'处理附件预览与下载的兼容性'

pages/details/details.js

@@ -18,7 +18,9 @@ Page({
     content: "",
     aid: 0,
     isDow: false,
-        ext_download_link: ""
+    ext_download_link: "",
+    ext_dow_ext: "",
+    dowBtnTxt: "下载附件",
   },
 
   /**
@@ -55,31 +57,89 @@ Page({
       url: "/api.php/doc/details?id=" + that.data.aid
     }).then(res => {
       if (res.data.code === 1) {
-
         that.setData({
           title: res.data.data.title,
           date: res.data.data.date,
           content: res.data.data.content,
           ext_download_link: res.data.data.ext_download_link,
+          ext_dow_ext: res.data.data.ext_dow_ext,
         })
         if (res.data.data.ext_download_link.length > 0) {
           that.setData({
             isDow: true
           })
+          let dowBtnTxt = ""
+          let ext_dow_ext = res.data.data.ext_dow_ext
+          if (ext_dow_ext === "pdf" || ext_dow_ext === "doc" || ext_dow_ext === "docx") {
+            dowBtnTxt = "下载附件"
+          } else {
+            dowBtnTxt = "复制下载地址去浏览器下载附件"
+          }
+          that.setData({
+            dowBtnTxt: dowBtnTxt
+          })
         }
         that.initContent()
       }
     }).catch(err => {
-            console.log('ERROR')
+      console.log('ERROR', err)
     });
   },
 
 
   downloadFileOpen() {
     let that = this;
-        let link = that.data.ext_download_link
+    let ext_download_link = that.data.ext_download_link
+    let ext_dow_ext = that.data.ext_dow_ext
+
+    if (ext_dow_ext === "pdf" || ext_dow_ext === "doc" || ext_dow_ext === "docx") {
+      ui.showLoading('加载中...');
+      wx.downloadFile({
+        url: ext_download_link,
+        success: function (res) {
+          console.log(res, "wx.downloadFile success res")
+          if (res.statusCode != 200) {
+            ui.hideLoading()
+            ui.showToast("预览文件失败")
+            return false
+          }
+          var Path = res.tempFilePath //返回的文件临时地址，用于后面打开本地预览所用
+          wx.openDocument({
+            filePath: Path,
+            showMenu: true,
+            success: function (res) {
+              console.log('打开成功');
+              util.hideLoading()
+            }
+          })
+        },
+        fail: function (err) {
+          console.log(err, "wx.downloadFile fail err");
+          ui.hideLoading()
+          ui.showToast("预览文件失败")
+        }
+      })
+
+
+
+      // wx.downloadFile({
+      //   url: ext_download_link,
+      //   success(res) {
+      //     if (res.statusCode === 200) {
+      //       const filePath = res.tempFilePath
+      //       wx.openDocument({
+      //         filePath: filePath,
+      //         showMenu: true, //关键点
+      //         success: function (res) {
+      //           console.log('打开文档成功')
+      //         }
+      //       })
+      //     }
+      //   }
+      // })
+    } else {
       wx.setClipboardData({
-            data: link,
+        data: ext_download_link,
         success: function (res) {
           wx.getClipboardData({
             success: function (res) {
@@ -90,46 +150,7 @@ Page({
           })
         }
       })
-
+    }
-
-
-
-        //复制到剪切板
-        // wx.setClipboardData({
-        //     data: link,
-        //     success(res) {
-        //         console.log('copy success');
-        //         //获取剪切板的纸
-        //         // wx.getClipboardData({
-        //         //     success(res) {
-        //         //         console.log(res) // data
-        //         //         that.copyContent = res.data
-        //         //     }
-        //         // })
-        //     }
-        // })
-
-
-
-        // wx.showLoading({
-        //     title: '下载中',
-        // })
-        //下载文件
-        // wx.downloadFile({
-        //   url: link,
-        //   success (res) {
-        //     if (res.statusCode === 200) {
-        //         const filePath = res.tempFilePath
-        //         wx.openDocument({
-        //           filePath: filePath,
-        //           showMenu:true, //关键点
-        //           success: function (res) {
-        //             console.log('打开文档成功')
-        //           }
-        //         })
-        //     }
-        //   }
-        // })
   },
 
 

pages/details/details.wxml

@@ -20,5 +20,5 @@
     </view>
 </scroll-view>
 <view class='btn-view'  wx:if="{{isDow}}">
-    <button bind:tap="downloadFileOpen" style="background: #3c8bf6;;border-radius: 60rpx;width: 85%;color: #fff;font-size: 30rpx;font-weight: normal;">附件下载</button>
+    <button bind:tap="downloadFileOpen" style="background: #3c8bf6;;border-radius: 60rpx;width: 85%;color: #fff;font-size: 30rpx;font-weight: normal;">{{dowBtnTxt}}</button>
 </view>