java实现调用url来下载pdf并且加水印，追加excel转成pdf

水印jar包：

jar包获取百度云：链接: https://pan.baidu.com/s/1x0qS1pxCn1Pn1TDFx2MyWg 提取码: 7iky 

 excel转pdf的jar包+license破解认证：

链接：https://pan.baidu.com/s/1fRQNUEoq2D9_W10XTRp5hQ
提取码：xibs

第一种：使用spire.pdf.jar包 或者导入依赖。

<!--filtutil依赖-->
<dependency>
    <groupId>commons-io</groupId>
    <artifactId>commons-io</artifactId>
    <version>2.2</version>
</dependency>
<!--pdf依赖-->
<dependency>
    <groupId>e-iceblue</groupId>
    <artifactId>spire.pdf.free</artifactId>
    <version>2.2.2</version>
</dependency>
<repositories>
    <repository>
        <id>com.e-iceblue</id>
        <name>e-iceblue</name>
        <url>http://repo.e-iceblue.com/nexus/content/groups/public/</url>
    </repository>
</repositories>

代码：

package com.yiyezhiqiu.compdfwatermark.controller;


import com.spire.pdf.PdfDocument;
import com.spire.pdf.PdfPageBase;
import com.spire.pdf.graphics.*;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.io.FileUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.awt.*;
import java.awt.geom.Dimension2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Map;

@Slf4j
@RestController
@RequestMapping(value = "/pdf")
public class PdfWaterMark {


    @ResponseBody
    @RequestMapping(value = "/loadPdf")
    public void loadPdf(HttpServletRequest request, HttpServletResponse response) throws IOException {
        String strUrl = "http://ip:port/apiIn/00000.pdf";
        URL url = new URL(strUrl);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        //得到输入流
        InputStream inputStream = conn.getInputStream();
        String[] urlSplit = strUrl.split("/");
        int i = urlSplit.length;
        String[] nextSplit = urlSplit[urlSplit.length - 1].split("\.");
        //解析出名字
        String fileName = nextSplit[0];
        log.info("fileName:" + nextSplit[0]);
        log.info("localdateTime:" + LocalDateTime.now() + ",localdate" + LocalDate.now());
        //来使得唯一
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyyMMddHHmmss");
        String str = formatter.format(LocalDateTime.now());

        for (int m = 1; m < 3; m++) {

            int rd = (int) (Math.random() * 10);
            str = str + rd;
        }

        //保存路径
        String filePath = "D://" + nextSplit[0] + "-" + str + ".pdf";
        java.io.File file = new java.io.File(filePath);

        FileUtils.copyInputStreamToFile(inputStream, file);

        //获取当前登陆用户
//        Map<String,Object> map = UserController.findCurrentUser(request,response);
//        String name = (String)map.get("name");
        waterMark(filePath, "hlh");


    }


    public void waterMark(String inputPdf, String waterMarkName) {

        //创建PdfDocument类的对象
        PdfDocument pdf = new PdfDocument();

        //加载测试文档
        pdf.loadFromFile(inputPdf);

        //获取文档第1页
        PdfPageBase page = pdf.getPages().get(0);
        pdf.getPages().getCount();//文档总页数，就可以对文档中所有页数加水印，但Spire.pdf.jar免费10页。故找了另外的pdf加水印方式。
        //调用insertWatermark()方法插入文本水印

        insertWatermark(page, waterMarkName);


        //保存文档到指定文件夹

        pdf.saveToFile(inputPdf);
//        pdf.saveToFile(inputPdf, FileFormat.PDF);
        pdf.close();

    }

    static void insertWatermark(PdfPageBase page, String watermark) {



        Dimension2D dimension2D = new Dimension();

        dimension2D.setSize(page.getCanvas().getClientSize().getWidth() / 2, page.getCanvas().getClientSize().getHeight() / 2);

        PdfTilingBrush brush = new PdfTilingBrush(dimension2D);

        brush.getGraphics().setTransparency(0.4F);

        brush.getGraphics().save();

        brush.getGraphics().translateTransform((float) brush.getSize().getWidth() / 2, (float) brush.getSize().getHeight() / 2);

        brush.getGraphics().rotateTransform(-45);
        //这句话放在eclipse会有红线报错，但是无所谓，直接启动使用。
        brush.getGraphics().drawString(watermark, new PdfTrueTypeFont(new Font("宋体", 10, 50), true), PdfBrushes.getViolet(), 0, 0, new PdfStringFormat(PdfTextAlignment.Center));
        brush.getGraphics().restore();

        brush.getGraphics().setTransparency(1);


        Rectangle2D loRect = new Rectangle2D.Float();

        loRect.setFrame(new Point2D.Float(0, 0), page.getCanvas().getClientSize());

        page.getCanvas().drawRectangle(brush, loRect);

