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struts2文件上传

2015-12-05 16:57 555 查看

上传页面:

<body>
<div style="color:red">
<s:fielderror key="upload"/>
</div>
<s:form action="upload" enctype="multipart/form-data">
<s:textfield name="title" label="文件标题"/>
<s:file name="upload" label="选择文件" />
<s:submit value="Upload"/>
</s:form>
</body>

struts.xml:

<pre name="code" class="html"><?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
<!-- 指定全局国际化资源文件 -->
<constant name="struts.custom.i18n.resources" value="mess"/>
<constant name="struts.i18n.encoding" value="UTF-8"/>
<!-- 使用感叹号的方式动态调用action，需要将value=“true” 默认为false-->
<constant name="struts.enable.DynamicMethodInvocation" value="false" />
<constant name="struts.devMode" value="true" />
<!-- 指定一个文件上传的临时路径 -->
<constant name="struts.multipart.saveDir" value="D:/uploadtemp"/>
<package name="default" namespace="/" extends="struts-default">
<action name="login" class="com.hnust.cn.action.LoginAction">
<result name="error">/error.jsp</result>
<result name="success">/welcome.jsp</result>
</action>
<action name="login2" class="com.hnust.cn.action.LoginAction2">
<result name="error">/error.jsp</result>
<result name="success">/welcome.jsp</result>
</action>
<action name="regist" class="com.hnust.cn.action.RegistAction">
<result name="input">/registForm.jsp</result>
<result name="success">/welcome.jsp</result>
</action>
<action name="upload" class="com.hnust.cn.action.UploadAction">
<!-- 动态设置上传文件的保存路径 -->
<param name="savePath">/uploadFiles</param>
<!-- 设置允许上传文件的类型 -->
<param name="allowTypes">image/png,image/gif,image/jpeg</param>
<result name="input">/uploadForm.jsp</result>
<result name="success">/uploadSuccess.jsp</result>
</action>
<!--
<action name="*">
<result>/{1}.jsp</result>
</action>
-->
</package>

</struts>

UploadAction:

<pre name="code" class="java">package com.hnust.cn.action;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;

public class UploadAction extends ActionSupport {

private String title;//封装文件标题请求参数的成员变量
private File upload;//封装上传文件域的成员变量
private String uploadContentType;//封装上传文件类型的成员变量；
private String uploadFileName;//封装上传文件名的属性
private String savePath;//直接在struts.xml文件配置值的方法
private String allowTypes;//定义Action上传的文件类型，可以在strust.xml动态设置allowTypes的值

public String getAllowTypes() {
return allowTypes;
}
public void setAllowTypes(String allowTypes) {
this.allowTypes = allowTypes;
}
//接收struts.xml文件配置值的方法
public void setSavePath(String value){
this.savePath=value;
}
//获取上传文件的保存位置
public String getSavePath(){
return ServletActionContext.getServletContext().getRealPath(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;
}

@Override
public String execute() throws Exception {
// TODO Auto-generated method stub
System.out.println("文件标题："+title);
System.out.println("文件类型："+uploadContentType);
System.out.println("文件名字:"+uploadFileName);
System.out.println("文件保存路径："+getSavePath());
FileOutputStream fos=new FileOutputStream(getSavePath()+"\\"+getUploadFileName());
FileInputStream fis=new FileInputStream(getUpload());
byte[] buffer=new byte[1024];
int len=0;
while((len=fis.read(buffer))>0){
fos.write(buffer,0,len);
}
return SUCCESS;
}
@Override
public void validate() {
// TODO Auto-generated method stub
String filterResult=filterTypes(getAllowTypes().split(","));
if(filterResult!=null){
addFieldError("upload", "上传文件不合法");
}
}
/***
* 过滤文件类型
* @param types  系统允许上传的文件类型
* @return 上传的文件类型可以上传 返回null,否则返回"error"
*/
public String filterTypes(String[] types){
String fileType=getUploadContentType();   //获取可以上传的所有文件类型
for(String type:types){
if(type.equals(fileType)){
return null;
}
}
return ERROR;
}
//	@Override
//	public void addFieldError(String fieldName, String errorMessage) {
//		// TODO Auto-generated method stub
//		 String s=errorMessage;
//		 String f=fieldName;
//		 System.out.println(s);
//		 System.out.println(f);
//	}
}

