76 lines
2.0 KiB
Java
76 lines
2.0 KiB
Java
package com.baeldung.mime;
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import java.io.IOException;
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import java.util.List;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.http.MediaType;
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import com.baeldung.mime.Foo;
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import com.fasterxml.jackson.core.type.TypeReference;
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import com.fasterxml.jackson.databind.ObjectMapper;
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public final class JacksonMarshaller implements IMarshaller {
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private final Logger logger = LoggerFactory.getLogger(JacksonMarshaller.class);
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private final ObjectMapper objectMapper;
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public JacksonMarshaller() {
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super();
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objectMapper = new ObjectMapper();
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}
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// API
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@Override
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public final <T> String encode(final T resource) {
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String entityAsJSON = null;
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try {
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entityAsJSON = objectMapper.writeValueAsString(resource);
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} catch (final IOException ioEx) {
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logger.error("", ioEx);
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}
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return entityAsJSON;
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}
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@Override
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public final <T> T decode(final String resourceAsString, final Class<T> clazz) {
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T entity = null;
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try {
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entity = objectMapper.readValue(resourceAsString, clazz);
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} catch (final IOException ioEx) {
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logger.error("", ioEx);
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}
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return entity;
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}
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@SuppressWarnings("unchecked")
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@Override
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public final <T> List<T> decodeList(final String resourcesAsString, final Class<T> clazz) {
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List<T> entities = null;
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try {
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if (clazz.equals(Foo.class)) {
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entities = objectMapper.readValue(resourcesAsString, new TypeReference<List<T>>() {
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// ...
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});
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} else {
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entities = objectMapper.readValue(resourcesAsString, List.class);
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}
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} catch (final IOException ioEx) {
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logger.error("", ioEx);
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}
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return entities;
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}
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@Override
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public final String getMime() {
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return MediaType.APPLICATION_JSON.toString();
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}
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}
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