Home > Article > Backend Development > xml learning (1) several file formats of xml
1. Let’s briefly introduce XML. XML is a text-based markup language, similar to HTML, which can easily store data.
2. Several formats of XML files:
Format 1: View an XML CD directory
Empire Burlesque Bob Dylan USA Columbia 10.90 1985 Hide your heart Bonnie Tyler UK CBS Records 9.90 1988
Format 2: View an XML school grade directory
3, Analysis:
1.xml can only have one root-level element and cannot have multiple root-level elements. , for example, if you add another root-level element 7dad763e19e697e26a84dcd2c2dc50c062dd55d7eb7ac9391add251a3b7514f1 in format 2, an error will be reported
2.xml elements can be nested in a loop. The parent element contains child elements, and the child element Level elements can contain their own child elements,
For example, format 1: root element34827478705dcb4b6514b72495dec9623a165eef81323bff4941679ce801be6fcontains child elements3bf68e1f532e22971c4f333c467586f5, and d15114bf3dc8d8fe2e2887944c735e50e31671ff5b3c139d436cc2f6b83f000bchild elements can contain multiple child elements of their own
3. Both elements Medium form:
Form 1a6f07ccb7850d17838ce11a97d8f08b6[Value]5f0d23c9ae3aeefd437eff4b71ab32cf For example:b2386ffb911b14667cb8f0f91ea547a7Article title6e916e0f7d1e588d4f442bf645aedb2f
Form 2c1128071b8678675ecc6830a3de146ec
For example:
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