Question

我必须将带有servlet的旧Spring应用程序移植到spring boot应用程序。

我已为现有servlet配置了java样式配置文件，但我无法将spring环境传递给它们。

例如java config看起来像这样（我跳过了真实的映射）

@Configuration
public class ServletConfig {

    @Bean
    public ServletRegistrationBean initServletRegistration() throws ServletException {
        ServletRegistrationBean bean = new ServletRegistrationBean();
        try {
            bean.setServlet(new InitServlet());
        } catch (Exception e) {
            NewLog.logError(this, "InitServlet threw an exception: " + e, e);
            throw new ServletException("InitServlet threw an exception: " + e);
        }
        bean.setUrlMappings(Arrays.asList("...."));
        bean.setLoadOnStartup(1);
        return bean;
    }

    @Bean
    public ServletRegistrationBean testReceiveServiceServletRegistration() {
        ServletRegistrationBean bean = new ServletRegistrationBean();
        bean.setServlet(new TestReceiveServiceServlet());
        bean.setUrlMappings(Arrays.asList("...."));
        return bean;
    }

    @Bean
    public ServletRegistrationBean insertIntoInputQueueServletRegistration() {
        ServletRegistrationBean bean = new ServletRegistrationBean();
        bean.setServlet(new InsertIntoInputQueueServlet());
        bean.setUrlMappings(Arrays.asList("...."));
        return bean;
    }

    @Bean
    public ServletRegistrationBean nonCxfRedirectServletRegistration() {
        ServletRegistrationBean bean = new ServletRegistrationBean();
        bean.setServlet(new NonCxfRedirectServlet());
        bean.setUrlMappings(Arrays.asList(".....");
        return bean;
    }

然后在servlet中我想注入spring环境但是我总是为env vairable得到null

public class InitServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

    @Autowired
    Environment env;

    public InitServlet() throws Exception {
    }
........
}

servlet本身工作正常如果我在他们响应的给定url映射上调试它们，我只想从它们访问spring环境以从application-X.properties获取数据，具体取决于给定的spring配置文件。

Answer 1

Spring只能注入Spring bean，你需要在InitServlet配置类中注册ServletConfig作为Bean。

在单独的servlet

1 个答案: