上传文件服务器"/>
关于java操作pdf，同时上传文件服务器
前言：本章节采用的文件服务器是七牛云的，不同的文件服务器可以根据实际api不同作出相应的操作
好了废话不多说，开始撸代码
First：导入pom依赖
<!-- 操作pdf --><dependency><groupId>com.itextpdf</groupId><artifactId>itextpdf</artifactId><version>5.5.10</version></dependency><dependency><groupId>com.itextpdf</groupId><artifactId>itext-asian</artifactId><version>5.2.0</version></dependency><!-- 操作七牛云--><dependency><groupId>com.qiniu</groupId><artifactId>qiniu-java-sdk</artifactId><version>[7.2.0, 7.2.99]</version></dependency>
导入好了pom依赖后记得更新maven 工程哦
Second：制作好一个上传七牛云的工具类
import com.google.gson.Gson;
import com.qiniumon.QiniuException;
import com.qiniumon.Zone;
import com.qiniu.http.Response;
import com.qiniu.storage.Configuration;
import com.qiniu.storage.UploadManager;
import com.qiniu.storage.model.DefaultPutRet;
import com.qiniu.storage.persistent.FileRecorder;
import com.qiniu.util.Auth;
import lombok.extern.java.Log;import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.nio.file.Paths;@Log
public class QiniuUtil {//设置好账号的ACCESS_KEY和SECRET_KEYprivate static final String ACCESS_KEY = "****";private static final String SECRET_KEY = "****";//要上传的空间 bucket nameprivate static final String BUCKET_NAME = "****";/*** 简单上传* @param localFilePath* @param fileName* @return* @throws QiniuException*/public static String easyUpLoad(File localFilePath, String fileName) throws QiniuException {return intoResult(null,localFilePath,null, fileName,null);}/*** 字节数组上传* @param uploadBytes* @param fileName* @return* @throws QiniuException*/public static String byteUpLoad(byte[] uploadBytes, String fileName) throws QiniuException {return intoResult(uploadBytes,null,null, fileName,null);}/*** 数据流上传* @param byteInputStream* @param fileName* @return* @throws QiniuException*/public static String byteArrayInputStreamUpLoad(ByteArrayInputStream byteInputStream, String fileName) throws QiniuException {return intoResult(null,null,byteInputStream, fileName,null);}/*** 断点续上传* @param localFilePath* @param fileName* @return*/public static String recorderUpLoad(File localFilePath, String fileName) {String localTempDir = Paths.get(System.getenv("java.io.tmpdir"), BUCKET_NAME).toString();try {//设置断点续传文件进度保存目录FileRecorder fileRecorder = new FileRecorder(localTempDir);return intoResult(null,localFilePath,null,fileName,fileRecorder);} catch (IOException ex) {ex.printStackTrace();return ex.getMessage();}}private static String intoResult(byte[] uploadBytes, File localFilePath, ByteArrayInputStream byteInputStream, String fileName, FileRecorder fileRecorder) throws QiniuException {Configuration cfg = new Configuration(Zone.zone2());UploadManager uploadManager = new UploadManager(cfg, fileRecorder);
// String substring = fileName.substring(fileName.lastIndexOf("."));String key = "hlm/images/"+fileName;Auth auth = Auth.create(ACCESS_KEY, SECRET_KEY);String upToken = auth.uploadToken(BUCKET_NAME);Response response = null;try {if(uploadBytes != null && localFilePath == null && byteInputStream == null){response = uploadManager.put(uploadBytes, key, upToken);}if(localFilePath != null && uploadBytes == null && byteInputStream == null){response = uploadManager.put(localFilePath, key, upToken);}if(byteInputStream != null && uploadBytes == null && localFilePath == null){response = uploadManager.put(byteInputStream,key,upToken,null, null);}if(response == null){return "参数错误";}//解析上传成功的结果DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class);return putRet.key;} catch (QiniuException ex) {Response r = ex.response;throw new QiniuException(r);}}
