原生input-file图片上传,转base64存储到node或socket广播对应房间
做的第二版聊天室demo来玩,比第一版新增socket.io加入房间功能
基于前端:vue2+buefy(超喜欢这个ui,虽然没中文文档)+简单媒体查询响应式
服务端:node+express+socket.io(很优秀的第三方api)
只记录下自己的聊天室图片上传主要代码
template部分
上传图片,iconfont与input-file隐藏处理
<i class="iconfont icon-photo pr-4 uploadImg"> <input class="uploadImgInput" type="file" @change="addImg" ref="inputer" accept="image/png,image/jpeg,image/gif,image/jpg" /> i>
style处理input-flie占位隐藏
.uploadImg {
position: relative;
.uploadImgInput {
cursor: pointer !important;
width: 1.46rem;
height: 100%;
z-index: 10000;
opacity: 0;
position: absolute;
left: 0;
}
}
methods,通过HTML5的new FileReader(),将图片转换base64传递socket服务端
addImg(e) { const input = e.target; const files = e.target.files; if (files && files[0]) { const file = files[0]; if (file.size > 1024 * 1024 * 3) { this.$buefy.notification.open({ message: `文件大小不能超过3M`, duration: 3500, progressBar: true, type: "is-danger", pauseOnHover: true, position: "is-bottom-left", }); input.value = ""; return false; }if ( file.type != "image/png" && file.type != "image/jpeg" && file.type != "image/gif" && file.type != "image/jpg" ) { this.$buefy.notification.open({ message: `不支持该文件类型`, duration: 3500, progressBar: true, type: "is-danger", pauseOnHover: true, position: "is-bottom-left", }); return false; }
this.uploadImg(files[0]); } },
//上传图片 uploadImg(file) { let imgName = file.name.split(".")[0].toString(); const reader = new FileReader(); reader.readAsDataURL(file); reader.onloadend = () => { this.$socket.emit("sendImg", { reader: reader.result, imgName, }); }; },
服务端socket.io处理,注释掉的是存本地的,我这里不存只做对应房间广播中转回客户端
socket.on("sendImg", ({ reader, imgName }) => {
// const splitted = reader.split(';base64,');
// const format = splitted[0].split('/')[1];
// fs.writeFileSync(`./images/${imgName}.` + format, splitted[1], { encoding: 'base64' });
const user = getCurrentUser(socket.id);
io.to(user.roomName).emit('img', sendImg(user.userName, reader, imgName))
});
客户端socket监听
img(data) { console.log("img", data); const isMe = this.userName === data.userName; const res = Object.assign(data, { isMe }); this.msgList.push(res); this.scrollFunc(); },
初版效果