study_wxapp/pages/post/post.js

const util = require("../../utils/util");

const app = getApp()
Page({

  data: {
    postId:0,
    info:{},
    content:''
  },
  onLoad: function (options) {
    let postId = +options.postId||7356;
    this.setData({postId})
  },
  onShow: function(){
    this.loadData()
  },
  preview( e ){
    var imgs = [];
    let content = this.data.info.content||''
    content.replace(/<img [^>]*src=['"]([^'"]+)[^>]*>/gi, function (match, capture) {
      imgs.push(capture);
    });
    console.log("url",content, imgs)
    if( imgs.length > 0 ){
      wx.previewImage({
        current: imgs[0],
        urls: imgs
      })
    }
  },
  download( ){
    let url = this.data.info.sourceUrl;
    if( !url ){
      util.showModel("下载失败", "无附件内容")
      return
    }
    wx.downloadFile({
      url: url,
      timeout: 0,
      success: (res) => {
        var rr=res.tempFilePath;
        wx.openDocument({
          filePath:rr,
          showMenu: true,
          success(res) {
            wx.showToast({
              title: '保存成功',
              icon: 'success',
              duration: 2000
            })
          }
        })
      },
      fail: (res) => {
        console.log("res_fail", res)
      },
      complete: (res) => {
        console.log("res_complete", res)
      },
    })
  },
  loadData(){
    let postId = this.data.postId
    app.formPost( "Post.getPostInfo", {postId}).then( res=>{
      if( res.code == 200 ){
        let info = res.data
        this.setData({info})
      }
    })
  },
  onReady(res) {
    this.videoContext = wx.createVideoContext('myVideo')
  },
  onShareAppMessage: function () {
    let {postId, title} = this.data.info;
    return {
      title: title,
      path: `/pages/post/post?postId=${postId}`
    }
  }
})