package cn.com.throughout.ecm_view.xml_serializer;
/**
* @author zhang jiarui
**/
import java.io.*;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
public class DOMSerializer {
private String indent; // 缩进的标志
private String lineSeparator; // 换行的标志
public DOMSerializer() {
indent = " ";
lineSeparator = "\n";
}
public void setLineSeparator(String lineSeparator) {
this.lineSeparator = lineSeparator;
}
// 以下重组的方法,用到递归责任链模式
public void serialize(Document doc, OutputStream out)
throws IOException {
Writer writer = new OutputStreamWriter(out);
serialize(doc, writer);
}
public void serialize(Document doc, File file)
throws IOException {
Writer writer = new FileWriter(file);
serialize(doc, writer);
}
public void serialize(Document doc, Writer writer)
throws IOException {
serializeNode(doc, writer, "");
writer.flush();
}
public void serializeNode(Node node, Writer writer, String indentLevel)
throws IOException {
// 按节点类型确定操作
switch(node.getNodeType()) {
case Node.DOCUMENT_NODE:
writer.write("<?xml version=\"1.0\" encoding=\"gb2312\" ?>");
writer.write(lineSeparator);
Document doc = (Document)node;
serializeNode(doc.getDocumentElement(), writer, ""); //得到根节点
break;
case Node.ELEMENT_NODE:
String name = node.getNodeName();
writer.write(indentLevel + "<" + name);
NamedNodeMap attributes = node.getAttributes();
for(int i=0; i<attributes.getLength(); i++) {
Node current = attributes.item(i);
String value = current.getNodeValue().replaceAll("&","&");
writer.write(" " + current.getNodeName() +
" = \"" + value + "\"");
}
writer.write(">");
// 以下遍历所有子节点
NodeList children = node.getChildNodes();
if(children != null) {
if(children.item(0) != null &&
(children.item(0).getNodeType() == Node.ELEMENT_NODE)) {
writer.write(lineSeparator);
}
for(int i=0; i<children.getLength(); i++) {
serializeNode(children.item(i), writer, indentLevel + indent);
}
if((children.item(0) != null) &&
(children.item(children.getLength()-1).getNodeType()==Node.ELEMENT_NODE)) {
writer.write(lineSeparator);
}
}
writer.write(indentLevel + "</" + name + ">");
writer.write(lineSeparator);
break;
case Node.TEXT_NODE:
String value = node.getNodeValue().replaceAll("&","&");
value = value.replaceAll("<","<");
value = value.replaceAll(">",">");
writer.write(value);
break;
case Node.CDATA_SECTION_NODE:
writer.write("<![CDATA[" + node.getNodeValue() + "]]>");
writer.write(lineSeparator);
break;
case Node.COMMENT_NODE:
writer.write(indentLevel + "<!-- " + node.getNodeValue() + " -->");
writer.write(lineSeparator);
break;
case Node.PROCESSING_INSTRUCTION_NODE:
writer.write("<?" + node.getNodeName() +
" " + node.getNodeValue() + "?>");
writer.write(lineSeparator);
break;
case Node.DOCUMENT_TYPE_NODE:
DocumentType docType = (DocumentType)node;
writer.write("<!DOCTYPE " + docType.getName());
if(docType.getPublicId() != null) {
System.out.println(" PUBLIC \"" + docType.getPublicId() + "\" ");
}
else {
writer.write(" SYSTEM ");
}
writer.write("\"" + docType.getSystemId() + "\">");
writer.write(lineSeparator);
break;
case Node.ENTITY_REFERENCE_NODE:
writer.write("&" + node.getNodeName() + ";");
break;
}
}
}
生成XML的必要类写法
[返回] 中文XML论坛 - 专业的XML技术讨论区 →
计算机技术与应用 → 『 Java/Eclipse 』 → 怎样用java程序从数据库生成.xml文件，着急啊
(订阅本版)
2004/8/16 16:37:00
新浪微博