上传成功页面:

<pre name="code" class="html">  <body>

upload file success! <br>
文件标题:<s:property value="+title"/>
文件为:<img src="<s:property value="uploadFiles/'+uploadFileName"/>"/><br/>
</body>

下面是Android上传文件：

后台其实我觉得是一样的。代码是借用的以为大神的

FormFiles:

package com.cn.hnustofsenior.pojo;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.lang.reflect.Field;

import android.R.integer;

/***
* 文件数组对象
* @author zzg
*
*/
public class FormFile {
/* 上传文件的数据 */
private byte[] data;
private InputStream inStream;
private File file;
/* 文件名称 */
private String filname;
/* 请求参数名称*/
private String parameterName;
/* 内容类型 */
private String contentType = "application/octet-stream";

public FormFile(String filname, byte[] data, String parameterName, String contentType) {
this.data = data;
this.filname = filname;
this.parameterName = parameterName;
if(contentType!=null) this.contentType = contentType;
}

public FormFile(String filname, File file, String parameterName, String contentType) {
this.filname = filname;
this.parameterName = parameterName;
this.file = file;
try {
this.inStream = new FileInputStream(file);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
if(contentType!=null) this.contentType = contentType;
}

public File getFile() {
return file;
}

public InputStream getInStream() {
return inStream;
}

public byte[] getData() {
return data;
}

public String getFilname() {
return filname;
}

public void setFilname(String filname) {
this.filname = filname;
}

public String getParameterName() {
return parameterName;
}

public void setParameterName(String parameterName) {
this.parameterName = parameterName;
}

public String getContentType() {
return contentType;
}

public void setContentType(String contentType) {
this.contentType = contentType;
}
}

上传文件的工具类:

package com.cn.hnustofsenior.util;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.Socket;
import java.net.URL;
import java.util.Map;

import com.cn.hnustofsenior.pojo.FormFile;

public class MultipartFormDataNetUtil {
/**
*多文件上传
* 直接通过HTTP协议提交数据到服务器,实现如下面表单提交功能:
*   <FORM METHOD=POST ACTION="http://192.168.1.101:8083/upload/servlet/UploadServlet" enctype="multipart/form-data">
<INPUT TYPE="text" NAME="name">
<INPUT TYPE="text" NAME="id">
<input type="file" name="imagefile"/>
<input type="file" name="zip"/>
</FORM>
* @param path 上传路径(注：避免使用localhost或127.0.0.1这样的路径测试，因为它会指向手机模拟器，你可以使用http://www.iteye.cn或http://192.168.1.101:8083这样的路径测试)
* @param params 请求参数 key为参数名,value为参数值
* @param file 上传文件
*/
public static boolean post(String path, Map<String, String> params, FormFile[] files) throws Exception{
final String BOUNDARY = "---------------------------7da2137580612"; //数据分隔线
final String endline = "--" + BOUNDARY + "--\r\n";//数据结束标志

