ActFramework中实现文件上传
ActFramework中实现文件上传
文件上传是一种常见的web应用功能。这篇小灶讲述如何在ActFramework中实现文件上传，包括单文件上传和多文件上传两种情况。
首先我们定义一个Model类Document用于演示单文件上传的情况：
public class Document implements SimpleBean {
public String desc;
public String subject;
public File attachment;
public Document(String subject, String desc, File attachment) {
this.desc = desc;
this.subject = subject;
this.attachment = attachment;
}
}下面是处理单文件上传的请求响应函数：
@PostAction("/single")
public Document handleSingleFile(File file, String subject, String desc) {
return new Document(subject, desc, file);
}对应单文件上传的HTML Form:
<form action="/single" method="post" enctype="multipart/form-data">
<div>
<input name="subject" placeholder="subject">
</div>
<div>
<input name="desc" placeholder="description">
</div>
<div>
<input name="file" type="file" placeholder="file">
</div>
<div>
<button type="submit">Submit</button>
</div>
</form>以上就是Act应用中处理单文件上传的一种方式。下面来看看多文件上传的处理方式。
先定义一个Model类用于演示多文件上传：
public class Archive implements SimpleBean {
public String desc;
public String subject;
public File[] attachments;
public Archive(String subject, String desc, File[] attachments) {
this.desc = desc;
this.subject = subject;
this.attachments = attachments;
}
}处理多文件上传的请求响应函数：
@PostAction("/multi")
// Note the param type `File[]` can be changed to `List<File>`
public Archive handleMultipleFiles(File[] files, String subject, String desc) {
return new Archive(subject, desc, files);
}对应的多文件上传的HTML Form：
<form action="/multi" method="post" enctype="multipart/form-data">
<div>
<input name="subject" placeholder="subject">
</div>
<div>
<input name="desc" placeholder="description">
</div>
<div>
<input name="files" type="file" placeholder="file">
</div>
<div>
<input name="files" type="file" placeholder="file">
</div>
<div>
<input name="files" type="file" placeholder="file">
</div>
<div>
<button type="submit">Submit</button>
</div>
</form>完整的源代码保存在码云上
ActFramework: https://www.oschina.net/p/actframework
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