文件上传(记得关闭流)

form：

<basic name="smwd" label="导入" widget="FileUploader" referWidgets="param">    <value name="destform">fwglAdd</value>    <value name="action">upload</value>    <value name="fileTypes">*.doc;*.docx</value>    <value name="fileAmount">1</value></basic>

action：

try {    Map<String, File> l = (Map) bus.getValue("smwd");    if (l == null || l.isEmpty())        return;    for (String key : l.keySet()) {

System.out.println(" file name is: " + l.keySet());

File file = (File) l.get(key);        FileInputStream in = new FileInputStream(file);        String guid = java.util.UUID.randomUUID().toString().replaceAll("-", "").toUpperCase();        String d = System.getProperty("file.separator");//代表一个"/"        String path1 = String.valueOf(FileUpLoadAction.class.getResource(""));        System.out.println(path1.substring(6, path1.length()));        String os1 = System.getProperty("os.name");        if(os1.toLowerCase().startsWith("win")){//判断是不是windows操作系统            File writeFile = new File(path1.substring(6, path1.length()) + "upload" + d + guid + "_" + key);            FileOutputStream os = new FileOutputStream(writeFile);            byte[] b = new byte[1024];            int i = 0;            while ((i = in.read(b)) != -1) {                os.write(b, 0, i);            }            os.flush();//很重要            form.updateWidgetValue("path", writeFile);            form.updateWidgetValue("smwdmc", key);            in.close();//很重要            os.close();//很重要        }else{//如果是linux操作系统，路径前边要多加一个 "/"            File writeFile = new File(d+path1.substring(6, path1.length()) + "upload" + d + guid + "_" + key);            FileOutputStream os = new FileOutputStream(writeFile);            byte[] b = new byte[1024];            int i = 0;            while ((i = in.read(b)) != -1) {                os.write(b, 0, i);            }            os.flush();//很重要            form.updateWidgetValue("path", writeFile);            form.updateWidgetValue("smwdmc", key);            in.close();//很重要            os.close();//很重要        }

}

} catch (Exception e) {

e.printStackTrace();

}