怎么用web過濾器增加solr后臺登錄驗證

發(fā)布時間：2021-09-08 14:51:06 來源：億速云閱讀：131 作者：chen 欄目：大數(shù)據(jù)

這篇文章主要講解了“怎么用web過濾器增加solr后臺登錄驗證”，文中的講解內(nèi)容簡單清晰，易于學(xué)習(xí)與理解，下面請大家跟著小編的思路慢慢深入，一起來研究和學(xué)習(xí)“怎么用web過濾器增加solr后臺登錄驗證”吧！

solr后臺自帶是沒有登錄功能的，默認(rèn)訪問地址是：http://localhost:8983/solr/#/(內(nèi)置jetty運(yùn)行)。
要給sorl后臺增加登錄驗證方法：
1、使用web服務(wù)器的登錄驗證(例如jetty、tomcat)
這種方式好處是不需要另外寫代碼，只需配置一下對應(yīng)的web服務(wù)器就行了。
2、使用web過濾器過濾地址驗證
這種方法是更加靈活，缺點是需要點代碼開發(fā)。

本文介紹的是第二種方法：

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"
        + "用戶名：<input type=\"text\" name=\"user\" value=\"\"></br></br>\n"
        + "密&nbsp;&nbsp碼：<input type=\"password\" name=\"password\"></br></br>\n"
        + "<button type=\"submit\" >登錄 </button>\n"
        + "</form>\n"
        + "</body\n"
        + "</html>";
    return page;
  }
}

在原來的web.xml中增加過濾器配置

<?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"
>

	<!-- 配置登錄過濾器 -->
    <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>
    <!-- 配置登錄過濾器 -->
	
    <!-- 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>

運(yùn)行結(jié)果：

怎么用web過濾器增加solr后臺登錄驗證

感謝各位的閱讀，以上就是“怎么用web過濾器增加solr后臺登錄驗證”的內(nèi)容了，經(jīng)過本文的學(xué)習(xí)后，相信大家對怎么用web過濾器增加solr后臺登錄驗證這一問題有了更深刻的體會，具體使用情況還需要大家實踐驗證。這里是億速云，小編將為大家推送更多相關(guān)知識點的文章，歡迎關(guān)注！

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