一，dom4j方式XML文件写入
public boolean createXML() {
XMLWriter writer = null;
OutputFormat format = OutputFormat.createPrettyPrint();
format.setEncoding("utf-8");
Document document = DocumentHelper.createDocument();
Element tranData = document.addElement("TranData");
Element baseInfo = tranData.addElement("BaseInfo");
baseInfo.addElement("MakeDate").setText(mMakeDate);
baseInfo.addElement("MakeTime").setText(mMakeTime);
Element inquireInfo = tranData.addElement("InquireInfo");
inquireInfo.addElement("NoteDate").setText(mMakeDate);
inquireInfo.addElement("NoteTime").setText(mMakeTime);
File file = new File("C:\\Users\\Administrator\\Desktop\\commonRecord.xml");
if (!file.getParentFile().exists()) {
file.getParentFile().mkdirs();
}
try {
writer = new XMLWriter(new FileOutputStream(file), format);
writer.write(document);
writer.close();
} catch (Exception e) {
e.printStackTrace();
}
return true;
}
二，dom4j方式XML读取
public boolean ReadXml（）{
SAXReader reader = new SAXReader();
Document document = reader.read(new File("books.xml"));
Element root = document.getRootElement();
Iterator it = root.elementIterator();
while (it.hasNext()) {
Element element = (Element) it.next();
//未知属性名称情况下
Iterator attrIt = element.attributeIterator();
while (attrIt.hasNext()) {
Attribute a = (Attribute) attrIt.next();
System.out.println(a.getValue());
}
//未知元素名情况下
Iterator eleIt = element.elementIterator();
while (eleIt.hasNext()) {
Element e = (Element) eleIt.next();
System.out.println(e.getName() + ": " + e.getText());
}
}
}
三，OutputStreamWriter写入
OutPutStreamWriter out = new OutPutStreamWriter(new FileOutputStream(writerFile),"UTF-8");
out.write("<?xml version=\"1.0\" encoding=\"GBK\"?>");
out.write("<BaseInfo>")
out.write("<MakeDate>2019-04-05</MakeDate>");
out.write("<MakeDate>\n");
out.write("</BaseInfo>")
out.flush();
out.close();
四，字符转为xml并解析
public boolean toStrXml(String reXmlStr) {
org.dom4j.Document doc = null;
try {
doc=(Document) DocumentHelper.parseText(reXmlStr);
} catch (DocumentException e) {
e.printStackTrace();
}
Element rootElt = doc.getRootElement();
if (rootElt==null) {
return false;
}
String tCompanyCode=rootElt.element("ele1").element("ele2").getText();
}
五，DocumentBuilderFactory读取字符的方式读取
public boolean getXMLInfo(String tInqXML) {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
try {
StringReader sr = new StringReader(tInqXML);
InputSource is = new InputSource(sr);
DocumentBuilder builder = factory.newDocumentBuilder();
org.w3c.dom.Document mDoc = builder.parse(is);
org.w3c.dom.Element mElement = mDoc.getDocumentElement();
this.mMakeDate = mElement.getElementsByTagName("MakeDate").item(0)
.getFirstChild()==null?"":mElement.getElementsByTagName("MakeDate")
.item(0).getFirstChild().getNodeValue();
this.mMakeTime = mElement.getElementsByTagName("MakeTime").item(0)
.getFirstChild()==null?"":mElement.getElementsByTagName("MakeTime")
.item(0).getFirstChild().getNodeValue();
}catch (Exception e) {
e.printStackTrace();
}
}
五，读取续写或新建
createOrWriteFileList("111", "C:\\Users\\Administrator\\Desktop\\123", "C:\\Users\\Administrator\\Desktop\\Index\\123.xml");
public static boolean createOrWriteFileList(String applyNo, String batchPath,String xmlPath){
File Indexfiles = new File(batchPath+"/index"); //文件
File fileList = new File(batchPath+"/FileList.xml"); //FileList详情文件
File xmlFile = new File(xmlPath); //新增xml文件
XMLWriter writer = null;
OutputFormat format = OutputFormat.createPrettyPrint();
format.setEncoding("utf-8");
org.dom4j.Document document = null;
org.dom4j.Element addEle = null;
if(fileList.exists()){
SAXReader reader = new SAXReader();
try {
document = reader.read(fileList);
org.dom4j.Element root = document.getRootElement();
root.element("MakeDate").setText("312");
root.element("MakeTime").setText("123");
List<org.dom4j.Element> listEles = root.selectNodes("/FileList/LP/FILES");
org.dom4j.Element filesList = listEles.get(0);
org.dom4j.Element countEle = filesList.element("FILECOUNT");
countEle.setText(String.valueOf(Integer.valueOf(countEle.getText())+1));
addEle = filesList.addElement("FILE");
} catch (Exception e) {
e.printStackTrace();
}
}else{
document = DocumentHelper.createDocument();
org.dom4j.Element tranData = document.addElement("FileList");
tranData.addElement("MakeDate").setText("2018-12-26");
tranData.addElement("MakeTime").setText("12:12:12");
org.dom4j.Element LP = tranData.addElement("LP");
org.dom4j.Element files = LP.addElement("FILES");
if(!Indexfiles.exists()){
files.addElement("FILECOUNT").setText("0");
}else{
File [] fs = Indexfiles.listFiles();
if(fs == null || fs.length == 0){
files.addElement("FILECOUNT").setText("0");
}else{
files.addElement("FILECOUNT").setText(String.valueOf(fs.length));
addEle= files.addElement("FILE");
}
}
}
addEle.addElement("CLMNO").setText(applyNo);
addEle.addElement("FILENAME").setText(xmlFile.getName());
addEle.addElement("FILEPATH").setText("/"+xmlFile.getParentFile().getName());
addEle.addElement("FILESIZE").setText(String.valueOf(xmlFile.length()));
try {
writer = new XMLWriter(new FileOutputStream(fileList), format);
writer.write(document);
writer.close();
} catch (Exception e) {
e.printStackTrace();
}
return true;
}
六，读取文件内容并转码
private String readString(String FILE_IN){
String str="";
File file=new File(FILE_IN);
try {
FileInputStream in=new FileInputStream(file);
int size=in.available();
byte[] buffer=new byte[size];
in.read(buffer);
in.close();
str=new String(buffer,"GBK"); //和要求保持一致
} catch (IOException e) {
return null;
}
return str;
}