SocketHttpRequester.java

package com.itap.voiceemoticon.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;

/**
 * 上传文件到服务器
 * 
 * @author Administrator
 */
public class SocketHttpRequester {
    /**
     * 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()));

        String firstLine = reader.readLine();
        String line = null;
        
        System.out.println("line -> " + firstLine);
        while ((line = reader.readLine()) != null) {
            System.out.println("line -> " + line);
        }
        
        if (firstLine.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
        });
    }
}