使用web.xml配置spring-boot应用程序

Question

我正在启动现有的Spring Web应用程序,因此生成的war文件嵌入了一个Jetty Web服务器.我想尽可能地坚持现有配置以限制回归.

这是现有的web.xml:

<web-app id="fbecart-webapp" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<context-param>
    <param-name>contextClass</param-name>
    <param-value>org.springframework.web.context.support.AnnotationConfigWebApplicationContext</param-value>
</context-param>
<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>com.fbecart.ApplicationConfiguration</param-value>
</context-param>
<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<servlet>
    <servlet-name>spring-dispatcher</servlet-name>
    <servlet-class>com.fbecart.MyDispatcherServlet</servlet-class>
    <init-param>
        <param-name>dispatchOptionsRequest</param-name>
        <param-value>true</param-value>
    </init-param>
    <init-param>
        <param-name>contextClass</param-name>
        <param-value>org.springframework.web.context.support.AnnotationConfigWebApplicationContext</param-value>
    </init-param>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>com.fbecart.SpringDispatcherServletConfiguration</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>spring-dispatcher</servlet-name>
    <url-pattern>/*</url-pattern>
</servlet-mapping>

<filter>
    <filter-name>GzipFilter</filter-name>
    <filter-class>org.eclipse.jetty.servlets.GzipFilter</filter-class>
</filter>
<filter-mapping>
    <filter-name>GzipFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

<filter>
    <filter-name>encodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
        <param-name>encoding</param-name>
        <param-value>UTF-8</param-value>
    </init-param>
    <init-param>
        <param-name>forceEncoding</param-name>
        <param-value>true</param-value>
    </init-param>
</filter>
<filter-mapping>
    <filter-name>encodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

<filter>
    <filter-name>openSessionInView</filter-name>
    <filter-class>org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter</filter-class>
</filter>
<filter-mapping>
    <filter-name>openSessionInView</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>

这是我的主要课程JettyApplication.java:

package com.fbecart;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.web.EmbeddedServletContainerAutoConfiguration;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;

@Configuration
@Import({ ApplicationConfiguration.class, SpringDispatcherServletConfiguration.class,
    EmbeddedServletContainerAutoConfiguration.class })
public class JettyApplication {
  public static void main(String[] args) throws Exception {
    SpringApplication.run(JettyApplication.class, args);
  }
}

我对Gradle构建脚本进行了一些更改以使其工作:

• 在spring-boot-starter和spring-boot-starter-jetty中添加了依赖项
• spring-boot插件的配置

应用程序启动正常,控制器已加载,我可以查询服务器.但是没有启用web.xml中定义的过滤器.

现在我想删除的进口PropertiesConfiguration.class,ApplicationConfiguration.class并SpringDispatcherServletConfiguration.class在JettyApplication.java,并以某种方式取代那些通过加载或导入的内容web.xml到嵌入式servlet容器.但我忽略了,如果这是一个正确的策略,如果我能做到的话.我非常感谢任何帮助.

- 解决方案

以下是JettyApplication.class基于戴夫答案的决赛:

package com.fbecart;

import org.eclipse.jetty.servlets.GzipFilter;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.web.EmbeddedServletContainerAutoConfiguration;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter;
import org.springframework.web.filter.CharacterEncodingFilter;
import org.springframework.web.servlet.DispatcherServlet;

@Configuration
@Import({ ApplicationConfiguration.class, SpringDispatcherServletConfiguration.class,
    EmbeddedServletContainerAutoConfiguration.class })
public class JettyApplication {
  public static void main(String[] args) throws Exception {
    SpringApplication.run(JettyApplication.class, args);
  }

  @Bean
  public DispatcherServlet dispatcherServlet() {
    return new MyDispatcherServlet();
  }

  @Bean
  public GzipFilter gzipFilter() {
    return new GzipFilter();
  }

  @Bean
  public CharacterEncodingFilter characterEncodingFilter() {
    final CharacterEncodingFilter characterEncodingFilter = new CharacterEncodingFilter();
    characterEncodingFilter.setEncoding("UTF-8");
    characterEncodingFilter.setForceEncoding(true);
    return characterEncodingFilter;
  }

  @Bean
  public OpenEntityManagerInViewFilter openEntityManagerInViewFilter() {
    return new OpenEntityManagerInViewFilter();
  }
}

I will replace web.xml by a ServletContainerInitializer in a near future... stay tuned ;)

Answer 1

如果我是你,我会慢慢尝试剥离web.xml中的图层并完全删除它.这样,整个应用程序只有一个配置,包括所有过滤器和servlet(无论如何都是这个想法).您可以在稳定在web.xml中复制过滤器的位置时执行某些并行运行,然后在主应用程序中具有相同的功能时,您可以删除web.xml.加入滤光片来主应用程序刚刚创建@Bean定义Filter或FilterRegistrationBean实例.

SpringBootServletInitializer如果需要,您也可以随时支持战争部署.