java代码生成图片

⑹ JAVA怎样将PPTX文件转换成图片

关键代码就是： rtruns[l].setFontName("宋体");

import java.awt.Dimension;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

// function 检查文件是否为PPT
public static boolean checkFile(File file) {

boolean isppt = false;
String filename = file.getName();
String suffixname = null;

if (filename != null && filename.indexOf(".") != -1) {
suffixname = filename.substring(filename.indexOf("."));
if (suffixname.equals(".ppt")) {
isppt = true;
}
return isppt;
} else {
return isppt;
}
}

}

⑺ 高分求java代码，用来生成图片文件！！

//defaultSuffix是jpg
public static final boolean resizeImage(String fileName, String suffix) throws Exception {
boolean uploaded = false;
BufferedImage input;
if(suffix.equalsIgnoreCase("tif")||suffix.equalsIgnoreCase("tiff")||suffix.equalsIgnoreCase("png")) {
RenderedImage image = JAI.create("fileload", TurbineServlet.getRealPath(imageRoot + fileName+"."+suffix));
WritableRaster raster = image.Data(null);
BufferedImage bi = new BufferedImage( image.getColorModel(), raster, true, null);
BufferedImage bi2 = new BufferedImage( maxResizeDimension, bi.getHeight()*maxResizeDimension/bi.getWidth(), BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = bi2.createGraphics();
g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g2.setBackground(java.awt.Color.WHITE);//把tiff和png转换后的背景设置为白色
g2.fillRect(0, 0, maxResizeDimension, bi.getHeight()*maxResizeDimension/bi.getWidth());
g2.drawImage(bi, 0, 0, maxResizeDimension, bi.getHeight()*maxResizeDimension/bi.getWidth(), null);
PlanarImage pi = PlanarImage.wrapRenderedImage(bi2);
JAI.create("FileStore", pi, TurbineServlet.getRealPath(resizeRoot + fileName+"."+defaultSuffix).replaceAll("\\\\","\\\\\\\\"), "JPEG", new JPEGEncodeParam());
input = pi.getAsBufferedImage();
int w = maxThumbDimension, h = maxThumbDimension;

BufferedImage output = new BufferedImage(w, h, BufferedImage.TYPE_3BYTE_BGR);
Graphics2D g = output.createGraphics();
g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g.drawImage(input,0,0,w,h, null);
ImageIO.write(output, defaultSuffix, new File(TurbineServlet.getRealPath(thumbRoot + fileName+"."+defaultSuffix)));
}
else {
input = ImageIO.read(new File(TurbineServlet.getRealPath(imageRoot + fileName+"."+suffix)));
int w = maxThumbDimension, h = maxThumbDimension;

BufferedImage output = new BufferedImage(w, h, BufferedImage.TYPE_3BYTE_BGR);
Graphics2D g = output.createGraphics();
g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g.drawImage(input,0,0,w,h, null);
ImageIO.write(output, defaultSuffix, new File(TurbineServlet.getRealPath(thumbRoot + fileName+"."+defaultSuffix)));

BufferedImage output2 = new BufferedImage(maxResizeDimension, input.getHeight()*maxResizeDimension/input.getWidth(), BufferedImage.TYPE_3BYTE_BGR);
Graphics2D g2 = output2.createGraphics();
g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g2.drawImage(input,0,0,maxResizeDimension, input.getHeight()*maxResizeDimension/input.getWidth(), null);
ImageIO.write(output2, defaultSuffix, new File(TurbineServlet.getRealPath(resizeRoot + fileName+"."+defaultSuffix)));
}
uploaded = true;
return uploaded;
}

⑻ 用java怎么将word文档转成图片格式

可以使用Spire.Doc for Java在Java中利用代码进行转换。需要在 Java 程序中添加Free Spire.Doc.jar文件作为依赖项。可以从这个链接下载 JAR 文件；如果使用Maven，则可以通过在 pom.xml 文件中添加以下代码导入 JAR 文件。

repositories>
<repository>
<id>com.e-iceblue</id>
<url>https://repo.e-iceblue.cn/repository/maven-public/</url>
</repository></repositories><dependencies>
<dependency>
<groupId>e-iceblue</groupId>
<artifactId>spire.doc.free</artifactId>
<version>5.2.3</version>
</dependency></dependencies>

Java代码如下：

import com.spire.doc.Document;

import com.spire.doc.FileFormat;

import com.spire.doc.documents.ImageType;

import javax.imageio.ImageIO;

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.IOException;

public class ConvertWordToOtherFormats {

public static void main(String[] args) throws IOException {

//创建Document对象
Document doc = new Document();

//加载Word文档
doc.loadFromFile("C:\Users\Administrator\Desktop\sample.docx");

//将指定页保存为BufferedImage
BufferedImage image= doc.saveToImages(0, ImageType.Bitmap);

//将图片数据保存为PNG格式文档
File file= new File("output/ToPNG.png");
ImageIO.write(image, "PNG", file);

//将Word保存为SVG格式
doc.saveToFile("output/ToSVG.svg",FileFormat.SVG);

//将Word保存为RTF格式
doc.saveToFile("output/ToRTF.rtf",FileFormat.Rtf);

//将Word保存为XPS格式
doc.saveToFile("output/ToXPS.xps",FileFormat.XPS);

//将Word保存为XML格式
doc.saveToFile("output/ToXML.xml",FileFormat.Xml);

//将Word保存为TXT格式
doc.saveToFile("output/ToTXT.txt",FileFormat.Txt);
}

}

⑼ java生成pdf，图片怎么导不进去

不知道你用的什么方法来导的，但是如果通过PDF类库jar包来实现的话，应该是没问题的，参考如下java代码中关于如何插入图片到PDF的方法：

import com.spire.pdf.*;

import com.spire.pdf.graphics.*;

public class AddImage {
public static void main(String[] args) {
//创建文档
PdfDocument pdf = new PdfDocument();

//添加一页
PdfPageBase page = pdf.getPages().add();

//加载图片，并获取图片高宽
PdfImage image = PdfImage.fromFile("fj.png");
int width = image.getWidth()/2;
int height = image.getHeight()/2;

//绘制图片到PDF
page.getCanvas().drawImage(image,50,50,width, height);

//保存文档
pdf.saveToFile("result.pdf");
pdf.dispose();
}

}

⑽ java中利用html2image将html代码转换成图片时怎么调整生成图像的大小

用css样式定义图片的宽度和高度；但是这也需要看你图片的格式，图片定义宽度和高度后会失贞，建议采用gif格式的图片。