Java实现pdf转图片,分享给大家
pom.xml内容为:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>pdf2img</groupId>
<artifactId>pdf2img</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>org.apache.pdfbox</groupId>
<artifactId>pdfbox</artifactId>
<version>2.0.4</version>
</dependency>
</dependencies>
</project>
单个pdf文件转图片Java代码如下:
public static List<String> pdfToImagePath(String filePath) {
List<String> list = new ArrayList<String>();
String fileDirectory = filePath.substring(0, filePath.lastIndexOf("."));//获取去除后缀的文件路径
String imagePath;
File file = new File(filePath);
try {
File f = new File(fileDirectory);
if (!f.exists()) {
f.mkdir();
}
PDDocument doc = PDDocument.load(file);
PDFRenderer renderer = new PDFRenderer(doc);
int pageCount = doc.getNumberOfPages();
for (int i = 0; i < pageCount; i++) {
// 方式1,第二个参数是设置缩放比(即像素)
// BufferedImage image = renderer.renderImageWithDPI(i, 296);
// 方式2,第二个参数是设置缩放比(即像素)
BufferedImage image = renderer.renderImage(i, 1.25f); //第二个参数越大生成图片分辨率越高,转换时间也就越长
imagePath = fileDirectory + "/" + i + ".jpg";
ImageIO.write(image, "PNG", new File(imagePath));
list.add(imagePath);
}
} catch (IOException e) {
e.printStackTrace();
}
return list;
}
多个pdf文件转图片Java代码如下:
public static void main(String[] args) {
ArrayList<String> list=getDirPathFiles("D:\\pdf\\3");
for(int i=0;i<list.size();i++){
try {
String filePath = list.get(i);
System.out.println(list.size() + "//" + i + "//" + filePath);
pdfToImagePath(filePath, "D:\\pdf\\3save", "3-"+i + "");
}catch (Exception e){
e.printStackTrace();
continue;
}
}
}
public static List<String> pdfToImagePath(String filePath,String savePath,String subStr) {
List<String> list = new ArrayList<String>();
String fileDirectory = filePath.substring(0, filePath.lastIndexOf("."));//获取去除后缀的文件路径
String imagePath;
File file = new File(filePath);
try {
File f = new File(fileDirectory);
if (!f.exists()) {
f.mkdir();
}
PDDocument doc = PDDocument.load(file);
PDFRenderer renderer = new PDFRenderer(doc);
int pageCount = doc.getNumberOfPages();
for (int i = 0; i < pageCount; i++) {
// 方式1,第二个参数是设置缩放比(即像素)
// BufferedImage image = renderer.renderImageWithDPI(i, 296);
// 方式2,第二个参数是设置缩放比(即像素)
BufferedImage image = renderer.renderImage(i, 1.25f); //第二个参数越大生成图片分辨率越高,转换时间也就越长
imagePath = savePath + "/"+subStr+"-" + i + ".jpg";
ImageIO.write(image, "PNG", new File(imagePath));
list.add(imagePath);
}
} catch (Exception e) {
e.printStackTrace();
}
return list;
}
//获取文件夹下所有文件
public static ArrayList getDirPathFiles(String path) {
ArrayList files = new ArrayList<String>();
File file = new File(path);
File[] tempList = file.listFiles();
for (int i = 0; i < tempList.length; i++) {
if (tempList[i].isFile()) {
files.add(tempList[i].toString());
}
}
return files;
}