1.1 将base64字符串转为图片 代码语言:javascript 复制 /** 将base64字符串转为图片 */+(UIImage*)stringToImage:(NSString*)str{NSData*imageData=[[NSData alloc]initWithBase64EncodedString:str options:NSDataBase64DecodingIgnoreUnknownCharacters];UIImage*photo=[UIImage imageWithData:imageData];returnphot...
//把base64压缩后处理为base64functioncompressBase64Image(base64Data, maxWidth, maxHeight, callback) {varimg =newImage(); img.onload=function() {varoriginWidth =this.width;varoriginHeight =this.height;vartargetWidth =originWidth;vartargetHeight =originHeight;if(originWidth > maxWidth || originH...
JavaScript – Convert Image to Base64 String From: https://bytenota.com/javascript-convert-image-to-base64-string/ his post shows you two approaches how to convert an image to a Base64 string using JavaScript: HTML5 Canvas and FileReader. 1. Approach 1: HTML5 Canvas example.js function ...
代码语言:javascript 复制 publicSystem.Drawing.ImageBase64ToImage(string base64String){byte[]imageBytes=Convert.FromBase64String(base64String);MemoryStream ms=newMemoryStream(imageBytes,0,imageBytes.Length);ms.Write(imageBytes,0,imageBytes.Length);System.Drawing.Image image=System.Drawing.Image.FromStre...
在前端,我们可以通过Javascript将Base64字符串解析为图片并在网页中显示: functionbase64ToImage(base64String){varimg=newImage();img.src='data:image/png;base64,'+base64String;document.body.appendChild(img);}varbase64String='...';// 这里填写上面Java代码输出的Base64字符串base64ToImage(base64String...
newFileReader()reader.onload=()=>{base64String=btoa(reader.result)}reader.readAsBinaryString(file)})convertButton.addEventListener("click",()=>{letimgElement=document.getElementById("imageBase64");imgElement.src=`data:image/png;base64,${base64String}`;// set image srcconsole.log(base64String)...
public static String base64ToImage(String base64Str, String rootDir, String dir) throws IOException { String prefix = "data:image/";///jpeg;base64,"; if (base64Str.startsWith(prefix)) { base64Str = base64Str.substring(base64Str.indexOf(";base64,") + 8); ...
public class ImageUtils { /** * 将网络图片进行Base64位编码 * * @param imgUrl * 图片的url路径,如http://...xx.jpg * @return */ public static String encodeImgageToBase64(URL imageUrl) {// 将图片文件转化为字节数组字符串,并对其进行Base64编码处理 Byte...
将base64字符串发送到服务器:在JavaScript中,使用XMLHttpRequest或fetch等方法将base64编码的字符串发送到服务器。 function sendBase64ToServer(base64String) { const formData = new FormData(); formData.append("image", base64String); fetch("/upload", { ...
web前端将得到的base64编码的图片通过<img>标签展示到页面中(MVVM框架,双向绑定src): // javascript 代码// params.photo即客户端传过来的base64编码的photothis.imageUrl='data:image/png;base64,'+params.photo; // vue模板代码<img v-if="imageUrl":src="imageUrl">...