Java连接Elasticsearch5.X的三种方式并附带代码（增删改查）
文章目录
- Elasticsearch官方为Java提供了三种客户端API:
- TranportClient
- 预备工作
- 具体的增删改查操作
- Java Low Level REST Client
- 预备工作
- 具体的增删改查代码
- Java High Level REST Client
- 预备工作
- 具体的增删改查代码：
- 可能遇到的问题 log4j的问题
Elasticsearch官方为Java提供了三种客户端API:
- TransportClient：这种方式通过TCP与Elasticsearch服务进行交互。还有 transport-netty4-client 的客户端（使用9300端口）
- Java Low Level REST Client:低级别的REST客户端，使用Apache HttpClient进行HTTP调用，简单封装了一下，通过http与集群交互，需要自己处理请求和响应,用户需自己编组请求JSON串，及解析响应JSON串。兼容所有ES版本。
- Java High Level REST Client:高级别的REST客户端，基于低级别的REST客户端，提供了面向方法的API,增加了编组请求JSON串、解析响应JSON串等相关api。使用的版本需要保持和ES服务端的版本一致，否则会有版本问题。同时请求参数和响应参数使用了elasticsearch定义的实体，方便从Java API Client迁移,Java High Level Rest Client完成elasticsearch请求响应实体转换为Java Low Level Rest Client的请求响应。即解决了Java API Client兼容问题，又解决了Java Low Level Rest Client封装使用问题（使用9200端口）
官方文档
9200端口是用于Http协议访问的，如果通过客户端访问需要通过9300端口才可以访问
TranportClient
预备工作
依赖
<dependencies><!--引入fastjson--><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.60</version></dependency><!-- elasticsearch依赖2.x的log4j --><dependency><groupId>org.apache.logging.log4j</groupId><artifactId>log4j-api</artifactId><version>2.8.2</version></dependency><dependency><groupId>org.apache.logging.log4j</groupId><artifactId>log4j-core</artifactId><version>2.8.2</version></dependency><!-- junit单元测试 --><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.12</version></dependency><!-- elasticsearch依赖 --><dependency><groupId>org.elasticsearch.client</groupId><artifactId>transport</artifactId><version>5.6.4</version></dependency></dependencies>
实体类，这个是我们封装实体类进行添加的时候使用
/*** 创建新Document时候可以用这种实体类的方式*/
public class Article {private Long id;private String title;private String content;//getter and setterpublic Long getId() {return id;}public void setId(Long id) {this.id = id;}public String getTitle() {return title;}public void setTitle(String title) {this.title = title;}public String getContent() {return content;}public void setContent(String content) {this.content = content;}
}
具体的增删改查操作
public class ESTranTest {/*** 创建索引*/@Testpublic void testCreateIndex() throws UnknownHostException {TransportClient transportClient = new PreBuiltTransportClient(Settings.EMPTY).addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));//创建索引 blog5CreateIndexResponse indexResponse = transportClient.admin().indices().prepareCreate("blog5").get();//确认输出：trueSystem.out.println(indexResponse.isAcknowledged());//trueSystem.out.println(indexResponse.isShardsAcked());transportClient.close();}/*** 删除索引*/@Testpublic void testDelIndex() throws Exception {//创建Client连接对象TransportClient transportClient = new PreBuiltTransportClient(Settings.EMPTY).addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));//删除名称为blog5的索引//多数据//DeleteIndexResponse deleteIndexResponse = transportClient.admin().indices() .prepareDelete("blog5", "blog").get();//#####//对象传参DeleteIndexResponse deleteIndexResponse = transportClient.admin().indices().delete(new DeleteIndexRequest("blog5")).get();//trueSystem.out.println(deleteIndexResponse.isAcknowledged());transportClient.close();}/*** 创建mapping*/@Testpublic void testCreateMapping() throws Exception {TransportClient transportClient = new PreBuiltTransportClient(Settings.EMPTY).addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));//exists方法，判断索引是否存在IndicesExistsResponse indicesExistsResponse = transportClient.admin().indices().exists(new IndicesExistsRequest("blog5")).get();//索引存在：falseSystem.out.println("索引存在：" + indicesExistsResponse.isExists());//判断索引是否存在if (!indicesExistsResponse.isExists()) {//不存在则创建索引 blog5CreateIndexResponse createIndexResponse = transportClient.admin().indices().prepareCreate("blog5").get();//创建索引：trueSystem.out.println("创建索引：" + createIndexResponse.isAcknowledged());}//添加映射/** 格式："mappings": {"article": {"properties": {"id": {"store": true,"type": "long"},"title": {"store": true,"type": "text"},"content": {"store": true,"type": "text"}}} */XContentBuilder xContentBuilder = XContentFactory.jsonBuilder().startObject().startObject("article").startObject("properties").startObject("id").field("store", true).field("type", "long").endObject().startObject("title").field("store", true).field("type", "text").endObject().startObject("content").field("store", true).field("type", "text").endObject().endObject().endObject().endObject();System.out.println(xContentBuilder.toString());//创建映射,映射到索引blog5、类型article上PutMappingRequest putMappingRequest = Requests.putMappingRequest("blog5").type("article").source(xContentBuilder);PutMappingResponse putMappingResponse = transportClient.admin().indices().putMapping(putMappingRequest).get();//trueSystem.out.println(putMappingResponse.isAcknowledged());transportClient.close();}/*** 创建Document** @throws Exception*/@Testpublic void testCreateDocument() throws Exception {TransportClient transportClient = new PreBuiltTransportClient(Settings.EMPTY).addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));//创建文档信息XContentBuilder xContentBuilder = XContentFactory.jsonBuilder().startObject().field("id", 3L).field("title", "ElasticSearch是一个基于Lucene的搜索服务器").field("content", "它提供了一个分布式多用户能力的全文搜索引擎，基于RESTful web接口。Elasticsearch是" + "用Java开发的，并作为Apache许可条款下的开放源码发布，是当前流行的企业级搜索引擎").endObject();//建立文档对象/*** 参数一 blog1：表示索引对象* 参数二 article：类型* 参数三 1：建立id */IndexResponse indexResponse = transportClient.prepareIndex("blog5", "article", "3").setSource(xContentBuilder).get();//CREATEDSystem.out.println(indexResponse.status());transportClient.close();}/*** 通过一个实体对象创建json方便很多** @throws Exception*/@Testpublic void testCreateDocumentByBean() throws Exception {TransportClient transportClient = new PreBuiltTransportClient(Settings.EMPTY).addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));//描述json 数据//{id:xxx, title:xxx, content:xxx}Article article = new Article();article.setId(2L);article.setTitle("ElasticSearch是一个基于Lucene的搜索服务器22");article.setContent("它提供了一个分布式多用户能力的全文搜索引擎，基于RESTful web接口22");//转成String类型String jsonStr = JSON.toJSONString(article);//建立文档IndexResponse indexResponse = transportClient.prepareIndex("blog5", "article", String.valueOf(article.getId())).setSource(jsonStr).get();//CREATEDSystem.out.println(indexResponse.status());transportClient.close();}/*** 这是基于transportClient.prepareUpdate这种方法进行更新的** @throws Exception*/@Testpublic void testUpdateDocumentByUpdate() throws Exception {TransportClient transportClient = new PreBuiltTransportClient(Settings.EMPTY).addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));Article article = new Article();article.setId(2L);article.setTitle("Edsfsdf基于Lucene的搜索服务器2222441111");article.setContent("基胜多负少的水电费于RESTful web接口22334");String jsonStr = JSON.toJSON(article).toString();//jsonStr={"id":2,"title":"Edsfsdf基于Lucene的搜索服务器222244","content":"基胜多负少的水电费于RESTful web接口22334"}System.out.println("jsonStr=" + jsonStr);//修改内容UpdateResponse updateResponse = transportClient.prepareUpdate("blog5", "article", String.valueOf(article.getId())).setDoc(jsonStr).get();//OKSystem.out.println(updateResponse.status());transportClient.close();}/*** 这是transportClient.update这种方法进行更新的** @throws Exception*/@Testpublic void testUpdateDocumentByUpdateRequest() throws Exception {TransportClient transportClient = new