}
Third：制作生成pdf的方法
直接通过固定模板生成
@RequestMapping(value = "/pdf",method = RequestMethod.GET)public String exportPdf(HttpServletResponse response) throws UnsupportedEncodingException {// 指定解析器System.setProperty("javax.xml.parsers.DocumentBuilderFactory","com.sun.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl");String filename="XXXXX.pdf";String path="C:\\XXX\\XXXX\\Desktop";response.setContentType("application/pdf");response.setHeader("Content-Disposition", "attachment;fileName="+ URLEncoder.encode(filename, "UTF-8"));ByteArrayOutputStream byteArrayOutputStream = null;PdfStamper ps = null;String s = null;PdfReader reader = null;try {byteArrayOutputStream = new ByteArrayOutputStream();// 2 读入pdf表单reader = new PdfReader(path+ "/"+filename);// 3 根据表单生成一个新的pdfps = new PdfStamper(reader, byteArrayOutputStream);// 4 获取pdf表单AcroFields form = ps.getAcroFields();// 5给表单添加中文字体BaseFont bf = BaseFont.createFont("STSongStd-Light","UniGB-UCS2-H", false);form.addSubstitutionFont(bf);// 6查询数据Map<String, Object> data = new HashMap<String, Object>();data.put("username", "康怀安");data.put("idcard", "360302188888888888");data.put("mobile", "15888888888");// 7遍历data 给pdf表单表格赋值for (String key : data.keySet()) {form.setField(key,data.get(key).toString());}// 如果为false那么生成的PDF文件还能编辑，一定要设为trueps.setFormFlattening(true);ps.close();reader.close();s = QiniuUtil.byteUpLoad(byteArrayOutputStream.toByteArray(), filename);System.out.println(s);//-----------------------------pdf 添加图片----------------------------------// 通过域名获取所在页和坐标，左下角为起点
// System.out.println("pdf 添加图片");
// String imgpath="C:\\Users\\Dell\\Desktop\\小图标\\qr\\92021339.jpg";
// int pageNo = form.getFieldPositions("icon").get(0).page;
// Rectangle signRect = form.getFieldPositions("icon").get(0).position;
// float x = signRect.getLeft();
// float y = signRect.getBottom();
// // 读图片
// Image image = Image.getInstance(imgpath);
// // 获取操作的页面
// PdfContentByte under = ps.getOverContent(pageNo);
// // 根据域的大小缩放图片
// image.scaleToFit(signRect.getWidth(), signRect.getHeight());
// // 添加图片
// image.setAbsolutePosition(x, y);
// under.addImage(image);//-------------------------------------------------------------System.out.println("===============PDF导出成功=============");} catch (Exception e) {System.out.println("===============PDF导出失败=============");e.printStackTrace();} finally {try {if(ps != null){ps.close();}if(reader != null){reader.close();}byteArrayOutputStream.close();} catch (Exception e) {e.printStackTrace();}}return s;}
读取七牛模板生成pdf（编写一个下载的工具）
private static InputStream download(String url) {OkHttpClient client = new OkHttpClient();System.out.println(url);Request req = new Request.Builder().url(url).build();Response resp = null;try {resp = client.newCall(req).execute();System.out.println(resp.isSuccessful());if (resp.isSuccessful()) {ResponseBody body = resp.body();return body.byteStream();}} catch (IOException e) {e.printStackTrace();System.out.println("Unexpected code " + resp);}return null;}
PdfReader reader = new PdfReader(download);
根据一个固定的模板生成pdf，如果你需要下载生成好的模板，可以将byteArrayOutputStream 流改为response.getOutptStream
注意：
PdfStamper 生成的文件要在close之后才会写入传进去的流里面，所有当你不是预留给浏览器下载的时候，记得close再来操作你存储流的对象
你的pdf制作需要使用Adobe Acrobat 9 Pro软件制作
制作方法
制作的话还是很简单啦~~~~~~~~~~
这个时候，你是不是需要这个软件啦~~~~~~~~~~~~
下载的也很多资源的，我还没有上传百度云，所有不能给出下载连接了，但是直接搜这个Adobe Acrobat 9 Pro软件的话网络上也是有很多资源的
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关于java操作pdf,同时上传文件服务器
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