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技术 2022年11月15日
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为期半个月的项目实践开发,已完整告一段落,团队小组获得第一名,辛苦总算没有白费,想起有一天晚上,整个小组的人,联调到12点才从公司回去,真是心酸。这里总结一下,项目过程中遇到的问题

和感悟。哈哈,放张集体照。嘿嘿,项目所有的不同的team的小伙伴,一群优秀的小伙伴(大多都来自高校211,985)么么哒.下面介绍下我们组的产品和问题。

项目已放在github上:https://github.com/foreverjiangting/myApp/tree/master/myApp/myApp

一:项目效果展示

先展示一下我们做的产品,主要是做一个投票的APP,包括用户登录,注册,答卷,查看答卷详情,排行榜等功能。后台可创建问卷,分发问卷,增加单选题和多选题,创建问卷题目,我这边前端的app将其显

示出来。基本上可以满足需求,但还有很多不完善的地方。

          

二:制作功能问题总结

先看下核心功能,用户进行单选,多选后,将保存用户的答案,传递后后端,然后在展示详情里面将用户的答案进行展示出来。这里先贴下代码。

1234567891011121314151617 <ion-slide-box show-pager="false"  on-slide-changed="onSlideChanged(index)" active-slide="currentIndex">            <ion-slide  class="set-container" ng-repeat="value in  objData"  repeat-done="repeatDone()" >                <div class="swiper-slide swiper-slide-duplicate swiper-slide-active"  style="width: 349px; margin-right: 30px;">                    <div class="scores" >                        <h3>{{data.title}}</h3>                        <div class="f"><span id="span-text">{{$index+1}}</span>{{value.title}}</div>                        <div class="choose">                            <div class="input" ng-repeat="(key,value2) in value.items">                               <label for="26">                                  <input type="radio" name="radio{{$parent.$index}}" class="radio"  value="{{key}}" ng-model= "selectedValue.radioData[$parent.$index]">                                  <span >{{value2}}</span>                               </label>                            </div>                                                                               </div>                    </div>                </div></ion-slide>

这里有几个问题,由于是公用同一个模板,每一个ion-slide就是一页,且一页下面有多个选项。问题如下:

1.如何区分不同个ion-slide下的radio ?贴下代码,只要给name添加就可以。parent.parent.index即可

1 <input type="radio" name="radio{{$parent.$index}}" class="radio"

2.如何获取用户选择的当前页的答案?使用ng-model即可,将用户选择的答案分别存在一个数组里面。

1 ng-model= "selectedValue.radioData[$parent.$index]">

  基本上也没啥难点,就是方法要知道。用户填写答案完成后,进行保存,我们需要获取用户提交的所有答案。看下代码。

123456789101112131415161718192021222324252627282930313233343536373839404142434445 $scope.submitData = {};   //用户提交完毕,当前的问卷被提交,修改其状态为已完成。可在已完成的栏目进行查看   $scope.submitSuccess = function(){              var radioJsonData = $scope.selectedValue.radioData;       var radioObject  = [];       for(var k  in radioJsonData){            radioObject.push(radioJsonData[k]);       }       console.log('3333')       console.log(radioObject);       console.log(radioJsonData)       //获取radioData的长度,判断用户选择的数据是否完整       var radioLength = 0;       var getRadioLength = function(radioJsonData){           for(var item  in radioJsonData){               radioLength++;           }           return  radioLength;       }       if(getRadioLength(radioJsonData) == $scope.serveLength-1){             var submitData = window._single = {                 "single":radioObject                        };             var submitId  = window._id = {                  "id" : $stateParams.timuId             }              console.log(JSON.stringify(submitData));              var alertPopup = $ionicPopup.alert({                  title: '保存成功',                  template: '您的单选题已完成,请继续答题!'              });              alertPopup.then(function(res) {                  history.go(-1);              });       else{           var alertPopup = $ionicPopup.alert({               title: '提交失败',               template: '您的问卷未完成,请返回查看详情!'           });           alertPopup.then(function(res) {              console.log('提交失败');           });       }        };

