java 采用socket模拟HTTP协议发送文件到服务器

/**

采用JAVA的socket模拟HTTP请求发送文件，希望对大家有帮助！！！

@auther zhaojie

@since 2014-6-22 02:44:12

*/

package com.fileupload.bean;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.Socket;
import java.net.UnknownHostException;

public class TestClient {
public static void main(String[] args) throws UnknownHostException, IOException {
uploadFile("127.0.0.1", 8080, "E:/dd.pdf", "/HttpProtot/servlet/aa.servlet", "fileName", "sss.bin", "7d00013333");
}
/**
*
*
* */
public static void uploadFile(String host,Integer port,String fileAbsoPath,String servletName,String fileparaName,String fileName,String boundary) {
FileInputStream fin = null;
OutputStream out = null;
InputStream in = null;
try{
Socket socket = new Socket(host,port);
socket.setTcpNoDelay(true);
socket.setKeepAlive(true);
socket.setSoTimeout(100000000);
File f = new File(fileAbsoPath);//需要上传的文件
fin = new FileInputStream(f);
StringBuffer fileBefore = new StringBuffer();
///fileBefore：文件上传的头信息
fileBefore.append("--").append(boundary).append("\r\n");
fileBefore.append("Content-Disposition:form-data; name=\""+fileparaName+"\"; filename=\""+fileName+"\"").append("\r\n");
fileBefore.append("Content-Type: application/octet-stream").append("\r\n");
fileBefore.append("\r\n");
//文件上传完之后的尾部信息
String end = new String("\r\n--"+boundary+"--");
//参数长度
long length=f.length()+fileBefore.toString().getBytes().length+end.getBytes().length;
out = socket.getOutputStream();
StringBuffer header = new StringBuffer();
//headre:http请求头信息

//
header.append("POST "+servletName+" HTTP/1.1").append("\r\n");
header.append("Host:"+host+":"+port+"").append("\r\n");
header.append("Accept:text/html, application/xhtml+xml, */*").append("\r\n");
header.append("Accept-Language:zh-CN").append("\r\n");
header.append("Content-Type:multipart/form-data; boundary="+boundary).append("\r\n");
header.append("Content-Length:").append(length).append("\r\n");
header.append("Connection:Keep-Alive").append("\r\n");
header.append("\r\n");
//报文结构:

//第一部分：组装http头部信息
out.write(header.toString().getBytes());
//第二部分：组装文件头部信息
out.write(fileBefore.toString().getBytes());
//第三部分：组装文件信息
byte b[]=new byte[1024];
int rb = 0;
while((rb = fin.read(b))!=-1){
out.write(b,0,rb);
};
fin.close();
//组装文件尾部信息
out.write(end.getBytes());
out.flush();
//服务器返回信息
in = socket.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String line =null;
while((line=br.readLine())!=null){
System.out.println(line);
}
br.close();
}
catch (Exception e) {
e.printStackTrace();
}
finally {
try {
if (fin != null) {
fin.close();
}
} catch (Exception ee) {
ee.printStackTrace();
}
try {
if (out != null) {
out.close();
}
} catch (Exception ee) {
ee.printStackTrace();
}
try {
if (in != null) {
in.close();
}
} catch (Exception ee) {
ee.printStackTrace();
}
}

}

}