xml bianji
这是删除接点的例子
import java.awt.*;
import java.awt.event.*;
import org.apache.xerces.parsers.DOMParser;
import org.xml.sax.SAXException;
import java.awt.*;
import java.awt.event.*;
import org.apache.xerces.parsers.DOMParser;
import org.xml.sax.SAXException;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import java.io.IOException;
import org.w3c.dom.NamedNodeMap;
import java.io.*;
import org.w3c.dom.*;
import org.apache.xerces.dom.*;
import org.apache.xml.serialize.*;
import org.apache.xerces.parsers.DOMParser;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
class TjNode extends Frame {
public static void main(String args[]) {
DocumentBuilder parser;
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
try{
parser = factory.newDocumentBuilder();
Document doc = parser.parse( "system_file.xml ");
NodeList newKey=doc.getElementsByTagName( "Name ");
for(int i=0;i <newKey.getLength();i++){
Node aNode=newKey.item(i);
String newString= aNode.getFirstChild().getNodeValue().toString();
System.out.println(newString);
if(newString.equals( "dfg ")){
aNode.getParentNode().removeChild(aNode);
}
}
File _outputFile=new File( "system_file.xml ");
OutputFormat outputFormat=new OutputFormat( "XML ", "gb2312 ",true);
FileWriter fileWriter=new FileWriter(_outputFile);
XMLSerializer xmlSerializer=new XMLSerializer(fileWriter,outputFormat);
xmlSerializer.asDOMSerializer();
xmlSerializer.serialize(doc.getDocumentElement());
}catch (Exception evc){
System.out.println(evc.toString());
}
}
}
这是更新的例子
DocumentBuilder parser;
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
try{
parser = factory.newDocumentBuilder();
Document doc = parser.parse( "system_file.xml ");
Element Name=doc.createElement( "Name ");
Name.setAttribute( "savepath ",pathText.getText());
Name.setAttribute( "savesystem ",system_String);
Name.appendChild(doc.createTextNode(treenameText.getText()));
doc.getDocumentElement().appendChild(Name);
File _outputFile=new File( "system_file.xml ");
OutputFormat outputFormat=new OutputFormat( "XML ", "gb2312 ",true);
FileWriter fileWriter=new FileWriter(_outputFile);
XMLSerializer xmlSerializer=new XMLSerializer(
fileWriter,outputFormat);
xmlSerializer.asDOMSerializer();
xmlSerializer.serialize(doc.getDocumentElement());
getnewtreeNode=treenameText.getText();
}catch (Exception evc){
System.out.println(evc.toString());
}
写xml一样看看就可以了。
这些包在jbuilder内都有。
或者去http://jakarta.apache.org下载
这个例子是把xml文件变成javabean
import org.apache.xerces.parsers.SAXParser;
import org.xml.sax.InputSource;
import java.io.FileInputStream;
import java.util.Hashtable;
import java.util.Enumeration;
import org.xml.sax.helpers.DefaultHandler;
import org.xml.sax.Attributes;
class Employee{
private String id= " ";
private Profile profile=null;
public void setId(String newId){
id=newId;
}
public String getId(){
return id;
}
public void setProfile(Profile newProfile){
profile=newProfile;
}
public String toString(){
return "Employee: "+id+ "/n "
+profile.getFirstName()+ "/n "
+profile.getLastName();
}
}
class Profile{
String firstName= " ";
String lastName= " ";
public void setFirstName(String newFirstName){
firstName=newFirstName;
}
public String getFirstName(){
return firstName;
}
public void setLastName(String newLastName){
lastName=newLastName;
}
public String getLastName(){
return lastName;
}
}
class EmployeeBuilder extends DefaultHandler{
private Hashtable employeeList=null;
private Employee employee=null;
private Profile profile=null;
public void startDocument(){
employeeList=new Hashtable();
}
public void endElement(String nameSpaceURI,String name,
String qName){
if(name.equals( "employee ")){
employeeList.put(employee.getId(),employee);
}
}
public void startElement(String namespaceURI,String name,
String qName,Attributes atts){
if(name.equals( "employee ")){
employee=new Employee();
employee.setId(atts.getValue( "id "));
}
if(name.equals( "profile ")){
profile=new Profile();
profile.setFirstName(atts.getValue( "firstName "));
profile.setLastName(atts.getValue( "lastName "));
employee.setProfile(profile);
}
}
public Hashtable getEmployess(){
return employeeList;
}
}
class SAXEmployeeExample1{
public static void main(String args[]){
EmployeeBuilder eBuilder=new EmployeeBuilder();
try{
SAXParser saxParser=new SAXParser();
saxParser.setContentHandler(eBuilder);
saxParser.parse(new InputSource(
new FileInputStream( "employees.xml ")));
Hashtable employees=eBuilder.getEmployess();
Enumeration emps=employees.elements();
while(emps.hasMoreElements()){
Employee employee=(Employee)emps.nextElement();
System.out.println(employee);
}
}catch(Exception ex){
System.out.println(ex);
}
}
}
xml文件
<?xml version= "1.0 "?>
<employees>
<employee id= "A124-567 ">
<profile firstName= "Joe " lastName= "Coder "/>
</employee>
<employee id= "A1234-789 ">
<profile firstName= "Danny " lastName= "shi "/>
</employee>
</employees>
由于不是很清楚你的想法,所有多写了点.
