Spring @AutoWired always null

问题

I'm trying to call SOAP service from another system on my program. I've generated the java classes needed from WSDL by using wsimport command.

Here's my program's configuration

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

    <display-name>PTDAM Promo Engine</display-name>
    <description>Promo Engine using Elastic Search</description>

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/cxf-servlet.xml</param-value>

    </context-param>

    <context-param>
        <param-name>webAppRootKey</param-name>
        <param-value>promoengine</param-value>
    </context-param>

    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <servlet>
        <servlet-name>CXFServlet</servlet-name>
        <display-name>CXF Servlet</display-name>
        <servlet-class>
            org.apache.cxf.transport.servlet.CXFServlet
        </servlet-class>
        <load-on-startup>2</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>CXFServlet</servlet-name>
        <url-pattern>/*</url-pattern>
    </servlet-mapping>


</web-app>

and here's my xml configuration file where i store the config location

UPDATE: added ESCreditRunner class as a bean below, and still got the same error

cxf-servlet.xml

    <beans xmlns="http://www.springframework.org/schema/beans"
           xmlns:context="http://www.springframework.org/schema/context"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:jaxrs="http://cxf.apache.org/jaxrs"
           xmlns:cxf="http://cxf.apache.org/core" xmlns:jaxws="http://cxf.apache.org/jaxws"
           xmlns:sec="http://cxf.apache.org/configuration/security" xmlns:http="http://cxf.apache.org/transports/http/configuration"
           xmlns:http-conf="http://cxf.apache.org/transports/http/configuration"

           xsi:schemaLocation="http://www.springframework.org/schema/beans
                      http://www.springframework.org/schema/beans/spring-beans.xsd 
                      http://cxf.apache.org/transports/http/configuration
                      http://cxf.apache.org/schemas/configuration/http-conf.xsd
                  http://cxf.apache.org/configuration/security
                  http://cxf.apache.org/schemas/configuration/security.xsd
                  http://cxf.apache.org/jaxrs 
                  http://cxf.apache.org/schemas/jaxrs.xsd 
                  http://cxf.apache.org/core 
                  http://cxf.apache.org/schemas/core.xsd
                  http://cxf.apache.org/jaxws 
                  http://cxf.apache.org/schemas/jaxws.xsd
                  http://www.springframework.org/schema/context 
                  http://www.springframework.org/schema/context/spring-context-3.0.xsd">        

         <!-- use this to enable @AutoWired -->
         <context:annotation-config />
         <context:component-scan base-package="ptdam.emoney.webservice.transactions" />

         <import resource="classpath:META-INF/cxf/cxf.xml" />
         <import resource="classpath:META-INF/cxf/cxf-extension-soap.xml" />
         <import resource="classpath:META-INF/cxf/cxf-servlet.xml" />

        <!-- Client -->
        <jaxws:client id="topupWebService"
            serviceClass="ptdam.emoney.webservice.transactions.TopupWebService"
            address="http://localhost:8080/ecash-core-engine-dev-mitigasi/services/emoneytopup"

<!-- Beans -->
    <bean id="esCreditRunner" class="com.ptdam.promo.services.ESCreditRunner" />
        />      
    </beans>

and here's how i use the @AutoWired, to call the SOAP service topupWebService.. on the testCall() method

ESCreditRunner.java

package ptdam.emoney.webservice.transactions;    
public class ESCreditRunner {
        private File statusFile;
        private Properties status;
        private static final Logger logger = Logger.getLogger(ESCreditRunner.class);


        @Autowired
        private TopupWebService topupWebService;
        public void setTopupWebService(TopupWebService topupWebService) {
            this.topupWebService = topupWebService;
        }

        // testing 04/07/2017
        public void testCall(){
            topupWebService.echoTest("Luki");
        }
    }

when i run the testCall() method, i always get NullPointerException on the topupWebService variable. It looks like it's not injected properly..

what i'm missing here?

---

Update: i've made another thread as a continuation of this thread. Kindly check it here :) Spring WebService with Endpoint vs no Endpoint

回答1:

You should set the annotation @Component on the class ESCreditRunner

回答2:

You can try to use:

 @RunWith(SpringJUnit4ClassRunner.class)
 @ContextConfiguration(locations = "cxf-servlet.xml")

If your xml isn't in classpath, then you can use classpath:**/cxf-servlet.xml

回答3:

I have solved using @Component on my class and setting @Autowired to all object called in cascade from the controller or check your package in settings like that spring mvc @Autowired error Unsatisfied 'required' dependency of type

来源：https://stackoverflow.com/questions/44900195/spring-autowired-always-null