SpringBoot Elasticsearch组合查询封装

最近项目组需要用到Elasticsearch，封装了ESQueryBuilder方便条件组合，结合ES工具类使用效果更佳，下面是ES工具类传送门：

SpringBoot Elasticsearch工具类封装

本文包括ES四大查询模式构建工具类，一个查询模式定义类，一个构建工厂类，一个最终拼装类。使用了简单工厂设计模式加反射，特此记录便于日后查阅。

1、代码结构

2、maven依赖

<dependency>
    <groupId>org.elasticsearch.plugin</groupId>
    <artifactId>transport-netty4-client</artifactId>
    <version>6.7.2</version>
</dependency>

3、IESQueryBuilders

public interface IESQueryBuilders {
    IESQueryBuilders termQuery(String name, String... valve) throws  Exception;
    IESQueryBuilders wildcardQuery(String name, String... values) throws Exception;
    IESQueryBuilders rangeQuery(String name, String from, String to) throws Exception;
    BoolQueryBuilder getBoolQueryBuilder();
}

4、ESMust

public class ESMust implements IESQueryBuilders {
 
    private BoolQueryBuilder boolQueryBuilder = new BoolQueryBuilder();
 
    @Override
    public BoolQueryBuilder getBoolQueryBuilder() {
        return boolQueryBuilder;
    }
    @Override
    public ESMust termQuery(String name, String... values)  throws Exception {
        boolQueryBuilder.must(QueryBuilders.termsQuery(name, values));
        return this;
    }
 
    @Override
    public ESMust wildcardQuery(String name, String... values)  throws Exception{
        for (String value : values){
            boolQueryBuilder.must(QueryBuilders.wildcardQuery(name, "*" + value + "*"));
        }
        return this;
    }
 
    @Override
    public ESMust rangeQuery(String name, String from, String to) throws Exception {
        boolQueryBuilder.must(QueryBuilders.rangeQuery(name).from(from, true).to(to, true));
        return this;
    }
}

5、ESMustNot

public class ESMustNot implements IESQueryBuilders {
 
    private BoolQueryBuilder boolQueryBuilder = new BoolQueryBuilder();
    @Override
    public BoolQueryBuilder getBoolQueryBuilder() {
        return boolQueryBuilder;
    }
 
    @Override
    public ESMustNot termQuery(String name, String... values)  throws Exception {
        boolQueryBuilder.mustNot(QueryBuilders.termQuery(name, values));
        return this;
    }
 
    @Override
    public ESMustNot wildcardQuery(String name, String... values) throws Exception {
        for (String value : values){
            boolQueryBuilder.mustNot(QueryBuilders.wildcardQuery(name, "*" + value + "*"));
        }
        return this;
    }
 
    @Deprecated
    public ESMustNot rangeQuery(String name, String from, String to) throws Exception {
        return null;
    }
}

6、ESShould

public class ESShould implements IESQueryBuilders {
    private BoolQueryBuilder boolQueryBuilder = new BoolQueryBuilder();
    @Override
    public BoolQueryBuilder getBoolQueryBuilder() {
        return boolQueryBuilder;
    }
 
    @Override
    public ESShould termQuery(String name, String... values) throws Exception {
        boolQueryBuilder.should(QueryBuilders.termsQuery(name, values));
        return this;
    }
 
    @Override
    public ESShould wildcardQuery(String name, String... values) throws Exception {
        for (String value : values){
            boolQueryBuilder.should(QueryBuilders.wildcardQuery(name, "*" + value + "*"));
        }
        return this;
    }
 
    @Deprecated
    public ESShould rangeQuery(String name, String from, String to) throws Exception {
        return null;
    }
}

7、ESFilter

public class ESFilter implements IESQueryBuilders {
    private BoolQueryBuilder boolQueryBuilder = new BoolQueryBuilder();
    @Override
    public BoolQueryBuilder getBoolQueryBuilder() {
        return boolQueryBuilder;
    }
 
    @Override
    public ESFilter termQuery(String name, String... values) throws Exception {
        boolQueryBuilder.filter(QueryBuilders.termsQuery(name, values));
        return this;
    }
 
    @Override
    public ESFilter wildcardQuery(String name, String... values) throws Exception {
        for (String value : values){
            boolQueryBuilder.filter(QueryBuilders.wildcardQuery(name, "*" + value + "*"));
        }
        return this;
    }
 
    @Deprecated
    public ESFilter rangeQuery(String name, String from, String to) throws Exception {
 
        return null;
    }
}

8、ESQueryMode

public enum ESQueryMode implements Serializable{
      MUST("com.example.esbuilder.ESMust"),
        MUST_NOT("com.example.esbuilder.ESMustNot"),
        SHOULD("com.example.esbuilder.ESShould"),
        FILTER("com.example.esbuilder.ESFilter");
 
    private String mode;
 
    ESQueryMode(String mode) {
        this.mode = mode;
    }
 
    public String mode() {
        return mode;
    }
}

9、ESQueryBuilderFactory

public class ESQueryBuilderFactory {
 
    public static IESQueryBuilders creatESQueryBuilder(ESQueryMode mode) throws ClassNotFoundException, IllegalAccessException, InstantiationException {
        Class<?> clazz = Class.forName(mode.mode());
        return (IESQueryBuilders) clazz.newInstance();
    }
}

10、IESQueryProduce

/**
 * @Classname: com.openailab.oascloud.datacenter.common.build.IESQueryProduce
 * @Description: ES组装器
 * @Author: zxzhang
 * @Date: 2019/7/9
 */
public interface IESQueryProduce {
    /**
     * 获取构造器
     *
     * @param
     * @return org.elasticsearch.index.query.BoolQueryBuilder
     * @author zxzhang
     * @date 2019/7/9
     */
    BoolQueryBuilder getBoolQueryBuilder();

    /**
     * 获取组装器
     *
     * @param esQueryBuilders
     * @return com.openailab.oascloud.datacenter.common.build.IESQueryProduce
     * @author zxzhang
     * @date 2019/7/9
     */
    IESQueryProduce getProduct(IESQueryBuilders esQueryBuilders);
}

11、ESQueryProduce

public class ESQueryProduce implements IESQueryProduce {
 
    private BoolQueryBuilder boolQueryBuilder = new BoolQueryBuilder();
 
    @Override
    public BoolQueryBuilder getBoolQueryBuilder() {
        return boolQueryBuilder;
    }
    @Override
    public IESQueryProduce getProduct(IESQueryBuilders esQueryBuilders) {
        boolQueryBuilder.must(esQueryBuilders.getBoolQueryBuilder());
        return this;
    }
}

然后就能自由的拼接复杂的es查询语句了。

比如：

IESQueryBuilders must = ESQueryBuilderFactory.creatESQueryBuilder(ESQueryMode.MUST);
must.termQuery("termName", "value1","value1");
must.wildcardQuery("wildName","value1");
 
IESQueryBuilders should = ESQueryBuilderFactory.creatESQueryBuilder(ESQueryMode.SHOULD);
should.wildcardQuery("wildName", "value1","value2");
 
BoolQueryBuilder boolQueryBuilder = esQueryProduce.getProduct(must).getProduct(should).getBoolQueryBuilder();

然后把最终生成的boolQueryBuilder放在SearchRequestBuilder中查询就可以了。

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