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Struts2+Android (2) 实现信息,文件上传功能
继续中午的话题,中午实现了获取WebService今晚是上传文件 本工程也实现了上传文字(废话)可以直接在服务器控制台打印出来
还是第一篇的http://blog.csdn.net/sfshine/article/details/7564328工程
struts增加一个action
<?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>
<package name="struts2" extends="struts-default">
<action name="getlist" class="com.su.action.VideoListAction">
<result name="xml">/videos.jsp</result>
<result name="json">/jsonvideos.jsp</result>
</action>
<action name="upload" class="com.su.action.VideoManageAction">
<result name="success">/result.jsp</result>
</action>
</package>
</struts>
也就是文件上传的action
然后是测试使用的上传界面(好大 坑嗲)
<s:form action="upload.action" method="post" enctype="multipart/form-data"> <table Width="80%" height="60%"> <tr> <td Width="20%"></td> <td Width="20%"> 资源题目: </td> <td> <input type="text" name="title" Width="80%"> </td> <tr> <td Width="20%"></td> <td Width="20%"> 资源时长: </td> <td> <input type="text" name="timelength" Width="80%"> </td> </tr> <tr> <td Width="20%"></td> <td Width="20%"> 上传文件: </td> <td> <input type="file" name="myFile" Width="80%"> </td> </tr> <tr> <td Width="20%"></td> <td Width="20%"></td> <td> <input type="reset" value="!清空内容"> <input type="submit" value="上传"> </td> </tr> </table> </s:form>
package com.su.action;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
public class VideoManageAction extends ActionSupport {
private String title;
private String timelength;
private File myFile;
private String myFileFileName;
public File getMyFile() {
return myFile;
}
public void setMyFile(File myFile) {
this.myFile = myFile;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getTimelength() {
return timelength;
}
public void setTimelength(String timelength) {
this.timelength = timelength;
}
public void setMyFileFileName(String myFileFileName) {
this.myFileFileName = myFileFileName;
}
public String getMyFileFileName() {
return myFileFileName;
}
public String execute() throws Exception {
InputStream is = new FileInputStream(myFile);
String uploadPath = ServletActionContext.getServletContext()
.getRealPath("/upload");
File file = new File(uploadPath);
if (!file.exists()) {
file.mkdir();
}
File toFile = new File(uploadPath, this.getMyFileFileName());
OutputStream os = new FileOutputStream(toFile);
byte[] buffer = new byte[1024];
int length = 0;
while ((length = is.read(buffer)) > 0) {
os.write(buffer, 0, length);
}
is.close();
os.close();
System.out.println(this.getTimelength()+"\n"+this.getTitle()+"\n"+this.getMyFileFileName());
return SUCCESS;
}
}
其实struts2做文件上传够简单的.
===========================================================================
Android客户端就不好做了 其实就是做一个类 里面封装一些浏览器的特性,做一些浏览器的事情
MainActivity.java
package cn.itcast.uploaddata;
import java.io.File;
import java.util.HashMap;
import java.util.Map;
import cn.itcast.net.HttpRequest;
import cn.itcast.utils.FormFile;
import cn.itcast.utils.SocketHttpRequester;
import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class MainActivity extends Activity {
private static final String TAG = "MainActivity";
private EditText timelengthText;
private EditText titleText;
private EditText videoText;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button button = (Button) this.findViewById(R.id.button);
timelengthText = (EditText) this.findViewById(R.id.timelength);
videoText = (EditText) this.findViewById(R.id.video);
titleText = (EditText) this.findViewById(R.id.title);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String title = titleText.getText().toString();
String timelength = timelengthText.getText().toString();
Map<String, String> params = new HashMap<String, String>();
//params.put("method", "save");
params.put("title", title);
params.put("timelength", timelength);
try {
// HttpRequest.sendGetRequest("http://192.168.1.100:8080/videoweb/video/manage.do", params, "UTF-8");
File uploadFile = new File(Environment.getExternalStorageDirectory(), videoText.getText().toString());
FormFile formfile = new FormFile("02.mp3", uploadFile, "myFile",null);
SocketHttpRequester.post("http://10.1.27.35:8080/VideoWeb2/upload.action", params, formfile);
Toast.makeText(MainActivity.this, R.string.success, 1).show();