3.再来看下多选题,跟单选题有点区别。

12345678910111213141516171819 <ion-slide-box show-pager="false"  on-slide-changed="onSlideChanged(index)" active-slide="currentIndex">           <ion-slide  class="set-container" ng-repeat="value in  objData"  repeat-done="repeatDone()" >               <div class="swiper-slide swiper-slide-duplicate swiper-slide-active"  style="width: 349px; margin-right: 30px;">                   <div class="scores">                       <h3>{{data.title}}</h3>                       <div class="f"><span id="span-text">{{$index+1}}</span>{{value.title}}</div>                       <div class="choose" >                           <div class="input" ng-repeat="(key,value2) in value.items">                              <label for="26">                                 <input type="checkbox" name="radio{{$parent.$index}}" class="radio"                                  ng-model = "selected[$parent.$index][$index]"                                >                                 <span  style="margin-left: 30px;">{{value2}}</span>                              </label>                           </div>                                                                              </div>                   </div>               </div>                      </ion-slide>

 问题如下:

1.如何在多选里面选中多个答案呢?

1 ng-model = "selected[$parent.$index][$index]"

这种方法是最简单的,虽然不是我们要的,但之后再做一下解析即可。数组里面的数据是这样子的。因为我们只需要保存用户选择的答案的当前题目的index,保存以1,2,3,4的形式保存即可。

         

看下解析的代码如下:

12345678910111213141516171819202122232425262728 $scope.nextSlide = function(){       var  slideIndex = $ionicSlideBoxDelegate.currentIndex();             $scope.connectedData = $scope.selected.map(function(item){           var connectSelected = [];           for(var in item){             if(item[i]){               connectSelected.push(parseInt(i)+1);             }           }           return connectSelected.join('/');     //进行解析,以/进行分割       })        if( $scope.connectedData == null){            var alertPopup = $ionicPopup.alert({                template: '您还没有选择,请选择答案!'           });       }else if( $scope.connectedData[slideIndex] == null && slideIndex != $scope.serveLength-1 ){           var alertPopup = $ionicPopup.alert({                template: '您还没有选择,请选择答案!'           });            return true;                 }else {           $ionicSlideBoxDelegate.next();       }         return ;            console.log('test:'+JSON.stringify( $scope.connectedData));       //$ionicSlideBoxDelegate.next();                       };

3.既然单选题和多选题都有答案了,现在就是提交用户答案了。解决不同controller之间的数据通信,本来之前用的$rootscope,不知道为什么不行,后来学霸告诉我直接

存在window下面。于是简单粗暴的解决了问题。

         

先看下代码吧,我们前端需要提交给后端数据包括问卷的ID,单选题答案,多选题答案。下面是提交的代码。

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778 .controller('chooseCtrl',['$scope','$ionicPopup''$timeout''$stateParams','$http','$ionicScrollDelegate','$location' ,function($scope,$ionicPopup, $timeout, $stateParams,$http,$ionicScrollDelegate,$location){    $scope.jump = function(url){          window.location = url;    }      $scope.chooseId = $stateParams.timuId; //获取问卷的Id      console.log( $scope.chooseId);      var submitData = {           "id" : $scope.chooseId      }      var objData = [];      //刚开始渲染数据,获取整个问卷的data,单选存在一个数组,多选存在一个数组    $http({            // url : "../data/api.json",            url : "http://10.32.33.4:8080/ivotel-management/questionnaire/selectQuestionnaireDetail",            method : "get",            params: submitData,            headers: { 'Content-Type''application/json;charset=UTF-8' }    }).success(function(data) {                    var arr =data.questionnaireQuestionList; //进行解析                     var singleData = [] ;            var mutilData = [];            for(var i=0;i<arr.length;i++){                  objData[i] = arr[i].responseQuestion;            }           // console.log(JSON.stringify(objData));  //获取所有的题目对象            for(var i  in  objData){                   if(objData[i].questiontype == 1){                        singleData.push(objData[i]);                   }else if(objData[i].questiontype == 2){                        mutilData.push(objData[i]);                   }            }            window._singleData = singleData;            window._singleData_length = singleData.length;            window._mutilData  = mutilData;            window._mutilData_length = mutilData.length;            window.totalQuestionData = data ;            //console.log(JSON.stringify(singleData));            //console.log(JSON.stringify(mutilData));                $scope.data = data;            $scope.serveData = data.questionnaireQuestionList[0].qqid;        }).error(function(){             console.log('error');    });         //用户填写完成后,将用户答案保存,并一起传递给后端    $scope.submit = function(){          if(window._multi == null){              window._multi = [];          }          var  submitTotalData = [                window._id ,                window._single ,                window._multi          ] ;             $http({                   url : "http://10.32.33.4:8080/ivotel-examuser/questionnairePapers/Submit"                  method : "post",                  data : submitTotalData,                  headers: { 'Content-Type''application/json;charset=UTF-8' },                  withCredentials :true              }).success(function(data) {                  console.log('success');              }).error(function(){                   console.log('error');              });                var alertPopup = $ionicPopup.alert({                   title: '提交成功',                   template: '您的问卷已完成,请返回查看详情!'               });                alertPopup.then(function(res) {                   history.go(-1);              });                           console.log('test: ' + JSON.stringify( submitTotalData));            } }])

