weex学习之路(二)---组件封装（3）--图片上传

来源：互联网发布：大数据的实践包括哪些编辑：程序博客网时间：2024/06/07 15:29
图片上传是一个很常用的功能，所以做了一个简单的封装，代码如下
         <template><image @click="uploadImage" :src="uploadFileTipImage" :style="uploadNativeStyle"></image>   </template>    <script>import GlobalApiConfig from "../api/config/GlobalAipConfig";import weexUtils from "../utils/WeexUtils";const actionSheet = weex.requireModule('actionSheet');const photo = weex.requireModule('photo');const nat_camera = weex.requireModule('nat_camera');const nat_network_transfer = weex.requireModule('nat_network_transfer');//图片服务器地址const PIC_SERVICE_URL = GlobalApiConfig.PIC_SERVICE_URL;const PIC_SERVICE_DOMAIN = GlobalApiConfig.PIC_SERVICE_DOMAIN;export default {    props: {        //上传的提示图片        uploadFileTipImage: {            type: String,            default: ""        },        //上传区域宽度        width: {            type: Number,            default: 200        },        //上传区域高度        height: {            type: Number,            default: 200        },        //是否自动上传        autoUpload: {            type: Boolean,            default: true        },        //上传的文件类型        accept: {            type: String,            default: "*",        },        //可以选择的最大文件数量        selectedMaxNum: {            type: Number,            default: 1        },        type: {            //上传类型用来区分在一个页面有多个文件上传的时候来区分具体回调操作            type: String,            default: "upload"        },        orderNumber: {            type: Number,            default: 0        },        //裁图比例        proportion: {            type: Array,            default: [1, 1]        },        crop: {            default: true        },        radius:{ //圆角大小            default:0        }    },    data() {        const width = this.width;        const height = this.height;        let uploadNativeStyle = {            width: width + "px",            height: height + "px",        };        return {            uploadNativeStyle        }    },    methods: {        uploadByNative(filePath) {            const self = this;            console.log("上传filePath：" + filePath);            nat_network_transfer.upload({                url: PIC_SERVICE_URL,                path: filePath            }, (result) => {                console.log("-result-> " + JSON.stringify(result));                const {data, ok, progress} = result;                console.log(data);                console.log(ok);                if (progress) {                    console.log("上传中!");                    return;                }                if (!ok) {                    console.log("上传失败!");                    return;                }                if (data == null) {                    console.log("上传无结果!");                    return;                }                const resp = JSON.parse(data);                const {url} = resp;                const map = {};                result = {                    orderNumber: self.orderNumber,                    url: PIC_SERVICE_DOMAIN+ url                }                console.log("map->  " + JSON.stringify(map));                self.$emit("uploadCallback", {                    result,                    type: this.type,                    callback: function (width = 200, height = 200) {                        self.uploadNativeStyle = {                            width: width + "px",                            height: height + "px"                        }                    }                });            });        },        chooseImage() {            //在原生环境下先选择图片            //http://natjs.com/#/reference/media/image            const items = [];            items[0] = {'type': 0, 'message': '拍照'};            items[1] = {'type': 0, 'message': '从相册取'};            items[2] = {'type': 1, 'message': '取消'};            const self = this;            actionSheet.create({                'items': items,                'title': '提示',                'message': '请选择'            }, (ret) => {                let result = ret.result;                console.log("-图片选择或拍照结果-> " + JSON.stringify(ret));                if (result !== 'success') {                    console.log("图片选择或拍照失败");                    return;                }                const {value, index} = ret.data;                const proportion = {};                if (self.proportion.length === 0) {                    //表示不限制                } else {                    proportion.aspectX = self.proportion[0];                    proportion.aspectY = self.proportion[1]                }                const {aspectX, aspectY} = proportion;                let flag = index === 0;                photo.capture(flag, this.crop, {aspectX: aspectX, aspectY: aspectY}, (data) => {                    console.log("local path-> " + data);                    if (data === undefined || data === null) {                        weexUtils.toast("图片选择出现异常!");                        return;                    }                    self.uploadByNative(data);                }, (message) => {                    weexUtils.toast(message);                });            });        },        uploadImage(event) {            this.chooseImage();        }    },    beforeMount() {        console.log("this.rudius-> "+this.radius);        if (this.radius>0) {            this.uploadNativeStyle.borderRadius = this.radius + "px";        }    }}  </script><style scoped></style>  这个组件完全依赖了原生模块，其中3个是weex插件市场提供的，在官网上可以找到。photo模块需要客户端实现，提供图片裁剪，图片压缩等功能
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