红帽全球峰会47.4. 使用 HAPI 的 HL7v2 Model
HL7v2 模型使用 HAPI 库中的 Java 对象。使用这个库，您可以对大多数用于 HL7v2 的 EDI 格式(ER7)进行编码和解码。
以下示例是查找具有病人 ID 0101701234 的病人的请求。
MSH|^~\\&|MYSENDER|MYRECEIVER|MYAPPLICATION||200612211200||QRY^A19|1234|P|2.4 QRD|200612211200|R|I|GetPatient|||1^RD|0101701234|DEM||
MSH|^~\\&|MYSENDER|MYRECEIVER|MYAPPLICATION||200612211200||QRY^A19|1234|P|2.4
QRD|200612211200|R|I|GetPatient|||1^RD|0101701234|DEM||
使用 HL7 模型，您可以使用 ca.uhn.hl7v2.model.Message 对象，例如检索一个病人 ID：
Message msg = exchange.getIn().getBody(Message.class);
QRD qrd = (QRD)msg.get("QRD");
String patientId = qrd.getWhoSubjectFilter(0).getIDNumber().getValue(); // 0101701234
Message msg = exchange.getIn().getBody(Message.class);
QRD qrd = (QRD)msg.get("QRD");
String patientId = qrd.getWhoSubjectFilter(0).getIDNumber().getValue(); // 0101701234
这在与 HL7 侦听器结合使用时非常强大，因为您不必使用 byte[]、String 或任何其他简单对象格式。您只能使用 HAPI HL7v2 模型对象。如果您事先知道消息类型，您可以输入更多类型：
QRY_A19 msg = exchange.getIn().getBody(QRY_A19.class); String patientId = msg.getQRD().getWhoSubjectFilter(0).getIDNumber().getValue();
QRY_A19 msg = exchange.getIn().getBody(QRY_A19.class);
String patientId = msg.getQRD().getWhoSubjectFilter(0).getIDNumber().getValue();
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