spring-batch JsonRecordSeparatorPolicy 源码
spring-batch JsonRecordSeparatorPolicy 代码
文件路径：/spring-batch-infrastructure/src/main/java/org/springframework/batch/item/file/separator/JsonRecordSeparatorPolicy.java
/*
* Copyright 2006-2007 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.batch.item.file.separator;
import org.springframework.util.StringUtils;
/**
* JSON-based record separator. Waits for a valid JSON object before returning a complete
* line. A valid object has balanced braces ({}), possibly nested, and ends with a closing
* brace. This separator can be used to split a stream into JSON objects, even if those
* objects are spread over multiple lines, e.g.
*
* <pre>
* {"foo": "bar",
* "value": { "spam": 2 }}
* {"foo": "rab",
* "value": { "spam": 3, "foo": "bar" }}
* </pre>
*
* @author Dave Syer
*
*/
public class JsonRecordSeparatorPolicy extends SimpleRecordSeparatorPolicy {
/**
* True if the line can be parsed to a JSON object.
*
* @see RecordSeparatorPolicy#isEndOfRecord(String)
*/
@Override
public boolean isEndOfRecord(String line) {
return StringUtils.countOccurrencesOf(line, "{") == StringUtils.countOccurrencesOf(line, "}")
&& line.trim().endsWith("}");
}
}
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