Tackling The WebServiceException In Spring: An In-Depth Examination And Solution Guide
When working extensively with Web-Services in the expansive Spring framework, it’s commonplace to encounter different exceptions. One such exception that often baffles developers is the WebServiceException. It’s crucial to understand not only the root cause behind the occurrence but also the suitable methods for rectifying this.
In this informative guide, we delve into the intricacies of the WebServiceException in the Spring framework. We’ll explore its causes, potential solutions, and practical scenarios where this exception is typically encountered. By the end of this article, you’ll have gained invaluable insights into taming this beast with user-friendly code examples.
Understanding WebServiceException in Spring
At a fundamental level, WebServiceException is a RuntimeException, typically thrown when data retrieval from Services experiences disruptions.
Let’s glance at a sample code block where WebServiceException is usually witnessed.
1
2
3
4
5
6
7
try{
PaymentService paymentService = new PaymentService();
Payment payment = paymentService.getPaymentDetails(paymentId);
}catch(WebServiceException ex){
log.error("Error getting payment details", ex);
// handle exception...
}
In this scenario, the WebServiceException announces that there have been complications retrieving payment details due to an issue with the web service.
Common Causes of WebServiceException
Understanding the common triggers behind this exception makes it easier to pinpoint and resolve the issue. The major causes for a WebServiceException to materialize include:
- Connection Timeout: When the client doesn’t get a response from the server within the defined timeframe, a
WebServiceExceptionemerges. - Server is not Available: When the server is down or not reachable, the client will not gather data, causing a
WebServiceException. - Data is not Accessible: When the requested data is null or not available, it promptly triggers a
WebServiceException.
Resolving WebServiceException – Code-centric Solutions
Resolving a WebServiceException involves addressing the root cause. Here we’ll provide code solutions for common scenarios.
1. Handling WebServiceException for Connection Timeout
1
2
3
4
5
6
7
8
9
10
11
12
13
14
@Configuration
public class WebServiceConfig {
@Bean
public JaxWsPortProxyFactoryBean myServiceClient() {
JaxWsPortProxyFactoryBean client = new JaxWsPortProxyFactoryBean();
client.setServiceName("MyService");
client.setServiceInterface(MyService.class);
client.setWsdlDocumentUrl(new URL("http://example.com/MyService?wsdl"));
client.setNamespaceUri("http://example.com");
// Timeout set to 60000 ms
client.setCustomProperties(Collections.singletonMap("com.sun.xml.internal.ws.connect.timeout", "60000"));
return client;
}
}
In this snippet, we’ve extended the connection timeout to 60000 ms, thereby providing ample time for the client to get a server response.
2. Handling WebServiceException when Server is unavailable
The following code ensures that function execution halts when the server is down.
1
2
3
4
5
6
7
try{
PaymentService paymentService = new PaymentService();
Payment payment = paymentService.getPaymentDetails(paymentId);
}catch(WebServiceException ex){
log.error("Server not available", ex);
// Maybe you can try again later when the server is up
}
Here we ideally expect a strategy that includes a retry mechanism or fallback routine.
3. Handling WebServiceException when Data is not accessible
The block of code below addresses situations when data availability leads to a WebServiceException.
1
2
3
4
5
6
7
8
public Payment getPaymentDetails(String paymentId) {
Payment payment= paymentMapper.getPaymentDetails(paymentId);
if(payment == null){
throw new WebServiceException("Payment details "+ paymentId+" not found");
}else{
return payment;
}
}
In the code above, if there’s any attempt to retrieve non-existing data, the function immediately throws a WebServiceException with an appropriate message.
Conclusion
Although daunting initially, WebServiceException in Spring aren’t as unsolvable as they seem. By understanding their main causes and grasping efficient solutions, you can create resilient web services resilient to exceptions. The code examples provided throughout this guide ensure that you have a practical resource during your web service creation journey.