第一步，下载jar包以及建对应的文件夹。注意pd4ml的jar要选择pro版本。然后建一个pd4fonts.properties

里面对应的字体。

SimSun = simsun.ttf

前面为变量名，后面要对应你下载好的字体。网上都有各种字体下载。相应步骤做完了，做完后的文件夹如图格式都有了！

注意要引入图片中对应的jar下面的三个jar包到项目中去。

以下为从文件读取到数据再作导出功能。

import java.awt.Insets;

import java.io.BufferedInputStream;

import java.io.ByteArrayOutputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.IOException;

import java.io.StringReader;

import java.net.MalformedURLException;

import java.security.InvalidParameterException;

import org.zefer.pd4ml.PD4Constants;

import org.zefer.pd4ml.PD4ML;

public class Test {

protected int topValue = 10;

protected int leftValue = 20;

protected int rightValue = 10;

protected int bottomValue = 10;

protected int userSpaceWidth = 1300;

/**

* @param args

*/

public static void main(String[] args) {

try {

Test jt = new Test();

//此处填写你的html文件

String html = readFile("/Users/wangchen/Desktop/370fx2.html", "UTF-8");

//此处填写你下载的地方

jt.doConversion2(html, "/Users/wangchen/Desktop/370fx2.pdf");

} catch (Exception e) {

e.printStackTrace();

}

}

public void doConversion2(String htmlDocument, String outputPath)

throws InvalidParameterException, MalformedURLException,

IOException {

PD4ML pd4ml = new PD4ML();

pd4ml.enableDebugInfo();

pd4ml.setHtmlWidth(userSpaceWidth);

pd4ml.setPageSize(pd4ml.changePageOrientation(PD4Constants.A4));

pd4ml.setPageInsetsMM(new Insets(topValue, leftValue, bottomValue,

rightValue));

//此处的classPath注意一定要获取到你放fonts的文件夹。他需要获取到你下载的字体

String classPath = Test.class.getResource("/")+"fonts";

pd4ml.useTTF(classPath, true);

pd4ml.setDefaultTTFs("SimSun", "SimSun", "SimSun");

ByteArrayOutputStream baos = new ByteArrayOutputStream();

pd4ml.render(new StringReader(htmlDocument), baos);

baos.close();

File output = new File(outputPath);

java.io.FileOutputStream fos = new java.io.FileOutputStream(output);

fos.write(baos.toByteArray());

fos.close();

}

private final static String readFile(String path, String encoding)

throws IOException {

File f = new File(path);

FileInputStream is = new FileInputStream(f);

BufferedInputStream bis = new BufferedInputStream(is);

ByteArrayOutputStream fos = new ByteArrayOutputStream();

byte buffer[] = new byte[2048];

int read;

do {

read = is.read(buffer, 0, buffer.length);

if (read > 0) {

fos.write(buffer, 0, read);

}

} while (read > -1);

fos.close();

bis.close();

is.close();

return fos.toString(encoding);

}

}

如上你就可以下载将html转为pdf了。任意文本也可以转为pdf，经测试，可用

附件如下：https://pan.baidu.com/s/1wSvBM6Kti4IpI9IlDaycew

以下为浏览器下载pdf的工具类。直接调用红色的方法即可。htmlDocument 为你要导出的数据，response为该次请求的响应体，fileName为下载的名字

package com.ccb.common.utils;

import org.apache.commons.io.output.ByteArrayOutputStream;

import org.apache.commons.lang3.StringUtils;

import javax.servlet.http.HttpServletResponse;

import java.awt.*;

import java.io.*;

import java.security.InvalidParameterException;

import org.zefer.pd4ml.PD4Constants;

import org.zefer.pd4ml.PD4ML;

