PlayFramework完整实现一个APP（九）

1.开启CRUD Module

在/conf/application.conf 中添加

# Import the crud modulemodule.crud=${play.path}/modules/crud

在/conf/routes 中添加

# Import CRUD routes* /admin module:crud

需要重启Server，导入CRUD Module

2.添加控制器

/app/controllers

import play.*;import play.mvc.*; public class Posts extends CRUD { }public class Tags extends CRUD { }public class Users extends CRUD { }public class Comments extends CRUD { }

可能会提示错误： CRUD 无法解析为类型 并且运行程序会提示错误

解决办法：

修改 conf/dependencies.yml

require: - play - play -> crud

运行Shell

工程下会生成 modules/crud 文件，重新启动工程即可，但是编译还是会出错，可能是没有引用crud工程的原因

3.创建Controller

package controllers;import models.User;@CRUD.For(User.class)public class AdminUsers extends CRUD {}

4.修改Model，添加验证

以User为例

public class User extends Model { @Email @Required public String email; @Required @PassWord public String password; public String fullname; public String isAdmin; public String toString() { return email; }}

进入http://localhost:9000/admin/ 选择add user进入 User Form进行测试

public class Post extends Model { @Required public String title; @Required public Date postedAt; @Lob @Required @MaxSize(10000) public String content; @Required @ManyToOne public User author; @OneToMany(mappedBy = "post", cascade = CascadeType.ALL) public List<Comment> comments; @ManyToMany(cascade = CascadeType.PERSIST) public Set<Tag> tags;}

public class Tag extends Model implements Comparable<Tag> { @Required public String name;}

public class Comment extends Model { @Required public String author; @Required public Date postedAt; @Lob @Required @MaxSize(10000) public String content; @ManyToOne @Required public Post post;}

5.页面上显示的Label名字是小写，与对应类的字段名一致，如果想显示大写，可以修改/conf/messages

title=Titlecontent=ContentpostedAt=Posted atauthor=Authorpost=Related posttags=Tags setname=Common nameemail=Emailpassword=Passwordfullname=Full nameisAdmin=User is admin

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