1. @requestMapping: 类级别和方法级别的注解, 指明前后台解析的路径。 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)
@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,说明前台不必需传递参数,required为false)
@RequestMapping``(``"/login"``) //url: /login?name=tom
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, 一般用于从url中获取参数
@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,此时我们需要属性编辑器进行属性的转化 //日期传递参数会产生异常,因此在传递时间参数时,需要进行类型转换,在初始化时进行数据的绑定与转化
@RequestMapping``(value=``"/todate/{data}"``,method=RequestMethod.GET)
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
get方式传参
$scope.getFlows = function(key) {
$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);
}
}
