执行单元测试时自动装配在 servlet 中不起作用

Question

我有一个标准的 HttpServlet。当我运行它在 tomcat 上时，这对 autowire 很好用，我已经使用这个问题的答案完成了这个。

Autowiring in servlet

但是我无法对其进行单元测试。它不会自动连接 bean。我知道这是因为 servlet 没有用 servletConfig 初始化。但是我该怎么做呢？

Servlet Class

public class MyServlet extends HttpServlet {

  @Autowired
  private MyService myService;

  public void init(ServletConfig config) {
    super.init(config);
    SpringBeanAutowiringSupport.processInjectionBasedOnServletContext(this,
      config.getServletContext());
  }

  protected void doPost(HttpServletRequest request, HttpServletResponse response) {
      myService.doSomething();// myService is null on unit test
  }
}

测试Class

@ContextConfiguration(locations = {"classpath:META-INF/spring/test-context.xml"})
@Transactional
@TransactionConfiguration(defaultRollback = true)
@TestExecutionListeners({TransactionalTestExecutionListener.class})
public class MyServletTest extends AbstractTransactionalTestNGSpringContextTests{

  private MockHttpServletRequest request;
  private MockHttpServletResponse response;
  private MyServlet myServlet;

  @Test(enabled=true)
  public void test() throws Exception {
    myServlet = new MyServlet();
    myServlet.init();
    //myServlet.init(servletConfig); //Where can i get this
    request = new MockHttpServletRequest();
    response = new MockHttpServletResponse();

    //Add stuff to request
    .
    .
    .
    myServlet.doPost(request,response); 
    //request goes through but myService throws a null pointer exception

  }
}

Answer 1

将 DependencyInjectionTestExecutionListener.class 添加到您的 TestExecutionListeners。并且不要使用 "new MyServlet()" Autowire it

创建它

执行单元测试时自动装配在 servlet 中不起作用

Autowire not working in servlet when performing unit test

java

spring

unit-testing

servlets

config