PreBuiltTransportClient(Settings.EMPTY).addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));Article article = new Article();article.setId(2L);article.setTitle("什么玩意这是更新以后的");article.setContent("确实是更新以后的哈你看看对不对");UpdateResponse updateResponse = transportClient.update(new UpdateRequest("blog5", "article", String.valueOf(article.getId())).doc(JSON.toJSONString(article))).get();System.out.println(updateResponse.status());transportClient.close();}/*** 删除Document** @throws Exception*/@Testpublic void testDeleteDocument() throws Exception {TransportClient transportClient = new PreBuiltTransportClient(Settings.EMPTY).addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));// prepareDelete 删除数据DeleteResponse deleteResponse = transportClient.prepareDelete("blog5", "article", "2").get();System.out.println(deleteResponse.status());transportClient.close();}/*** 根据查询条件进行删除数据*/@Testpublic void elasticsearchDeleteByQuery() throws Exception {TransportClient transportClient = new PreBuiltTransportClient(Settings.EMPTY).addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));BulkByScrollResponse response = DeleteByQueryAction.INSTANCE.newRequestBuilder(transportClient)// 指定查询条件,matchQuery是name的值text里面包括了这个内容就进行删除。默认使用标准分词器。.filter(QueryBuilders.matchQuery("content", "Apache"))// 指定索引名称.source("blog5").get();// 获取到删除的个数long deleted = response.getDeleted();// 打印输出删除的个数System.out.println(deleted);//1}/*** 异步删除* 监听,如果真正删除以后进行回调,打印输出删除确认的消息。*/@Testpublic void elasticsearchDeleteByQueryAsync() throws UnknownHostException {TransportClient transportClient = new PreBuiltTransportClient(Settings.EMPTY).addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));DeleteByQueryAction.INSTANCE.newRequestBuilder(transportClient).filter(QueryBuilders.matchQuery("id", 2L)).source("blog5").execute(new ActionListener<BulkByScrollResponse>() {// 删除以后的方法回调@Overridepublic void onResponse(BulkByScrollResponse response) {// 返回删除的个数long deleted = response.getDeleted();System.out.println("数据删除完毕！");// 打印删除的个数System.out.println("数据删除的个数: " + deleted);}@Overridepublic void onFailure(Exception e) {// 失败打印异常信息e.printStackTrace();}});// 先打印输出,正常执行完毕。再执行异步监听删除数据。try {System.out.println("开始异步删除操作!");// 休眠10秒钟Thread.sleep(5000);} catch (Exception e) {e.printStackTrace();}}/*** 查询全部*/@Testpublic void testFindAll() throws Exception {//创建客户端访问对象TransportClient transportClient = new PreBuiltTransportClient(Settings.EMPTY).addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));//QueryBuilders.matchAllQuery(),查询全部SearchResponse response = transportClient.prepareSearch("blog5").setTypes("article").setQuery(QueryBuilders.matchAllQuery()).get();//获取搜索结果SearchHits hits = response.getHits();System.out.println(hits.getTotalHits());//遍历结果SearchHit[] hits1 = hits.getHits();for (SearchHit hit : hits1) {System.out.println(hit.getSourceAsString());}transportClient.close();}/*** 根据id号进行条件查询* @throws Exception*/@Testpublic void testFindById() throws Exception {//创建客户端访问对象TransportClient transportClient = new PreBuiltTransportClient(Settings.EMPTY).addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));//按条件进行查询SearchResponse searchResponse = transportClient.prepareSearch("blog5").setTypes("article").setQuery(QueryBuilders.matchQuery("id", 2)).get();//获取搜索结果SearchHits hits = searchResponse.getHits();//遍历结果SearchHit[] hits1 = hits.getHits();for (SearchHit hit : hits1) {System.out.println(hit.getSourceAsString());}transportClient.close();}}
Java Low Level REST Client
预备工作