dom解析，用
try{
DocumentBuilderFactory factory=DocumentBuilderFactory.newInstance();
DocumentBuilder builder=factory.newDocumentBuilder();
doc=builder.newDocument();
//获得TopicID
int i = TaminoWrapper.GetUniqueID(dbURL);
TopicID=String.valueOf(i);
ParentID=TopicID;
Element root=doc.createElement( "TOPIC ");
Element Issue1=doc.createElement( "Issue ");
Element RootID1=doc.createElement( "RootID ");
RootID1.appendChild(doc.createTextNode( "100 "));
Issue1.appendChild(RootID1);
Element ParentID1=doc.createElement( "ParentID ");
ParentID1.appendChild(doc.createTextNode(ParentID));
Issue1.appendChild(ParentID1);
Element TopicName1=doc.createElement( "TopicName ");
TopicName1.appendChild(doc.createTextNode(TopicName));
Issue1.appendChild(TopicName1);
Element AuthorName1=doc.createElement( "AuthorName ");
AuthorName1.appendChild(doc.createTextNode(AuthorName));
Issue1.appendChild(AuthorName1);
Element TopicID1=doc.createElement( "TopicID ");
TopicID1.appendChild(doc.createTextNode(TopicID));
Issue1.appendChild(TopicID1);
Element AuthorID1=doc.createElement( "AuthorID ");
AuthorID1.appendChild(doc.createTextNode( "50 "));
Issue1.appendChild(AuthorID1);
Element content1=doc.createElement( "content ");
content1.appendChild(doc.createTextNode(content));
Issue1.appendChild(content1);
Element upDateTime1=doc.createElement( "upDateTime ");
upDateTime1.appendChild(doc.createTextNode(upDateTime));
Issue1.appendChild(upDateTime1);
Element ReplyTimes1=doc.createElement( "ReplyTimes ");
ReplyTimes1.appendChild(doc.createTextNode( "0 "));
Issue1.appendChild(ReplyTimes1);
Element Mark1=doc.createElement( "Mark ");
Mark1.appendChild(doc.createTextNode(Mark));
Issue1.appendChild(Mark1);
Element BBSname1=doc.createElement( "BBSname ");
BBSname1.appendChild(doc.createTextNode(BBSname));
Issue1.appendChild(BBSname1);
Element ViewTimes1=doc.createElement( "ViewTimes ");
ViewTimes1.appendChild(doc.createTextNode( "0 "));
Issue1.appendChild(ViewTimes1);
Element SignName1=doc.createElement( "SignName ");
String Value=getUser.getUser( "SignName ",AuthorName);
SignName1.appendChild(doc.createTextNode(Value));
Issue1.appendChild(SignName1);
Element Photo1=doc.createElement( "Photo ");
Value=getUser.getUser( "Photo ",AuthorName);
Photo1.appendChild(doc.createTextNode(Value));
Issue1.appendChild(Photo1);
Element NickName1=doc.createElement( "NickName ");
Value=getUser.getUser( "NickName ",AuthorName);
NickName1.appendChild(doc.createTextNode(Value));
Issue1.appendChild(NickName1);
Element Rank1=doc.createElement( "Rank ");
Value=getUser.getUser( "Rank ",AuthorName);
Rank1.appendChild(doc.createTextNode(Value));
Issue1.appendChild(Rank1);
Element BBSID1=doc.createElement( "BBSID ");
BBSID1.appendChild(doc.createTextNode(BBSID));
Issue1.appendChild(BBSID1);
Element SortTime1=doc.createElement( "SortTime ");
SortTime1.appendChild(doc.createTextNode(SortTime));
Issue1.appendChild(SortTime1);
root.appendChild(Issue1);
doc.appendChild(root);
try{
TaminoWrapper.Process(dbURL,doc, "BBS_topic ");
}
catch(Exception ee)
{out.println( "提交失败 ");return;
}
}
}
catch(Exception ex)
{out.println( "用户名错误 ");
}
类似我这样的代码可以把xml树组在内存里
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两位前辈：
写xml目前已经不是我的问题了,关于那个包,我同学给我提供了jbuild下的一个叫xer**的包 用dom方法也把xml写出来了，但是现在我写的这个xml有个问题，就是我加属性的顺序和我在ie下显示的顺序不一致 例子: ****** Element root=doc.createElement( "root "); root.setAttribute( "c ", "3 ");//先加入的是c root.setAttribute( "a ", "1 ");//再是a root.setAttribute( "d ", "4 ");//再是d root.setAttribute( "b ", "2 ");//最后是b **** 假设生成a.xml文件 前辈们:我预期想得到的是这样的文件 <root c= '3 ',a= '1 ',d= '4 ',b= '2 '/> 即按照我加入属性的先后顺序显示 然而 ie下显示却是这样 <root a= '1 ',b= '2 ',c= '3 ',d= '4 '/> 这样的话不是我预期要的东东 希望大家给个解决方案 |