Question

我正在尝试使用Grails构建简单的CRUD应用程序。我对这个框架非常陌生。我的CRUD表有很少的属性，连接到本地数据库，它工作得很好，除了它不能加载图片。我收到错误，表明它的类型不匹配。怎么解决？

我的控制器类如下：

class Person 
{
    int id
    String name
    String address
    byte[] profilePic
}

static constraints 
{
    profilePic maxSize :204800
}

static mapping 
{
    table 'all_users'
    version false
    columns 
    {
        id column: 'id'
        name column: 'name'
        address column: 'address'
        profilePic column: 'profilepic'
    }
}

Answer 1

域代码

class Person 
{
    int id
    String name
    String address
    String profilePic
}

static mapping 
{
    table 'all_users'
    version false
    columns 
    {
        id column: 'id'
        name column: 'name'
        address column: 'address'
        profilePic column: 'profilepic'
    }
}

控制器代码

def save(){
        def person = new Person(params)
        person.save flush: true, failOnError: true
        redirect action: "show", id: person.id
        def downloadedfile= request.getFile('profilePic')
        String profilePic = "D:/Your Grails Applications/grails-app/assets/images/" + person.name + ".jpg"
        downloadedfile.transferTo(new File(profilePic))
    }

查看代码

<input type="file" name="profilePic"/>

Answer 2

看看http://docs.grails.org/latest/guide/single.html#uploadingFiles和How to store a file in the database with Grails

属性xxx是类型不匹配的

2 个答案: