使用Servlet在浏览器中显示Pdf文件

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class PdfServlet extends HttpServlet {
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // 设置响应内容类型为PDF
        response.setContentType("application/pdf");
        
        // 读取PDF文件并将其写入响应输出流
        // 这里假设PDF文件位于服务器上的路径为 /path/to/pdf.pdf
        FileInputStream fileInputStream = new FileInputStream("/path/to/pdf.pdf");
        OutputStream outputStream = response.getOutputStream();
        byte[] buffer = new byte[4096];
        int bytesRead;
        while ((bytesRead = fileInputStream.read(buffer)) != -1) {
            outputStream.write(buffer, 0, bytesRead);
        }
        fileInputStream.close();
        outputStream.close();
    }
}

@WebServlet("/pdf")
public class PdfServlet extends HttpServlet {
    // ...
}