输出时用户提交的所有答案格式如下:

将不同的controller里面的值,分别存在window下面的某一个属性下面,即可在全局中进行使用。

  

4.OK ,既然答案都已经保存好啦,现在,我们需要将答案展示出来。在详情页面列表中。

看下后端传给我们的数据格式如下:

123456789101112 {    "answer": {  //单选        "1""4",  //第一题,用户选择第四个答案        "2""1",  //第二题,用户选择第一个答案        "3":"3"    //第三题,用户选择第三个答案    },    "multi": {    //多选        "4""1/2/3",  //第四题,用户选择1,2,3答案        "5""1/3/4",  //第五题,用户选择1,3,4答案        "6""1/3/4"   //第六题,用户选择1,3,4答案    }}

看下效果图,我们主要是做两件事,1.进行解析,将用户的答案,呈现出来。2.根据答案,选中用户当前的radio的状态。

       

这里直接贴下代码,解析的过程都在代码中。比较繁琐。

关于单选的话,根绝单选直接选中当前的radio,比较好说,直接使用下面的方法即可:

1234567891011121314151617 <ion-slide  class="set-container" ng-repeat="value in  singleData"  repeat-done="repeatDone()" >                <div class="swiper-slide swiper-slide-duplicate swiper-slide-active"  style="width: 349px; margin-right: 30px;">                    <div class="scores" >                        <h3>{{data.title}}</h3>                        <div class="f"><span id="span-text">{{$index+1}}</span>{{value.title}}</div>                        <div class="choose">                            <div class="input" ng-repeat="(key,value2) in value.items">                               <label for="26">                                  <input type="radio" name="radio{{$parent.$index}}" class="radio"  value="{{value2}}"                                   ng-checked="$index == selectedIndex-1">                                  <span >{{value2}}</span>                               </label>                            </div>                                                                               </div>                    </div>                </div></ion-slide>

 即直接使用下面的方法:ng-checked = “$index == selectedIndex -1″即可.

1 ng-checked="$index == selectedIndex-1">

这里解析的代码也贴一下:

