formfile文件上传使用示例

package tools;
import java.io.bufferedreader;
import java.io.file;
import java.io.fileinputstream;
import java.io.filenotfoundexception;
import java.io.inputstream;
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 android.util.log;

/**
 * 上传的文件
 */
public class formfile {
    private final static string logkey = "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";

    /**
     *
     * @param filname
     *            文件名称
     * @param data
     *            上传的文件数据
     * @param parametername
     *            参数
     * @param contenttype
     *            内容类型
     */
    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;
    }

    /**
     *
     * @param filname
     *            文件名
     * @param file
     *            上传的文件
     * @param parametername
     *            参数
     * @param contenttype
     *            内容内容类型
     */
    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;
    }
    private string opertype=null;
    public void setoper(string opertype){
        this.opertype=opertype;
    }
    public boolean post(string path, map<string, string> params)
            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;
        // 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=\""
                + getparametername() + "\";filename=\"" + getfilname()
                + "\"\r\n");
        fileexplain.append("content-type: " + getcontenttype() + "\r\n\r\n");
        fileexplain.append("\r\n");
        filedatalength += fileexplain.length();
        if (getinstream() != null) {
            filedatalength += getfile().length();
        } else {
            filedatalength += 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");
        }
        log.v(logkey, textentity.tostring());
        // 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);
        log.v(logkey, url.tostring());
        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()+"?"+opertype + " http/1.1\r\n";
        log.v(logkey, requestmethod);
        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

        stringbuilder fileentity = new stringbuilder();
        fileentity.append("--");
        fileentity.append(boundary);
        fileentity.append("\r\n");
        fileentity.append("content-disposition: form-data;name=\""
                + getparametername() + "\";filename=\"" + getfilname()
                + "\"\r\n");
        fileentity.append("content-type: " + getcontenttype() + "\r\n\r\n");
        outstream.write(fileentity.tostring().getbytes());
        if (getinstream() != null) {
            byte[] buffer = new byte[1024];
            int len = 0;
            while ((len = getinstream().read(buffer, 0, 1024)) != -1) {
                outstream.write(buffer, 0, len);
            }
            getinstream().close();
        } else {
            outstream.write(getdata(), 0, 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;
    }
}
//测试代码
file iconfile = new file("file路径");
string url="htttp://192.168.1.101:8080/app/initservlet";
map<string, string> map = new hashmap<string, string>();//表单内容
map.put("name","blog");

if (iconfile != null) {
                    formfile uploadfile = new formfile(iconfile.getname(),
                            iconfile, "iconfile", "image/jpeg");
                    uploadfile.setoper("action=insertusr");//在url上插入?action=insertusr
                    try {
                        boolean isok = uploadfile.post(url, map);
                    } catch (exception e) {
                        // todo auto-generated catch block
                        e.printstacktrace();
                    }