    }

}






第二种方式：jar包获取在最前面  itex的两个
依赖如下：
<!--itextpdf-->
<dependency>
    <groupId>com.itextpdf</groupId>
    <artifactId>itextpdf</artifactId>
    <version>5.4.3</version>
</dependency>
<dependency>
    <groupId>com.itextpdf</groupId>
    <artifactId>itext-asian</artifactId>
    <version>5.2.0</version>
</dependency>


代码：
package com.yiyezhiqiu.comwaterpdf.controller;

import com.itextpdf.text.Element;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.*;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.io.FileUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.swing.*;
import java.awt.*;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
@Slf4j
@RestController
@RequestMapping("/pdf2")
public class WaterMarkPdf {




    @ResponseBody
    @RequestMapping(value = "/loadPdf")
    public void loadPdf(HttpServletRequest request, HttpServletResponse response) throws IOException {
        String strUrl = "http://ip:port/apiIn/00000.pdf";
        URL url = new URL(strUrl);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        //得到输入流
        InputStream inputStream = conn.getInputStream();
        String[] urlSplit = strUrl.split("/");
        int i = urlSplit.length;
        String[] nextSplit = urlSplit[urlSplit.length - 1].split("\.");
        //解析出名字
        String fileName = nextSplit[0];
        log.info("fileName:" + nextSplit[0]);
        log.info("localdateTime:" + LocalDateTime.now() + ",localdate" + LocalDate.now());
        //来使得唯一
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyyMMddHHmmss");
        String str = formatter.format(LocalDateTime.now());

        for (int m = 1; m < 3; m++) {

            int rd = (int) (Math.random() * 10);
            str = str + rd;
        }

        //保存路径
        String filePath = "D:\" + nextSplit[0] + "-" + str + ".pdf";
        java.io.File file = new java.io.File(filePath);

        FileUtils.copyInputStreamToFile(inputStream, file);

        //获取当前登陆用户
//        Map<String,Object> map = UserController.findCurrentUser(request,response);
//        String name = (String)map.get("name");
//        waterMark02(filePath, filePath,"hlh");


    }




//    public void waterMark02(String inputPath,String outPutPath,String name){
    @RequestMapping("/water")
        public void waterMark02(){

        String inputFile = "D:\00000-2020040122333118.pdf";
        String outputFile = "D:\b.pdf";
        String content = "hlh";
        waterMark(inputFile, outputFile, content);

        File f=new File(inputFile);
        if(f.exists()){
            f.delete();
        }
       // waterMark(inputPath, outPutPath, name);
        //String base64String = getPDFBinary(outputFile);
        //System.out.println(base64String);
        //getText(outputFile);
    }

    //给PDF添加水印
    //inputFile 文件路径+名称
    //outputFile 添加水印后输出文件保存的路径+名称
    //waterMarkName 添加水印的内容
    public static void waterMark(String inputFile,String outputFile, String waterMarkName) {
        int interval = -5;
        try {
            PdfReader reader = new PdfReader(inputFile);  //切记这里的参数是文件的路径 ，路径必须是双斜杠的如F:\123.pdf，不能是F:/123.pdf 或者F:123.pdf
            PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(
                    outputFile));

            BaseFont base = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H",   BaseFont.EMBEDDED);

            Rectangle pageRect = null;
            PdfGState gs = new PdfGState();
            gs.setFillOpacity(0.3f);//改透明度
            gs.setStrokeOpacity(0.4f);
            int total = reader.getNumberOfPages() + 1;

            JLabel label = new JLabel();
            FontMetrics metrics;
            int textH = 0;
            int textW = 0;
            label.setText(waterMarkName);
            metrics = label.getFontMetrics(label.getFont());
            textH = metrics.getHeight();
            textW = metrics.stringWidth(label.getText());

            PdfContentByte under;
//            for (int i = 1; i < total; i++) {
//                pageRect = reader.getPageSizeWithRotation(i);
//                under = stamper.getOverContent(i);//在内容上方加水印
　　　　　　　　　　 under = stamper.getUnderContent(i);//在内容下方加水印
//                under.saveState();
//                under.setGState(gs);
//                under.beginText();
//                under.setFontAndSize(base, 20);

                // 水印文字成30度角倾斜
//                for (int height = interval + textH; height < pageRect.getHeight();
//                     height = height + textH*3) {
//                    for (int width = interval + textW; width < pageRect.getWidth() + textW;
//                         width = width + textW*2) {
//                        under.showTextAligned(Element.ALIGN_LEFT
//                                , waterMarkName, width - textW,
//                                height - textH, 30);
//                    }
//                }


