无法将char数据保存到MATLAB中的xml文件中
问题描述：
我想在MATLAB中修改svg文件的xml文本信息。 我改名为SVG文件到XML文件无法将char数据保存到MATLAB中的xml文件中
system('rename *myfile.svg* *myfile.xml')
得到了XML文本信息：
fid = fopen(‘myfile.xml');
XMLdata = fscanf(fid, '%s');
XMLDATA是一个包含XML文本信息 现在我可以修改XMLDATA使用STRCMP用于例如字符数组：
new_claim = strrep(XMLdata, 'Sans', 'Times New Roman')
现在我不能使用xmlwrite
写这篇XMLDATA XML文件xmlwrite('fileout.xml', XMLdata)
我得到错误使用javaMethod Java异常
发生错误：
javax.xml.transform.TransformerException: java.net.MalformedURLException: no protocol:
<?xmlversion="1.0"encoding="UTF-8"standalone="no"?><!--CreatedwithInkscape(http://www.inkscape.org/)--><svgxmlns:dc="http://purl.org/dc/elements/1.1/"xmlns:cc="http://creativecommons.org/ns#"xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"xmlns:svg="http://www.w3.org/2000/svg"xmlns="http://www.w3.org/2000/svg"xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"width="64"height="48"id="svg3033"version="1.1"inkscape:version="0.48.5r10040"sodipodi:docname="200mn.svg"><defsid="defs3035"/><sodipodi:namedviewid="base"pagecolor="#ffffff"bordercolor="#666666"borderopacity="1.0"inkscape:pageopacity="0.0"inkscape:pageshadow="2"inkscape:zoom="5.916495"inkscape:cx="61.898573"inkscape:cy="54.220135"inkscape:document-units="px"inkscape:current-layer="layer1"showgrid="false"inkscape:window-width="1280"inkscape:window-height="962"inkscape:window-x="-8"inkscape:window-y="-8"inkscape:window-maximized="1"/><metadataid="metadata3038"><rdf:RDF><cc:Workrdf:about=""><dc:format>image/svg+xml</dc:format><dc:typerdf:resource="http://purl.org/dc/dcmitype/StillImage"/><dc:title></dc:title></cc:Work></rdf:RDF></metadata><ginkscape:label="Layer1"inkscape:groupmode="layer"id="layer1"transform="translate(0,-1004.3622)"><textxml:space="preserve"style="font-size:28px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Calibri;-inkscape-font-specification:Calibri"x="1.3270224e-007"y="1035.7983"id="text3049"sodipodi:linespacing="125%"><tspansodipodi:role="line"id="tspan3051"x="1.3270224e-007"y="1035.7983">200m</tspan></text></g></svg>
at com.icl.saxon.IdentityTransformer.transform(IdentityTransformer.java:92)
at com.mathworks.xml.XMLUtils.serializeXML(XMLUtils.java:175)
at com.mathworks.xml.XMLUtils.serializeXML(XMLUtils.java:44)
Caused by: java.net.MalformedURLException: no protocol:
<?xmlversion="1.0"encoding="UTF-8"standalone="no"?><!--CreatedwithInkscape(http://www.inkscape.org/)--><svgxmlns:dc="http://purl.org/dc/elements/1.1/"xmlns:cc="http://creativecommons.org/ns#"xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"xmlns:svg="http://www.w3.org/2000/svg"xmlns="http://www.w3.org/2000/svg"xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"width="64"height="48"id="svg3033"version="1.1"inkscape:version="0.48.5r10040"sodipodi:docname="200mn.svg"><defsid="defs3035"/><sodipodi:namedviewid="base"pagecolor="#ffffff"bordercolor="#666666"borderopacity="1.0"inkscape:pageopacity="0.0"inkscape:pageshadow="2"inkscape:zoom="5.916495"inkscape:cx="61.898573"inkscape:cy="54.220135"inkscape:document-units="px"inkscape:current-layer="layer1"showgrid="false"inkscape:window-width="1280"inkscape:window-height="962"inkscape:window-x="-8"inkscape:window-y="-8"inkscape:window-maximized="1"/><metadataid="metadata3038"><rdf:RDF><cc:Workrdf:about=""><dc:format>image/svg+xml</dc:format><dc:typerdf:resource="http://purl.org/dc/dcmitype/StillImage"/><dc:title></dc:title></cc:Work></rdf:RDF></metadata><ginkscape:label="Layer1"inkscape:groupmode="layer"id="layer1"transform="translate(0,-1004.3622)"><textxml:space="preserve"style="font-size:28px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Calibri;-inkscape-font-specification:Calibri"x="1.3270224e-007"y="1035.7983"id="text3049"sodipodi:linespacing="125%"><tspansodipodi:role="line"id="tspan3051"x="1.3270224e-007"y="1035.7983">200m</tspan></text></g></svg>
at java.net.URL.<init>(Unknown Source)
at java.net.URL.<init>(Unknown Source)
at java.net.URL.<init>(Unknown Source)
at org.apache.xerces.impl.XMLEntityManager.setupCurrentEntity(Unknown Source)
at org.apache.xerces.impl.XMLVersionDetector.determineDocVersion(Unknown
Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at com.icl.saxon.IdentityTransformer.transform(IdentityTransformer.java:90)
... 2 more
java.net.MalformedURLException: no protocol:
