XML解析器——DOM
1)DOM(JAXPCrimson解析器) 2) Dom解释器是由W3C官方制定的标准解释器Api.只要符合该标准的编程接口都可以用来操作XML.目前该解释器主要有三个级别.Level1Level2Level3这里只讨论到Level2.Dom模型实际上是把XML文件中的数据转变成了内存中的一颗树.该树大体有Doument,Note,NodeList,Element这些对象构成.而Dom则是负责分析这颗树的结构,然后通过解释树从而起到了解释XML文档的作用. 下面来看实例:
对应的javabean
package com.lr.bean; public class BookInfo { private String id; private String bookName; private String price; private String bookPub; public String getId() { return id; } public void setId(String id) { this.id = id; } public String getBookName() { return bookName; } public void setBookName(String bookName) { this.bookName = bookName; } public String getPrice() { return price; } public void setPrice(String price) { this.price = price; } public String getBookPub() { return bookPub; } public void setBookPub(String bookPub) { this.bookPub = bookPub; } @Override public int hashCode() { final int prime = 31; int result = 1; result = prime * result + ((bookName == null) ? 0 : bookName.hashCode()); result = prime * result + ((bookPub == null) ? 0 : bookPub.hashCode()); result = prime * result + ((id == null) ? 0 : id.hashCode()); result = prime * result + ((price == null) ? 0 : price.hashCode()); return result; } @Override public boolean equals(Object obj) { if (this == obj) return true; if (obj == null) return false; if (getClass() != obj.getClass()) return false; BookInfo other = (BookInfo) obj; if (bookName == null) { if (other.bookName != null) return false; } else if (!bookName.equals(other.bookName)) return false; if (bookPub == null) { if (other.bookPub != null) return false; } else if (!bookPub.equals(other.bookPub)) return false; if (id == null) { if (other.id != null) return false; } else if (!id.equals(other.id)) return false; if (price == null) { if (other.price != null) return false; } else if (!price.equals(other.price)) return false; return true; } @Override public String toString() { return id+"t"+bookName+"t"+price+"t"+bookPub+"n"; } }
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