From 0ff5e700b76068dcc0f6596417dfe24f259614be Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E8=B0=A2=E6=84=8F=E5=B8=86?= <1657098617@qq.com> Date: Fri, 8 Jul 2022 02:31:29 +0800 Subject: [PATCH] =?UTF-8?q?feat:=20=E4=BF=AE=E5=A4=8D=E6=9F=90=E4=BA=9B=20?= =?UTF-8?q?epub=20=E6=96=87=E4=BB=B6=E7=94=B1=E4=BA=8E=20opf=20=E6=A0=BC?= =?UTF-8?q?=E5=BC=8F=E4=B8=8D=E8=A7=84=E8=8C=83=E8=80=8C=E5=AF=BC=E8=87=B4?= =?UTF-8?q?=E6=AD=A3=E6=96=87=E5=9B=BE=E7=89=87=E8=AF=BB=E5=8F=96=E5=A4=B1?= =?UTF-8?q?=E8=B4=A5=E7=9A=84=E9=97=AE=E9=A2=98?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../epublib/epub/PackageDocumentReader.java | 61 +++++++++++++++++-- 1 file changed, 57 insertions(+), 4 deletions(-) diff --git a/epublib/src/main/java/me/ag2s/epublib/epub/PackageDocumentReader.java b/epublib/src/main/java/me/ag2s/epublib/epub/PackageDocumentReader.java index 06a44ba9b..d6982e189 100644 --- a/epublib/src/main/java/me/ag2s/epublib/epub/PackageDocumentReader.java +++ b/epublib/src/main/java/me/ag2s/epublib/epub/PackageDocumentReader.java @@ -72,6 +72,60 @@ public class PackageDocumentReader extends PackageDocumentBase { } } + /** + * + * 修复一些非标准epub格式由于 opf 文件内容不全而读取不到图片的问题 + * @author qianfanguojin + * @return ,修复图片路径后的一个Element列表 + */ + private static ArrayList ensureImageInfo(Resources resources, + Element manifestElement){ + ArrayList fixedElements = new ArrayList<>(); + //加入当前所有的 item 标签 + NodeList originItemElements = manifestElement + .getElementsByTagNameNS(NAMESPACE_OPF, OPFTags.item); + for (int i = 0; i < originItemElements.getLength(); i++) { + fixedElements.add((Element) originItemElements.item(i)); + } + + //如果有图片资源未定义在 originItemElements ,则加入该图片信息得到 fixedElements 中 + for (Resource resource : resources.getAll()) { + MediaType currentMediaType = resource.getMediaType(); + if ( currentMediaType == MediaTypes.JPG || currentMediaType == MediaTypes.PNG){ + String imageHref = resource.getHref(); + //确保该图片信息 resource 在原 originItemElements 列表中没有出现过 + boolean flag = false; + int i; + for (i = 0; i < originItemElements.getLength(); i++){ + Element itemElement = (Element) originItemElements.item(i); + String href = DOMUtil + .getAttribute(itemElement, NAMESPACE_OPF, OPFAttributes.href); + try { + href = URLDecoder.decode(href, Constants.CHARACTER_ENCODING); + } catch (UnsupportedEncodingException e) { + Log.e(TAG, e.getMessage()); + } + if (href.equals(imageHref)){ + break; + } + } + if (i == originItemElements.getLength()){ + flag = true; + } + if (flag){ + //由于暂时无法实例化一个Element,则选择克隆一个已存在的节点来修改以达到新增 Element 的效果,作为临时解决方案 + Element tempElement = (Element) manifestElement.getElementsByTagNameNS(NAMESPACE_OPF,OPFTags.item).item(0).cloneNode(true); + tempElement.setAttribute("id",imageHref.replace("/","")); + tempElement.setAttribute("href",imageHref); + tempElement.setAttribute("media-type", currentMediaType.getName()); + fixedElements.add(tempElement); + } + } + + + } + return fixedElements; + } /** * Reads the manifest containing the resource ids, hrefs and mediatypes. * @@ -96,10 +150,9 @@ public class PackageDocumentReader extends PackageDocumentBase { "Package document does not contain element " + OPFTags.manifest); return result; } - NodeList itemElements = manifestElement - .getElementsByTagNameNS(NAMESPACE_OPF, OPFTags.item); - for (int i = 0; i < itemElements.getLength(); i++) { - Element itemElement = (Element) itemElements.item(i); + List ensuredElements = ensureImageInfo(resources,manifestElement); + for (Element itemElement : ensuredElements) { +// Element itemElement = ; String id = DOMUtil .getAttribute(itemElement, NAMESPACE_OPF, OPFAttributes.id); String href = DOMUtil