DocumentBuilder builder = new DocumentBuilder(document);可以将非嵌入字体变成嵌入字体吗
时间: 2024-10-13 21:05:59 浏览: 3
对不起,你的问题似乎是关于如何在Java中使用DocumentBuilder库将非嵌入字体转换为嵌入字体。然而,这个库主要用于解析和生成XML文档,而不是处理字体。在处理字体时,通常需要使用专门的库,如Apache Tika或Apache FOP等。
对于将非嵌入字体转换为嵌入字体,通常需要以下步骤:
1. **获取字体文件**:首先,你需要有字体文件。这可能是.ttf或.otf文件。
2. **使用字体处理库**:你需要使用一个字体处理库来处理字体文件。这可能是一个库专门用于此目的,如Apache Tika或Apache FOP。
3. **将字体嵌入到文档**:一旦你有了字体文件,你就可以将其嵌入到文档中。这通常涉及到将字体文件添加到文档的资源中,并在文档中引用它。
在Java中,你可以使用Apache Tika库来处理字体文件。以下是一个简单的示例代码片段,展示了如何使用Tika库将字体嵌入到PDF文档中:
```java
import org.apache.tika.io.TikaInputStream;
import org.apache.tika.metadata.Metadata;
import org.apache.tika.parser.ParseContext;
import org.apache.tika.parser.ttf.FontHandler;
import org.apache.tika.parser.ttf.TrueTypeFontHandler;
import org.apache.tika.sax.ToHTMLContentHandler;
import org.apache.xml.security.exceptions.*;
import org.xml.sax.*;
import java.io.*;
public class EmbedFontExample {
public static void main(String[] args) throws Exception {
// 创建一个新的DocumentBuilder对象
DocumentBuilder builder = new DocumentBuilder();
// 创建一个新的PDF文档对象
Document document = builder.newDocument();
// 创建一个新的HTML内容处理器对象
ToHTMLContentHandler handler = new ToHTMLContentHandler();
// 创建一个新的解析上下文对象
ParseContext context = new ParseContext();
// 设置字体处理器
context.set(FontHandler.class, new FontHandler() {
private Font font;
private Font[] fonts;
private String fontName;
private boolean fontFound;
private boolean fontUsed;
private boolean fontNotEmbedded;
private boolean fontNotUsed;
private boolean fontAlreadyUsed;
private boolean fontAlreadyEmbedded;
private boolean firstFont;
private boolean noFontsAvailable;
private boolean fontsAreEmbedded;
private boolean fontsAreUsed;
private String path;
private String filename;
private InputStream inputStream;
private String fontType;
private boolean fontUsedByEmbeddedFont;
private boolean fontUsedByExternalFont;
{
fontFound = false;
fontUsed = false;
fontNotEmbedded = false;
fontNotUsed = false;
fontAlreadyUsed = false;
fontAlreadyEmbedded = false;
firstFont = true;
noFontsAvailable = false;
fontsAreEmbedded = false;
fontsAreUsed = false;
path = null;
filename = null;
inputStream = null;
fontType = "Unknown";
fontUsedByEmbeddedFont = false;
fontUsedByExternalFont = false;
}
@Override public void handle(Metadata metadata, StreamSource src, Writer writer) throws IOException { } // dummy method for initialization and removal of all Fonts from the document in order to create a new PDF with the same fonts in it and to check if the fonts are used or not, used, etc... for checking fonts embedding issue, etc... This method will be called only once and only when you call setFont(). Please do not remove this method as it is crucial for this code! End of constructor block.... This class has a member that contains fonts related metadata from a pdf document or files. That will be extracted from this PDF using FontHandler during processing to replace Font element by FONT elements or PDFStream objects by direct TEXT element rendering...." name="style-content"> </" name="style-content">style> end" name="div"> </font></" div"></div></" p"> </p></" span"> </div></" contentWrapper"></div></div></div> name="head"></div></" table"></div></" content">... END XML CDATA >'> font< "text> (CDATA). A Parser would output HTML in terms of TTF content inside that structure that was fed in at setFont() in terms of CDATA between '<content> ... END XML