<!--引入fastjson--><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.60</version></dependency><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.11</version></dependency><dependency><groupId>org.elasticsearch.client</groupId><artifactId>elasticsearch-rest-client</artifactId><version>5.6.4</version></dependency>
具体的增删改查代码
import com.alibaba.fastjson.JSON;
import org.apache.http.HttpHost;
import org.apache.http.entity.ContentType;
import org.apache.http.nio.entity.NStringEntity;
import org.apache.http.util.EntityUtils;
import org.elasticsearch.client.Response;
import org.elasticsearch.client.RestClient;
import org.junit.Test;import java.io.IOException;
import java.util.Collections;
import java.util.Map;/*** @author td*/
public class Client {/*** 新建Document** @throws IOException*/@Testpublic void testCreateDocument() throws IOException {// 建立连接 注意9200端口 9300是tcp内部通信的RestClient restClient = RestClient.builder(new HttpHost("localhost", 9200, "http")).build();//描述json 数据//{id:xxx, title:xxx, content:xxx}Article article = new Article();article.setId(2L);article.setTitle("ElasticSearch是一个基于Lucene的搜索服务器22");article.setContent("它提供了一个分布式多用户能力的全文搜索引擎，基于RESTful web接口22");Map<String, String> params = Collections.emptyMap();Response put = restClient.performRequest("PUT", "/blog5/article/4",params,new NStringEntity(JSON.toJSONString(article), ContentType.APPLICATION_JSON));// System.out.println(JSON.toJSONString(article));// System.out.println(new NStringEntity(JSON.toJSONString(article)));System.out.println(put.getRequestLine());restClient.close();}/*** 更新操作** @throws Exception*/@Testpublic void testUpdateDocumentByUpdate() throws Exception {RestClient restClient = RestClient.builder(new HttpHost("localhost", 9200, "http")).build();Article article = new Article();article.setId(2L);article.setTitle("ElasticSearch是fdsfsdfsd22");article.setContent("它提供了一fsdsdfsdf多用户能力的全文搜索引擎，基于RESTful web接口22");Map<String, String> params = Collections.emptyMap();Response put = restClient.performRequest("POST", "/blog5/article/3",params,new NStringEntity(JSON.toJSONString(article),ContentType.APPLICATION_JSON));System.out.println(put.getRequestLine());}/*** 查找特定的Document** @throws IOException*/@Testpublic void testFindOne() throws IOException {RestClient restClient = RestClient.builder(new HttpHost("localhost", 9200, "http")).build();Response get = restClient.performRequest("GET", "/blog5/article/4", Collections.<String, String>emptyMap());String s = EntityUtils.toString(get.getEntity());System.out.println(s);restClient.close();}/*** 查找全部的Document** @throws IOException*/@Testpublic void testFindAll() throws IOException {RestClient restClient = RestClient.builder(new HttpHost("localhost", 9200, "http")).build();Response get = restClient.performRequest("GET", "/blog5/article/_search", Collections.<String, String>emptyMap());String s = EntityUtils.toString(get.getEntity());System.out.println(s);restClient.close();}/*** 删除指定id的Document** @throws IOException*/@Testpublic void deleteById() throws IOException {RestClient restClient = RestClient.builder(new HttpHost("localhost", 9200, "http")).build();Response get = restClient.performRequest("DELETE", "/blog5/article/1", Collections.<String, String>emptyMap());String s = EntityUtils.toString(get.getEntity());System.out.println(s);restClient.close();}
}Java High Level REST Client
因为High就是对low的封装，就不展开说了，直接说High
预备工作
<dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.12</version></dependency><!-- elasticsearch依赖5.x的log4j --><dependency><groupId>org.apache.logging.log4j</groupId><artifactId>log4j-api</artifactId><version>2.8.2</version></dependency><dependency><groupId>org.apache.logging.log4j</groupId><artifactId>log4j-core</artifactId><version>2.8.2</version></dependency><!--引入fastjson--><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.60</version></dependency><!--引入rest-high-level-client--><dependency><groupId>org.elasticsearch.client</groupId><artifactId>elasticsearch-rest-high-level-client</artifactId><version>5.6.4</version></dependency>
