以Java web的方式顯示圖片到瀏覽器以Java web的方式下載服務器文件到瀏覽器

以Spring Boot的方式顯示圖片或下載文件到瀏覽器請求例子：http://localhost:8080/image/1564550185144.jpeg

示例代碼：

import org.springframework.context.annotation.Configuration;import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;import java.io.File;import java.io.IOException;@Configurationpublic class ImageShow implements WebMvcConfigurer { @Override public void addResourceHandlers(ResourceHandlerRegistry registry) { File directory = new File('image'); String path = null; try { path = directory.getCanonicalPath(); }catch (IOException e){ e.printStackTrace(); } registry.addResourceHandler('/image/**').addResourceLocations('file:'+path+'/'); }}

運行結(jié)果：

顯示圖片

下載文件

補充：springboot 下載圖片并輸出瀏覽器

@GetMapping(value = 'v1/returnGroupCode',produces = MediaType.IMAGE_JPEG_VALUE) public byte[] returnGroupCode(@RequestParam('seriesUniqueCode') String seriesUniqueCode){ URL url = null; InputStream is = null; ByteArrayOutputStream outStream = null; HttpURLConnection httpUrl = null; try{ url = new URL(pdGroupcodeSeriesInfo.getQrCodeUrl()); httpUrl = (HttpURLConnection) url.openConnection(); httpUrl.connect(); httpUrl.getInputStream(); is = httpUrl.getInputStream(); outStream = new ByteArrayOutputStream(); //創(chuàng)建一個Buffer字符串 byte[] buffer = new byte[1024]; //每次讀取的字符串長度，如果為-1，代表全部讀取完畢 int len = 0; //使用一個輸入流從buffer里把數(shù)據(jù)讀取出來 while( (len=is.read(buffer)) != -1 ){//用輸出流往buffer里寫入數(shù)據(jù)，中間參數(shù)代表從哪個位置開始讀，len代表讀取的長度outStream.write(buffer, 0, len); } byte[] temp = outStream.toByteArray(); return temp; }

到此這篇關(guān)于以Spring Boot的方式顯示圖片或下載文件到瀏覽器的示例代碼的文章就介紹到這了,更多相關(guān)Spring Boot下載文件到瀏覽器內(nèi)容請搜索好吧啦網(wǎng)以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持好吧啦網(wǎng)！