OAF_文件系列6_实现OAF导出XML文件javax.xml.parsers/transformer（案例）-白红宇

20150803 Created By BaoXinjian

一、摘要

通过javax.xml.parsers和javax.xml.parsers产生XML文件

此过程需要用到一些包方法

1. File：创建XML文件

2. DocumentBuilderFactory / DocumentBuilder ：创建XML文件，并创建根节点

3. 创建节点

3.1 document.createElement：创建节点

3.2 document.createTextNode("INTERAL")：设置节点文本

3.3 element.appendChild(empnum)：设置节点属性

二、实现分析

1. 创建exportEmployee.java程序

2. 实现解析的主要过程

package bxj.oracle.apps.ap.java;import java.io.File;import java.io.FileOutputStream;import java.io.OutputStreamWriter;import java.io.Writer;import javax.xml.parsers.DocumentBuilder;import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.transform.OutputKeys;import javax.xml.transform.Result;import javax.xml.transform.Source;import javax.xml.transform.Transformer;import javax.xml.transform.TransformerConfigurationException;import javax.xml.transform.TransformerException;import javax.xml.transform.TransformerFactory;import javax.xml.transform.dom.DOMSource;import javax.xml.transform.stream.StreamResult;import org.w3c.dom.Document;import org.w3c.dom.Element;import org.w3c.dom.Text;public class exportEmployeeXML {    private void ExportEmployeeXML() {            try         {          //创建文件          File empxmlfile = new File("/u2/VIS/visappl/gavin/employeexml/employeewxml.xml");          DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();          DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();          Document doc = docBuilder.newDocument();                    //创建根节点          Element root = doc.createElement("Header");           doc.appendChild(root);                    //创建EMPLOYEE节点          Element emp = doc.createElement("EMPLOYEE");           root.appendChild(emp);                     //创建EMPLOYEE明细节点          Element empid = doc.createElement("EMPLOYEEID");           emp.appendChild(empid);          Text empid_text = doc.createTextNode("1");           empid.appendChild(empid_text);                    Element empnum = doc.createElement("EMPLOYEENUM");           emp.appendChild(empnum);          Text empnum_text = doc.createTextNode("FS_0001");           empnum.appendChild(empnum_text);                    Element empname = doc.createElement("EMPLOYEENAME");           empname.setAttribute("GENDER","MALE");          emp.appendChild(empname);          Text empname_text = doc.createTextNode("BaoXinjian");           empname.appendChild(empname_text);                    Element emptype = doc.createElement("EMPLOYEETYPE");           emp.appendChild(emptype);          Text emptype_text = doc.createTextNode("INTERAL");           emptype.appendChild(emptype_text);                    Element empcountry = doc.createElement("COUNTRY");           emp.appendChild(empcountry);          Text empcountry_text = doc.createTextNode("CN");           empcountry.appendChild(empcountry_text);                    Element empaddr = doc.createElement("ADDRESS");           emp.appendChild(empaddr);          Text empaddr_text = doc.createTextNode("Hangzhou");           empaddr.appendChild(empaddr_text);                    Element empdesc = doc.createElement("DESCRIPTION");           emp.appendChild(empdesc);          Text empdesc_text = doc.createTextNode("Test Employee XML Export");           empdesc.appendChild(empdesc_text);                    //打开文件流          FileOutputStream fos = new FileOutputStream(empxmlfile);           OutputStreamWriter osw = new OutputStreamWriter(fos);           callDomWriter(doc, osw, "UTF-8");           osw.close();           fos.close();         }        catch (Exception ex)        {          ex.printStackTrace();        }       }        //文件转换    public void callDomWriter(Document doc, Writer writer, String encoding) {         try         {           Source source = new DOMSource(doc);           Result res = new StreamResult(writer);           Transformer xformer = TransformerFactory.newInstance().newTransformer();           xformer.setOutputProperty(OutputKeys.ENCODING, encoding);           xformer.transform(source, res);         }catch (TransformerConfigurationException e) {            e.printStackTrace();         } catch (TransformerException e) {            e.printStackTrace();         }                   }     public exportEmployeeXML() {    }    public static void main(String[] args) {        System.out.println("gavin main Start");        exportEmployeeXML exportEmployeeXML = new exportEmployeeXML();            exportEmployeeXML.ExportEmployeeXML();        System.out.println("gavin main End");    }}

三、运行测试

1. 运行测试

2. 确定是否在本地所创建的XML文件

3. 查看所常见的XML文件，并无问题

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