http上传文件到网络核心代码
2012-01-09 20:24
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客户端为：android：uploadDataToWeb
服务端为：servlet：videoWeb
服务器端的jsp页面如下：
<%@ 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>Insert title here</title>
</head>
<body>
<form method="post" action="http://192.168.40.99:80/videoweb/video/manage.do" enctype="multipart/form-data">
视频名称：<input type="text" name="title"><br/>
时长：<input type="text" name="timelength"><br/>
<input type="file" name="video"/>
<input type="hidden" name="method" value="save"/>
<input type="submit" value="提交"/>
</form>
</body>
</html>
FormFile类作为数据的封装类，是一个javabean，代码如下：
/**
* 上传文件，封装数据用的
*/
public class FormFile {
/* 上传文件的数据 */
/*-----------------------------7dc17181501ce
Content-Disposition: form-data; name="video"; filename="1279011770335.jpg"
Content-Type: image/pjpeg*/
/* 请求参数名称*/
private byte[] data;//文件数据
private InputStream inStream;
private File file;//上传的文件1279011770335.jpg
/* 文件名称 */
private String filname;//filename其实文件名称可以从file获取到
private String parameterName;//video
/* 内容类型 */
private String contentType = "application/octet-stream";
//2个构造器
//上传小文件
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;
}
//上传大文件，一边读数据一边上传，避免内存溢出
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类里面包装了核心的上传的代码：
/**
* 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");
// \"为转义字符“
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; //重点
System.out.println("数据总长度为------------dataLength: "+dataLength);
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;
}
android的MainActivity页面：
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(title, uploadFile, "video", "audio/mpeg");
SocketHttpRequester.post("http://192.168.40.99:80/videoweb/video/manage.do", 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());
}
}
});
}
}
本文出自 “Android” 博客，请务必保留此出处http://donv082303.blog.51cto.com/2161296/760700
服务端为：servlet：videoWeb
服务器端的jsp页面如下：
<%@ 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>Insert title here</title>
</head>
<body>
<form method="post" action="http://192.168.40.99:80/videoweb/video/manage.do" enctype="multipart/form-data">
视频名称：<input type="text" name="title"><br/>
时长：<input type="text" name="timelength"><br/>
<input type="file" name="video"/>
<input type="hidden" name="method" value="save"/>
<input type="submit" value="提交"/>
</form>
</body>
</html>
FormFile类作为数据的封装类，是一个javabean，代码如下：
/**
* 上传文件，封装数据用的
*/
public class FormFile {
/* 上传文件的数据 */
/*-----------------------------7dc17181501ce
Content-Disposition: form-data; name="video"; filename="1279011770335.jpg"
Content-Type: image/pjpeg*/
/* 请求参数名称*/
private byte[] data;//文件数据
private InputStream inStream;
private File file;//上传的文件1279011770335.jpg
/* 文件名称 */
private String filname;//filename其实文件名称可以从file获取到
private String parameterName;//video
/* 内容类型 */
private String contentType = "application/octet-stream";
//2个构造器
//上传小文件
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;
}
//上传大文件，一边读数据一边上传，避免内存溢出
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类里面包装了核心的上传的代码：
/**
* 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");
// \"为转义字符“
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; //重点
System.out.println("数据总长度为------------dataLength: "+dataLength);
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;
}
android的MainActivity页面：
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(title, uploadFile, "video", "audio/mpeg");
SocketHttpRequester.post("http://192.168.40.99:80/videoweb/video/manage.do", 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());
}
}
});
}
}
本文出自 “Android” 博客，请务必保留此出处http://donv082303.blog.51cto.com/2161296/760700
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