itext操作pdf文件

itext操作pdf模板：

1、首先使用excel制作好模板文件，将模板文件转换为pdf格式文件。

2、使用Adobe Acrobat XI Pro工具打开pdf文件，在需要的位置添加文本域。（工具-->表单-->编辑）

3、对每个文本域设置文本域属性，为其命名。如title、desion_no等。

4、通过itext方式操作文本域，为期赋值，并重新生成pdf文件。

package com.pcm.app.transfer;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;

import org.apache.log4j.Logger;

import com.itextpdf.text.pdf.AcroFields;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfStamper;
import com.itextpdf.text.pdf.PdfWriter;
import com.pcm.app.pojo.SimplePunishWrite;
import com.pcm.app.pojo.VioBehaviour;
import com.pcm.app.utils.CodeFactory;
import com.pcm.app.utils.TomcatUtil;
import com.pcm.framework.utils.InitUtil;

/**
 * 使用pdf模板生成简易程序文件
 * @author 
 *
 */
public class GeneratePDFService{
    
    private static Logger logger = Logger.getLogger(GeneratePDFService.class);
    
    private static final String PDF_FILE_TYPE = ".pdf";
    
    private PdfStamper ps = null;
    
    private FileOutputStream fos = null;
    
    private String path = System.getProperty("user.dir");
    
    /**
     * 冒号
     */
    private static final String COLON = ":";
    
    private static final String URL_START = "http://";
    private static final String WEBAPPS = "/webapps";
    private static final String SERVER_PATH = "/SL_JWT/pdf/";
    private static final String TOMCAT_CONFIG_FILE = "/conf/server.xml";
    private static final String PDF_FILE_NAME = "simplepunish";
    private static final String PDF_TEMPLET_FILENAME = "sp_templet";

    /**
     * 使用模板生成PDF文件
     */
    public boolean generateSimplePunishPDFFromPDFTemplet(SimplePunishWrite sp,VioBehaviour behaviour) {
        logger.info("Enter generateSimplePunishPDFFromPDFTemplet method..."); 
        boolean isSuccess = false;
        String teamName = InitUtil.getProperty("team_name");
        String policeStation = InitUtil.getProperty("police_station");
        String courtName = InitUtil.getProperty("court_name");
        try {
            BaseFont font = BaseFont.createFont("font/simsun.ttc,1",
                    BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
            String fileNameTemplet = getClientVersionSavePath(PDF_TEMPLET_FILENAME);
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            PdfReader reader = new PdfReader(fileNameTemplet);
            ps = new PdfStamper(reader, bos,PdfWriter.VERSION_1_5,false);
            AcroFields field = ps.getAcroFields();
            setFieldProperty("title",font,field); //title为pdf中添加的域
            field.setField("title", teamName);  //设置域的值
            // 注意pdf中域的大小，这里设置的值太长，pdf中会显示不全
            // 设置为true/false在点击生成的pdf文档的填充域时有区别，
            ps.setFormFlattening(true);
            ps.close();
            String fileName = getClientVersionSavePath(PDF_FILE_NAME);
            fos = new FileOutputStream(fileName);  //生成文件
            fos.write(bos.toByteArray());
            fos.close();
            isSuccess = true;
            logger.info("End generated pdf file.");
        } catch (Exception e) {
            logger.error("Generate pdf file occur exception.", e);
            return isSuccess;
        }  finally {
            logger.info("close stream resource.");
            try {
                if (ps != null) {
                    ps.close();
                    ps = null;
                }
                if (fos != null) {
                    fos.close();
                    fos = null;
                }
            } catch (Exception e1) {
                logger.error("close stream occur exception", e1);
            }
        }
        return isSuccess;
    }
    

    private void setFieldProperty(String key,BaseFont font, AcroFields field) {
        field.setFieldProperty(key,"textfont",font,null); //处理乱码
    }
    /**
     * 移动终端访问文件所在web地址
     * @param fileName
     * @param version
     * @return
     */
    public String getURLAddress(String fileName) {
        String filepath = getTomcatConfigFilePath();
        File serverXml = new File(filepath);
        String ip = TomcatUtil.getLocalHostAddress();
        int port = TomcatUtil.getTomcatPortFromConfigXml(serverXml);
        String url = new StringBuffer().append(URL_START)
                                       .append(ip).append(COLON)
                                       .append(port).append(SERVER_PATH)
                                       .append(fileName).append(PDF_FILE_TYPE)
                                       .toString();
        logger.info("The client version url address is : " + url);
        return url;
    }

    /**
     * 获取PDF文件保存路径
     * @param clientVersion
     * @return
     */
    private String getClientVersionSavePath(String fileName) {
        StringBuffer sb = new StringBuffer();
        sb.append(path);
        sb.append(WEBAPPS);
        sb.append(SERVER_PATH);
        sb.append(fileName);
        sb.append(PDF_FILE_TYPE);
        logger.info("The PDF file save path is " + sb.toString());
        return sb.toString();
    }

    /**
     * 获取tomcat服务器../conf/server.xml文件路径
     * @param clientVersion
     * @return
     */
    private String getTomcatConfigFilePath() {
        StringBuffer sb = new StringBuffer();
        sb.append(path);
        sb.append(TOMCAT_CONFIG_FILE);
        logger.info("The tomcat server.xml file path is " + sb.toString());
        return sb.toString();
    }
    
    public String toString(Object obj) {
        return obj != null ? toString(obj, "utf-8").trim() : "无";
    }
    
    private String toString(Object obj, String charset) {
        if (obj instanceof byte[]) {
            try {
                return new String((byte[]) obj, charset);
            } catch (Exception e) {
                return new String((byte[]) obj);
            }
        } else {
            return obj.toString();
        }
    }
}