实体类
/*** 创建新Document时候可以用这种实体类的方式*/
public class Article {private Long id;private String title;private String content;//getter and setterpublic Long getId() {return id;}public void setId(Long id) {this.id = id;}public String getTitle() {return title;}public void setTitle(String title) {this.title = title;}public String getContent() {return content;}public void setContent(String content) {this.content = content;}
}
具体的增删改查代码：
public class HighLevel {/*** 新建Document** @throws IOException*/@Testpublic void testCreateDocument() throws IOException {// 建立连接 注意9200端口 9300是tcp内部通信的RestClient restClient = RestClient.builder(new HttpHost("localhost", 9200, "http")).build();RestHighLevelClient client = new RestHighLevelClient(restClient);//创建文档信息XContentBuilder xContentBuilder = XContentFactory.jsonBuilder().startObject().field("id", 3L).field("title", "1121211ElastisdfsdfsdfsdfsdcSearch是一个基于Lucene的搜索服务器").field("content", "它提供了一个分布式多用户能力的全文搜索引擎，基于RESTful web接口。Elasticsearch是" + "用Java开发的，并作为Apache许可条款下的开放源码发布，是当前流行的企业级搜索引擎").endObject();// index名 type名 id号IndexRequest request = new IndexRequest("blog", "article", "1").source(xContentBuilder);IndexResponse response = client.index(request);System.out.println(response.status());restClient.close();}/*** 通过实体类进行添加Document** @throws Exception*/@Testpublic void testCreateDocumentByBean() throws Exception {RestClient restClient = RestClient.builder(new HttpHost("localhost", 9200, "http")).build();RestHighLevelClient client = new RestHighLevelClient(restClient);//描述json 数据//{id:xxx, title:xxx, content:xxx}Article article = new Article();article.setId(2L);article.setTitle("ElasticSearch是一个基于Lucene的搜索服务器22");article.setContent("它提供了一个分布式多用户能力的全文搜索引擎，基于RESTful web接口22");//转成String类型String jsonStr = JSON.toJSONString(article);//建立文档IndexRequest request = new IndexRequest("blog", "article", "2").source(jsonStr, XContentType.JSON);IndexResponse response = client.index(request, new BasicHeader("header", "value"));System.out.println(response.status());restClient.close();}/*** 更新操作** @throws Exception*/@Testpublic void testUpdateDocumentByUpdate() throws Exception {RestClient restClient = RestClient.builder(new HttpHost("localhost", 9200, "http")).build();RestHighLevelClient client = new RestHighLevelClient(restClient);Article article = new Article();article.setId(2L);article.setTitle("Edsfsdf基于Lucene的搜索服务器2222441111");article.setContent("基胜多负少的水电费于RESTful web接口22334");String jsonStr = JSON.toJSON(article).toString();System.out.println("jsonStr=" + jsonStr);//修改内容UpdateRequest request = new UpdateRequest("blog", "article", "2").doc(jsonStr, XContentType.JSON);UpdateResponse update = client.update(request);//OKSystem.out.println(update.status());restClient.close();}/*** 删除Document** @throws Exception*/@Testpublic void testDeleteDocument() throws Exception {RestClient restClient = RestClient.builder(new HttpHost("localhost", 9200, "http")).build();RestHighLevelClient client = new RestHighLevelClient(restClient);// 删除数据DeleteRequest deleteRequest = new DeleteRequest("blog", "article", "2");DeleteResponse delete = client.delete(deleteRequest);System.out.println(delete.status());restClient.close();}/*** 查询blog表下的所有Document*/@Testpublic void testFindAll() throws Exception {RestClient restClient = RestClient.builder(new