} catch (Exception e) {
Toast.makeText(MainActivity.this, R.string.error, 1).show();
Log.e(TAG, e.toString());
}
}
});
}
}
HttpRequest.java这就是那个模拟浏览器动作的核心了,感谢黎老师的教程了呵呵,自己写不出了 但是自己用就可以了(下篇也有提到)
package cn.itcast.net;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.xmlpull.v1.XmlPullParser;
import android.util.Xml;
import cn.itcast.utils.StreamTool;
public class HttpRequest {
public static boolean sendXML(String path, String xml)throws Exception{
byte[] data = xml.getBytes();
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection)url.openConnection();
conn.setRequestMethod("POST");
conn.setConnectTimeout(5 * 1000);
conn.setDoOutput(true);//如果通过post提交数据，必须设置允许对外输出数据
conn.setRequestProperty("Content-Type", "text/xml; charset=UTF-8");
conn.setRequestProperty("Content-Length", String.valueOf(data.length));
OutputStream outStream = conn.getOutputStream();
outStream.write(data);
outStream.flush();
outStream.close();
if(conn.getResponseCode()==200){
return true;
}
return false;
}
public static boolean sendGetRequest(String path, Map<String, String> params, String enc) throws Exception{
StringBuilder sb = new StringBuilder(path);
sb.append('?');
// ?method=save&title=435435435&timelength=89&
for(Map.Entry<String, String> entry : params.entrySet()){
sb.append(entry.getKey()).append('=')
.append(URLEncoder.encode(entry.getValue(), enc)).append('&');
}
sb.deleteCharAt(sb.length()-1);
URL url = new URL(sb.toString());
HttpURLConnection conn = (HttpURLConnection)url.openConnection();
conn.setRequestMethod("GET");
conn.setConnectTimeout(5 * 1000);
if(conn.getResponseCode()==200){
return true;
}
return false;
}
public static boolean sendPostRequest(String path, Map<String, String> params, String enc) throws Exception{
// title=dsfdsf&timelength=23&method=save
StringBuilder sb = new StringBuilder();
if(params!=null && !params.isEmpty()){
for(Map.Entry<String, String> entry : params.entrySet()){
sb.append(entry.getKey()).append('=')
.append(URLEncoder.encode(entry.getValue(), enc)).append('&');
}
sb.deleteCharAt(sb.length()-1);
}
byte[] entitydata = sb.toString().getBytes();//得到实体的二进制数据
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection)url.openConnection();
conn.setRequestMethod("POST");
conn.setConnectTimeout(5 * 1000);
conn.setDoOutput(true);//如果通过post提交数据，必须设置允许对外输出数据
//Content-Type: application/x-www-form-urlencoded
//Content-Length: 38
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
conn.setRequestProperty("Content-Length", String.valueOf(entitydata.length));
OutputStream outStream = conn.getOutputStream();
outStream.write(entitydata);
outStream.flush();
outStream.close();
if(conn.getResponseCode()==200){
return true;
}
return false;
}
//SSL HTTPS Cookie
public static boolean sendRequestFromHttpClient(String path, Map<String, String> params, String enc) throws Exception{
List<NameValuePair> paramPairs = new ArrayList<NameValuePair>();
if(params!=null && !params.isEmpty()){
for(Map.Entry<String, String> entry : params.entrySet()){
paramPairs.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
}
}
UrlEncodedFormEntity entitydata = new UrlEncodedFormEntity(paramPairs, enc);//得到经过编码过后的实体数据
HttpPost post = new HttpPost(path); //form
post.setEntity(entitydata);
DefaultHttpClient client = new DefaultHttpClient(); //浏览器
HttpResponse response = client.execute(post);//执行请求
if(response.getStatusLine().getStatusCode()==200){
return true;
}
return false;
}
}
FromFile.java辅助类
package cn.itcast.utils;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
/**
* 上传文件
*/
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;
}
}
SocketHttpRequester.java这个是Socket的服务类
package cn.itcast.utils;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.InetAddress;
import java.net.Socket;
import java.net.URL;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
public class SocketHttpRequester {
/**
* 发送xml数据
* @param path 请求地址
* @param xml xml数据
* @param encoding 编码
* @return
* @throws Exception
*/
public static byte[] postXml(String path, String xml, String encoding) throws Exception{
byte[] data = xml.getBytes(encoding);
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection)url.openConnection();
conn.setRequestMethod("POST");
