Question

所以，我试图向本地Spring MVC项目发出POST请求，但每次尝试时，我都会收到400：Bad Request，标题中指定了错误。不知道为什么，因为当我检查发送的是什么时，它是正确的。

Spring REST控制器请求

@RequestMapping(value="/add", method = RequestMethod.POST)
void addPet(@RequestParam String name, @RequestParam String photo, @RequestParam String status) {
    Pet pet = new Pet(name, photo, status);
    this.petRepo.save(pet);
}

AngularJS请求发送数据

$http({
       method: "post",
       url: "http://localhost:8080/pet/add",
       data:{
           name: angular.element("#name")[0].value,
           photo: angular.element("#photo")[0].value,
           status: angular.element("#status")[0].value
       }
    }).success(function(data, status) {

        })
        .error(function(data, status) {
            alert("Error");
            console.log(data);
            console.log(status);
        });

调用AngularJS函数的前端HTML

<div class="form-group">
        <label for="name">Pet Name</label>
        <input type="text" class="form-control" id="name">
    </div>
    <div class="form-group">
        <label for="photo">Photo URL</label>
        <input type="text" class="form-control" id="photo">
    </div>
    <div class="form-group">
        <label for="status">Status</label>
        <input type="text" class="form-control" id="status" placeholder="Something descriptive like 'Available' or 'Taken'">
    </div>
    <div class="form-group">
        <div class="btn-group">
            <button type="button" class="btn btn-primary" ng-click="preview()">Preview</button>
            <button type="button" class="btn btn-success" ng-click="submit()">Submit</button>
            <button type="button" class="btn btn-danger" ng-click="clear()">Clear</button>
        </div>
    </div>

Answer 1

您在后端使用@RequestParam但是在角度中您将值放在请求的正文中。

您必须在后端使用@RequestBody或调整前端以将值放入url参数中。

Answer 2

试试这个

<div class="form-group">
      <label for="name">Pet Name</label>
<input type="text" class="form-control" ng-model="form.name" id="name">
   </div>
<div class="form-group">
    <label for="photo">Photo URL</label>
    <input type="text" class="form-control" ng-model="form.photo"  id="photo">
</div>
<div class="form-group">
    <label for="status">Status</label>
    <input type="text" class="form-control" ng-model="form.status"  id="status" placeholder="Something descriptive like 'Available' or 'Taken'">
</div>
<div class="form-group">
    <div class="btn-group">
        <button type="button" class="btn btn-primary" ng-click="preview()">Preview</button>
        <button type="button" class="btn btn-success" ng-click="submit(form)">Submit</button>
        <button type="button" class="btn btn-danger" ng-click="clear()">Clear</button>
    </div>
</div>

并在控制器中使用此

 $scope.form = {"name":"","photo":"","status":""}
 $http({
   method: "post",
   url: "http://localhost:8080/pet/add",
   data:{
       name: $scope.form.name,
       photo: $scope.form.photo,
       status: $scope.form.status
   }
}).success(function(data, status) {

    })
    .error(function(data, status) {
        alert("Error");
        console.log(data);
        console.log(status);
});

Answer 3

找到答案。我在前端跟上了SSH的回答，对于后端，我将功能改为：

void addPet(@RequestBody Pet pet)

Spring-Boot REST - 不存在必需的String参数

3 个答案: