extjs4,spring mvc3上传文件

本文讲解下extjs4结合spring mvc3的注解完成上传文件的例子。

1 页面文件

<link rel="stylesheet" type="text/css" href="/extjs4-file-upload-spring/extjs/resources/css/ext-all.css" />
<script type="text/javascript" src="/extjs4-file-upload-spring/extjs/bootstrap.js"></script>

<script src="/extjs4-file-upload-spring/js/file-upload.js"></script>

</head>
<body>

Click on "Browse" button (image) to select a file and click on Upload button

2 EXTjs的文件
Ext.onReady(function(){

    Ext.create('Ext.form.Panel', {
        title: 'File Uploader',
        width: 400,
        bodyPadding: 10,
        frame: true,
        renderTo: 'fi-form',
        items: [{
            xtype: 'filefield',
            name: 'file',
            fieldLabel: 'File',
            labelWidth: 50,
            msgTarget: 'side',
            allowBlank: false,
            anchor: '100%',
            buttonText: 'Select a File...'
        }],

        buttons: [{
            text: 'Upload',
            handler: function() {
                var form = this.up('form').getForm();
                if(form.isValid()){
                    form.submit({
                        url: 'upload.action',
                        waitMsg: 'Uploading your file...',
                        success: function(fp, o) {
                            Ext.Msg.alert('Success', 'Your file has been uploaded.');
                        }
                    });
                }
            }
        }]
    });

});

3 上传文件的bean

Java代码
import org.springframework.web.multipart.commons.CommonsMultipartFile;

public class FileUploadBean {

    private CommonsMultipartFile file;

    public CommonsMultipartFile getFile() {
        return file;
    }

    public void setFile(CommonsMultipartFile file) {
        this.file = file;
    }
}

4 为了让extjs显示信息，再设计一个bean
Java代码
public class ExtJSFormResult {

    private boolean success;

    public boolean isSuccess() {
        return success;
    }
    public void setSuccess(boolean success) {
        this.success = success;
    }

    public String toString(){
        return "{success:"+this.success+"}";
    }
}

这里其实是返回是否成功

5 controller层

Java代码
@Controller
@RequestMapping(value = "/upload.action")
public class FileUploadController {

    @RequestMapping(method = RequestMethod.POST)
    public @ResponseBody String create(FileUploadBean uploadItem, BindingResult result){

        ExtJSFormResult extjsFormResult = new ExtJSFormResult();

        if (result.hasErrors()){
            for(ObjectError error : result.getAllErrors()){
                System.err.println("Error: " + error.getCode() + " - " + error.getDefaultMessage());
            }

            //set extjs return - error
            extjsFormResult.setSuccess(false);

            return extjsFormResult.toString();
        }

        // Some type of file processing...
        System.err.println("-------------------------------------------");
        System.err.println("Test upload: " + uploadItem.getFile().getOriginalFilename());
        System.err.println("--------------

补充：软件开发 , Java ,