cn.sliew.carp.framework.web.converter.JacksonEnumConverter Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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
*
* http://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 cn.sliew.carp.framework.web.converter;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.core.convert.ConversionFailedException;
import org.springframework.core.convert.TypeDescriptor;
import org.springframework.core.convert.converter.GenericConverter;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;
public class JacksonEnumConverter implements GenericConverter {
private Set set;
private ObjectMapper mapper;
public JacksonEnumConverter(ObjectMapper mapper) {
set = new HashSet<>();
set.add(new ConvertiblePair(String.class, Enum.class));
this.mapper = mapper;
}
@Override
public Set getConvertibleTypes() {
return set;
}
@Override
public Object convert(Object value, TypeDescriptor sourceType, TypeDescriptor targetType) {
if (value == null) {
return null;
}
try {
return mapper.readValue("\"" + value + "\"", targetType.getType());
} catch (IOException e) {
throw new ConversionFailedException(sourceType, targetType, value, e);
}
}
}