                // 添加水印文字
//                under.endText();
//            }


            for (int i = 1; i < total; i++) {
                under = stamper.getOverContent(i);// 在内容上方加水印
                //content = stamper.getUnderContent(i);//在内容下方加水印
                gs.setFillOpacity(0.2f);
                // content.setGState(gs);
                under.beginText();
                under.setColorFill(BaseColor.RED);//改变颜色
                under.setFontAndSize(base, 50);//改水印文字大小
                under.setTextMatrix(70, 200);
　　　　　　　　　　//后3个参数，x坐标，y坐标，角度
                under.showTextAligned(Element.ALIGN_CENTER, waterMarkName, 300, 350, 55);


                under.endText();
            }
            stamper.close();
            reader.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}


后面追加功能。

execl文件转成pdf。
aspose的jar包，在maven中没，只能引入，看我其他某一篇随笔有说引入。

代码如下：

@RequestMapping(value="/excelCvPdfAddWaterMark")
public String excelCvPdfAddWaterMark(HttpServletRequest request) throws IOException{

String relativePath = request.getServletContext().getRealPath("fileDir");//获取相对路径
File licensefile = new File(relativePath+"\license.xml");

String fileName = relativePath + "\0B1002-01-13_A.1.xlsx";
if (!getExcelLicense(licensefile)) { // 验证License 若不验证则转化出的pdf文档会有水印产生
return null;
}
FileOutputStream fileOS = null;
try {
long old = System.currentTimeMillis();
Workbook wb = new Workbook(fileName);// 原始excel路径
//fileName = fileName.substring(0, fileName.lastIndexOf(".") + 1) + "pdf";

//来使得唯一
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyyMMddHHmmss");
String str = formatter.format(LocalDateTime.now());

//保存路径
fileName = "D:\"+ str + ".pdf";
File file = new File(fileName);// 输出路径
for (int i = 0; i < wb.getWorksheets().getCount(); i++) {
Worksheet worksheet = wb.getWorksheets().get(i);
worksheet.getPageSetup().setCenterHorizontally(true);//水平居中
worksheet.getPageSetup().setZoom(90);// 设置缩放比例
}
//CellsHelper.setFontDir(FONT); // 这里是字体路径
fileOS = new FileOutputStream(file);
wb.save(fileOS, com.aspose.cells.SaveFormat.PDF);
fileOS.close();
long now = System.currentTimeMillis();
} catch (Exception e) {
e.printStackTrace();
} finally {
if (fileOS != null) {
fileOS.close();
}
}

waterMark02(fileName);//调用方法去加水印，上面有代码


return "success";

}



/**
* Excel签名验证
*
* @return
* @throws IOException
* @throws Exception
*/
public static boolean getExcelLicense(File file) throws IOException {
boolean result = false;
InputStream is = null;
try {
//is = PdfController.class.getResourceAsStream("license.xml"); // license.xml应放在..WebRootWEB-INFclasses路径下
is = new FileInputStream(file);
com.aspose.cells.License aposeLic = new com.aspose.cells.License();
aposeLic.setLicense(is);
result = true;
} catch (Exception e) {
e.printStackTrace();
} finally {
if (is != null) {
is.close();
}
}
return result;
}





/*
　　追加，通过调用别人接口把excel下到本地服务器，通过返回状态码来判断成功失败（总结，也就是连接都可以通过用连接对象.getResponseCode()来获得http状态码，进而获取状态码相对应的信息）
*/

public Map<String,Object> loadExcel(String excelFilePath,String userNum) throws IOException{

Map<String, Object> map2 = new HashMap<String, Object>();

DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyyMMddHHmmss");
String str = formatter.format(LocalDateTime.now());

InputStream inputStream = null;
try {
URL url = new URL(excelFilePath);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
String code = conn.getResponseCode()+"";
if("200".equals(code)){
// 得到输入流
inputStream = conn.getInputStream();
}
if("400".equals(code)){
BufferedReader reader=new BufferedReader(new InputStreamReader(conn.getInputStream()));
String lines;
StringBuffer sb=new StringBuffer("");
while((lines = reader.readLine())!=null){
lines =new String(lines.getBytes(),"utf-8");
sb.append(lines);
}
String jsonStr = new String(sb);
JSONObject jsonObject = JSONObject.parseObject(jsonStr);
String msg = jsonObject.getString("msg");
map2.put("status", "false");
map2.put("msg", msg);
map2.put("path", "");
return map2;
}
} catch (Exception e) {
map2.put("path", "");
map2.put("msg", "系统连接异常");
map2.put("status", "false");
return map2;
}




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原文地址：https://www.cnblogs.com/yiyezhiqiuwuchen/p/12620581.html