HL7 2.X解析(JAVA版)

https://blog.csdn.net/ycyangcai/article/details/6643784

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。

 本次公开JAVA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(" ");


//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 QRD|||||||||0001^郭靖^体检号^EQ^AND~0002^东一区^病区号^EQ^AND QRF||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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版权声明：本文为CSDN博主「yanick」的原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/ycyangcai/article/details/6643784