struts2如何上传文件

发布时间: 2023-03-04 05:04:33

① struts2文件上传

可以用随机函数，得到一个随机数，再加上当前的时间，作为一个符号串当文件的文件名，然后把上传的文件取得原来的文件名，截取原来文件名的后缀名，记得连点一起截取，这样就可以把刚才的随机数加时间再加截取得的后缀名作为新的文件名；代码如下：其在action是这样：package huan.lin.shopaction;import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Date;
import java.util.Random;import org.apache.struts2.ServletActionContext;import huan.lin.shopbean.Shop;
import huan.lin.shopservice.Shopservice;import com.opensymphony.xwork2.ActionSupport;public class Saveshopaction extends ActionSupport {
private static final long serialVersionUID = -7387264205534303757L; private Shopservice shopservice; private String spname;
private String sppaizi;
private String spms;
private String sppicurl;
private String sphave;
private double spprice;

private File file;
private String fileFileName;
private String fileContentType; @SuppressWarnings("deprecation")
public String execute() throws Exception {

//文件上传
long time = new Date().getTime();
Random ran = new Random();
int newran = ran.nextInt(10000);
InputStream is = new FileInputStream(file);
String sub = this.getFileFileName();
String subname = sub.substring(sub.lastIndexOf(".", sub.length()));
String filename = time + "" + newran + subname;
String root = ServletActionContext.getRequest().getRealPath("/uploadsmallimage");
File destFile = new File(root, filename);
OutputStream os = new FileOutputStream(destFile);
byte[] buffer = new byte[4000];
int length = 0;
while ((length = is.read(buffer)) > 0) {
os.write(buffer, 0, length);
}
is.close();
os.close();
//数据保存 Shop shop = new Shop();

shop.setSpname(spname);
shop.setSppaizi(sppaizi);
shop.setSpprice(spprice);
shop.setSphave(sphave);
shop.setSpms(spms);
shop.setSppicurl(filename); this.getShopservice().save(shop);
return SUCCESS;
}
public Shopservice getShopservice() {
return shopservice;
} public void setShopservice(Shopservice shopservice) {
this.shopservice = shopservice;
} public String getSpname() {
return spname;
} public void setSpname(String spname) {
this.spname = spname;
} public String getSpms() {
return spms;
} public void setSpms(String spms) {
this.spms = spms;
} public String getSppicurl() {
return sppicurl;
} public void setSppicurl(String sppicurl) {
this.sppicurl = sppicurl;
} public String getSphave() {
return sphave;
} public void setSphave(String sphave) {
this.sphave = sphave;
}
public File getFile() {
return file;
} public void setFile(File file) {
this.file = file;
} public String getFileFileName() {
return fileFileName;
} public void setFileFileName(String fileFileName) {
this.fileFileName = fileFileName;
} public String getFileContentType() {
return fileContentType;
} public void setFileContentType(String fileContentType) {
this.fileContentType = fileContentType;
} public double getSpprice() {
return spprice;
} public void setSpprice(double spprice) {
this.spprice = spprice;
}
public void validate()
{

}
public String getSppaizi() {
return sppaizi;
}
public void setSppaizi(String sppaizi) {
this.sppaizi = sppaizi;
}
}
在servlet中如下： package huan.lin;import java.io.IOException;
import java.sql.SQLException;import java.util.Date;
import java.util.Random;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.sql.DataSource;import org.apache.commons.dbutils.QueryRunner;import com.jspsmart.upload.File;
import com.jspsmart.upload.Files;
import com.jspsmart.upload.SmartUpload;public class PhotouploadServlet extends HttpServlet { private static final long serialVersionUID = -806574948649837705L; public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response); } public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
HttpSession session = request.getSession();
Users users = (Users) session.getAttribute("users");
if (users == null) {
response.sendRedirect("/lin01/admin/login.jsp");
} else {

request.setCharacterEncoding("utf-8");
String newname = "";
// 新建一个SmartUpload对象
SmartUpload su = new SmartUpload();
// 上传初始化 su.initialize(this.getServletConfig(), request, response);
// 限制每个上传文件的最大长度。 su.setMaxFileSize(600000);
// 限制总上传数据的长度。
// su.setTotalMaxFileSize(200000);
// 设定允许上传的文件（通过扩展名限制）,仅允许doc,txt文件。
su.setAllowedFilesList("jpeg,gif,jpg,bmp"); try { su.upload(); Files fes = su.getFiles();
File fe = fes.getFile(0);
String name = fe.getFileName();
String subname = name.substring(name.lastIndexOf("."), name
.length());
long time1 = new Date().getTime();
Random ran = new Random();
int newran = ran.nextInt(10000);
newname = time1 + "" + newran + subname;

