我希望java代码在浏览器上查看pdf文件而不下载它们 [英] i want java code to view pdf file on browser without downloading them

问题描述

我正在搜索java代码，无需下载即可在浏览器上查看pdf文件。这些文件将通过数据库插入。欢迎使用帮助。

i am searching for java code to view pdf file on browser without downloading them. The files will be inserted through database.Help will be appreciated.

推荐答案

您需要使用servlet来执行此操作：

You need to use a servlet to do that:

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

public class viewPDF extends HttpServlet {

    public void doGet(HttpServletRequest request, 
            HttpServletResponse response)
    throws ServletException, IOException {
        OutputStream out = null;
        DB1 db = new DB1();
        Connection conn=db.dbConnect(
                "jdbc:jtds:sqlserver://localhost:1433/smpp","sa","");

        try {

            response.setContentType("application/pdf");
            out = response.getOutputStream();
            byte[] b = db.getPDFData(conn);
            out.write(b,0,b.length);
            out.close();
        } catch (Exception e) {
            throw new ServletException(
                    "Exception in Excel Sample Servlet", e);
        } finally {
            if (out != null)
                out.close();
        }
    }

    public void doPost(HttpServletRequest request,
            HttpServletResponse response)
            throws IOException, ServletException {
        doGet(request, response);
    }
}

在此处查看更多信息以及使用的完整工作示例来自浏览器中数据库的PDF： java-tips

See more info here and a fully working example which uses a PDF from a database in a browser: java-tips

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