SOAP中不支持HashMap,但可以通过适配器将数组转换成HashMap的方式来支持。
这是通过JAXB2.0中一个适配器类来转换的,先看下这个类的说明:
javax.xml.bind.annotation.adapters
类 XmlAdapter<ValueType,BoundType>
javax.xml.bind.annotation.adapters.XmlAdapter<ValueType,BoundType>
- 类型参数:
BoundType
- JAXB 不知道如何处理的一些类型。编写一个适配器,以便允许通过 ValueType 将此类型用作内存表示形式。
ValueType
- JAXB 无需其他操作便知道如何处理的类型。
这样,我们先定义一个用来传送数据的通用数组,包含了KEY和VALUE两个成员用来存MAP的项:
public class OtherValues {
public OtherValues () {};
public OtherValues (String key, String value) {
this.key = key;
this.value = value;
};
public String key;
public String value;
}
再定义一个转换类:(数组到HashMap的转换)
import java.util.HashMap;
import java.util.Map.Entry;
import org.apache.log4j.Logger;
import javax.xml.bind.annotation.adapters.XmlAdapter;
public class OtherValuesAdapter extends XmlAdapter<OtherValues[], HashMap<String,String>> {
static Logger logger = Logger.getLogger (OtherValuesAdapter.class.getName());
public HashMap<String, String> unmarshal(OtherValues[] value ) {
logger.error("unmarshal begin");
HashMap<String, String> r = new HashMap<String,String>();
for( OtherValues c : value )
r.put(c.key, c.value);
return r;
}
public OtherValues[] marshal( HashMap<String,String> value ) {
logger.error("marshal begin");
OtherValues[] pairs = new OtherValues[value.size ()];
int i = 0;
for(Entry<String,String> entry : value.entrySet()) {
pairs[i++] = new OtherValues (entry.getKey(), entry.getValue());
}
return pairs;
}
}
我们需要在一个结构中来包含使用HashMap的变量,因为必须为这个变量再声明一个
@XmlJavaTypeAdapter,这样JAXB才会在收到相应消息时调用我们的转换类。这是结构定义:
import java.util.HashMap;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
public class MapValue {
private String devName;
private String devIp;
@XmlJavaTypeAdapter(OtherValuesAdapter.class)
public HashMap <String, String> otherValues;
public String getDevIp() {
return devIp;
}
public void setDevIp(String devIp) {
this.devIp = devIp;
}
public String getDevName() {
return devName;
}
public void setDevName(String devName) {
this.devName = devName;
}
}
最后,在SOAP服务的声明中,使用这个结构:(注意是sendAlarmMap方法)
import java.util.List;
import javax.jws.*;
import javax.jws.soap.*;
import javax.jws.soap.SOAPBinding.*;
import java.util.HashMap;
import java.util.Map;
@WebService
public interface NotifyService {
public int sendAlarm (DeviceValue alarm);
public String sendAlarmString (String stralarm);
public List<DeviceValue> sendAlarmArr (List<DeviceValue> arr);
public int sendAlarmMap (MapValue m);
}
下面,我们来看如何通过JAVA及PERL的方式调用这个服务:
JAVA的方式:
NotifyService s = (NotifyService) getBean ("notifyClient");
MapValue mv = new MapValue ();
mv.otherValues = new HashMap<String, String> ();
mv.otherValues.put ("hehe2", "a");
mv.otherValues.put ("2", "b");
mv.setDevIp ("he");
mv.setDevName ("hehe2");
int r = s.sendAlarmMap(mv);
logger.info("recv: " + r);
PERL的方式:
{# call send map alarm
my @params = (SOAP::Data->name(arg0=>{
devName=>"hehe",
devIp=>"ip1",
otherValues=>[{
item => [
{key=>"hehe1", value=>"ip1"},
{key=>"hehe1", value=>"ip1"},
{key=>"hehe1", value=>"ip1"},
{key=>"hehe1", value=>"ip1"},
{key=>"hehe1", value=>"ip1"},
{key=>"hehe1", value=>"ip1"},
{key=>"hehe1", value=>"ip1"},
{key=>"hehe1", value=>"ip1"},
{key=>"hehe1", value=>"ip1"},
{key=>"hehe1", value=>"ip1"},
{key=>"hehe2", value=>"ip2"}]
}]
}));
my $method = SOAP::Data->name('sendAlarmMap');
my $result = $soap->call($method => @params);
print "\nsend map alarm result:\n";
if ($result->fault)
{
print $result->faultstring;
}
else
{
print $result->result;
}
print "\n\n";
}
产生的SOAP消息如下:
请求:
<?xml version="1.0" encoding="UTF-8"?><soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" soap:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"><soap:Body><sendAlarmMap><arg0><devName>hehe</devName><otherValues><item><value>ip1</value><key>hehe1</key></item><item><value>ip1</value><key>hehe1</key></item><item><value>ip1</value><key>hehe1</key></item><item><value>ip1</value><key>hehe1</key></item><item><value>ip1</value><key>hehe1</key></item><item><value>ip1</value><key>hehe1</key></item><item><value>ip1</value><key>hehe1</key></item><item><value>ip1</value><key>hehe1</key></item><item><value>ip1</value><key>hehe1</key></item><item><value>ip1</value><key>hehe1</key></item><item><value>ip2</value><key>hehe2</key></item></otherValues><devIp>ip1</devIp></arg0></sendAlarmMap></soap:Body></soap:Envelope>
回应:
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"><soap:Body><ns1:sendAlarmMapResponse xmlns:ns1="http://magic.nms.exchangebit.com/"><return>99</return></ns1:sendAlarmMapResponse></soap:Body></soap:Envelope>
总结:
有了转换器这个工具,我们可以在SOAP的JAXB绑定里支持各种JAVA的COLLECTION类型,以及自定义类型,打破了SOAP原始支持类型的限制。
posted on 2007-10-29 16:41
我爱佳娃 阅读(7209)
评论(5) 编辑 收藏 所属分类:
web技术