ServletContext sc = this.getServletContext();
String path = sc.getRealPath("upload");
fe.saveAs(path+"/"+newname); InitialContext ctx = null;
try {
ctx = new InitialContext();
} catch (NamingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
DataSource ds = null;
try {
ds = (DataSource)ctx.lookup("java:comp/env/jdbc/rollerdb");
} catch (NamingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
int result = 0; try { String sql = "insert into photo (name) values (?)"; String params[] = { newname };
// DButils中核心类，生成对象时传递数据源对象
QueryRunner qr = new QueryRunner(ds); result = qr.update(sql, params);
} catch (SQLException e) {
e.printStackTrace();
}

String message = "";
if (result == 1) {
message = "Congratulation to you（恭喜你），上传成功！";
} else {
message = "Sorry,上传失败！";
} request.setAttribute("message", message); request.getRequestDispatcher("/photouploadsuccess.jsp").forward(request,
response); } catch (Exception e) {
response.sendRedirect("/lin01/uploadphotoerror.jsp");
} }
}}

② 怎么用struts2实现多图片上传

新建Web Project，在WebRoot下新建upload文件夹
在WebRoot下新建upload.jsp，上传界面

编写上传成功、失败的提示界面。
在WebRoot下新建uploadError.jsp

在WebRoot下新建 uploadSuccess.jsp

编写Action类

配置struts.xml文件，重置fileUpload拦截器。

测试，测试完成之后在tomcat下面webapps目录下找到项目对应的文件夹下的upload下查看

③ struts2怎样上传文件到数据库中

struts2怎样上传文件到数据库中
struts2上传文件保存到数据库中，参考代码如下：
File file=new File("D:/2.jpg");
try {
FileInputStream in=new FileInputStream(file);
int len=0;
byte[] b=new byte[(int) file.length()];
in.read(b);
in.close();
System.out.println(b.length);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

④ java中怎么利用struts2上传多个pdf文件

通过3种方式模拟多个文件上传
第一种方式
package com.ljq.action;
import java.io.File;
import org.apache.commons.io.FileUtils;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
@SuppressWarnings("serial")
public class UploadAction extends ActionSupport{
private File[] image; //上传的文件
private String[] imageFileName; //文件名称
private String[] imageContentType; //文件类型
public String execute() throws Exception {
ServletActionContext.getRequest().setCharacterEncoding("UTF-8");
String realpath = ServletActionContext.getServletContext().getRealPath("/images");
System.out.println(realpath);
if (image != null) {
File savedir=new File(realpath);
if(!savedir.getParentFile().exists())
savedir.getParentFile().mkdirs();
for(int i=0;i<image.length;i++){
File savefile = new File(savedir, imageFileName[i]);
FileUtils.File(image[i], savefile);
}
ActionContext.getContext().put("message", "文件上传成功");
}
return "success";
}
public File[] getImage() {
return image;
}
public void setImage(File[] image) {
this.image = image;
}
public String[] getImageContentType() {
return imageContentType;
}
public void setImageContentType(String[] imageContentType) {
this.imageContentType = imageContentType;
}
public String[] getImageFileName() {
return imageFileName;
}
public void setImageFileName(String[] imageFileName) {
this.imageFileName = imageFileName;
}
}
第二种方式
package com.ljq.action;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
/**
* 使用数组上传多个文件
*
* @author ljq
*
*/
@SuppressWarnings("serial")
public class UploadAction2 extends ActionSupport{
private File[] image; //上传的文件
private String[] imageFileName; //文件名称
private String[] imageContentType; //文件类型
private String savePath;
@Override
public String execute() throws Exception {
ServletActionContext.getRequest().setCharacterEncoding("UTF-8");
//取得需要上传的文件数组
File[] files = getImage();
if (files !=null && files.length > 0) {
for (int i = 0; i < files.length; i++) {
//建立上传文件的输出流, getImageFileName()[i]
System.out.println(getSavePath() + "\\" + getImageFileName()[i]);
FileOutputStream fos = new FileOutputStream(getSavePath() + "\\" + getImageFileName()[i]);
//建立上传文件的输入流
FileInputStream fis = new FileInputStream(files[i]);
byte[] buffer = new byte[1024];
int len = 0;
while ((len=fis.read(buffer))>0) {
fos.write(buffer, 0, len);
}
fos.close();
fis.close();
}
}
return SUCCESS;
}
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;
}
/**
* 返回上传文件保存的位置
*
* @return
* @throws Exception
*/
public String getSavePath() throws Exception {
return ServletActionContext.getServletContext().getRealPath(savePath);
}
public void setSavePath(String savePath) {
this.savePath = savePath;
}
}
第三种方式
package com.ljq.action;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.List;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
/**
* 使用List上传多个文件
*
* @author ljq
*
*/
@SuppressWarnings("serial")
public class UploadAction3 extends ActionSupport {
private List<File> image; // 上传的文件
private List<String> imageFileName; // 文件名称
private List<String> imageContentType; // 文件类型
private String savePath;
@Override
public String execute() throws Exception {
ServletActionContext.getRequest().setCharacterEncoding("UTF-8");
// 取得需要上传的文件数组
List<File> files = getImage();
if (files != null && files.size() > 0) {
for (int i = 0; i < files.size(); i++) {
FileOutputStream fos = new FileOutputStream(getSavePath() + "\\" + getImageFileName().get(i));
FileInputStream fis = new FileInputStream(files.get(i));
byte[] buffer = new byte[1024];
int len = 0;
while ((len = fis.read(buffer)) > 0) {
fos.write(buffer, 0, len);
}
fis.close();
fos.close();
}
}
return SUCCESS;
}
public List<File> getImage() {
return image;
}
public void setImage(List<File> image) {
this.image = image;
}
public List<String> getImageFileName() {
return imageFileName;
}
public void setImageFileName(List<String> imageFileName) {
this.imageFileName = imageFileName;
}
public List<String> getImageContentType() {
return imageContentType;
}
public void setImageContentType(List<String> imageContentType) {
this.imageContentType = imageContentType;
}
/**
* 返回上传文件保存的位置
*
* @return
* @throws Exception
*/
public String getSavePath() throws Exception {
return ServletActionContext.getServletContext().getRealPath(savePath);
}
public void setSavePath(String savePath) {
this.savePath = savePath;
}
}
struts.xml配置文件
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>