conn.setDoOutput(true);
conn.setRequestProperty("Content-Type", "text/xml; charset="+ encoding);
conn.setRequestProperty("Content-Length", String.valueOf(data.length));
conn.setConnectTimeout(5 * 1000);
OutputStream outStream = conn.getOutputStream();
outStream.write(data);
outStream.flush();
outStream.close();
if(conn.getResponseCode()==200){
return readStream(conn.getInputStream());
}
return null;
}
/**
* 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://192.168.0.200:8080/ssi/fileload/test.do" 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.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[] 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;
}
/**
* 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});
}
/**
* 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 encode 编码
*/
public static byte[] postFromHttpClient(String path, Map<String, String> params, String encode) throws Exception{
List<NameValuePair> formparams = new ArrayList<NameValuePair>();//用于存放请求参数
for(Map.Entry<String, String> entry : params.entrySet()){
formparams.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
}
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formparams, encode);
HttpPost httppost = new HttpPost(path);
httppost.setEntity(entity);
HttpClient httpclient = new DefaultHttpClient();//看作是浏览器
HttpResponse response = httpclient.execute(httppost);//发送post请求
return readStream(response.getEntity().getContent());
}
/**
* 发送请求
* @param path 请求路径
* @param params 请求参数 key为参数名称 value为参数值
* @param encode 请求参数的编码
*/
public static byte[] post(String path, Map<String, String> params, String encode) throws Exception{
//String params = "method=save&name="+ URLEncoder.encode("老毕", "UTF-8")+ "&age=28&";//需要发送的参数
StringBuilder parambuilder = new StringBuilder("");
if(params!=null && !params.isEmpty()){
for(Map.Entry<String, String> entry : params.entrySet()){
parambuilder.append(entry.getKey()).append("=")
.append(URLEncoder.encode(entry.getValue(), encode)).append("&");
}
parambuilder.deleteCharAt(parambuilder.length()-1);
}
byte[] data = parambuilder.toString().getBytes();
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection)url.openConnection();
conn.setDoOutput(true);//允许对外发送请求参数
conn.setUseCaches(false);//不进行缓存
conn.setConnectTimeout(5 * 1000);
conn.setRequestMethod("POST");
//下面设置http请求头
conn.setRequestProperty("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, */*");
conn.setRequestProperty("Accept-Language", "zh-CN");
conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.2; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)");
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
conn.setRequestProperty("Content-Length", String.valueOf(data.length));
conn.setRequestProperty("Connection", "Keep-Alive");
//发送参数
DataOutputStream outStream = new DataOutputStream(conn.getOutputStream());
outStream.write(data);//把参数发送出去
outStream.flush();
outStream.close();
if(conn.getResponseCode()==200){
return readStream(conn.getInputStream());
}
return null;
}
/**
* 读取流
* @param inStream
* @return 字节数组
* @throws Exception
*/
public static byte[] readStream(InputStream inStream) throws Exception{
ByteArrayOutputStream outSteam = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len = -1;
while( (len=inStream.read(buffer)) != -1){
outSteam.write(buffer, 0, len);
}
outSteam.close();
inStream.close();
return outSteam.toByteArray();
}
}
StreamTool.java
package cn.itcast.utils;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
public class StreamTool {
/**
* 从输入流读取数据
* @param inStream
* @return
* @throws Exception
*/
public static byte[] readInputStream(InputStream inStream) throws Exception{
ByteArrayOutputStream outSteam = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len = 0;
while( (len = inStream.read(buffer)) !=-1 ){
outSteam.write(buffer, 0, len);
}
outSteam.close();
inStream.close();
return outSteam.toByteArray();
}
}
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本教程将探讨如何通过集成Struts2框架在Java后端实现Android客户端的图片上传功能。首先，我们需要了解Android客户端的文件操作以及如何使用HTTP请求将数据发送到服务器。 在Android客户端，我们通常使用`Intent`来...
Struts2、Android和HttpClient是三个关键的技术领域，它们在本次文件上传的场景中相互结合。Struts2是一个流行的Java Web框架，用于构建MVC（模型-视图-控制器）结构的应用程序。Android是Google开发的移动操作系统...
