Java中调用WebService指定@WebMethod的方法及参数传递问询

Hey there, let's work through your two JAX-WS WebService questions step by step:

1. Correct Way to Call WebMethods from Browser #

First, your initial attempt to access http://localhost:8000/rs/GetNextOne?wsdl was off the mark—here's what you need to do:

Step 1: Verify Your Service is Published Properly #

First, check if your WSDL is accessible by visiting:
http://localhost:8000/rs?wsdl
If you see a well-formed XML document, your service is up and running. The ?wsdl suffix goes directly on the endpoint URL, not the method name.

Step 2: Call WebMethods from Browser #

JAX-WS uses SOAP by default, which requires a POST request with an XML payload—browsers send GET requests by default, so you can't just type the method URL directly. Here are two ways to make it work:

Option A: Use Browser Dev Tools to Send a SOAP POST

1. Open your browser's developer tools (F12) → Go to the "Network" tab.
2. Create a new POST request to http://localhost:8000/rs.
3. Set the Content-Type header to text/xml; charset=utf-8.
4. Paste this SOAP payload for the GetNextOne method:

<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:rand="http://rand/">
   <soapenv:Header/>
   <soapenv:Body>
      <rand:GetNextOne/>
   </soapenv:Body>
</soapenv:Envelope>

5. Send the request—you'll get a SOAP response with the random integer.

Option B: Enable GET Requests for Simple Methods

If you want to call GetNextOne directly via a browser GET request, modify your RandService class to add HTTP method annotations (requires a JAX-WS implementation like Metro):

package rand;
import javax.jws.WebService;
import javax.jws.WebMethod;
import javax.xml.ws.http.HTTPMethod;
import java.util.Random;

@WebService
public class RandService {
    private static final int maxRands = 16;

    @WebMethod(operationName = "GetNextOne")
    @HTTPMethod("GET") // Add this line to enable GET access
    public int next1() {
        return new Random().nextInt();
    }

    // ... rest of your existing code
}

Restart the publisher, then visit http://localhost:8000/rs/GetNextOne—you'll see the random integer directly in the browser.

2. Calling the GetNext (nextN) Method with Parameters #

To call the method that takes an integer parameter and returns an array, you have a few straightforward options:

Option 1: Use a SOAP Testing Tool (e.g., soapUI) #

This is the easiest way for testing:

1. Open soapUI, create a new SOAP project, and enter your WSDL URL: http://localhost:8000/rs?wsdl.
2. Expand the project → Find the GetNext operation.
3. Double-click "Request" and enter your desired parameter value (e.g., 5) in the placeholder:

<rand:GetNext>
   <arg0>5</arg0> <!-- Replace with your number; check WSDL for exact parameter name if needed -->
</rand:GetNext>

4. Send the request—you'll get a SOAP response with the array of random integers.

Option 2: Generate a Java Client with wsimport #

If you want to call the service from another Java app:

1. Run the wsimport tool (included with JDK) to generate client classes:

wsimport -keep http://localhost:8000/rs?wsdl

2. Use the generated classes to write a client:

public class RandServiceClient {
    public static void main(String[] args) {
        // Initialize the service and port
        RandServiceService service = new RandServiceService();
        RandService port = service.getRandServicePort();

        // Call GetNext with parameter 5
        int[] randomNumbers = port.getNext(5);

        // Print the result
        System.out.println("Random numbers:");
        for (int num : randomNumbers) {
            System.out.println(num);
        }
    }
}

3. Compile and run the client—you'll see the array of random integers in the console.

Option 3: Use curl to Send a SOAP POST Request #

If you prefer command-line tools:

curl -X POST -H "Content-Type: text/xml; charset=utf-8" -d '<?xml version="1.0"?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:rand="http://rand/">
   <soapenv:Header/>
   <soapenv:Body>
      <rand:GetNext>
         <arg0>5</arg0> <!-- Replace with your desired number -->
      </rand:GetNext>
   </soapenv:Body>
</soapenv:Envelope>' http://localhost:8000/rs

You'll get a SOAP response with the array of random integers as XML.

内容的提问来源于stack exchange，提问作者JAN