itext实现pdf导出

jar

iText-2.1.4.jar
iTextAsian.jar 中文必备，否则不显示

程序员的一贯风格不多说，上代码：

public class OrderData2PDFServlet extends HttpServlet {    private static final long serialVersionUID = 1L;    private WebApplicationContext wac;      public OrderData2PDFServlet() {        super();    }    @Override    public void init() throws ServletException {        wac =WebApplicationContextUtils.getRequiredWebApplicationContext(this.getServletContext());      }    /*     * <p>生成批PDF document 并支持下载</p>     *      * @author Z.J     *      * @date 2016-8-2     *      * @param request     *      * @param response     *      * @throws ServletException     *      * @throws IOException     */    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {        // No.1 处理分页查询参数        Paginator page = new Paginator();        CommonUtils.setParametersForPage(page, request);        int  columnCount=6;        float[] columnRatio=new float[] { 2, 2, 1, 1, 2, 2 };        //pdf表格导出的title        String[] titleArr={"Paypal交易单号","客户姓名","交易日期","总金额","国家","回访次数"};        String header="订单信息";        OrderService orderService=(OrderService)wac.getBean("orderService");        //获取订单信息        List<Order> resultList =orderService.getOrderListByPage(page);        //创建文档对象，并设置大小，本案例设为A4纸尺寸        Document document = new Document(PageSize.A4.rotate());        try{            // 设置响应输出数据的字符集            response.setContentType("application/x-msdownload;charset=UTF-8");            // 激活浏览器文件下载框，提示用户保存            response.setHeader("Content-Disposition", "attachment;filename=order_info.pdf");            // open output stream            PdfWriter.getInstance(document, response.getOutputStream());            // open PDF document            document.open();            //字体处理，中文需要用到            FontSelector selector = new FontSelector();//设置英文显示字体TIMES_ROMAN及大小    selector.addFont(FontFactory.getFont(FontFactory.TIMES_ROMAN, 10));    //设置中文显示字体STSong-Light            Font cf1 = FontFactory.getFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED, 10);            //设置标题显示字体STSong-Light及大小            Font headerFont = FontFactory.getFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED, 18);            selector.addFont(cf1);            //创建pdf表格并填充表格内容            if (resultList != null && resultList.size() > 0) {                PdfPTable table = new PdfPTable(columnRatio);                PdfPCell topHeaderCell = new PdfPCell(new Phrase(header,headerFont));                topHeaderCell.setColspan(columnCount);                topHeaderCell.setMinimumHeight(35);                topHeaderCell.setBackgroundColor(new Color(189, 215, 238));                topHeaderCell.setHorizontalAlignment(Element.ALIGN_CENTER);                topHeaderCell.setVerticalAlignment(Element.ALIGN_MIDDLE);                table.addCell(topHeaderCell);                PdfPCell defaultCell = table.getDefaultCell();                defaultCell.setHorizontalAlignment(Element.ALIGN_CENTER);                defaultCell.setMinimumHeight(30);                defaultCell.setVerticalAlignment(Element.ALIGN_MIDDLE);                PdfPTableEvent event = new AlternatingBackground();                for (int i = 0; i < 2; i++) {                    for(String s:titleArr){                        table.addCell(selector.process(s));                    }                }                table.setHeaderRows(3);                table.setFooterRows(1);                defaultCell.setMinimumHeight(25);                for (Order o : resultList) {                    table.addCell(selector.process(CommonUtils.processNullAndEmpty(o.getPaypalNumber())));                    CustomerModel cu=o.getCustomer();                    if(cu!=null&&CommonUtils.isNotNullAndEmpty(cu.getCustomerName())){                        table.addCell(selector.process(CommonUtils.processNullAndEmpty(cu.getCustomerName())));                    }else{                        table.addCell(selector.process(""));                    }                    table.addCell(selector.process(CommonUtils.processNullAndEmpty(o.getTradeDate())));                    table.addCell(selector.process(CommonUtils.processNullAndEmpty(o.getOrderTotal())));                    if(cu!=null&&CommonUtils.isNotNullAndEmpty(cu.getCustomerName())){                        Country ct=cu.getCountry();                        if(ct!=null&&CommonUtils.isNotNullAndEmpty(ct.getCountryName())){                            table.addCell(selector.process(ct.getCountryName()));                        }else{                            table.addCell(selector.process(""));                        }                    }else{                        table.addCell(selector.process(""));                    }                    table.addCell(selector.process(CommonUtils.processNullAndEmpty(o.getCallbackTimes())));                }                table.setTableEvent(event);                document.add(table);            }else{            Font f1 = FontFactory.getFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED, 28);            f1.setColor(new GrayColor(0.75f));            PdfPTable table = new PdfPTable(1);            table.setWidthPercentage(100);            PdfPCell cell = new PdfPCell(new Phrase("暂无数据",f1));            cell.setHorizontalAlignment(Element.ALIGN_CENTER);            cell.setBorder(0);            cell.setMinimumHeight(30);            cell.setColspan(columnCount);            table.addCell(cell);            document.add(table);            }        }catch(Exception e){            e.printStackTrace();        }finally{            document.close();        }    }    /*     * <p></p>     *      * @author Z.J     *      * @date 2016-8-2     *      * @param request     *      * @param response     *      * @throws ServletException     *      * @throws IOException     */    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {        this.doGet(request, response);    }}

图简单的朋友们，可以直接把本代码给一下就能用，要是想深究的话，请仔细阅读itext的使用API。本案例使用FontSelector实现了中英文字体混合显示，程序会自动根据当前要显示的文字自行切换字体。
jar包和itext使用API的下载地址如下：http://download.csdn.net/detail/chrisjingu/9618083