在 Spring 引导中重定向到不同的主机(非 www 到 www URL)

Redirect to a different host in Spring Boot (non-www to www URL)

我已使用自签名证书配置我的项目,并将不安全的 http 重定向到 https。我还想将请求重定向到没有“www.”前缀的主机到有前缀的主机,就像我们向 https://google.com its automatically redirected to https://www.google.com.

发出请求一样

现在为了这样做,我找到了一个名为 UrlRewriteFilter but this library has configuration available in XML. I tried to convert the XML configuration to java equivalent one but i had no luck as I couldn't find the java equivalent methods. I tried to convert the configuration by taking reference from this Baeldung resource 的库。下面是基于 XML 的配置。我正在使用带有嵌入式 undertow 服务器的 Spring Boot 1.5.19。请帮忙。

Maven 依赖:

<dependency>
  <groupId>org.tuckey</groupId>
  <artifactId>urlrewritefilter</artifactId>
  <version>4.0.4</version>
</dependency>

web.xml

<filter>
    <filter-name>UrlRewriteFilter</filter-name>
    <filter-class>org.tuckey.web.filters.urlrewrite.UrlRewriteFilter</filter-class>
</filter>
<filter-mapping>
  <filter-name>UrlRewriteFilter</filter-name>
  <url-pattern>/*</url-pattern>
  <dispatcher>REQUEST</dispatcher>
  <dispatcher>FORWARD</dispatcher>
</filter-mapping>

urlrewrite.xml

<urlrewrite>
  <rule>
    <name>seo redirect</name>
    <condition name="host" operator="notequal">^www.csetutorials.com</condition>
    <from>^/(.*)</from>
    <to type="permanent-redirect" last="true">http://www.csetutorials.com/</to>
  </rule>
</urlrewrite>

我必须在这里回答我自己的问题,因为我发现这个库没有 Java 等效配置,因为它最后一次维护是在 2012 年。解决方案是 Java 和 XML 配置。如果您使用反向代理服务器,则可以避免此配置。但是,我想避免这种情况,让单个应用程序服务器来做各种事情。所以这里是:

配置文件:

@Configuration
public class UrlRewriteConfig extends UrlRewriteFilter {

    private UrlRewriter urlRewriter;

    @Bean
    public FilterRegistrationBean tuckeyRegistrationBean() {
        final FilterRegistrationBean registrationBean = new FilterRegistrationBean();
        registrationBean.setFilter(new UrlRewriteConfig());
        return registrationBean;
    }

    @Override
    public void loadUrlRewriter(FilterConfig filterConfig) throws ServletException {
        try {
            ClassPathResource classPathResource = new ClassPathResource("urlrewrite.xml");
            InputStream inputStream = classPathResource.getInputStream();
            Conf conf1 = new Conf(filterConfig.getServletContext(), inputStream, "urlrewrite.xml", "");
            urlRewriter = new UrlRewriter(conf1);
        } catch (Exception e) {
            throw new ServletException(e);
        }
    }

    @Override
    public UrlRewriter getUrlRewriter(ServletRequest request, ServletResponse response, FilterChain chain) {
        return urlRewriter;
    }

    @Override
    public void destroyUrlRewriter() {
        if (urlRewriter != null)
            urlRewriter.destroy();
    }
}

项目结构:

和 urlrewrite.xml 文件:

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE urlrewrite
        PUBLIC "-//tuckey.org//DTD UrlRewrite 3.0//EN"
        "http://www.tuckey.org/res/dtds/urlrewrite3.0.dtd">

<urlrewrite>
    <rule>
        <name>SEO Redirect and Secure Channel</name>
        <condition name="host" operator="equal">^example.com</condition>
        <from>^(.*)$</from>
        <to type="permanent-redirect">https://www.example.com</to>
    </rule>
</urlrewrite>

需要注意的一个非常重要的点,是我必须在 Undertow 服务器配置中删除不安全的 http 到 https 重定向,因为它抛出了一个错误 - "TOO MANY REDIRECTS".所以我所做的是我保持打开两个端口 - 80 和 443 用于不安全和安全连接,并且 tuckey 配置进行各种重定向,从 http 到 https 以及从非 www 到 www。希望对你有帮助。