",22222,3.2f,"上海","女","BB");  list.add(user1); list.add(user2);   String filePath = new CreatePdf().generatePDFs(head,list); System.out.println(filePath); System.out.println("end"); }