/**

* @author caihong

* @time 2019/1/28

*/

public class PDFUtil {

private static String PDF_TYPE="application/pdf";

private static String classpath=PDFUtil.class.getResource("/").getPath();

protected static int topValue = 10;

protected static int leftValue = 20;

protected static int rightValue = 10;

protected static int bottomValue = 10;

protected static int userSpaceWidth = 1300;

public static void pdf4htmlToPdf(String htmlDocument,HttpServletResponse response, String filename)throws InvalidParameterException,

IOException {

PD4ML pd4ml = new PD4ML();

pd4ml.enableDebugInfo();

pd4ml.setHtmlWidth(userSpaceWidth);

pd4ml.setPageSize(pd4ml.changePageOrientation(PD4Constants.A4));

pd4ml.setPageInsetsMM(new Insets(topValue, leftValue, bottomValue,rightValue));

pd4ml.useTTF(classpath+"fonts", true);

pd4ml.setDefaultTTFs("SimSun", "SimSun", "SimSun");

ByteArrayOutputStream baos = new ByteArrayOutputStream();

pd4ml.render(new StringReader(htmlDocument), baos);

baos.close();

renderPdf(response,baos.toByteArray(),filename);

}

public static void renderPdf(HttpServletResponse response, final byte[] bytes, final String filename) {

initResponseHeader(response, PDF_TYPE);

setFileDownloadHeader(response, filename, ".pdf");

if (null != bytes) {

try {

response.getOutputStream().write(bytes);

response.getOutputStream().flush();

} catch (IOException e) {

throw new IllegalArgumentException(e);

}

}

}

/**

* 分析并设置contentType与headers.

*/

private static HttpServletResponse initResponseHeader(HttpServletResponse response, final String contentType, final String... headers) {

// 分析headers参数

String encoding = "utf-8";

boolean noCache = true;

for (String header : headers) {

String headerName = StringUtils.substringBefore(header, ":");

String headerValue = StringUtils.substringAfter(header, ":");

if (StringUtils.equalsIgnoreCase(headerName, "utf-8")) {

encoding = headerValue;

} else if (StringUtils.equalsIgnoreCase(headerName, "no-cache")) {

noCache = Boolean.parseBoolean(headerValue);

} else {

throw new IllegalArgumentException(headerName + "不是一个合法的header类型");

}

}

// 设置headers参数

String fullContentType = contentType + ";charset=" + encoding;

response.setContentType(fullContentType);

if (noCache) {

// Http 1.0 header

response.setDateHeader("Expires", 0);

response.addHeader("Pragma", "no-cache");

// Http 1.1 header

response.setHeader("Cache-Control", "no-cache");

}

return response;

}

/**

* 设置让浏览器弹出下载对话框的Header.

* @param

*/

public static void setFileDownloadHeader(HttpServletResponse response, String fileName, String fileType) {

try {

// 中文文件名支持

String encodedfileName = new String(fileName.getBytes("GBK"), "ISO8859-1");

response.setHeader("Content-Disposition", "attachment; filename=\"" + encodedfileName + fileType + "\"");

} catch (UnsupportedEncodingException e) {

}

}

private final static String readFile(String path, String encoding)

throws IOException {

File f = new File(path);

FileInputStream is = new FileInputStream(f);

BufferedInputStream bis = new BufferedInputStream(is);

java.io.ByteArrayOutputStream fos = new java.io.ByteArrayOutputStream();

byte buffer[] = new byte[2048];

int read;

do {

read = is.read(buffer, 0, buffer.length);

if (read > 0) {

fos.write(buffer, 0, read);

}

} while (read > -1);

fos.close();

bis.close();

is.close();

return fos.toString(encoding);

}

}

自己完成controller，以及mapping映射后，注意要用get请求

http://localhost:8080/api/img/exportPdf?htmlDocument=12%E7%9A%84%E5%8F%91%E9%A1%BA%E4%B8%B0%E9%98%BF%E6%96%AF%E9%A1%BF%E5%8F%91%E9%80%81%E5%88%B0%E5%8F%91%E9%80%81%E5%A4%A7&fileName=123

便可以下载pdf了