Java 使用Solr搜索引擎特殊字符query检索抛出异常处理

Dec 23, 2017 阅读(433)

标签: Solr

在使用 SolrQuery  params = new SolrQuery(queryStr); 进行查询时,参数queryStr为 content:"学习园 Spring"中间还有空格字符查询时就抛如下异常:

org.apache.solr.client.solrj.impl.HttpSolrClient$RemoteSolrException: Error from server at http://www.xuexiyuan.cn/solr/article-test: undefined field text

at org.apache.solr.client.solrj.impl.HttpSolrClient.executeMethod(HttpSolrClient.java:560)

at org.apache.solr.client.solrj.impl.HttpSolrClient.request(HttpSolrClient.java:235)

at org.apache.solr.client.solrj.impl.HttpSolrClient.request(HttpSolrClient.java:227)

at org.apache.solr.client.solrj.SolrRequest.process(SolrRequest.java:135)

at org.apache.solr.client.solrj.SolrClient.query(SolrClient.java:943)

at org.apache.solr.client.solrj.SolrClient.query(SolrClient.java:958)

at cn.xuexiyuan.blog.solr.service.impl.SolrArticleServiceImpl.search(SolrArticleServiceImpl.java:73)

at cn.xuexiyuan.blog.article.controller.ArticleController.search(ArticleController.java:337)

at sun.reflect.GeneratedMethodAccessor293.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)

at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)

at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:114)

at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)

at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)

at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)

at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963)

at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)

at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)

at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)

at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)

at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)

at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:124)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)

at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)

at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)

at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)

at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)

at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)

at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)

at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

at java.lang.Thread.run(Thread.java:748)

Solr是基于 lucence开发的应用,如果query中带有非法字符串,结果很可能是检索出所有内容或者直接报错,所以你对用户的输入必须要先做处理。输入星号,能够检索出所有内容;输入加号,则会报错,官方提供处理方法,如下。

   * See: <a href="https://www.google.com/?gws_rd=ssl#q=lucene+query+parser+syntax">Lucene query parser syntax</a>
   * for more information on Escaping Special Characters
   */
  // NOTE: its broken to link to any lucene-queryparser.jar docs, not in classpath!!!!!
  public static String escapeQueryChars(String s) {
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < s.length(); i++) {
      char c = s.charAt(i);
      // These characters are part of the query syntax and must be escaped
      if (c == '\\' || c == '+' || c == '-' || c == '!'  || c == '(' || c == ')' || c == ':'
        || c == '^' || c == '[' || c == ']' || c == '\"' || c == '{' || c == '}' || c == '~'
        || c == '*' || c == '?' || c == '|' || c == '&'  || c == ';' || c == '/'
        || Character.isWhitespace(c)) {
        sb.append('\\');
      }
      sb.append(c);
    }
    return sb.toString();
  }

将查询的关键字调用以上方法进程转义处理即可:

//根据文章内容(content字段)查询
String queryChars = ClientUtils.escapeQueryChars(keyword);
PageInfo<ArticleModel> articles = solrArticleService.search("content:" + queryChars,pageNum, 10);