如何从 Java 中的 SOAP 端点获取响应？
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How to get response from SOAP endpoint in java?
提问by Cuga
I am very new to SOAP, so was looking into some programs online, this is what I came up with but I get a null response, must be some silly thing, but need little help
我对 SOAP 很陌生，所以在网上查看了一些程序，这是我想出来的，但我得到了一个空响应，一定是一些愚蠢的事情，但几乎不需要帮助
Please take a look at my code and output below. Thanks
请看一下我的代码和下面的输出。谢谢
Code
代码
import java.net.URL;
import javax.xml.namespace.QName;
import javax.xml.soap.MessageFactory;
import javax.xml.soap.SOAPBody;
import javax.xml.soap.SOAPBodyElement;
import javax.xml.soap.SOAPConnection;
import javax.xml.soap.SOAPConnectionFactory;
import javax.xml.soap.SOAPElement;
import javax.xml.soap.SOAPHeader;
import javax.xml.soap.SOAPHeaderElement;
import javax.xml.soap.SOAPMessage;
public class AtomicNumber {
public static void main(String[] args) {
try {
SOAPConnectionFactory sfc = SOAPConnectionFactory.newInstance();
SOAPConnection connection = sfc.createConnection();
MessageFactory mf = MessageFactory.newInstance();
SOAPMessage smsg = mf.createMessage();
SOAPHeader shead = smsg.getSOAPHeader();
SOAPBody sbody = smsg.getSOAPBody();
shead.detachNode();
QName bodyName = new QName("http://www.webserviceX.NET", "GetAtomicNumber", "web");
SOAPBodyElement bodyElement = sbody.addBodyElement(bodyName);
QName qn = new QName("ElementName");
SOAPElement quotation = bodyElement.addChildElement(qn);
quotation.addTextNode("iron");
System.out.println("\n Soap Request:\n");
smsg.writeTo(System.out);
System.out.println();
URL endpoint = new URL("http://www.webservicex.net/periodictable.asmx");
SOAPMessage response = connection.call(smsg, endpoint);
System.out.println("\n Soap Response:\n");
System.out.println(response.getContentDescription());
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
My Output
我的输出
Soap Request:
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"><SOAP-ENV:Body><web:GetAtomicNumber xmlns:web="http://www.webserviceX.NET"><ElementName>sodium</ElementName></web:GetAtomicNumber></SOAP-ENV:Body></SOAP-ENV:Envelope>
Soap Response:
null
Update
更新
This is what I am getting (Exception)
这就是我得到的（例外）
<faultcode>soap:Server</faultcode>
<faultstring>System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.Data.SqlClient.SqlException: Procedure or function 'GetAtomicNumber' expects parameter '@ElementName', which was not supplied.
at WebServicex.periodictable.GetAtomicNumber(String ElementName)
--- End of inner exception stack trace ---</faultstring>
回答by Cuga
What you want to do is auto-generate Java code for this web service. The WSDL is here: http://www.webservicex.net/periodictable.asmx?wsdl
您要做的是为该 Web 服务自动生成 Java 代码。WSDL 在这里：http: //www.webservicex.net/periodictable.asmx?wsdl
In Java, the tool to auto-generate the code is wsimport. You'll want to use something like this:
在 Java 中，自动生成代码的工具是wsimport. 你会想要使用这样的东西：
wsimport http://www.webservicex.net/periodictable.asmx?wsdl -p com.company.whateveruwant -Xnocompile -d . -keep
This will put the code you want in the specified package (here com.company.whateveruwant).
这会将您想要的代码放在指定的包中（此处com.company.whateveruwant）。
From there, all you have to do is simply invoke the SOAP method like a normal Java library:
从那里，您所要做的就是像普通 Java 库一样调用 SOAP 方法：
PeriodictableSoap soap = new Periodictable().getPeriodictableSoap();
System.out.println(soap.getAtomicNumber("Iron"));
This prints out:
这打印出来：
<NewDataSet>
<Table>
<AtomicNumber>26</AtomicNumber>
<ElementName>Iron</ElementName>
<Symbol>Fe</Symbol>
<AtomicWeight>55.847</AtomicWeight>
<BoilingPoint>3300</BoilingPoint>
<IonisationPotential>7.9</IonisationPotential>
<EletroNegativity>1.6400000000000001</EletroNegativity>
<AtomicRadius>1.17</AtomicRadius>
<MeltingPoint>1808</MeltingPoint>
<Density>7874</Density>
</Table>
</NewDataSet>
回答by kjp
Try with
试试
QName qn = new QName("http://www.webserviceX.NET","ElementName","web");
EDIT: Also, as others have suggested - you will be better off using generated client code here - Axis, JAX-WS etc are all options.
编辑：此外，正如其他人所建议的那样 - 您最好在此处使用生成的客户端代码 - Axis、JAX-WS 等都是选项。
The correct code should be as below.
正确的代码应该如下。
QName bodyName = new QName("http://www.webserviceX.NET", "GetAtomicNumber");
SOAPBodyElement bodyElement = sbody.addBodyElement(bodyName);
QName qn = new QName("ElementName");
回答by Wojtek Owczarczyk
Do you really need to use bare SOAP classes? How about generating JAX-WS artifactsto get rid of all this boilerplate?
您真的需要使用裸 SOAP 类吗？如何生成 JAX-WS 工件以摆脱所有这些样板文件？
More info (incorporating ANT) here.
更多信息（包括 ANT）请点击此处。
回答by Carlos Castellanos
With cxf-codegen-plugin maven plugin you can create a client of the soap service quickly by adding these dependencies:
使用 cxf-codegen-plugin maven 插件，您可以通过添加以下依赖项来快速创建 soap 服务的客户端：
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-frontend-jaxws</artifactId>
<version>2.4.2</version>
</dependency>
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-transports-http</artifactId>
<version>2.4.2</version>
</dependency>
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-core</artifactId>
<version>2.4.2</version>
</dependency>
and adding this build section:
并添加此构建部分：
org.apache.cxf cxf-codegen-plugin 2.1.2 generate-sources generate-sources wsdl2java ${basedir}/target/generated-sources/cxf ${basedir}/src/main/resources/wsdlfile.wsdl -client -wsdlLocation -p com.package.for.generated.classes
org.apache.cxf cxf-codegen-plugin 2.1.2 generate-sources generate-sources wsdl2java ${basedir}/target/generated-sources/cxf ${basedir}/src/main/resources/wsdlfile.wsdl -client -wsdlLocation -p com.package.for.generated.班级
then inside ${basedir}/target/generated-sources/cxf you will have classes required to call the web service and an example of how to do it.
然后在 ${basedir}/target/generated-sources/cxf 中，您将拥有调用 Web 服务所需的类以及如何执行此操作的示例。
Hope it helps!
希望能帮助到你！
回答by shariq
@Ricky, this is the correct code.
@Ricky，这是正确的代码。
SOAPBody body = message.getSOAPBody();
QName bodyName = new QName("http://www.webserviceX.NET", "GetAtomicNumber");
SOAPBodyElement bodyElement = body.addBodyElement(bodyName);
SOAPElement symbol = bodyElement.addChildElement("MyMetal");
symbol.addTextNode("iron");
SOAPConnection connection = SOAPConnectionFactory.newInstance().createConnection();
SOAPMessage response = connection.call(message, endpoint);
connection.close();
message.writeTo(System.out);
System.out.println();
response.writeTo(System.out);
System.out.println();
