采用dom4j方式解析string類型的xml
xml: String string="<?xmlversion=\"1.0\" encoding=\"UTF-8\"?><ROOT><HEAD><INFO><BUSINESSNO>T065205072015000097</BUSINESSNO><BUSINESSTYPE>T</BUSINESSTYPE></INFO></HEAD></ROOT>";
時，報錯:Nested exception: org.xml.sax.SAXParseException: White space is required between the processing instruction target and data.
后來發現原來是xml格式有誤。xmlversion應改為xml version.即xml和version之間應該有一個空格。
改為
string="<?xml version=\"1.0\" encoding=\"UTF-8\"?><ROOT><HEAD><INFO><BUSINESSNO>T065205072015000097</BUSINESSNO><BUSINESSTYPE>T</BUSINESSTYPE></INFO></HEAD></ROOT>";就OK了。