• spring-boot-starter-data-elasticsearch实现es的增删查改


    首先,必须吐槽一下,springboot这个elasticsearch包对于elasticsearch的支持十分不友好,目前只支持很低版本的elasticsearch,如果有哪位大牛知道如何兼容更高版本的elasticsearch,欢迎给我留言。

    es下载地址:https://www.elastic.co/downloads/elasticsearch

    我测试的es版本是2.4.5,spring-boot-starter-data-elasticsearch不支持太高版本的elasticsearch。

    另外,我是在windows下安装的,在官网下载好zip包后,到bin文件夹下,运行elasticsearch.bat,测试:http://localhost:9200/,能正确显示版本就可以了。

    安装好后,我们在pom.xml文件添加依赖

            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-data-elasticsearch</artifactId>
                <version>1.5.10.RELEASE</version>
            </dependency>
    在properties文件中添加es设置:
    spring.data.elasticsearch.cluster-name=elasticsearch  es默认
    spring.data.elasticsearch.cluster-nodes= 127.0.0.1:9300 es默认

    实体类:

    @Document(indexName = "monitoralarm", type = "monitorAlarms")//加上了@Document注解之后,默认情况下这个实体中所有的属性都会被建立索引、并且分词
    public class MonitorAlarmVO implements Serializable {
    
        @Id
        private Long id;
        private String uniqueKey;
        private Long monitoryPointId;
        private int modelDivisionType;
        private Long groupId;
        private int type;
        private int status;
        private String serverHost;
        private String data;
        private int picWidth;
        private int picHeight;
        private String objects;
        private Date alarmTime;
        private Date createTime;
        private boolean isRemove;
        private Date removeTime;
    }

    接口:

    import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
    
    public interface MonitorAlarmRepository extends ElasticsearchRepository<MonitorAlarmVO, Long> {
    
        //Page<MonitorAlarmVO> findByGroupId(Long groupId);
    
    
    }

    controller:

    public class MonitorAlarmController {
    
    
        @Autowired
        private MonitorAlarmRepository monitorAlarmRepository;
    
        //============================elasticsearch
        /**
         * 1、根据id查
         * @param id
         * @return
         */
        @GetMapping("/esById/{id}")
        public MonitorAlarmVO getBookById(@PathVariable Long id) {
            return monitorAlarmRepository.findOne(id);
        }
    
        /**
         * 2、查  ++:全文检索(根据整个实体的所有属性,可能结果为0个)
         * @param key
         * @return
         */
        @GetMapping("/esByKey/{key}")
        public List<MonitorAlarmVO> testSearch(@PathVariable String key) {
            QueryStringQueryBuilder builder = new QueryStringQueryBuilder(key);
            Iterable<MonitorAlarmVO> searchResult = monitorAlarmRepository.search(builder);
            Iterator<MonitorAlarmVO> iterator = searchResult.iterator();
            List<MonitorAlarmVO> list = new ArrayList<MonitorAlarmVO>();
            while (iterator.hasNext()) {
                list.add(iterator.next());
            }
            return list;
        }
    
        /**
         * 3、查   +++:分页、分数、分域(结果一个也不少)
         * @param page
         * @param size
         * @param q
         * @return
         * @return
         */
        @GetMapping("/{page}/{size}/{key}")
        public List<MonitorAlarmVO> searchCity(@PathVariable Integer page, @PathVariable Integer size, @PathVariable String key) {
    
            // 分页参数
            Pageable pageable = new PageRequest(page, size);
    
            // 分数,并自动按分排序
            FunctionScoreQueryBuilder functionScoreQueryBuilder = QueryBuilders.functionScoreQuery()
                    .add(QueryBuilders.boolQuery().should(QueryBuilders.matchQuery("name", key)),
                            ScoreFunctionBuilders.weightFactorFunction(1000)) // 权重:name 1000分
                    .add(QueryBuilders.boolQuery().should(QueryBuilders.matchQuery("message", key)),
                            ScoreFunctionBuilders.weightFactorFunction(100)); // 权重:message 100分
    
            // 分数、分页
            SearchQuery searchQuery = new NativeSearchQueryBuilder().withPageable(pageable)
                    .withQuery(functionScoreQueryBuilder).build();
    
            Page<MonitorAlarmVO> searchPageResults = monitorAlarmRepository.search(searchQuery);
            return searchPageResults.getContent();
    
        }
    
        /**
         * 4、增
         * @param monitorAlarmVO
         * @return
         */
        @PostMapping("/esInsert")
        public MonitorAlarmVO insertBook(MonitorAlarmVO monitorAlarmVO) {
            monitorAlarmRepository.save(monitorAlarmVO);
            return monitorAlarmVO;
        }
    
        /**
         * 5、删 id
         * @param id
         * @return
         */
        @DeleteMapping("/esDelete/{id}")
        public MonitorAlarmVO insertBook(@PathVariable Long id) {
            MonitorAlarmVO monitorAlarmVO = monitorAlarmRepository.findOne(id);
            monitorAlarmRepository.delete(id);
            return monitorAlarmVO;
        }
    
        /**
         * 6、改
         * @param monitorAlarmVO
         * @return
         */
        @PutMapping("/esUpdate")
        public MonitorAlarmVO updateBook(MonitorAlarmVO monitorAlarmVO) {
            monitorAlarmRepository.save(monitorAlarmVO);
            return monitorAlarmVO;
        }
    
    
        //============================elasticsearch
    }

    好的,我们启动试试,报了一个错误,提示如下:

    threw exception; nested exception is java.lang.NoSuchMethodError: org.jboss.netty.channel.socket.nio.NioWorker
     
    这个是因为我的项目里的dubbo/zookeeper的netty包和es的netty包冲突了导致启动不了,解决方法是排除其中一个的netty包,我这里选择排除dubbo和zookeeper的netty包试试,但是后面发现排除了netty包会导致dubbo出错,有两全其美的办法麻烦给我留言下。
    如下:
            <dependency>
                <groupId>com.alibaba.spring.boot</groupId>
                <artifactId>dubbo-spring-boot-starter</artifactId>
                <exclusions>
                    <exclusion>
                        <artifactId>netty</artifactId>
                        <groupId>org.jboss.netty</groupId>
                    </exclusion>
                </exclusions>
            </dependency>
            <dependency>
                <groupId>com.101tec</groupId>
                <artifactId>zkclient</artifactId>
                <exclusions>
                    <exclusion>
                        <groupId>org.slf4j</groupId>
                        <artifactId>slf4j-api</artifactId>
                    </exclusion>
                    <exclusion>
                        <groupId>log4j</groupId>
                        <artifactId>log4j</artifactId>
                    </exclusion>
                    <exclusion>
                        <groupId>org.slf4j</groupId>
                        <artifactId>slf4j-log4j12</artifactId>
                    </exclusion>
                    <exclusion>
                        <groupId>io.netty</groupId>
                        <artifactId>netty</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>

    最后,我们可以启动项目,访问试试了。

     
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  • 原文地址:https://www.cnblogs.com/tinyj/p/9977316.html
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