在SOAP头请求中添加用于身份验证的元素

Question

我需要在我的新web服务中合并一个身份验证头（即作为SOAP头请求的一部分）。该身份验证头将验证用户ID和密码详细信息。我必须验证请求头详细信息的内容，以便在我的Web服务中进行身份验证。如果通过了身份验证，那么请求的SOAP主体将被处理，否则无效的身份验证消息将由Web服务发送回调用该服务的客户端应用程序。

我无法理解如何创建一个web服务，其中SOAP头将包含一些元素（在我的例子中是身份验证元素，如userId和password）。

通常，服务中公开的任何方法都将作为SOAP主体的一部分。因此混淆了如何继续在SOAP头中添加身份验证元素。

请帮帮忙

问候，

Answer 1

我们只能从信封中获取报头，而不能从soap消息中获取报头。

Answer 2

最近，我编写了一个类，它将用户凭据添加到SOAP头中。为此，您需要创建一个实现SoapHandler 接口的类。例如:

public class MyHandler implements SOAPHandler<SOAPMessageContext> {

    private static final Logger LOGGER = LoggerFactory.getLogger(MyHandler.class);

    private String username;

    private String password;

    /**
     * Handles SOAP message. If SOAP header does not already exist, then method will created new SOAP header. The
     * username and password is added to the header as the credentials to authenticate user. If no user credentials is
     * specified every call to web service will fail.
     *
     * @param context SOAP message context to get SOAP message from
     * @return true
     */
    @Override
    public boolean handleMessage(SOAPMessageContext context) {
        try {
            SOAPMessage message = context.getMessage();
            SOAPHeader header = message.getSOAPHeader();
            SOAPEnvelope envelope = message.getSOAPPart().getEnvelope();
            if (header == null) {
                header = envelope.addHeader();
            }
            QName qNameUserCredentials = new QName("https://your.target.namespace/", "UserCredentials");
            SOAPHeaderElement userCredentials = header.addHeaderElement(qNameUserCredentials);

            QName qNameUsername = new QName("https://your.target.namespace/", "Username");
            SOAPHeaderElement username = header.addHeaderElement(qNameUsername );
            username.addTextNode(this.username);
            QName qNamePassword = new QName("https://your.target.namespace/", "Password");
            SOAPHeaderElement password = header.addHeaderElement(qNamePassword);
            password.addTextNode(this.password);

            userCredentials.addChildElement(username);
            userCredentials.addChildElement(password);

            message.saveChanges();
            //TODO: remove this writer when the testing is finished
            StringWriter writer = new StringWriter();
            message.writeTo(new StringOutputStream(writer));
            LOGGER.debug("SOAP message: \n" + writer.toString());
        } catch (SOAPException e) {
            LOGGER.error("Error occurred while adding credentials to SOAP header.", e);
        } catch (IOException e) {
            LOGGER.error("Error occurred while writing message to output stream.", e);
        }
        return true;
    }

    //TODO: remove this class after testing is finished
    private static class StringOutputStream extends OutputStream {

        private StringWriter writer;

        public StringOutputStream(StringWriter writer) {
            this.writer = writer;
        }

        @Override
        public void write(int b) throws IOException {
            writer.write(b);
        }
    }

    @Override
    public boolean handleFault(SOAPMessageContext context) {
        LOGGER.debug("handleFault has been invoked.");
        return true;
    }

    @Override
    public void close(MessageContext context) {
        LOGGER.debug("close has been invoked.");
    }

    @Override
    public Set<QName> getHeaders() {
        LOGGER.debug("getHeaders has been invoked.");
        return null;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public void setPassword(String password) {
        this.password = password;
    }
}

注意，我只是将凭据添加到头并返回true。您可以对整个消息执行您想执行的任何操作，如果预期的操作失败，则返回false。

我已经实现了这个客户端:

<bean id="soapHandler" class="your.package.MyHandler">
    <property name="username" value="testUser"/>
    <property name="password" value="testPassword"/>
</bean>

<jaxws:client "...">
    <jaxws:handlers>
        <ref bean="soapHandler"/>
    </jaxws:handlers>
</jaxws:client>

但也可以在端点上实现。