Struts2文件下传详解

Struts2文件上传详解

Struts2文件上传：
一：请选参看Struts2_9中的Struts2上传原理
二：加入Struts2的支持
三：页面
  <s:form action="upload" method="post" enctype="multipart/form-data">
   <s:textfield name="username" label="用户名"></s:textfield>
   <s:password name="password" label="密码"></s:password>
   <s:file name="myfile" label="文件"></s:file>
   <s:submit></s:submit>
  </s:form>
四：strus.xml配置说明：
  <struts>
   
   <constant name="struts.i18n.encoding" value="gbk"></constant>
   
   <constant name="struts.multipart.saveDir" value="c:\"></constant>
   
   <package name="mengya" extends="struts-default">

    <action name="upload" class="com.mengya.action.UploadAction">
     <result name="success">/result.jsp</result>
    </action>

   </package>
  </struts>
五：上传的Action说明：
  /**
   * Struts2上传
   * @author 张明学
   *
   */
  public class UploadAction extends ActionSupport {
   private String username;

   private String password;
   /**
    * 对应页面中的File标签的名称
    */
   private File myfile;

   /**
    * 这个属性由Struts2自动生成。规则：File字段的属性名+FileName和File字段的属性名+ContentType
    * File字段的属性名+FileName表示上传的文件名
    */
   private String myfileFileName;

   /**
    * File字段的属性名+ContentType表示上传的文件的类型
    */
   private String myfileContentType;

   @Override
   public String execute() throws Exception {

    InputStream is=new FileInputStream(myfile);
    /**
     * 上传到服务器的目录
     */
    String root=ServletActionContext.getRequest().getRealPath("/upload");

    File destFile=new File(root,this.getMyfileFileName());

    OutputStream os=new FileOutputStream(destFile);

    byte[] buffer=new byte[400];

    int length=0;

    while((length=is.read(buffer))>0){
     os.write(buffer,0,length);
    }
    os.close();
    is.close();

    return SUCCESS;
   }

   public File getMyfile() {
    return myfile;
   }

   public void setMyfile(File myfile) {
    this.myfile = myfile;
   }

   public String getPassword() {
    return password;
   }

   public void setPassword(String password) {
    this.password = password;
   }

   public String getUsername() {
    return username;
   }

   public void setUsername(String username) {
    this.username = username;
   }

   public String getMyfileContentType() {
    return myfileContentType;
   }

   public void setMyfileContentType(String myfileContentType) {
    this.myfileContentType = myfileContentType;
   }

   public String getMyfileFileName() {
    return myfileFileName;
   }

   public void setMyfileFileName(String myfileFileName) {
    this.myfileFileName = myfileFileName;
   }

  }

Struts2文件上传详解

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