<constant name="struts.action.extension" value="do" />

<constant name="struts.serve.static.browserCache" value="false" />

<constant name="struts.configuration.xml.reload" value="true" />

<constant name="struts.devMode" value="true" />

<constant name="struts.ui.theme" value="simple" />


<constant name="struts.i18n.encoding" value="UTF-8" />
<constant name="struts.multipart.maxSize" value="10701096"/>
<package name="upload" namespace="/upload" extends="struts-default">
<action name="*_upload" class="com.ljq.action.UploadAction" method="{1}">
<result name="success">/WEB-INF/page/message.jsp</result>
</action>
</package>
<package name="upload1" namespace="/upload1" extends="struts-default">
<action name="upload1" class="com.ljq.action.UploadAction2" method="execute">

<param name="savePath">/image</param>
<result name="success">/WEB-INF/page/message.jsp</result>
</action>
</package>
<package name="upload2" namespace="/upload2" extends="struts-default">
<action name="upload2" class="com.ljq.action.UploadAction3" method="execute">

<param name="savePath">/image</param>
<result name="success">/WEB-INF/page/message.jsp</result>
</action>
</package>
</struts>
上传表单页面upload.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>文件上传</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
</head>
<body>




<form action="${pageContext.request.contextPath}/upload2/upload2.do" enctype="multipart/form-data" method="post">
文件1:<input type="file" name="image"><br/>
文件2:<input type="file" name="image"><br/>
文件3:<input type="file" name="image"><br/>
<input type="submit" value="上传" />
</form>
</body>
</html>
显示页面message.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="/struts-tags" prefix="s"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'message.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
</head>
<body>
上传成功
<br/>
<s:debug></s:debug>
</body>
</html>

⑤ 怎样将struts2上传文件保存到数据库中

1在你的struts-config中首先不能使用form，使用的话会报错
2在你jsp的form中增加属性enctype="multipart/form-data"
这样你的文件内容会被都城二进制数据传到后台，在后台获取值保存及可以了

阅读全文

热点内容

内置存储卡可以拆吗发布：2025-05-18 04:16:35 浏览：336

编译原理课时设置发布：2025-05-18 04:13:28 浏览：379

linux中进入ip地址服务器发布：2025-05-18 04:11:21 浏览：613

java用什么软件写发布：2025-05-18 03:56:19 浏览：32

linux配置vim编译c 发布：2025-05-18 03:55:07 浏览：107

砸百鬼脚本发布：2025-05-18 03:53:34 浏览：945

安卓手机如何拍视频和苹果一样发布：2025-05-18 03:40:47 浏览：742

为什么安卓手机连不上苹果7热点发布：2025-05-18 03:40:13 浏览：803

网卡访问发布：2025-05-18 03:35:04 浏览：511

接收和发送服务器地址发布：2025-05-18 03:33:48 浏览：372

struts2如何上传文件

与struts2如何上传文件相关的资讯