AzureMobileService：在表给出了异常插入数据出了、异常、数据、AzureMobileService

2023-09-07 00:12:03 作者：咸鱼

我是新来的Azure实现移动服务。我指的演示内的TodoItem 通过Azure中给出。

I am new to implement Azure Mobile Service. I have refer the demo of ToDoItem given by Azure.

在相同的方式，我有使类的用户自己的应用程序。然后我在插入数据到MobileServiceTable，但它给了我错误象下面这样：

In same manner i have make class User for my own app. Then I am inserting the data in to the MobileServiceTable but it gives me error like below:

{"message":"The operation failed with the following error: 'A null store-generated value was returned for a non-nullable member 'CreatedAt' of type 'CrazyLabApp.Models.User'.'."}

我还没有创建任何这样的领域，因为它不是在内的TodoItem示范创建。我看到，有4场是由MobileServiceTable创建默认。 createdAt是该字段中的一个。

I have not created any field like this as it is not created in ToDoItem demo as well. I have seen that there are 4 fields that are by Default created by the MobileServiceTable. createdAt is one of the field of that.

我想知道什么是错我在做什么。

I am wonder about whats wrong i am doing.

检查下面UserClass的我：

Check my below Userclass:

   public class User {
    @com.google.gson.annotations.SerializedName("id")
    private String ServiceUserId;

    @com.google.gson.annotations.SerializedName("email")
    private String Email;

    @com.google.gson.annotations.SerializedName("firstname")
    private String FirstName;

    @com.google.gson.annotations.SerializedName("lastname")
    private String LastName;

    @com.google.gson.annotations.SerializedName("profilepic")
    private String ProfilePic;

    @com.google.gson.annotations.SerializedName("introduction")
    private String Introduction;

    @com.google.gson.annotations.SerializedName("website")
    private String Website;

    @com.google.gson.annotations.SerializedName("title")
    private String Title;

    @com.google.gson.annotations.SerializedName("_createdAt")
    private Date CreatedAt;

    @com.google.gson.annotations.SerializedName("coverimage")
    private ArrayList<CoverImage> CoverImages;

    /*public Date getCreatedAt() {
        return CreatedAt;
    }

    public void setCreatedAt(Date createdAt) {
        CreatedAt = createdAt;
    }*/

    @com.google.gson.annotations.SerializedName("followers")
    private ArrayList<User> Followers;

    @com.google.gson.annotations.SerializedName("likes")
    private ArrayList<Likes> Likes;

    @com.google.gson.annotations.SerializedName("collections")
    private ArrayList<Collections> Collections;

    @com.google.gson.annotations.SerializedName("comments")
    private ArrayList<Comments> Comments;

    @com.google.gson.annotations.SerializedName("stories")
    private ArrayList<Story> Stories ;




    //-------------- Methods
    public ArrayList<Story> getStories() {
        return Stories;
    }

    public void setStories(ArrayList<Story> stories) {
        Stories = stories;
    }

    public ArrayList<com.promact.crazylab.model.Comments> getComments() {
        return Comments;
    }

    public void setComments(ArrayList<com.promact.crazylab.model.Comments> comments) {
        Comments = comments;
    }

    public ArrayList<com.promact.crazylab.model.Collections> getCollections() {
        return Collections;
    }

    public void setCollections(ArrayList<com.promact.crazylab.model.Collections> collections) {
        Collections = collections;
    }

    public ArrayList<com.promact.crazylab.model.Likes> getLikes() {
        return Likes;
    }

    public void setLikes(ArrayList<com.promact.crazylab.model.Likes> likes) {
        Likes = likes;
    }

    public ArrayList<User> getFollowers() {
        return Followers;
    }

    public void setFollowers(ArrayList<User> followers) {
        Followers = followers;
    }

    public ArrayList<CoverImage> getCoverImages() {
        return CoverImages;
    }

    public void setCoverImages(ArrayList<CoverImage> coverImages) {
        CoverImages = coverImages;
    }

    public String getTitle() {
        return Title;
    }

    public void setTitle(String title) {
        Title = title;
    }

    public String getWebsite() {
        return Website;
    }

    public void setWebsite(String website) {
        Website = website;
    }

    public String getIntroduction() {
        return Introduction;
    }

    public void setIntroduction(String introduction) {
        Introduction = introduction;
    }

    public String getLastName() {
        return LastName;
    }

    public void setLastName(String lastName) {
        LastName = lastName;
    }

    public String getProfilePic() {
        return ProfilePic;
    }

    public void setProfilePic(String profilePic) {
        ProfilePic = profilePic;
    }

    public String getEmail() {
        return Email;
    }

    public void setEmail(String email) {
        Email = email;
    }

    public String getFirstName() {
        return FirstName;
    }

    public void setFirstName(String firstName) {
        FirstName = firstName;
    }

    public String getServiceUserId() {
        return ServiceUserId;
    }

    public void setServiceUserId(String serviceUserId) {
        ServiceUserId = serviceUserId;
    }

    @Override
    public boolean equals(Object o) {
        return o instanceof User && ((User) o).ServiceUserId == ServiceUserId;
    }

}

另外，请检查下面code我正在插入的方式：

Also check below code the way i am inserting it:

final User u = new User();
u.setFirstName(mName);
u.setEmail(mEmail);
u.setProfilePic(mUrl);

mUserTable = mClient.getTable(User.class);

             // Insert the new item
             new AsyncTask<Void, Void, Void>(){
             @Override
             protected Void doInBackground(Void... params) {
                    try {
                           final User entity = mUserTable.insert(u).get();

                     } catch (Exception e){
                        //createAndShowDialog(e, "Error");
                        System.out.println("Error: "+e.toString());

                     }
             return null;
             }
     }.execute();

请帮我在这。

AzureMobileService：在表给出了异常插入数据出了、异常、数据、AzureMobileService

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