springboot2.2.7集成elasticsearch7.6.2 gradle插件环境
这几天一直都在尝试，当然也浏览了大量博主的帖子，最后都失败了。
直到发现了这位珍宝博主，阿门！！原来并不是所有人都会写通俗易懂的博客。。。
废话说完了，现在开始集成：
1 下载ES7.6.2版本 https://www.elastic.co/cn/downloads/past-releases#elasticsearch ，解压后打开config\elasticsearch.yml并添加配置:
# 解决启动失败问题
xpack.ml.enabled: false
# 解决head插件连接
http.cors.enabled: true
http.cors.allow-origin: "*"2 下载ik分词 https://github.com/medcl/elasticsearch-analysis-ik/releases，解压后复制到es的plugins文件夹下并改名 analysis-ik
3 下载head插件 https://github.com/mobz/elasticsearch-head,解压后使用cmd在es-head文件夹下运行 npm run start，如果 没有npm、nodejs环境的需要去安装
4 （可不安装）下载cerebro https://github.com/lmenezes/cerebro/releases，解压后使用cmd在bin目录中运行 cerebro.bat
5 初始化springboot2.2.7环境
5-1 配置EsConfig
@Component
@PropertySource("classpath:application.yml") //配置文件地址，可以自定义
@ConfigurationProperties("elasticsearch") //属性前缀
public class ElasticSearchClientConfig {
// @Value("${elasticsearch.hostList}")
private String hostList;//配置文件中的属性
public String getHostList() {
return hostList;
}
public void setHostList(String hostList) {
this.hostList = hostList;
}
@Bean(value = "RestHighLevelClient", destroyMethod = "close")
public RestHighLevelClient restHighLevelClient() {
//通过逗号分割节点
String[] split = hostList.split(",");
HttpHost[] httpHosts = new HttpHost[split.length];
for (int i = 0; i < split.length; i++) {
//通过冒号分离出每一个节点的ip,port
String[] split1 = split[i].split(":");
//这里http写固定了，只为测试使用，可以通过读取配置文件赋值的方式优化
httpHosts[i] = new HttpHost(split1[0], Integer.parseInt(split1[1]), "http");
}
return new RestHighLevelClient(RestClient.builder(httpHosts));
}
}5-2 application.yml配置
elasticsearch:
hostList: localhost:9200 #多个节点用逗号隔开5-3 build.gradle配置
plugins {
id 'org.springframework.boot' version '2.2.7.RELEASE'
id 'io.spring.dependency-management' version '1.0.9.RELEASE'
id 'java'
}
group = 'com.example'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '1.8'
configurations {
compileOnly {
extendsFrom annotationProcessor
}
}
repositories {
maven { url "http://maven.aliyun.com/nexus/content/groups/public" }
}
dependencies {
compile 'org.projectlombok:lombok'
testImplementation('org.springframework.boot:spring-boot-starter-test') {
exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
}
implementation 'org.springframework.boot:spring-boot-starter'
compile group: 'org.springframework.boot', name: 'spring-boot-starter-web', version: '2.2.7.RELEASE'
// https://mvnrepository.com/artifact/com.alibaba/fastjson
compile group: 'com.alibaba', name: 'fastjson', version: '1.2.68'
// https://mvnrepository.com/artifact/org.elasticsearch.client/elasticsearch-rest-high-level-client
compile group: 'org.elasticsearch.client', name: 'elasticsearch-rest-high-level-client', version: '7.6.2'
// https://mvnrepository.com/artifact/org.elasticsearch/elasticsearch
compile group: 'org.elasticsearch', name: 'elasticsearch', version: '7.6.2'
// https://mvnrepository.com/artifact/org.elasticsearch.client/elasticsearch-rest-client
compile group: 'org.elasticsearch.client', name: 'elasticsearch-rest-client', version: '7.6.2'
}
test {
useJUnitPlatform()
}
5-4 使用单元测试验证
@Slf4j
@SpringBootTest
class RestHighLevelClientTests {
@Autowired
@Qualifier("RestHighLevelClient")
private RestHighLevelClient client;
/**
* 添加数据
* @throws IOException
*/
@Test
public void indexAdd() throws IOException {
UserTest userTest = new UserTest();
userTest.setName("董28");
userTest.setSex("男");
//由于客户端不支持自定义实体对象类作为添加数据的参数，所以提前先将对象转化为Map对象
String s = JSON.toJSONString(userTest);
JSONObject json = JSONObject.parseObject(s);
Map map = json;
System.out.println(map);
IndexRequest indexRequest = new IndexRequest("book")
.source(map);
//异步
client.indexAsync(indexRequest, RequestOptions.DEFAULT, new ActionListener() {
@Override
public void onResponse(IndexResponse indexResponse) {
System.out.println(indexResponse);
if (indexResponse.getResult() == DocWriteResponse.Result.CREATED) {
//新建
} else if (indexResponse.getResult() == DocWriteResponse.Result.UPDATED) {
//修改
}
ReplicationResponse.ShardInfo shardInfo = indexResponse.getShardInfo();
if (shardInfo.getTotal() != shardInfo.getSuccessful()) {
//
}
if (shardInfo.getFailed() > 0) {
for (ReplicationResponse.ShardInfo.Failure failure : shardInfo.getFailures()) {
String reason = failure.reason();
}
}
}
@Override
public void onFailure(Exception e) {
System.out.println("exception...");
}
});
}
/**
* 通过索引index,id查询
*
*/
@Test
public void get1() throws IOException {
GetRequest getRequest = new GetRequest("posts", "0DSIHnIBkMTi7Cf1XtQr");
/*FetchSourceContext fetchSourceContext = new FetchSourceContext(true, new String[]{"sex"}, Strings.EMPTY_ARRAY);
getRequest.fetchSourceContext(fetchSourceContext)*/
GetResponse getResponse = client.get(getRequest, RequestOptions.DEFAULT);
if (getResponse.isExists()) {
log.info("getResponse[{}]", getResponse);
log.info("getResponse.getId()[{}]", getResponse.getId());
log.info("getResponse.getSource()[{}]", getResponse.getSource());
log.info("getResponse.getSourceAsString()[{}]", getResponse.getSourceAsString());
log.info("getResponse.getSourceAsMap()[{}]", getResponse.getSourceAsMap());
UserTest userTest1 = JSONObject.parseObject(getResponse.getSourceAsString(), UserTest.class);
log.info("userTest1[{}]", userTest1);
String jsonString = JSON.toJSONString(getResponse.getSource());
UserTest userTest2 = JSONObject.parseObject(jsonString, UserTest.class);
log.info("userTest2[{}]", userTest2);
}
}
@Data
@AllArgsConstructor
@NoArgsConstructor
public static class UserTest {
private int id;
private String name;
private String sex;
private Others others = new Others("[email protected]", "199");
}
@Data
@AllArgsConstructor
public static class Others {
private String email;
private String phone;
}
}