在Android应用开发中，文件上传是一项常见的功能，通常用于用户分享图片、文档等信息到服务器。Struts2作为Java Web框架，提供了处理文件上传的能力。本篇将详细讲解如何实现Android客户端上传文件以及Struts2服务端...
在服务端接收文件时，Struts2可以使用`FileUploadInterceptor`或自定义Action来处理文件上传。开发者需要配置Struts2的XML配置文件，指定允许上传的文件类型、大小限制等。 服务端的关键步骤包括： 1. 检查请求：...
在Android应用开发中，有时需要将用户选择的多个文件上传到服务器进行处理或存储，而Struts2作为一款流行的Java Web框架，常被用于构建后端服务。本篇将详细介绍如何实现从Android客户端向Struts2服务器端上传多个...
本文将详细解析如何在Android系统中实现文件上传，主要围绕"Android文件上传"这一主题展开，结合提供的博客链接以及压缩包内的示例代码（test和struts2fileupload）进行说明。 首先，理解文件上传的基本流程至关...
这里提到的是使用Struts2框架在服务端进行文件接收的场景，而Android客户端则负责发起文件上传请求。Struts2是一个流行的Java web框架，它提供了一套完整的MVC（Model-View-Controller）架构，便于开发和维护Web应用...
综上所述，"android和tomcat文件上传和数据交互"这个主题涵盖了Android客户端开发、网络编程、文件操作、Struts2框架的使用、Tomcat服务器配置、以及JSON或XML数据交换等多个技术点。在实际项目中，开发者需要熟练...
这个教程的第五部分应该是讲解如何在开心网应用中实现用户注册、文件上传以及针对触摸屏设备的优化，主要涉及的技术栈包括前端的ExtJS、移动端的Android开发以及后端的SSH框架（可能是Spring Security和Struts2+...
本人也是新手，这个代码是参考的网上代码自己修改写的，能实现android客户端向struts上传文件功能，用的是HttpURLConnection,注意设置请求头的编码为“utf-8",能解决文件名是中文的问题，不然会报错，rg.apache....
- Struts2通过`struts2-core`库中的`FileUploadInterceptor`拦截器实现了文件上传功能。这个拦截器负责解析请求中的多部分（multipart）内容，将上传的文件从HTTP请求中分离出来。 - 要实现文件上传，首先需要在...
一、Android端实现文件上传 1)、新建一个Android项目命名为androidUpload，目录结构如下： 2)、新建FormFile类，用来封装文件信息 package com.ljq.utils; import java.io.File; import java.io.FileInputStream...
Struts2 是一款基于 Model-View-Controller (MVC) 设计模式的开源Java Web...在实际项目中，还需要深入学习Struts2的拦截器链、自定义拦截器、结果类型、数据校验、文件上传下载等高级特性，以便更好地适应复杂的需求。
在"struts-2.3.33-all.zip"压缩包中，"apps"文件夹可能包含了用于演示或测试目的的应用程序实例，这些应用展示了如何在Struts 2框架中实现文件上传。在实际开发中，通常会有一个或多个Action类负责接收和处理文件...
4. **JavaBean编程**：JavaBean的语法、设计与开发，以及DAO（Data Access Object）设计模式，Smartupload组件用于文件上传。 5. **Servlet**：讲解了Servlet的基本结构、生命周期，以及MVC（Model-View-Controller...
总的来说，房屋管理系统通过Struts框架实现了高效的web应用开发，为用户提供了一个方便、安全的房屋信息发布和出租平台。其背后涉及的技术包括MVC架构、数据库管理、用户认证、支付接口集成等多个方面，展示了IT技术...
- 文件上传、表单验证等高级特性。 - **Hibernate4** - ORM (Object Relational Mapping) 概念。 - Hibernate 的基本使用流程。 - HQL 查询语言。 - **Spring4** - Spring IoC 容器的理解与使用。 - AOP ...
- 文件上传可能导致安全问题，比如文件类型检查，防止上传恶意脚本（如PHP）。 - 数据传输应使用HTTPS，确保用户隐私不被窃取。 9. **异步处理**： - 为了提供良好的用户体验，照片上传通常在后台线程进行，避免...