SPR-5823 - JSON HttpMessageConverter

org.springframework.web/src/main/java/org/springframework/http/converter/json/JacksonHttpMessageConverter.java

@@ -0,0 +1,88 @@
+/*
+ * Copyright 2002-2009 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
+ *
+ *      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 org.springframework.http.converter.json;
+
+import java.io.IOException;
+import java.nio.charset.Charset;
+
+import org.codehaus.jackson.JsonEncoding;
+import org.codehaus.jackson.JsonFactory;
+import org.codehaus.jackson.JsonGenerator;
+import org.codehaus.jackson.map.MappingJsonFactory;
+import org.codehaus.jackson.map.ObjectMapper;
+
+import org.springframework.http.HttpInputMessage;
+import org.springframework.http.HttpOutputMessage;
+import org.springframework.http.MediaType;
+import org.springframework.http.converter.AbstractHttpMessageConverter;
+import org.springframework.http.converter.HttpMessageNotReadableException;
+import org.springframework.http.converter.HttpMessageNotWritableException;
+import org.springframework.util.Assert;
+
+/**
+ * @author Arjen Poutsma
+ * @since 3.0
+ */
+public class JacksonHttpMessageConverter<T> extends AbstractHttpMessageConverter<T> {
+
+	private ObjectMapper objectMapper = new ObjectMapper();
+
+	private JsonFactory jsonFactory = new MappingJsonFactory();
+
+	private JsonEncoding encoding = JsonEncoding.UTF8;
+
+	public JacksonHttpMessageConverter() {
+		super(new MediaType("application", "json"));
+	}
+
+	public void setObjectMapper(ObjectMapper objectMapper) {
+		Assert.notNull(objectMapper, "'objectMapper' must not be null");
+		this.objectMapper = objectMapper;
+	}
+
+	public void setJsonFactory(JsonFactory jsonFactory) {
+		Assert.notNull(jsonFactory, "'jsonFactory' must not be null");
+		this.jsonFactory = jsonFactory;
+	}
+
+	public void setEncoding(JsonEncoding encoding) {
+		this.encoding = encoding;
+	}
+
+	public boolean supports(Class<? extends T> clazz) {
+		return objectMapper.canSerialize(clazz);
+	}
+
+	@Override
+	protected T readInternal(Class<T> clazz, HttpInputMessage inputMessage)
+			throws IOException, HttpMessageNotReadableException {
+		return objectMapper.readValue(inputMessage.getBody(), clazz);
+	}
+
+	@Override
+	protected MediaType getContentType(T t) {
+		Charset charset = Charset.forName(encoding.getJavaName());
+		return new MediaType("application", "json", charset);
+	}
+
+	@Override
+	protected void writeInternal(T t, HttpOutputMessage outputMessage)
+			throws IOException, HttpMessageNotWritableException {
+		JsonGenerator jsonGenerator = jsonFactory.createJsonGenerator(outputMessage.getBody(), encoding);
+		objectMapper.writeValue(jsonGenerator, t);
+	}
+}

org.springframework.web/src/main/java/org/springframework/http/converter/json/package-info.java

@@ -0,0 +1,23 @@
+/*
+ * Copyright 2002-2009 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
+ *
+ *      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.
+ */
+
+/**
+ *
+ * Provides a HttpMessageConverter implementations for handling JSON.
+ *
+ */
+package org.springframework.http.converter.json;
+