int fileDataLength = 0;
for(FormFile uploadFile : files){//得到文件类型数据的总长度
StringBuilder fileExplain = new StringBuilder();
fileExplain.append("--");
fileExplain.append(BOUNDARY);
fileExplain.append("\r\n");
fileExplain.append("Content-Disposition: form-data;name=\""+ uploadFile.getParameterName()+"\";filename=\""+ uploadFile.getFilname() + "\"\r\n");
fileExplain.append("Content-Type: "+ uploadFile.getContentType()+"\r\n\r\n");
fileExplain.append("\r\n");
fileDataLength += fileExplain.length();
if(uploadFile.getInStream()!=null){
fileDataLength += uploadFile.getFile().length();
}else{
fileDataLength += uploadFile.getData().length;
}
}
StringBuilder textEntity = new StringBuilder();
for (Map.Entry<String, String> entry : params.entrySet()) {//构造文本类型参数的实体数据
textEntity.append("--");
textEntity.append(BOUNDARY);
textEntity.append("\r\n");
textEntity.append("Content-Disposition: form-data; name=\""+ entry.getKey() + "\"\r\n\r\n");
textEntity.append(entry.getValue());
textEntity.append("\r\n");
}
//计算传输给服务器的实体数据总长度
int dataLength = textEntity.toString().getBytes().length + fileDataLength +  endline.getBytes().length;

URL url = new URL(path);
int port = url.getPort()==-1 ? 80 : url.getPort();
Socket socket = new Socket(InetAddress.getByName(url.getHost()), port);
OutputStream outStream = socket.getOutputStream();
//下面完成HTTP请求头的发送
String requestmethod = "POST "+ url.getPath()+" HTTP/1.1\r\n";
outStream.write(requestmethod.getBytes());
String accept = "Accept: image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*\r\n";
outStream.write(accept.getBytes());
String language = "Accept-Language: zh-CN\r\n";
outStream.write(language.getBytes());
String contenttype = "Content-Type: multipart/form-data; boundary="+ BOUNDARY+ "\r\n";
outStream.write(contenttype.getBytes());
String contentlength = "Content-Length: "+ dataLength + "\r\n";
outStream.write(contentlength.getBytes());
String alive = "Connection: Keep-Alive\r\n";
outStream.write(alive.getBytes());
String host = "Host: "+ url.getHost() +":"+ port +"\r\n";
outStream.write(host.getBytes());
//写完HTTP请求头后根据HTTP协议再写一个回车换行
outStream.write("\r\n".getBytes());
//把所有文本类型的实体数据发送出来
outStream.write(textEntity.toString().getBytes());
//把所有文件类型的实体数据发送出来
for(FormFile uploadFile : files){
StringBuilder fileEntity = new StringBuilder();
fileEntity.append("--");
fileEntity.append(BOUNDARY);
fileEntity.append("\r\n");
fileEntity.append("Content-Disposition: form-data;name=\""+ uploadFile.getParameterName()+"\";filename=\""+ uploadFile.getFilname() + "\"\r\n");
fileEntity.append("Content-Type: "+ uploadFile.getContentType()+"\r\n\r\n");
outStream.write(fileEntity.toString().getBytes());
if(uploadFile.getInStream()!=null){
byte[] buffer = new byte[1024];
int len = 0;
while((len = uploadFile.getInStream().read(buffer, 0, 1024))!=-1){
outStream.write(buffer, 0, len);
}
uploadFile.getInStream().close();
}else{
outStream.write(uploadFile.getData(), 0, uploadFile.getData().length);
}
outStream.write("\r\n".getBytes());
}
//下面发送数据结束标志，表示数据已经结束
outStream.write(endline.getBytes());

BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
if(reader.readLine().indexOf("200")==-1){//读取web服务器返回的数据，判断请求码是否为200，如果不是200，代表请求失败
return false;
}
outStream.flush();
outStream.close();
reader.close();
socket.close();
return true;
}

/**
*单文件上传
* 提交数据到服务器
* @param path 上传路径(注：避免使用localhost或127.0.0.1这样的路径测试，因为它会指向手机模拟器，你可以使用http://www.itcast.cn或http://192.168.1.10:8080这样的路径测试)
* @param params 请求参数 key为参数名,value为参数值
* @param file 上传文件
*/
public static boolean post(String path, Map<String, String> params, FormFile file) throws Exception{
return post(path, params, new FormFile[]{file});
}
}

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