javaweb图片上传和文件上传实例

private File file; //file控件名

private String fileContentType;//图片类型

private String fileFileName; //文件名

<%@ page language="java" cOntentType="text/html; charset=UTF-8" 
  pageEncoding="UTF-8"%> 
 
 
 
 
 
 
 

package com.cpsec.tang.chemical.action;

import java.io.File;
import java.io.IOException;
import java.util.Random;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;

import org.apache.commons.io.FileUtils;
import org.apache.struts2.ServletActionContext;
import org.springframework.stereotype.Controller;

import com.cpsec.tang.chemical.biz.LunboBiz;
import com.cpsec.tang.chemical.entity.Image;
import com.opensymphony.xwork2.ActionSupport;


@Controller("lunboAction")
public class LunboAction extends ActionSupport {
  /**
   * 
   */
  private static final long serialVersiOnUID= 1L;
  @Resource(name="lunboBiz")
  private LunboBiz lunboBiz;
  private Image image;
  private File file; //file控件名
  private String fileContentType;//图片类型
  private String fileFileName; //文件名
  private Integer number;
  
  public String findImage(){
    image=lunboBiz.findImage();
    return SUCCESS;
  }
  
  public String alterImage(){
    image=lunboBiz.findImage();
    return SUCCESS;
  }
  
  public String alterImage1(){
    HttpServletRequest request = ServletActionContext.getRequest();
    String root = request.getRealPath("/upload");//图片要上传到的服务器路径
    String names[]=fileFileName.split("\\.");
    String fileName="";
    if(names.length>=1){
      fileName=getRandomString(20)+"."+names[names.length-1];
    }
    String picPath="upload/"+fileName;//图片保存到数据库的路径
    File file1=new File(root);
    try {
      FileUtils.copyFile(file, new File(file1,fileName));
      }
    } catch (IOException e) {
      e.printStackTrace();
    }
    return SUCCESS;
  }
  
  /*获取一条随机字符串*/
  public String getRandomString(int length) { //length表示生成字符串的长度 
    String base = "abcdefghijklmnopqrstuvwxyz0123456789";   
    Random random = new Random();   
    StringBuffer sb = new StringBuffer();   
    for (int i = 0; i 

@Controller("contractAction")
public class ContractAction extends ActionSupport {
  
  private final static String UPLOADDIR = "/files";//文件上传的路径，在webContent下建立
  private File file; //input控件名一定为file 
  //上传文件名集合  
  private String fileFileName;  
  //上传文件内容类型集合  
  private String fileContentType; 
  
  private String filename;
 
  public String upload() throws FileNotFoundException, IOException{
    String path=uploadFile();//文件保存数据库的路径
  
    return SUCCESS;
  }
  
  //执行上传功能  
  @SuppressWarnings("deprecation")
  public String uploadFile() throws FileNotFoundException, IOException {  
    try {  
      InputStream in = new FileInputStream(file);  
      String dir = ServletActionContext.getRequest().getRealPath(UPLOADDIR); 
      File fileLocation = new File(dir); 
      //此处也可以在应用根目录手动建立目标上传目录 
      if(!fileLocation.exists()){ 
        boolean isCreated = fileLocation.mkdir(); 
        if(!isCreated) { 
          //目标上传目录创建失败,可做其他处理,例如抛出自定义异常等,一般应该不会出现这种情况。 
          return null; 
        } 
      }
      // this.setFileFileName(getRandomString(20));
      String[] Name=this.getFileFileName().split("\\.");
      String fileName=getRandomString(20)+"."+Name[Name.length-1];
      this.setFileFileName(fileName);
      System.out.println(fileName);
      File uploadFile = new File(dir, fileName);
      OutputStream out = new FileOutputStream(uploadFile);  
      byte[] buffer = new byte[1024 * 1024];  
      int length;  
      while ((length = in.read(buffer)) > 0) {  
        out.write(buffer, 0, length);  
      }
      in.close();  
      out.close();  
      return UPLOADDIR.substring(1)+"\\"+fileFileName;
      } catch (FileNotFoundException ex) {
        return null;  
      } catch (IOException ex) {
        return null;  
    }  
  }
  
  
  public static String getRandomString(int length){
    String str="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
    Random random=new Random();
    StringBuffer sb=new StringBuffer();
    for(int i=0;i

package com.cpsec.tang.chemical.action;

import java.io.File; 
import java.io.FileInputStream; 
import java.io.FileNotFoundException; 
import java.io.FileOutputStream; 
import java.io.IOException; 
import java.io.InputStream; 
import java.io.OutputStream;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;


/**
 * 多文件上传
 */
public class FilesUploadAction extends ActionSupport {
     //上传文件存放路径  
     private final static String UPLOADDIR = "/upload";  
     //上传文件集合  
     private List file;  
     //上传文件名集合  
     private List fileFileName;  
     //上传文件内容类型集合  
     private List fileContentType;  
     
     public List getFile() {  
       return file;  
     }  
 
     public void setFile(List file) {  
       this.file = file;  
     }  
 
    public List getFileFileName() {  
      return fileFileName;  
    }  
 
     public void setFileFileName(List fileFileName) {  
       this.fileFileName = fileFileName;  
     }  
 
     public List getFileContentType() {  
       return fileContentType;  
     }  
 
     public void setFileContentType(List fileContentType) {  
       this.fileCOntentType= fileContentType;  
     }  
 
     
     public String uploadform() throws Exception {
       HttpServletRequest request = ServletActionContext.getRequest();
       String webpath=null;//上传路径
       for (int i = 0; i  0) {  
           out.write(buffer, 0, length);  
         }
         in.close();  
         out.close();  
         return uploadFile.toString();
       } catch (FileNotFoundException ex) {
         return null;  
       } catch (IOException ex) {
         return null;  
       }  
     }
   }