Strust2实现文件上传

//前端页面

<form action="${pageContext.request.contextPath}/upload" enctype="multipart/form-data" method="post" >    <span style="white-space:pre">  </span>上传文件：<input type="file" name="image"><br/>    <span style="white-space:pre"> </span><input type="submit" value="提交"/>    </form>  

// strust2 配置

<action name="upload" class="com.itheima.upload.UploadFile" method="upload">     <interceptor-ref name="fileUpload"/>     <interceptor-ref name="basicStack"/>     <result name="success">good_result.jsp</result> </action>

//java代码

import java.io.File;import java.io.IOException;import org.apache.commons.io.FileUtils;import com.opensymphony.xwork2.ActionSupport;public class UploadFile extends ActionSupport{            private static final long serialVersionUID = 1L;              private File image; //上传的文件      private String imageFileName; //文件名称      private String imageContentType; //文件类型            public File getImage() {          return image;      }      public void setImage(File image) {          this.image = image;      }      public String getImageFileName() {          return imageFileName;      }      public void setImageFileName(String imageFileName) {          this.imageFileName = imageFileName;      }      public String getImageContentType() {          return imageContentType;      }      public void setImageContentType(String imageContentType) {          this.imageContentType = imageContentType;      }                public String upload(){          String realpath="F:\\Leanning";        if(image != null){              File savefile = new File(new File(realpath), imageFileName);              System.out.println(savefile);              System.out.println(savefile.getParentFile());             savefile.getParentFile().mkdirs();             if(savefile.getParentFile().exists()){                  try {                                   FileUtils.copyFile(image, savefile);                    System.out.println("文件上传成功");                } catch (IOException e) {                      e.printStackTrace();                  }                          }          }          /**          * 若要存入数据库          * fileName是在entity实体类中声明存放文件名称的变量          * yu.setFileName(imageFileName) 这样将文件名称存入数据库          * 文件路径为：savefile          */                  return null;      }  }