Hl7引擎的目标主要是解决将数据按HL7协议的要求标准化,和标准业务的集成和不同系统间标准业务数据的同步。在多年的医院信息化过程中,HL7标准组织和解析最复杂了,下面是我用了多年HL7引擎解析,主要有两个版本1.C#,2.JAVA版的
引擎类:
package com.xxxx.hl7; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStreamWriter; import java.io.Writer; import java.util.List; import org.dom4j.Document; import org.dom4j.DocumentHelper; import org.dom4j.Element; import org.dom4j.Node; import org.dom4j.io.OutputFormat; import org.dom4j.io.XMLWriter; public class HL7ToXmlConverter { public static String ConvertToXml(String sHL7) { Document document = ConvertToXmlObject(sHL7); String hl7str = document.asXML(); return hl7str; } public static String ConvertToXml(Document document) { String hl7str = document.asXML(); return hl7str; } public static Document ConvertToXmlObject(String sHL7) { Document document = CreateXmlDoc(); //把HL7分成段 String[] sHL7Lines = sHL7.split("\n"); //去掉XML的关键字 for (int i = 0; i < sHL7Lines.length; i++) { sHL7Lines[i] = sHL7Lines[i].replace("^~\\&", "").replace("MSH", "MSH|"); } for (int i = 0; i < sHL7Lines.length; i++) { // 判断是否空行 if (sHL7Lines[i] != null) { String sHL7Line = sHL7Lines[i]; //通过/r 或/n 回车符分隔 String[] sFields = GetMessgeFields(sHL7Line); // 为段(一行)创建第一级节点 Element el = document.getRootElement().addElement(sFields[0]); // 循环每一行 Boolean isMsh = true; for (int a = 1; a < sFields.length; a++) { //是否包括HL7的连接符^~\\& if (sFields[a].indexOf('^') > 0 || sFields[a].indexOf('~') > 0 || sFields[a].indexOf('\\') > 0 || sFields[a].indexOf('&') > 0) { //0:如果这一行有任一分隔符 //开始操作~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ //通过~分隔 String[] sComponents = GetRepetitions(sFields[a]); if (sComponents.length > 1) { //1:如果可以分隔 0001^郭靖^体检号^EQ^AND~0002^东一区^病区号^EQ^AND for (int b = 0; b < sComponents.length; b++) { // Element fieldEl1 = el.addElement(sFields[0] + "." + a); CreateComponents(el, sComponents[b], sFields[0], a, b); } } else { //1:如果真的只有一个值的 0001^郭靖^体检号^EQ^AND // 为字段创建第二级节点 // Element fieldEl = el.addElement(sFields[0] + "." + a); CreateComponents(el, sFields[a], sFields[0], a, 0); //fieldEl.setText(sFields[a]+"11111111111111"); } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ } else { //0:如果这一行没有任何分隔符 // 为字段创建第二级节点 Element fieldEl = el.addElement(sFields[0] + "." + a); fieldEl.setText(sFields[a]); } } } //end if } //end for //修改MSH.1 和 MSH.2的值 document.selectSingleNode("HL7Message/MSH/MSH.1").setText("|"); document.selectSingleNode("HL7Message/MSH/MSH.2").setText("~^\\&"); // document.selectNodes("MSH/MSH.1"); return document; } @SuppressWarnings("unused") private static Element CreateComponents(final Element el, final String hl7Components, String sField, int a, int b) { Element componentEl = el.addElement(sField + "." + a); // Element componentEl =el;//.addElement(sField + "." + a + "." + b); //&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& //通过&分隔 String[] subComponents = GetSubComponents(hl7Components); if (subComponents.length > 1) { //2.如果有字组,一般是没有的。。。 子分组 用&很少用 } else { //2.