Spring Boot 在 jar 文件中找不到 urlrewrite.xml

Question

我正在使用带有嵌入式 Tomcat 的 Spring Boot，并且类 UrlRewriteFilter 找不到配置文件 urlrewrite.xml，该类使用 servletcontext.getResourceAsStream(this.confPath)，我在其他文章中读到此方法不当包是 jar 时不起作用。有人遇到过这个问题吗？

Answer 1

发现于blog post

import org.springframework.core.io.Resource;
import org.tuckey.web.filters.urlrewrite.Conf;
import org.tuckey.web.filters.urlrewrite.UrlRewriteFilter;

//Adding @Component Annotation to a Filter is enough to register the Filter, when you have no web.xml
@Component
public class MyUrlRewriteFilter extends UrlRewriteFilter {

    private static final String CONFIG_LOCATION = "classpath:/urlrewrite.xml";

    //Inject the Resource from the given location
    @Value(CONFIG_LOCATION)
    private Resource resource;

    //Override the loadUrlRewriter method, and write your own implementation
    @Override
    protected void loadUrlRewriter(FilterConfig filterConfig) throws ServletException {
        try {
            //Create a UrlRewrite Conf object with the injected resource
            Conf conf = new Conf(filterConfig.getServletContext(), resource.getInputStream(), resource.getFilename(), "@@yourOwnSystemId@@");
            checkConf(conf);
        } catch (IOException ex) {
            throw new ServletException("Unable to load URL rewrite configuration file from " + CONFIG_LOCATION, ex);
        }
    }
}

Answer 2

以下代码对我有用。

请使用以下依赖：

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

在资源文件夹中创建urlrewrite.xml：

 <?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>Domain Name Check</name>
        <condition name="host" operator="notequal">www.userdomain.com</condition>
        <from>^(.*)$</from>
        <to type="redirect">http://www.userdomain.com$1</to>
    </rule>
</urlrewrite>

在主ApplicationRunner.java中添加以下内容：

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

并创建一个 CustomURLRewriter：

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.env.Environment;
import org.springframework.core.io.ClassPathResource;
import org.tuckey.web.filters.urlrewrite.Conf;
import org.tuckey.web.filters.urlrewrite.UrlRewriteFilter;
import org.tuckey.web.filters.urlrewrite.UrlRewriter;
import javax.servlet.*;
import java.io.InputStream;

public class CustomURLRewriter extends UrlRewriteFilter {
private UrlRewriter urlRewriter;

@Autowired
Environment env;

@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();
}
}

Answer 3

我正在使用带有 Spring Boot 的 Tuckey UrlRewriteFilter。我遵循了stack overflow question 中的初始问题实现（不是答案）。 我也加了

registrationBean.addInitParameter("confPath", "urlrewrite.xml");

为 urlrewrite.xml 文件设置特定路径。 在项目中，我将文件放在 src/main/webapp 中。

这在使用 'mvn spring-boot:run' 时有效，我认为这可以满足您在 jar 中运行的需要。在我的项目中，我构建了一个战争文件，这也适用。

Answer 4

我并不为此感到自豪，但这对我有用。库本身在某一时刻使用ClassLoader.getSystemResourceAsStream() 来尝试解析文件名，所以我认为这将起作用，除非库在某一天更新/更改。

String fileName = "urlrewrite.xml";
// The prefixed version seems to be needed when running within a jar. 
// Rumor has it that it may be a tomcat 8 specific.
String confPath = java.lang.ClassLoader.getSystemResourceAsStream(fileName) != null ? fileName : "/WEB-INF/classes/" + fileName;
registrationBean.addInitParameter("confPath", confPath);