不容許有匹配 "[xX][mM][lL]" 的處理指令目標

Bug解決方案：org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 8; 不容許有匹配 "[xX][mM][lL]" 的處理指令目標

Caused by: org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 8; 不容許有匹配 "[xX][mM][lL]" 的處理指令目標。
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:203)
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(ErrorHandlerWrapper.java:177)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:441)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:368)
at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(XMLScanner.java:1436)
at com.sun.org.apache.xerces.internal.impl.XMLScanner.scanPIData(XMLScanner.java:723)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanPIData(XMLDocumentFragmentScannerImpl.java:1018)
at com.sun.org.apache.xerces.internal.impl.XMLScanner.scanPI(XMLScanner.java:691)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:912)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:606)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:117)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:848)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:243)
at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:348)
at org.springframework.beans.factory.xml.DefaultDocumentLoader.loadDocument(DefaultDocumentLoader.java:75)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:388)
... 14 more

問題解析：遇到這樣的bug是由於xml文件第一句出錯。

解決方法：

一、確保xml的第一句<?xml version="1.0" encoding="UTF-8"?>以前沒有空格。

二、複製網上的xml文件的時候，建議這一句<?xml version="1.0" encoding="UTF-8"?>不要複製，保留生成文件的時候生成的這句代碼<?xml version="1.0" encoding="UTF-8"?>，這樣就能避免這種bug出現。