Web service instance-Weather Forecast

Originally, you could use myeclipse to automatically generate a client, and then simply call the client. However, during the creation process, the following problem occurs:

Figure 2.3.1 construct a web service client

The reason is that myeclipse cannot parse tags. For more information, see the WSDL documentation provided by the service provider:

Xmlns: S = http://www.w3.org/2001/XMLSchema

This sentence cannot be parsed by myeclipse. For this reason, we can only create it through the command line and bind the XSD file during the build process.

In fact, this file is the content of JDK, and Java has been abandoned and no longer used, which causes its failure to pass verification.

We now build a Java project in myeclipse (because we only want to test, and do not necessarily need a WEB Project ):

Figure 2.3.2 build a Java Project

Figure 2.3.3 add JAX-WS support

Open the project, enter the src directory, and run the CMD build command:

Wsimport-P com. Test. Client

-Keep http://www.webxml.com.cn/WebServices/WeatherWebService.asmx? WSDL

-B
Http://www.w3.org/2001/XMLSchema.xsd

 Note: It must be written at one time.

-P: Package

-Keep: the URL of the WSDL document

-B: the schema file is missing.

Figure 2.3.4 enter the project directory SRC

Figure 2.3.5 parse the WSDL document

Figure 2.3.6 complete parsing with a warning

Note: a warning is reported for parsing. This is normal, but we have added the missing ones, so we don't have to worry about this. Let's take a look at our project and refresh the projects in myeclipse:

Figure 2.3.7 file structure

We can see that it automatically creates the com. Test. Client package, which contains a series of automatically generated Java classes. So far, our client has been created.

Now we add a test class: webweatherclient

Package COM. test. client; public class webweatherclient {public static void main (string [] ARGs) {weatherwebservice service = new weatherwebservice (); weatherwebservicesoap = service. getweatherwebservicesoap (); system. out. println (soap. getweatherbycityname ("Hangzhou "). getstring ());}}

Code segment 2.3.1 test class.

Now let's run:

We can see that we have obtained the weather information of the city Hangzhou.