struts2多文件上传
多文件上传
多文件上传和单文件上传差不多，只是有个数组接收而已：
页面：
<body>
<form action="${pageContext.request.contextPath }/file/upload.action"method="post" enctype="multipart/form-data">
请选择文件：<input type="file" name="files"/><br/>
请选择文件：<input type="file" name="files"/><br/>
请选择文件：<input type="file" name="files"/><br/>
<input type="submit" value="上传" />
</form>
</body>
配置文件中(和单文件上传是一样的)：
<constant name="struts.multipart.saveDir" value="d://"/>
<package name="file" namespace="/file"extends="struts-default">
<action name="upload" class="hwt.action.FileUploadAction">
<interceptor-ref name="fileUpload">
<param name="maximumSize">1024</param>
<param name="allowedTypes">
text/plain,application/msword
<!--image/png,image/gif,image/jpeg -->
</param>
</interceptor-ref>
<!-- 要放在后面，要不然不会起到作用 -->
<interceptor-ref name="defaultStack"/>
<!-- 还需要配置input为错误输出页面 -->
<result name="input">/fileUpload.jsp</result>
<result name="success">/downLoad.jsp</result>
<result name="failure">/fileUpload.jsp</result>
</action>
</package>
Action中
要继承ActionSupport
/
*
* ActionSupport里面提供了validate的校验功能
* 实际上继承ActionSupport之后
* 就等同于实现了很多接口Action,Validateable,ValidationAWare,TextProvider,LoacalProvider,Serializable
* 可以提供数据校验序列化国际化等功能
*/
public class FileUploadAction extends ActionSupport{
private File[] files ;
//这个名字是struts2会自动填充，但是取名必须是-属性名ContentType;
private String[] filesContentType;
//这个名字是struts2会自动填充，但是取名必须是-属性名FileName;
private String[] filesFileName;
public String execute() throws IOException{
if (files.length!=0 && files != null) {
int len = files.length;
String realPath = ServletActionContext.getServletContext().getRealPath(FileUploadUtils.baseName);
String savepath = FileUploadUtils.getSavePath(realPath);
for(int i = 0 ; i < len ; i++){
String uuidFileName = FileUploadUtils.getUUIDName(filesFileName[i]);
File descFile = new File(savepath,uuidFileName);
//这个工具类是commons.io包下面的
FileUtils.copyFile(files[i], descFile);
}
return "success";
}else {
return "failure";
}
}
public File[] getFiles() {
return files;
}
public void setFiles(File[] files) {
this.files = files;
}
public String[] getFilesContentType() {
return filesContentType;
}
public void setFilesContentType(String[] filesContentType) {
this.filesContentType = filesContentType;
}
public String[] getFilesFileName() {
return filesFileName;
}
public void setFilesFileName(String[] filesFileName) {
this.filesFileName = filesFileName;
}
//setter getter
}
工具类中：
public class FileUploadUtils {
public static String baseName;
//单利模式得到属性文件中的文件上传的配置
static{
Properties fileProperties = new Properties();
InputStream iStream =FileUploadUtils.class.getResourceAsStream("/fileUpload.properties");
try {
fileProperties.load(iStream);
} catch (IOException e) {
// TODO Auto-generatedcatch block
e.printStackTrace();
}
baseName = fileProperties.getProperty("basepath");
}
//把上传的文件名字改成UUID
public static String getUUIDName(String fileName){
UUID uuid = UUID.randomUUID();
String extension = fileName.substring(fileName.lastIndexOf("."));
return uuid+extension;
}
//得到服务器上的保存路径
public static String getSavePath(String realPath){
//对上传的文件进行分级
Calendar calendar = new GregorianCalendar();
int year = calendar.get(Calendar.YEAR);
int month = calendar.get(Calendar.MONTH);
int day =calendar.get(Calendar.DAY_OF_MONTH);
String savePath = realPath+"\\"+year+"\\"+month+"\\"+day;
File file = new File(savePath);
if (!file.exists()) {
file.mkdirs();
}
System.out.println(savePath);
return savePath;
}
}