版权声明:本文为博主原创文章,未经博主允许不得转载。 https://blog.csdn.net/lnazj/article/details/82934226
1 后台查询等级和该等级下的项目
Map<Integer,List<TrainingModel>> trainingMap=new HashMap<>();
//查询所有项目
List<TrainingModel> trainingLevel=trainingProgramDao.queryAllLevel();
for(TrainingModel trainingModel:trainingLevel){
if(trainingMap.containsKey(trainingModel.getLevelOrder())){
trainingMap.get(trainingModel.getLevelOrder()).add(trainingModel);
}else {
List<TrainingModel> trainingModels = new ArrayList<>();
trainingModels.add(trainingModel);
trainingMap.put(trainingModel.getLevelOrder(),trainingModels);
}
}
return trainingMap;
2.前台获得等级
let url='http://192.168.22.126/second-training-web/trainingProgram/queryPrograms';
this.http.get(url).subscribe(
res=>{
//console.log(res.json())
this.programs=res.json()
for(var k in this.programs){
this.levelOrder.push(k);
}
},
error=>{
console.log(error);
}
)
获得等级所有项目,获得value值
this.program =this.programs[item];