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我嘗試使用dom4j訪問xml文件。我也嘗試過org.w3c的dom,但是這種方式失敗了。 我有一個xml文件的示例,我嘗試在下面閱讀。我嘗試從元素loc讀取屬性xlink:href,但由於某些原因,這總是失敗。當我在一個簡單的xml文件上嘗試相同的方法時,我自己寫了它,它確實有效。我已經爲此工作了好幾天了。這裏是我的方法:XPath搜索不起作用
File file = new File("schemas/pfs-2013-04-01-presentation.xml");
SAXReader reader = new SAXReader();
Document document = reader.read(file);
XPath xpath = document.createXPath("//loc");
Map uris = new HashMap();
uris.put("", "http://www.xbrl.org/2003/linkbase");
uris.put("xbrli","http://www.xbrl.org/2003/instance");
uris.put("xlink","http://www.w3.org/1999/xlink");
uris.put("xsi","http://www.w3.org/2001/XMLSchema-instance");
xpath.setNamespaceURIs(uris);
List<Node> nodes = xpath.selectNodes(xpath);
從這些'節點'我想稍後閱讀屬性。當我執行這個時,列表是空的。這是不明白的。
任何人都可以幫助我嗎? 感謝
<?xml version="1.0" encoding="UTF-8"?>
<linkbase xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:presentationAttribute="http://www.nbb.be/be/fr/pfs/presentationAttribute" >
<roleRef roleURI="http://www.nbb.be/be/fr/pfs/ci/role/FullIdentifyingData" xlink:type="simple" xlink:href="pfs-full-2013-04-01.xsd#FullIdentifyingData"/>
<roleRef roleURI="http://www.nbb.be/be/fr/pfs/ci/role/FullBalanceSheet" xlink:type="simple" xlink:href="pfs-full-2013-04-01.xsd#FullBalanceSheet"/>
<roleRef roleURI="http://www.nbb.be/be/fr/pfs/ci/role/FullIncomeStatement" xlink:type="simple" xlink:href="pfs-full-2013-04-01.xsd#FullIncomeStatement"/>
<roleRef roleURI="http://www.nbb.be/be/fr/pfs/ci/role/FullAppropriationsWithdrawings" xlink:type="simple" xlink:href="pfs-full-2013-04-01.xsd#FullAppropriationsWithdrawings"/>
<roleRef roleURI="http://www.nbb.be/be/fr/pfs/ci/role/FullDisclosures" xlink:type="simple" xlink:href="pfs-full-2013-04-01.xsd#FullDisclosures"/>
<roleRef roleURI="http://www.nbb.be/be/fr/pfs/ci/role/FullSocialBalanceSheet" xlink:type="simple" xlink:href="pfs-full-2013-04-01.xsd#FullSocialBalanceSheet"/>
<roleRef roleURI="http://www.nbb.be/be/fr/pfs/ci/role/FullValidationRules" xlink:type="simple" xlink:href="pfs-full-2013-04-01.xsd#FullValidationRules"/>
<roleRef roleURI="http://www.nbb.be/be/fr/pfs/ci/role/FullManagementReport" xlink:type="simple" xlink:href="pfs-full-2013-04-01.xsd#FullManagementReport"/>
<roleRef roleURI="http://www.nbb.be/be/fr/pfs/ci/role/FullAccountantsReport" xlink:type="simple" xlink:href="pfs-full-2013-04-01.xsd#FullAccountantsReport"/>
<presentationLink xlink:type="extended" xlink:role="http://www.nbb.be/be/fr/pfs/ci/role/FullIdentifyingData">
<loc xlink:type="locator" xlink:href="pfs-2013-04-01.xsd#pfs_IdentifyingData" xlink:label="IdentifyingData_1" />
<loc xlink:type="locator" xlink:href="pfs-gcd-2013-04-01.xsd#pfs-gcd_GlobalCommonDocument" xlink:label="GlobalCommonDocument_2" />
<loc xlink:type="locator" xlink:href="pfs-gcd-2013-04-01.xsd#pfs-gcd_EntityInformation" xlink:label="EntityInformation_3" />
<loc xlink:type="locator" xlink:href="pfs-gcd-2013-04-01.xsd#pfs-gcd_EntityName" xlink:label="EntityName_4" />
<loc xlink:type="locator" xlink:href="pfs-gcd-2013-04-01.xsd#pfs-gcd_EntityCurrentLegalName" xlink:label="EntityCurrentLegalName_5" />
您確定可以設置空白前綴嗎?在XPath中,它表示「無URI」名稱空間,任何其他名稱空間都必須有一個前綴。 – choroba