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188 .controller('listItemCtrl',['$scope','$ionicPopup''$timeout''$stateParams','$http','$ionicScrollDelegate','$location' ,'$ionicSlideBoxDelegate','$ionicHistory',  function($scope,$ionicPopup, $timeout,$stateParams,$http,$ionicScrollDelegate,$location,$ionicSlideBoxDelegate,$ionicHistory){           // $ionicHistory.nextViewOptions({          //        disableBack: true          // });          $scope.repeatDone = function() {             $ionicSlideBoxDelegate.update();          };          var  objData = [];          $scope.selectedValue = {};          $scope.radioData = [];          $scope.wenjuanId = $stateParams.timuId; //获取问卷的Id          console.log('问卷Id:' + $scope.wenjuanId);          var submitData = {               "id" :  $scope.wenjuanId          }          $scope.serveData = 0;                $scope.objData = null;          $scope.jsonRadio = [];                         $scope.newJsonData = []; //根据对应的题目索引,得到正确的题目          $scope.newMulitJsonData = [];          $scope.currentIndex = 0;          $scope.answerData = null;  //所有的单选题的答案          $scope.answerMutleData = null;          $scope.jsonItemData = null;          $scope.selectedIndex = 0;          $scope.answerArray = [];          $scope.singleData = []; //所有的单选题          $scope.multiData = [];          $scope.serveLength = 0;          $scope.selectedMulitIndex = 0;          $scope.chooseMulitData = [];          $scope.single_length = 0;          $scope.muiteKey = 0;          $scope.arrData = [];          $http({                   url : "../data/doing.json",                  //url : "http://10.32.33.4:8080/ivotel-examuser/questionnairePapers/PaperDetail",                  method : "get",                  params: submitData,                  headers: { 'Content-Type''application/json;charset=UTF-8' },                  withCredentials :true          }).success(function(data) {                                      $scope.answerData = data.answer;                     console.log($scope.answerData);  //得到用户选择的答案 {1: "1", 2: "2"}                                   var arr = data.questionnaireTemp.questionnaireQuestionList; //进行解析                                           for(var i=0; i< arr.length;i++){             //获取所有的题目对象                        objData[i] = arr[i].responseQuestion;                    }                    $scope.data = data;                                                 $scope.objData = objData;                    $scope.serveLength = objData.length;                    //console.log( $scope.serveLength)                    //console.log(JSON.stringify( $scope.objData));                        for(var i  in  objData){                   //将单选题 和 多选题分别存在不同的数组里面                           if(objData[i].questiontype == 1){                                 $scope.singleData.push(objData[i]);                                 $scope.single_length =  $scope.singleData.length -1 ;                           }else if(objData[i].questiontype == 2){                                 $scope.multiData.push(objData[i]);                           }                    }                    //如果为单选的话,为 $scope.singleData                                                                            for(var i  in  $scope.answerData){   //i为key值开始                        if(i == ($ionicSlideBoxDelegate.currentIndex()+1)){                            $scope.newJsonData.push($scope.singleData[i-1].items[($scope.answerData[i])]);                        }                                                             }                    $scope.selectedIndex = parseInt($scope.answerData[$ionicSlideBoxDelegate.currentIndex()+1]) ;                    console.log('selectedIndex : ' +$scope.selectedIndex)                                    console.log('jsonNewData:' + JSON.stringify( $scope.newJsonData));                      //如果为多选的话,为$scope.multiData                    $scope.answerMutleData = data.multi;                    console.log( JSON.stringify($scope.answerMutleData));                     //对数组进行解析                    var temp = 0;                    for(var i  in $scope.answerMutleData){ //i为3                        var arr = $scope.answerMutleData[i].split('/');                        $scope.arrData = arr ;                        for (var i  in arr){                            // $scope.muiteKey = arr[i]; //获取key值,并赋值给全局变量                        }                       // $scope.muiteKey = arr[$ionicSlideBoxDelegate.currentIndex()]                        console.log('arr : ' + JSON.stringify(arr));  //[1,2,3]                        console.log('key: ' +  JSON.stringify($scope.arrData));                        for(var j=0;j < arr.length; j++){                             console.log('test: ' +temp );                             if(i == ($ionicSlideBoxDelegate.currentIndex()+1)){                                  $scope.newMulitJsonData.push($scope.multiData[temp].items[(arr[j])]);                             }                           }                        temp++;                        console.log('arrDate:' + JSON.stringify($scope.arrData));                                             console.log($scope.newMulitJsonData);                     //所有的单选全部展示完成后,开始展示所有的多选                    $scope.selectedMulitIndex = parseInt($scope.answerMutleData[$ionicSlideBoxDelegate.currentIndex()+1]) ;                    $scope.muiteKey = parseInt($scope.answerMutleData[$ionicSlideBoxDelegate.currentIndex()+1]) ;                    console.log( $scope.selectedMulitIndex);             }).error(function(){                   console.log('error');          });                 $scope.jsonItemData = [];          var osingMes = document.getElementById('singleMessage');          var omulit   = document.getElementById('muiltMessage');           $scope.onSlideChanged = function(index){              $scope.currentIndex = index;              for(var i  in $scope.answerData){                    $scope.answerArray.push($scope.answerData[i]);              }              console.log('index22:' + index);              $scope.selectedIndex = parseInt($scope.answerData[$ionicSlideBoxDelegate.currentIndex()+1])-1 ;               console.log('selectedIndex : ' +$scope.selectedIndex)                                           for(var i  in  $scope.answerData){                        if(i == ($ionicSlideBoxDelegate.currentIndex()+1)){                            $scope.newJsonData.push($scope.singleData[i-1].items[($scope.answerData[i])]);                            $scope.selectedIndex = $scope.answerData[i] - '0' ;                        }                        console.log('index:' + $scope.selectedIndex)                                     }              // if($ionicSlideBoxDelegate.currentIndex()+1 >  $scope.serveLength){              //       osingMes.style.display = 'none';              //       omulit.style.display = 'block';              // }              console.log('jsonNewData:' + JSON.stringify( $scope.newJsonData));              //如果为多选的话,为$scope.multiData                  //  $scope.answerMutleData = data.multi;                    console.log( JSON.stringify($scope.answerMutleData));                    //对数组进行解析                    var temp = 0;                    for(var i  in $scope.answerMutleData){ //i为3                       // var b =  $scope.newMulitJsonData;  //将上一次的值赋给b                        console.log('length :' + $scope.newMulitJsonData.length);                                                 var arr = $scope.answerMutleData[i].split('/');                              for(var j=0;j < arr.length; j++){                                   console.log('test: ' + temp );                                   if(i == ($ionicSlideBoxDelegate.currentIndex()+1)){                                        if($scope.newMulitJsonData[j] == null){   //判断之前的所有选项是否为空                                           $scope.newMulitJsonData.push($scope.multiData[temp].items[(arr[j])]);                                           $scope.muiteKey = $scope.multiData[temp] - '0';                                         }else{                                           $scope.newMulitJsonData = [];                                           $scope.newMulitJsonData.push($scope.multiData[temp].items[(arr[j])]);                                        }                                   }                                     console.log('json: '+ JSON.stringify($scope.newMulitJsonData));                                 }                              temp++;                                                                                                //[1,2,3]                                                                }                                      console.log(JSON.stringify($scope.newMulitJsonData));                     for(var i  in $scope.newMulitJsonData){                        console.log('i:'+ i);                    }                                                     //console.log($scope.newMulitJsonData); //得到的正确答案没问题                    //所有的单选全部展示完成后,开始展示所有的多选                    $scope.selectedMulitIndex = parseInt($scope.answerMutleData[$ionicSlideBoxDelegate.currentIndex()+1]) ;                    console.log( $scope.selectedMulitIndex);                         };           $scope.nextSlide = function(){              if($ionicSlideBoxDelegate.currentIndex()+1 !=  $scope.serveLength) {                      $ionicSlideBoxDelegate.next();               }else {                      var alertPopup = $ionicPopup.alert({                                           template: '亲,已经最后一题,木有了哦!'                      });                      alertPopup.then(function(res) {                           // window.location.reload();                           // history.go(-1);                      });              }                           };           $scope.startSlide = function(){              $ionicSlideBoxDelegate.previous();          };}])