<?xmlversion="1.0"encoding="UTF-8"standalone="no"?><!--CreatedwithInkscape(http://www.inkscape.org/)--><svgxmlns:dc="http://purl.org/dc/elements/1.1/"xmlns:cc="http://creativecommons.org/ns#"xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"xmlns:svg="http://www.w3.org/2000/svg"xmlns="http://www.w3.org/2000/svg"xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"width="64"height="48"id="svg3033"version="1.1"inkscape:version="0.48.5r10040"sodipodi:docname="200mn.svg"><defsid="defs3035"/><sodipodi:namedviewid="base"pagecolor="#ffffff"bordercolor="#666666"borderopacity="1.0"inkscape:pageopacity="0.0"inkscape:pageshadow="2"inkscape:zoom="5.916495"inkscape:cx="61.898573"inkscape:cy="54.220135"inkscape:document-units="px"inkscape:current-layer="layer1"showgrid="false"inkscape:window-width="1280"inkscape:window-height="962"inkscape:window-x="-8"inkscape:window-y="-8"inkscape:window-maximized="1"/><metadataid="metadata3038"><rdf:RDF><cc:Workrdf:about=""><dc:format>image/svg+xml</dc:format><dc:typerdf:resource="http://purl.org/dc/dcmitype/StillImage"/><dc:title></dc:title></cc:Work></rdf:RDF></metadata><ginkscape:label="Layer1"inkscape:groupmode="layer"id="layer1"transform="translate(0,-1004.3622)"><textxml:space="preserve"style="font-size:28px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Calibri;-inkscape-font-specification:Calibri"x="1.3270224e-007"y="1035.7983"id="text3049"sodipodi:linespacing="125%"><tspansodipodi:role="line"id="tspan3051"x="1.3270224e-007"y="1035.7983">200m</tspan></text></g></svg>
at java.net.URL.<init>(Unknown Source)
at java.net.URL.<init>(Unknown Source)
at java.net.URL.<init>(Unknown Source)
at org.apache.xerces.impl.XMLEntityManager.setupCurrentEntity(Unknown Source)
at org.apache.xerces.impl.XMLVersionDetector.determineDocVersion(Unknown
Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at com.icl.saxon.IdentityTransformer.transform(IdentityTransformer.java:90)
at com.mathworks.xml.XMLUtils.serializeXML(XMLUtils.java:175)
at com.mathworks.xml.XMLUtils.serializeXML(XMLUtils.java:44)
Error in xmlwrite (line 83)
javaMethod('serializeXML',...
答
xmlwrite是一个合作伙伴功能xmlread并与文档对象工作模型节点。如果你只想做一些简单的字符串替换，你可以这样做：
filename = 'myfile.svg';
XMLdata = fileread(filename);
new_claim = strrep(XMLdata, 'Sans', 'Times New Roman');
fid = fopen(filename, 'w+');
fwrite(fid, new_claim);
fclose(fid);
没有必要重命名文件。 fileread只是将文件读入一个字符串。 strrep返回修改后的字符串，所以它实际上是new_claim，您希望将其保存到文件中。由于您只是使用字符串，因此可以使用fwrite将新字符串保存到文件。
答
这个问题似乎是所有空间（或换行符）似乎有已从.svg中删除，因此无法正确识别XML标记（例如：而不是<svg xmlns ...您有<svgxmlns ...这是应该由</svg>等）被关闭
这似乎是确定添加的空间\在需要的地方休息后：
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!--CreatedwithInkscape(http://www.inkscape.org/)-->
<svg
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:cc="http://creativecommons.org/ns#"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:svg="http://www.w3.org/2000/svg"
xmlns="http://www.w3.org/2000/svg"
xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
width="64"
height="48"
id="svg3033"
version="1.1"
inkscape:version="0.48.5r10040"
sodipodi:docname="200mn.svg">
<defs
id="defs3035"/>
<sodipodi:namedview
id="base"
pagecolor="#ffffff"
bordercolor="#666666"
borderopacity="1.0"
inkscape:pageopacity="0.0"
inkscape:pageshadow="2"
inkscape:zoom="5.916495"
inkscape:cx="61.898573"
inkscape:cy="54.220135"
inkscape:document-units="px"
inkscape:current-layer="layer1"
showgrid="false"
inkscape:window-width="1280"
inkscape:window-height="962"
inkscape:window-x="-8"
inkscape:window-y="-8"
inkscape:window-maximized="1"/>
<metadata
id="metadata3038">
<rdf:RDF>
<cc:Work rdf:about="">
<dc:format>image/svg+xml</dc:format>
<dc:type rdf:resource="http://purl.org/dc/dcmitype/StillImage"/>
<dc:title></dc:title>
</cc:Work>
</rdf:RDF>
</metadata>
<g
inkscape:label="Layer1"
inkscape:groupmode="layer"
id="layer1"
transform="translate(0,-1004.3622)">
<text
xml:space="preserve"
style="font-size:28px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Calibri;-inkscape-font-specification:Calibri"
x="1.3270224e-007"
y="1035.7983"
id="text3049"
sodipodi:linespacing="125%">
<tspan
sodipodi:role="line"
id="tspan3051"
x="1.3270224e-007"
y="1035.7983">200m</tspan>
</text>
</g>
</svg>
+0
谢谢你的回复。我得到了解决方案，这可以通过sclarke81回复的fwrite函数完成。我可以通过使用该代码来更改字体。我发现你的回复是信息丰富的，谢谢！ – Bini 2014-09-10 16:12:37
我没有任何使用'xmlwrite'的经验，但看着[文档]（http://www.mathworks.com/help/matlab/ref/xmlwrite.html）它看起来不像它接受一个字符串输入。 – excaza 2014-09-10 12:02:24
@excaza你是正确的，是否有任何方法来写一个修改后的char数据类型'new_claim'的XML文件？ – Bini 2014-09-10 12:07:32