20171023_chr_classupload Struts2字节流完成文件上传

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字节流完成文件上传

/20171023_chr_classupload/src/nuc/sw/action/UploadAction.java

package nuc.sw.action;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.util.UUID;import com.opensymphony.xwork2.ActionSupport;public class UploadAction extends ActionSupport {      private String title;      private File upload;      private String uploadContentType;      private String uploadFileName;      private String savePath;      public String getTitle() {        return title;      }      public void setTitle(String title) {        this.title = title;      }      public File getUpload() {        return upload;      }      public void setUpload(File upload) {        this.upload = upload;      }      public String getUploadContentType() {        return uploadContentType;      }      public void setUploadContentType(String uploadContentType) {        this.uploadContentType = uploadContentType;      }      public String getUploadFileName() {        return uploadFileName;      }      public void setUploadFileName(String uploadFileName) {        this.uploadFileName = uploadFileName;      }      public String getSavePath() {        return savePath;      }      public void setSavePath(String savePath) {        this.savePath = savePath;      }      //处理上传文件的方法      public String upload() throws IOException{          //了解三个参数概念          System.out.println(upload);          System.out.println(uploadContentType);          System.out.println(uploadFileName);          //完成上传,用字节流（二进制形式）          try {            FileInputStream fis=new FileInputStream(upload);            String newFileName=UUID.randomUUID().toString()+"_"+uploadFileName;            FileOutputStream fos=new FileOutputStream(savePath+"/"+newFileName);            byte[] buffer=new byte[1024];            int len=0;            while((len=fis.read(buffer))>0) {                fos.write(buffer, 0, len);            }        } catch (FileNotFoundException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }               return "uploadOK";      }}

/20171023_chr_classupload/src/struts.xml

<struts>    <constant name="struts.multipart.saveDir" value="f:/upload"></constant>    <!-- Add packages here -->    <package name="uploadPackage" namespace="/" extends="struts-default">      <action name="uploadAction" class="nuc.sw.action.UploadAction" method="upload">       <interceptor-ref name="fileUpload">        <param name="allowedExtensions">txt,doc,docx,jpg</param>        <param name="maximumSize">1024000</param>        <param name="allowedTypes">text/plain</param>       </interceptor-ref>       <interceptor-ref name="defaultStack"></interceptor-ref>       <param name="savePath">f:/uploadRealFile</param>       <result name="uploadOK">        /success.jsp       </result>       <result name="input">        /upload.jsp       </result>      </action>     </package></struts>

/20171023_chr_classupload/WebContent/success.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>成功页</title></head><body>  上传成功！！！</body></html>

/20171023_chr_classupload/WebContent/upload.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><%@ taglib prefix="s" uri="/struts-tags" %><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>文件上传页</title></head><body> <s:fielderror></s:fielderror> <s:form action="uploadAction" method="post" enctype="multipart/form-data">  <s:textfield label="文件主题" name="title"></s:textfield>  <s:file label="选择文件" name="upload"></s:file>  <s:submit value="上传"></s:submit> </s:form></body></html>

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