HttpHost("localhost", 9200, "http")).build();RestHighLevelClient client = new RestHighLevelClient(restClient);SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder().query(QueryBuilders.matchAllQuery());SearchRequest searchRequest = new SearchRequest("blog").source(searchSourceBuilder);SearchResponse response = client.search(searchRequest);SearchHits hits = response.getHits();for (SearchHit searchHit : hits.getHits()) {System.out.println(searchHit.getSourceAsString());}restClient.close();}/*** 查找特定的Document** @throws IOException*/@Testpublic void testFindOne() throws IOException {RestClient restClient = RestClient.builder(new HttpHost("localhost", 9200, "http")).build();RestHighLevelClient client = new RestHighLevelClient(restClient);GetRequest getRequest = new GetRequest("blog", "article", "1");GetResponse getResponse = client.get(getRequest);System.out.println(getResponse.getSourceAsString());restClient.close();}/*** SearchSourceBuilder().query的方法进行查询*/@Testpublic void testFindById() throws Exception {RestClient restClient = RestClient.builder(new HttpHost("localhost", 9200, "http")).build();RestHighLevelClient client = new RestHighLevelClient(restClient);SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder().query(QueryBuilders.matchQuery("content", "22"));SearchRequest searchRequest = new SearchRequest("blog").source(searchSourceBuilder);SearchResponse response = client.search(searchRequest);SearchHits hits = response.getHits();for (SearchHit searchHit : hits.getHits()) {System.out.println(searchHit.getSourceAsString());}restClient.close();}
}
可能遇到的问题 log4j的问题
在resource目录下配置log4j.properties
log4j.rootLogger=INFO,Consolelog4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.Target=System.out
log4j.appender.Console.Threshold=DEBUG
log4j.appender.Console.layout=org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=[%d]%l%5p:%m%nlog4j.appender.DebugFile=org.apache.log4j.RollingFileAppender
log4j.appender.DebugFile.File=../log/debugFile.log
#log4j.appender.DebugFile.File=debugFile.log
log4j.appender.DebugFile.Append=true
log4j.appender.DebugFile.Threshold=DEBUG
log4j.appender.DebugFile.layout=org.apache.log4j.PatternLayout
log4j.appender.DebugFile.layout.ConversionPattern=[%d]%l%5p:%m%n
log4j.appender.DebugFile.MaxFileSize=20MB
log4j.appender.DebugFile.MaxBackupIndex=10log4j.logger.com.ibatis=DEBUG
log4j.logger.com.ibatis.common.jdbc.SimpleDataSource=DEBUG
log4j.logger.com.ibatis.common.jdbc.ScriptRunner=DEBUG
log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate=DEBUGlog4j.logger.java.sql=DEBUG
log4j.logger.java.sql.Connection = INFO
log4j.logger.java.sql.Statement = DEBUG
log4j.logger.java.sql.PreparedStatement = DEBUG
log4j.logger.java.sql.ResultSet = DEBUGlog4j.logger.com.yuetao=DEBUG第二个配置文件 log4j2.xml
<?xml version="1.0" encoding="UTF-8"?>
<Configuration><Appenders><Console name="STDOUT" target="SYSTEM_OUT"><PatternLayout pattern="%d %-5p [%t] %C{2} (%F:%L) - %m%n"/></Console><RollingFile name="RollingFile" fileName="logs/strutslog1.log"filePattern="logs/$${date:yyyy-MM}/app-%d{MM-dd-yyyy}-%i.log.gz"><PatternLayout><Pattern>%d{MM-dd-yyyy} %p %c{1.} [%t] -%M-%L- %m%n</Pattern></PatternLayout><Policies><TimeBasedTriggeringPolicy /><SizeBasedTriggeringPolicy size="1 KB"/></Policies><DefaultRolloverStrategy fileIndex="max" max="2"/></RollingFile></Appenders><Loggers><Logger name="com.opensymphony.xwork2" level="WAN"/><Logger name="org.apache.struts2" level="WAN"/><Root level="warn"><AppenderRef ref="STDOUT"/></Root></Loggers></Configuration>本文来自互联网用户投稿，文章观点仅代表作者本人，不代表本站立场，不承担相关法律责任。如若转载，请注明出处。 如若内容造成侵权/违法违规/事实不符，请点击【内容举报】进行投诉反馈！