如果没有了,就用^分组 String[] sRepetitions = GetComponents(hl7Components); if (sRepetitions.length > 1) { Element repetitionEl = null; for (int c = 0; c < sRepetitions.length; c++) { repetitionEl = componentEl.addElement(sField + "." + a + "." + (c + 1)); repetitionEl.setText(sRepetitions[c]); } } else { componentEl.setText(hl7Components); } } //&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& return el; } /// <summary> /// 通过|分隔 字段 /// </summary> /// <param name="s"></param> /// <returns></returns> private static String[] GetMessgeFields(String s) { return s.split("\\|"); } /// <summary> /// 通过^分隔 组字段 /// </summary> /// <param name="s"></param> /// <returns></returns> private static String[] GetComponents(String s) { return s.split("\\^"); } /// <summary> /// 通过&分隔 子分组组字段 /// </summary> /// <param name="s"></param> /// <returns></returns> private static String[] GetSubComponents(String s) { return s.split("&"); } /// <summary> /// 通过~分隔 重复 /// </summary> /// <param name="s"></param> /// <returns></returns> private static String[] GetRepetitions(String s) { return s.split("~"); } /// <summary> /// 创建XML对象 /// </summary> /// <returns></returns> private static Document CreateXmlDoc() { Document output = DocumentHelper.createDocument(); //生成一个接点 Element rootNode = output.addElement("HL7Message"); return output; } public static String GetText(Document document, String path) { Node node = document.selectSingleNode("HL7Message/" + path); if (node != null) { return node.getText(); } else { return null; } } public static String GetText(Document document, String path, int index) { List nodes = document.selectNodes("HL7Message/" + path); if (nodes != null) { return ((Node) nodes.get(index)).getText(); } else { return null; } } public static List GetTexts(Document document, String path) { List nodes = document.selectNodes("HL7Message/" + path); return nodes; } public static void writeDocument(Document document, String filepath) { try { //读取文件 // FileWriter fileWriter = new FileWriter(filepath); Writer writer = new OutputStreamWriter(new FileOutputStream(filepath), "utf-8"); //设置文件编码 OutputFormat xmlFormat = new OutputFormat(); xmlFormat.setEncoding("utf-8"); //创建写文件方法 XMLWriter xmlWriter = new XMLWriter(writer, xmlFormat); //写入文件 xmlWriter.write(document); //关闭 xmlWriter.close(); } catch(IOException e) { System.out.println("文件没有找到"); e.printStackTrace(); } } }
单元测试调用类:
String myHL7string = "MSH|^~\\&|455755610_0100||0200||20110624160404|000|QRY^A19^QRY_A19|0123456001|P|2.6\nQRD|||||||||0001^郭靖^体检号^EQ^AND~0002^东一区^病区号^EQ^AND\nQRF||20110627|20110803"; Document document = HL7ToXmlConverter.ConvertToXmlObject(myHL7string); //获取事件 String eventName = HL7ToXmlConverter.GetText(document, "MSH/MSH.9/MSH.9.3"); System.out.println("eventName:" + eventName); // List nodeValue = document.selectNodes("MSH.1"); String nodeValue = document.selectSingleNode("HL7Message/MSH/MSH.1").getText(); String nodeValue2 = document.selectSingleNode("HL7Message/MSH/MSH.3").getText(); // DocumentElement.SelectNodes(path); System.out.println(nodeValue + ":" + nodeValue2); String value = HL7ToXmlConverter.GetText(document, "QRD/QRD.9/QRD.9.1", 0); String value1 = HL7ToXmlConverter.GetText(document, "QRD/QRD.9/QRD.9.1", 1); String value2 = HL7ToXmlConverter.GetText(document, "QRD/QRD.9/QRD.9.1"); System.out.println(value + ":" + value1 + ":" + value2); List < Node > list = HL7ToXmlConverter.GetTexts(document, "QRD/QRD.9/QRD.9.1"); for (Node node: list) { System.out.println(":" + node.getText()); } System.out.println(HL7ToXmlConverter.ConvertToXml(myHL7string));
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