5.前后端跨域的问题。

由于angularjs的$http请求与ajax还是有些区别的,总是会存在跨域的问题,如何解决呢?加个 withCredentials :true 即可。

1234567891011 $http({                  url : "http://10.32.33.4:8080/ivotel-examuser/questionnairePapers/Submit"                 method : "post",                 data : submitTotalData,                 headers: { 'Content-Type''application/json;charset=UTF-8' },                 withCredentials :true             }).success(function(data) {                 console.log('success');             }).error(function(){                  console.log('error');             }); <br>})  

OK,基本上整个核心的功能点都已经讲解清楚啦。问题还是遇到不少,感谢从不拒绝我问题的shu,给了我很大的帮助。嘿嘿,么么哒!

三:总结

经过这个月的项目实践,熟悉了不少ng的写法,虽然以前也接触过,但好像都不是很熟,而且一个完整的APP的搭建流程也熟悉很多。其次,想说到前后端合作的问题,定契约的问题,沟通问题

感觉一个项目下来,反正各种问题都碰到,大家一起吵啊,争啊,各有各的想法,拍桌子啊,前后端互相抱怨啊,虽然意见各有不同,哈哈哈,还是很高兴的!起码团队很有活力,很有想法,要都是

不吭声,那才恐怖,自己搞自己的,谁知道你什么想法。哈哈哈,喜欢我们的团队,一个个都棒棒的!另外呢,做项目的时候呢,要知道每个人都有自己的想法,所以,不要一昧的否认别人的想法,觉

得自己就是对的(傻逼), 学会倾听,很关键。团队获得了第一名,大家都很开心,当晚我们组大家一起去吃了海鲜自助。哈哈,放张照片!

       

还是喜欢和自己年龄相仿的人一起工作,做项目,开开玩笑,多开心。每天充满了激情和活力,沟通无代沟,都是90后,一群年轻人,多好!可是,事与愿违啊!接下来,还是得适应不同年龄段的人!


作者:婷风

出处:http://www.cnblogs.com/jtjds/p/6128539.html

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