spring-data-elasticsearch JsonUtils 源码
spring-data-elasticsearch JsonUtils 代码
文件路径：/src/main/java/org/springframework/data/elasticsearch/client/elc/JsonUtils.java
/*
* Copyright 2021-2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.data.elasticsearch.client.elc;
import co.elastic.clients.json.JsonpMapper;
import jakarta.json.stream.JsonGenerator;
import java.io.ByteArrayOutputStream;
import java.io.UnsupportedEncodingException;
import java.nio.charset.StandardCharsets;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.lang.Nullable;
/**
* @author Peter-Josef Meisch
* @since 4.4
*/
final class JsonUtils {
private static final Log LOGGER = LogFactory.getLog(JsonUtils.class);
private JsonUtils() {}
public static String toJson(Object object, JsonpMapper mapper) {
// noinspection SpellCheckingInspection
ByteArrayOutputStream baos = new ByteArrayOutputStream();
JsonGenerator generator = mapper.jsonProvider().createGenerator(baos);
mapper.serialize(object, generator);
generator.close();
String json = "{}";
try {
json = baos.toString("UTF-8");
} catch (UnsupportedEncodingException e) {
LOGGER.warn("could not read json", e);
}
return json;
}
@Nullable
public static String queryToJson(@Nullable co.elastic.clients.elasticsearch._types.query_dsl.Query query, JsonpMapper mapper) {
if (query == null) {
return null;
}
var baos = new ByteArrayOutputStream();
var generator = mapper.jsonProvider().createGenerator(baos);
query.serialize(generator, mapper);
generator.close();
return baos.toString(StandardCharsets.UTF_8);
}
}
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