Added controller for returning image in response body with configuration via java class
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@ -1,9 +1,15 @@
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package com.baeldung.spring.web.config;
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import java.util.ArrayList;
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import java.util.List;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.ComponentScan;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.core.io.ClassPathResource;
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import org.springframework.http.MediaType;
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import org.springframework.http.converter.ByteArrayHttpMessageConverter;
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import org.springframework.http.converter.HttpMessageConverter;
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import org.springframework.web.multipart.commons.CommonsMultipartResolver;
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import org.springframework.web.servlet.ViewResolver;
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import org.springframework.web.servlet.config.annotation.EnableWebMvc;
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@ -69,4 +75,25 @@ public class WebConfig extends WebMvcConfigurerAdapter {
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return bean;
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}
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@Override
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public void extendMessageConverters(final List<HttpMessageConverter<?>> converters) {
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converters.add(byteArrayHttpMessageConverter());
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}
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@Bean
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public ByteArrayHttpMessageConverter byteArrayHttpMessageConverter() {
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final ByteArrayHttpMessageConverter arrayHttpMessageConverter = new ByteArrayHttpMessageConverter();
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arrayHttpMessageConverter.setSupportedMediaTypes(getSupportedMediaTypes());
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return arrayHttpMessageConverter;
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}
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private List<MediaType> getSupportedMediaTypes() {
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final List<MediaType> list = new ArrayList<MediaType>();
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list.add(MediaType.IMAGE_JPEG);
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list.add(MediaType.IMAGE_PNG);
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list.add(MediaType.APPLICATION_OCTET_STREAM);
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return list;
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}
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}
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@ -0,0 +1,27 @@
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package com.baeldung.web.controller;
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import java.io.IOException;
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import java.io.InputStream;
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import javax.servlet.ServletContext;
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import org.apache.commons.io.IOUtils;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.http.MediaType;
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import org.springframework.stereotype.Controller;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RequestMethod;
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import org.springframework.web.bind.annotation.ResponseBody;
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@Controller
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public class ImageController {
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@Autowired
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ServletContext servletContext;
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@RequestMapping(value = "/image-byte-array", method = RequestMethod.GET, produces = MediaType.IMAGE_JPEG_VALUE)
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public @ResponseBody byte[] getImageAsByteArray() throws IOException {
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final InputStream in = servletContext.getResourceAsStream("/WEB-INF/images/image-example.jpg");
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return IOUtils.toByteArray(in);
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}
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}
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