问题遇到的现象和发生背景
我在javaweb中使用了ajax,在AllHttpServlet中调用了search()方法，该方法中使用elasticsearch-rest-high-level-client实现全文检索，结果开启tomcat后导致其他的请求也失败了，tomcat报错在下面。
js:
//搜索
$.ajax({
// url : 'http://192.168.1.134:80/BlogSystem/AllHttpServlet',
url : 'http://localhost:8080/BlogSystem/AllHttpServlet',
type : 'GET',
dataType : 'json',
xhrFields:{
withCredentials:true //允许携带cookie
},
data:{
id:"search",
search_text:document.getElementsByName('searchtext')[0].value,
},
success:function(data){
var arr = data["hits"]["hits"];
alert(arr[0]);
search()方法:
//搜索
public static void search(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
request.setCharacterEncoding("utf-8");
try {
String search_text = request.getParameter("search_text");
System.out.println(search_text);
// 创建客户端
RestHighLevelClient esClient = EsCli.connectES();
SearchRequest searchRequest = new SearchRequest("blogtext");
/**
* 请求方式：termQueryBuilder
* 关键字查询，keyword类型等全匹配查询 text类型分词后的关键词
*/
TermQueryBuilder termQueryBuilder = QueryBuilders.termQuery("text_title", "张三");
/**
* 查询所有字段，分词检索（使用默认设置的分词器）
* 如：已设置了ik分词就用该分词器。效果同multi_match "fields": ["*"]
*/
QueryStringQueryBuilder queryStringQueryBuilder = QueryBuilders.queryStringQuery(search_text);
/**
* 定义bool查询，适用于多条件组合与过滤查询filter
*/
BoolQueryBuilder boolQueryBuilder= QueryBuilders.boolQuery();
/**
* 过滤查询-不参与分值排名（ES默认先执行filter在执行bool查询）过滤出包含字段的数据再进行检索
* 1.提高检索性能
* 2.提高检索速度
* 3.全文检索时，优先建议使用
*/
boolQueryBuilder.filter(new ExistsQueryBuilder("text_title"))
.filter(new ExistsQueryBuilder("text_content"));
/**
* bool 关键字: ⽤来组合多个条件实现复杂查询
* must: 相当于&& 同时成⽴
* should: 相当于|| 成⽴⼀个就⾏
* must_not: 相当于! 不能满⾜任何⼀个
*/
boolQueryBuilder.must(queryStringQueryBuilder)
.must(queryStringQueryBuilder)
.should(termQueryBuilder)
.mustNot(termQueryBuilder);
/**
* 定义高亮体
* 1.requireFieldMatch —false 其他字段根据关键词也高亮。 —true 只高亮检索的字段
* 2.* 代表全部字体高亮
* 3.⾃定义⾼亮标签
*/
HighlightBuilder highlightBuilder = new HighlightBuilder();
highlightBuilder.requireFieldMatch(true)
.field("*")
.preTags("")
.postTags("");
/**
* 请求体
*/
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
/**
* 1.分页
* 2.排序，不参与得分排名
* 3.包含的字段与排除的字段
* 4.添加高亮体
* 5.添加请求方法 bool
*/
searchSourceBuilder
.from(0)
.size(10)
.sort("text_views", SortOrder.DESC)
.fetchSource(new String[]{"*"}, Strings.EMPTY_ARRAY)
.highlighter(highlightBuilder)
.query(boolQueryBuilder);
/**
* 添加请求体
*/
searchRequest.source(searchSourceBuilder);
SearchResponse searchResponse = null;
try {
searchResponse = esClient.search(searchRequest, RequestOptions.DEFAULT);
} catch (IOException e) {
e.printStackTrace();
}
// /**
// * 获取高亮字段
// */
// SearchHit[] hits = searchResponse.getHits().getHits();
// for (SearchHit hit : hits) {
// Map<String, HighlightField> highlightFields = hit.getHighlightFields();
// Set<Map.Entry<String, HighlightField>> entrySet = highlightFields.entrySet();
// for (Map.Entry<String, HighlightField> entry :entrySet) {
// System.out.println("高亮字段为：" + entry.getKey());
// System.out.println("高亮结果为：" + entry.getValue().fragments()[0].toString());
// }
// }
esClient.close();
System.out.println(searchResponse);
response.setCharacterEncoding("UTF-8");
JSONObject allData = JSON.parseObject(String.valueOf(searchResponse));
response.getWriter().println(allData);
statement.close();
connection.close();
} catch (Exception e) {
e.printStackTrace();
}
}
运行结果及报错内容
01-Sep-2022 10:04:53.526 严重 [http-nio-8080-exec-2] org.apache.catalina.core.StandardWrapperValve.invoke 在路径为/BlogSystem的上下文中，Servlet[com.web.httpservlet.AllHttpServlet]的Servlet.service（）引发了具有根本原因的异常Servlet执行抛出一个异常
java.lang.ClassNotFoundException: org.elasticsearch.index.query.QueryBuilder
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1372)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1195)
at com.web.httpservlet.AllHttpServlet.doGet(AllHttpServlet.java:64)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:626)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
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 org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:201)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:544)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:698)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:364)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:616)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:831)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1629)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$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)
pom.xml:
<dependency>
<groupId>org.elasticsearch</groupId>
<artifactId>elasticsearch</artifactId>
<version>7.6.1</version>
</dependency>
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>elasticsearch-rest-high-level-client</artifactId>
<version>7.6.1</version>
</dependency>
我想要达到的结果
但是我将全文检索的代码封装成函数单独运行时是可以正常运行的。只是放到javaweb里，启动tomcat后发生错误。求告知是什么原因导致的，我该如何解决。
