//使用登記牌掃碼查詢
usequercode() {
?? ?uni.scanCode({
?? ??? ??? onlyFromCamera: true,
?? ??? ??? ??? ?success: function(res) {
?? ??? ??? ??? ??? ?wx.showLoading({
?? ??? ??? ??? ??? ??? ?title: '正在識(shí)別中....'
?? ??? ??? ??? ??? ?});
?? ??? ??? ??? ??? ?//掃描二維碼
?? ??? ??? ??? ??? ?if (res.scanType != 'QR_CODE') {
?? ??? ??? ??? ??? ??? ?uni.showToast({
?? ??? ??? ??? ??? ??? ??? ?title: '請(qǐng)掃描正確的使用登記牌二維碼',
?? ??? ??? ??? ??? ??? ??? ?duration: 2000,
?? ??? ??? ??? ??? ??? ??? ?icon: 'none'
?? ??? ??? ??? ??? ??? ?});
?? ??? ??? ??? ??? ??? ?return;
?? ??? ??? ??? ??? ?}
?? ??? ??? ??? ??? ?//未攜帶需要的參數(shù)
?? ??? ??? ??? ??? ?else if (res.result.indexOf('applyId') < 0 || res.result.indexOf('applyType') < 0) {
?? ??? ??? ??? ??? ??? ?uni.showToast({
?? ??? ??? ??? ??? ??? ??? ?title: '解析二維碼中存在非法參數(shù)',
?? ??? ??? ??? ??? ??? ??? ?duration: 2000,
?? ??? ??? ??? ??? ??? ??? ?icon: 'none'
?? ??? ??? ??? ??? ??? ?});
?? ??? ??? ??? ??? ??? ?return;
?? ??? ??? ??? ??? ?}
?? ??? ??? ??? ??? ?console.log('條碼類型：' + res.scanType);
?? ??? ??? ??? ??? ?console.log('條碼內(nèi)容：' + res.result);
?? ??? ??? ??? ??? ?//再文件下載后的用處
?? ??? ??? ??? ??? ?const result = res.result;
?? ??? ??? ??? ??? ?const applyid = result.substring(result.lastIndexOf('=') + 1); //獲取到條碼內(nèi)容，獲取參數(shù)訪問接口
?? ??? ??? ??? ??? ?const applytype = result.substring(result.indexOf('=') + 1, result.indexOf('&'));
?? ??? ??? ??? ??? ?console.log(applyid);
?? ??? ??? ??? ??? ?console.log(applytype);

?? ??? ??? ??? ??? ?//讀取本地文件
?? ??? ??? ??? ??? ?const fs = uni.getFileSystemManager();

?? ??? ??? ??? ??? ?uni.request({
?? ??? ??? ??? ??? ??? ?url: getApp().globalData.config.url + 'enterprise/useApply/usingCodeUpload',
?? ??? ??? ??? ??? ??? ?method: 'POST',
?? ??? ??? ??? ??? ??? ?headers: { isToken: false },
?? ??? ??? ??? ??? ??? ?data: { applyId: applyid, applyType: applytype },
?? ??? ??? ??? ??? ??? ?responseType: 'arraybuffer', //此處是請(qǐng)求文件流，必須帶入的屬性
?? ??? ??? ??? ??? ??? ?success: res => {
?? ??? ??? ??? ??? ??? ??? ?console.log(res);
?? ??? ??? ??? ??? ??? ??? ?var data = res.data;
?? ??? ??? ??? ??? ??? ??? ?//將接口返回的二進(jìn)制數(shù)據(jù)轉(zhuǎn)成pdf文件
?? ??? ??? ??? ??? ??? ??? ?//uni.getFileSystemManager()
?? ??? ??? ??? ??? ??? ??? ?wx.getFileSystemManager().writeFile({
?? ??? ??? ??? ??? ??? ??? ??? ?// 寫文件
?? ??? ??? ??? ??? ??? ??? ??? ?filePath: wx.env.USER_DATA_PATH + '/使用登記牌.pdf', // wx.env.USER_DATA_PATH 指定臨時(shí)文件存入的路徑，后面字符串自定義
?? ??? ??? ??? ??? ??? ??? ??? ?data: data,
?? ??? ??? ??? ??? ??? ??? ??? ?encoding: 'binary', //二進(jìn)制流文件必須是 binary
?? ??? ??? ??? ??? ??? ??? ??? ?success(res) {
?? ??? ??? ??? ??? ??? ??? ??? ??? ?wx.openDocument({
?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ?// 新開頁面打開文檔
?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ?filePath: wx.env.USER_DATA_PATH + '/使用登記牌.pdf', //拿上面存入的文件路徑
?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ?success: function(res) {
?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ?console.log(res);
?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ?setTimeout(() => {
?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ?wx.hideLoading();
?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ?}, 500);
?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ???//查看后刪除本地用戶文件
?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ???//wx.getFileSystemManager().unlink({
?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ???// 寫文件
?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ???//filePath: wx.env.USER_DATA_PATH + '/使用登記牌.pdf', // wx.env.USER_DATA_PATH 指定臨時(shí)文件存入的路徑，后面字符串自定義

?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??//success(res) {
?? ??? ??? ??? ??? ??? ??? ??? ??? ???  ?//console.log(res);
?? ??? ??? ??? ??? ??? ??? ??? ???//}
?? ??? ??? ??? ??? ??? ??? ?? ?//});
?? ??? ??? ??? ??? ??? ??? ?}
?? ??? ??? ??? ??? ??? ??? ??});
?? ??? ??? ??? ??? ??? ?? ?},
?? ??? ??? ??? ??? ??error(error) {
?? ??? ??? ??? ?console.log(error);
?? ??? ??? ??? ??? ? ?}
?? ??? ??? ??? ????});
?? ??? ??? ??? ?}
?? ??? ???  ?});
?? ??? ???}
?? ??});
},

三、實(shí)現(xiàn)效果圖

總結(jié)

我本來想打開后刪除的，再真機(jī)調(diào)試下沒問題，但發(fā)布在手機(jī)上提示預(yù)覽失敗，請(qǐng)?jiān)谄渌麘?yīng)用打開，刪除寫在compltet也一樣，后面考慮到服務(wù)器資源內(nèi)存資源比存儲(chǔ)性能高，由放在服務(wù)器上了pdf。

以上就是本文的全部內(nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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