java

Remove XMP Metadata on PDF/A

由 夙愿已清 提交于 2021-02-19 22:27:39
问题 Is there a way wherein we can remove XMP metadata on a PDF/A Document without removing the PDF/A standardization? I found that using PdfReader reader = new PdfReader(src); PdfDictionary dict = reader.getCatalog(); dict.remove(PdfName.METADATA); dict.remove(PdfName.PROPERTIES); reader.removeUnusedObjects(); Removes both XMP and PDF/A. Is there a way to remove the XMP while retaining the standard or reintroducing PDF/A into the processed document? Thanks. 回答1: You can't remove the XMP

Remove XMP Metadata on PDF/A

由 ﹥＞﹥吖頭↗ 提交于 2021-02-19 22:27:14
问题 Is there a way wherein we can remove XMP metadata on a PDF/A Document without removing the PDF/A standardization? I found that using PdfReader reader = new PdfReader(src); PdfDictionary dict = reader.getCatalog(); dict.remove(PdfName.METADATA); dict.remove(PdfName.PROPERTIES); reader.removeUnusedObjects(); Removes both XMP and PDF/A. Is there a way to remove the XMP while retaining the standard or reintroducing PDF/A into the processed document? Thanks. 回答1: You can't remove the XMP

Remove XMP Metadata on PDF/A

由 我与影子孤独终老i 提交于 2021-02-19 22:26:08
问题 Is there a way wherein we can remove XMP metadata on a PDF/A Document without removing the PDF/A standardization? I found that using PdfReader reader = new PdfReader(src); PdfDictionary dict = reader.getCatalog(); dict.remove(PdfName.METADATA); dict.remove(PdfName.PROPERTIES); reader.removeUnusedObjects(); Removes both XMP and PDF/A. Is there a way to remove the XMP while retaining the standard or reintroducing PDF/A into the processed document? Thanks. 回答1: You can't remove the XMP

Remove XMP Metadata on PDF/A

由 孤者浪人 提交于 2021-02-19 22:25:54
问题 Is there a way wherein we can remove XMP metadata on a PDF/A Document without removing the PDF/A standardization? I found that using PdfReader reader = new PdfReader(src); PdfDictionary dict = reader.getCatalog(); dict.remove(PdfName.METADATA); dict.remove(PdfName.PROPERTIES); reader.removeUnusedObjects(); Removes both XMP and PDF/A. Is there a way to remove the XMP while retaining the standard or reintroducing PDF/A into the processed document? Thanks. 回答1: You can't remove the XMP

一文让你了解如何快速、优雅的实现导出Excel

由 半世苍凉 提交于 2021-02-19 20:51:12
前言： 春节假期刚刚过去，大家是不是已经开始了搬砖生活啦，嘻嘻 o(∩_∩)o ，可我还在休假中呢 ! 好啦，咱们言归正传，开始聊聊正文。做过后端管理系统的同学，大概率都会收到过实现 导出Excel 的功能需求，因为这个功能在后台管理系统中是个必备功能。 那大家是怎么实现这个功能的呢？ 使用Apache提供POI组件实现； 使用现成的、简便的第三方工具库（避免重复造轮子） Hutool 工具库中的Excel工具类 EasyExcel 阿里开源的基于Java的简单、省内存的读写Excel工具库 接下来咱们来聊聊使用 Hutool、EasyExcel 工具库实现导出Excel。 使用第三方库实现导出Excel 业界有句话：不重复造轮子。 使用工具类可以减少日常繁琐的编码，减少重复的编码时间，提高开发效率。 作为程序员，应该多善于利用工具减少代码冗余，美化自己的代码。 使用 Hutool 工具库实现导出Excel： 1、首先添加依赖 在pom.xml中添加上依赖： <!--hutool 导出 Excel 工具组件--> <dependency> <groupId>cn.hutool</groupId> <artifactId>hutool-all</artifactId> <version>5.1.0</version> </dependency> <!--POI组件-->

How does the System.arraycopy method work? [closed]

由 谁都会走 提交于 2021-02-19 18:31:50
问题 Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . Improve this question A sample of the statement to type when using the method is System.arraycopy(data, i, data, i+1, data.length-i-1); The way it works according to my book is that the system move all element from i onward one position up. But intuitively I will think that the

How does the System.arraycopy method work? [closed]

由 我们两清 提交于 2021-02-19 18:21:18
问题 Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . Improve this question A sample of the statement to type when using the method is System.arraycopy(data, i, data, i+1, data.length-i-1); The way it works according to my book is that the system move all element from i onward one position up. But intuitively I will think that the

How does the System.arraycopy method work? [closed]

由 爷，独闯天下 提交于 2021-02-19 18:11:01
问题 Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . Improve this question A sample of the statement to type when using the method is System.arraycopy(data, i, data, i+1, data.length-i-1); The way it works according to my book is that the system move all element from i onward one position up. But intuitively I will think that the

纯0基础Java自学 Java基础

由 萝らか妹 提交于 2021-02-19 17:42:45
纯0基础Java自学 Java基础 做Java开发，Java基础是最需要下功夫的一项，因为基础决定上层建筑，如果以后想要进阶却发现自己的基础不牢固，又要重新补习基础是一件很麻烦的事情，所以建议各位小伙伴在刚开始学习的时候就打好Java基础。 推荐一本书《JAVA核心技术 卷1》，入门书籍看这一本就够了，但是不用全部看完，把 数据类型、核心语法、面向对象、数组、集合、IO流、String/StringBuffer/StringBuilder、线程、并发、反射、泛型这些模块看完 就可以了，后面的Swing、applet等等就不需要看了。 当然如果你是零基础学习Java并理解力不是爆棚的话，我建议以视频学习为主。 如果是零基础普通人，看视频学习/看不懂源码/用百度/看中文博客来学习丢人。 ps:如果 看的视频讲师的语速不是特别快，建议倍速观看。 因为我是零基础，所以我在自学的时候是听的李明杰的《Java语言基础课》这个课程时间不算长。 我觉得完整听完可以比较扎实的掌握Java基础，当然了，如果想要彻底学会还是需要自己的运用。然后再回到第一步，看书或者继续学习课程。 我当时学习的时候是先看了一遍视频，然后又看了一遍书。毕竟我还是希望我的基础知识更加的扎实。 JavaWeb基础 学习好了Java基础，接下来就是JavaWeb基础。 JavaWeb是一系列技术的综合
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