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怎么用web过滤器增加solr后台登录验证

发布时间:2021-09-08 14:51:06 来源:亿速云 阅读:131 作者:chen 栏目:大数据

这篇文章主要讲解了“怎么用web过滤器增加solr后台登录验证”,文中的讲解内容简单清晰,易于学习与理解,下面请大家跟着小编的思路慢慢深入,一起来研究和学习“怎么用web过滤器增加solr后台登录验证”吧!

solr后台自带是没有登录功能的,默认访问地址是:http://localhost:8983/solr/#/(内置jetty运行)。
要给sorl后台增加登录验证方法:
1、使用web服务器的登录验证(例如jetty、tomcat)
    这种方式好处是不需要另外写代码,只需配置一下对应的web服务器就行了。
2、使用web过滤器过滤地址验证
    这种方法是更加灵活,缺点是需要点代码开发。

本文介绍的是第二种方法:

SolrLoginFilter.java
package com.penngo.solr;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.commons.lang3.StringUtils;

public class SolrLoginFilter implements Filter {
  public void init(FilterConfig config) throws ServletException {

  }

  public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
      throws IOException, ServletException {
    HttpServletRequest httpRequest = (HttpServletRequest)request;
    HttpServletResponse  httpResponse = (HttpServletResponse)response;
    HttpSession session = httpRequest.getSession();

    String url = httpRequest.getRequestURL().toString();
    String userAgent = httpRequest.getHeader("user-agent");
    String query = httpRequest.getQueryString();
    String servletPath = httpRequest.getServletPath();
    String contextPath = httpRequest.getContextPath();
    System.out.println("url======="
        + ", url:" + url + ", servletPath:" + servletPath + ", contextPath:" + contextPath + ", query:" + query 
        + ", userAgent:" + userAgent);
    Object isLogin = session.getAttribute("isLogin");
    if(isLogin == null || ((boolean)isLogin) != true) {
      String user = StringUtils.isEmpty(request.getParameter("user")) == false ? request.getParameter("user") : "";
      String password = StringUtils.isEmpty(request.getParameter("password")) == false ? request.getParameter("password") : "";
      if(user.equals("admin") == true && password.equals("123") == true) {
        session.setAttribute("isLogin", true);
        httpResponse.sendRedirect(contextPath);
        return;
      }
      else {
        httpRequest.setCharacterEncoding("UTF-8");
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        out.println(loginPage());
        out.close();
        return;
      }
    }
    chain.doFilter(request, response);
  }

  public void destroy() {

  }

  private String loginPage() {
    String page = "<html>\n"
        + "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />\n" 
        + "<body>\n"
        + "<form  action=\"/solr/login\">\n"
        + "用户名:<input type=\"text\" name=\"user\" value=\"\"></br></br>\n"
        + "密&nbsp;&nbsp码:<input type=\"password\" name=\"password\"></br></br>\n"
        + "<button type=\"submit\" >登录 </button>\n"
        + "</form>\n"
        + "</body\n"
        + "</html>";
    return page;
  }
}

在原来的web.xml中增加过滤器配置

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
         version="2.5"
         metadata-complete="true"
>

	<!-- 配置登录过滤器 -->
    <filter>
        <filter-name>SolrLoginFilter</filter-name>
        <filter-class>com.penngo.solr.SolrLoginFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>SolrLoginFilter</filter-name>
        <url-pattern>/</url-pattern>
    </filter-mapping>
    <!-- 配置登录过滤器 -->
	
    <!-- Any path (name) registered in solrconfig.xml will be sent to that filter -->
    <filter>
        <filter-name>SolrRequestFilter</filter-name>
        <filter-class>org.apache.solr.servlet.SolrDispatchFilter</filter-class>
        <!--
        Exclude patterns is a list of directories that would be short circuited by the 
        SolrDispatchFilter. It includes all Admin UI related static content.
        NOTE: It is NOT a pattern but only matches the start of the HTTP ServletPath.
        -->
        <init-param>
            <param-name>excludePatterns</param-name>
            <param-value>/partials/.+,/libs/.+,/css/.+,/js/.+,/img/.+,/templates/.+</param-value>
        </init-param>
    </filter>

    <filter-mapping>
        <filter-name>SolrRequestFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>


    <servlet>
        <servlet-name>LoadAdminUI</servlet-name>
        <servlet-class>org.apache.solr.servlet.LoadAdminUiServlet</servlet-class>
    </servlet>

    <servlet>
        <servlet-name>SolrRestApi</servlet-name>
        <servlet-class>org.restlet.ext.servlet.ServerServlet</servlet-class>
        <init-param>
            <param-name>org.restlet.application</param-name>
            <param-value>org.apache.solr.rest.SolrSchemaRestApi</param-value>
        </init-param>
    </servlet>

    <servlet-mapping>
        <servlet-name>LoadAdminUI</servlet-name>
        <url-pattern>/index.html</url-pattern>
    </servlet-mapping>

    <servlet-mapping>
        <servlet-name>SolrRestApi</servlet-name>
        <url-pattern>/schema/*</url-pattern>
    </servlet-mapping>

    <mime-mapping>
        <extension>.xsl</extension>
        <!-- per http://www.w3.org/TR/2006/PR-xslt20-20061121/ -->
        <mime-type>application/xslt+xml</mime-type>
    </mime-mapping>

    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
    </welcome-file-list>

    <!-- Get rid of error message -->
    <security-constraint>
        <web-resource-collection>
            <web-resource-name>Disable TRACE</web-resource-name>
            <url-pattern>/</url-pattern>
            <http-method>TRACE</http-method>
        </web-resource-collection>
        <auth-constraint/>
    </security-constraint>
    <security-constraint>
        <web-resource-collection>
            <web-resource-name>Enable everything but TRACE</web-resource-name>
            <url-pattern>/</url-pattern>
            <http-method-omission>TRACE</http-method-omission>
        </web-resource-collection>
    </security-constraint>

</web-app>

运行结果:

怎么用web过滤器增加solr后台登录验证

怎么用web过滤器增加solr后台登录验证

感谢各位的阅读,以上就是“怎么用web过滤器增加solr后台登录验证”的内容了,经过本文的学习后,相信大家对怎么用web过滤器增加solr后台登录验证这一问题有了更深刻的体会,具体使用情况还需要大家实践验证。这里是亿速云,小编将为大家推送更多相关知识点的文章,欢迎关注!

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