SpringMvc的传递参数方式

1. @requestMapping: 类级别和方法级别的注解, 指明先后台解析的路径。 有value属性(一个参数时默认)指定url路径解析,method属性指定提交方式(默认为get提交) java

  @RequestMapping (value =  "/testing" )
  public  class  QuestionSetDisplayController  extends  BaseController {}
  @RequestMapping (value =  "/applicant/recover" )
   public  BaseModel recover(String cellphone)  throws  OTPException {
       return  userService.recover(cellphone);
   }

2. @RequestParam: 请求参数规则注解。 value属性匹配前台传递的参数(一个参数时默认),required属性此字段是否必须传值(boolean,默认为true),defaultValue此参数的默认值(存在此参数时,说明前台没必要需传递参数,required为false) app

  @RequestMapping("/login")  //url: /login?name=tom编辑器

    public  String login( @RequestParam (value= "age" ,required= false ,defaultValue= "24" ) String agenum, @RequestParam ( "name" ) String name){
        return  "hello" ;
    }

3.  @PathVariable: url参数注解, 通常用于从url中获取参数post

@RequestMapping (value =  "/system/getAllCodeTableData/{category}" , method = RequestMethod.GET) 
//前台url: '/system/getAllCodeTableData/APPLICANT_ENGLISH'
  public  List<CodeTableModel> getCodeTableModelByCategory( @PathVariable  String category)  throws  OTPException {<br>      return  codeTableService.getCodeTableModelByCategory(category); <br>}

4. 特殊的 属性编辑器 在前台到后台data日期类型等的转化会出错,此时咱们须要属性编辑器进行属性的转化 //日期传递参数会产生异常,所以在传递时间参数时,须要进行类型转换,在初始化时进行数据的绑定与转化ui

 @RequestMapping(value="/todate/{data}",method=RequestMethod.GET)url

     public  String todate( @PathVariable ( "data" ) Date date){
         System.out.println( new  SimpleDateFormat( "yyyy-MM-dd" ).format(date));
         return  "start" ;
     }
     @InitBinder     //初始化参数绑定, 日期类型的转化,
     public  void  initBinder(ServletRequestDataBinder binder){
         binder.registerCustomEditor(java.util.Date. class new  CustomDateEditor( new  SimpleDateFormat( "yyyy-MM-dd" ), true ));
     }

 

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关于前台angular使用get/post传递参数, 后台接收code

get方式传参orm

$scope.getFlows = function(key) {对象

             $scope.flows = Flow.search({type:key})  // 参数以{key: value, ...}传递
         }
 
@GetMapping( "" )
     @ResponseBody
     public  List<DefinitionDTO> query(
             @RequestParam(value= "type" ) String type) throws Exception {
         // 后台以requestparam来获取参数
         if  (!type. equals ( "all" )) {
             return  activitiService.findByKey(type);
         }
         return  activitiService.findAll();
     }

post传参

$scope.batchDelete = function() {

             $scope.selectedVehicles = getSelected();
             if  (angular.isDefined($scope.selectedVehicles) && $scope.selectedVehicles.length > 0) {
                 var  vehicle = {ids: $scope.selectedVehicles};  //前台封装成对象
                 VehicleInfo.batchDelete(vehicle, function(response) {
                     toPage(1, $scope.pageInfos.size,  null );
                 });
             }
         }
 
 
@PostMapping( "/batchDelete" )
     @ResponseBody   //后台以requestbody注解来获取请求对象参数
     public  void  batchDelete(@RequestBody VehicleDTO vehicle) throws Exception {
         for  (Long id : vehicle.getIds()) {
             vehicleService.deleteVehicle(id, Boolean.TRUE);
         }
     }
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