C#代码转JAVA

Question

C#是关于WEBSERVICE的,如何将C#代码转换成JAVA的代码,望高手指教.

Answer 1

转换的文件在附件中
using System;
using System.Web;
using System.Data;
using System.Xml;
using System.Net;
using System.IO;
using System.Text;
using System.Text.RegularExpressions;
using System.Drawing;
using System.Drawing.Imaging;
using System.Collections.Specialized;namespace CDJJ.Service.WebDAL
{
    /// <summary>
    /// QueryWeb 的摘要说明。
    /// </summary>
    public abstract class QueryBase
    {
        private static CDJJ.Service.Common.Configuration WebQuery = CDJJ.Service.Common.Configuration.Create("Config\\WebQuery.xml");        private static Regex BeRemoved = new Regex(@"\s+(?=<)|\s+$|(?<=>)\s+", RegexOptions.Compiled);
        private static RegexOptions ContentRegexOptions = RegexOptions.IgnoreCase | RegexOptions.Singleline | RegexOptions.ExplicitCapture | RegexOptions.Compiled;        private readonly static int TIMEOUT = 15000;
        private CookieContainer _cookieCon = new CookieContainer();
        private CredentialCache _credentials;        private XmlNode _currentCommand;        /// <summary>
        /// 当前Command节点
        /// </summary>
        protected XmlNode CurrentCommand
        {
            get { return this._currentCommand; }
        }        protected QueryBase(string commandType)
        {
            this._currentCommand = WebQuery.GetNode("Command[@type='" + commandType + "']");
        }        #region 处理内容
        protected DataTable GetDataTable(string patternPath, string content)
        {
            string fileName = this._currentCommand.SelectSingleNode(patternPath).InnerText;
            string pattern = PatternReader.Instance.GetPattern(fileName);            //解析
            DataTable dt = this.ParseDataTable(pattern, content);
            return dt;
        }        protected DataSet GetDataSet(string patternPath, string content)
        {
            DataTable dt = this.GetDataTable(patternPath, content);
            DataSet ds = new DataSet();
            ds.Tables.Add(dt);
            return ds;
        }

Answer 2

       #region 解析内容
        private DataTable ParseDataTable(string pattern, string content)
        {
            //解析列
            string temp = BeRemoved.Replace(pattern, "");
            Regex regex = new Regex(temp, ContentRegexOptions);
            string[] columnNames = regex.GetGroupNames();            DataTable dt = new DataTable();
            for (int i = 1; i < columnNames.Length; i++)
            {
                dt.Columns.Add(columnNames[i], typeof(String));
            }            //解析列表内容
            temp = BeRemoved.Replace(content, "");
            foreach (Match m in regex.Matches(temp))
            {
                DataRow row = dt.NewRow();
                for (int i = 1; i < columnNames.Length; i++)
                {
                    temp = Convert.ToString(m.Groups[columnNames[i]]);
                    temp = temp.Replace("&nbsp;", "");
                    row[columnNames[i]] = temp;
                }
                dt.Rows.Add(row);
            }
            return dt;
        }
        #endregion
        #endregion        #region 处理图片
        protected byte[] ProcessPicture(bool png, int destWidth, int destHeight, byte[] srcBytes)
        {
            System.Drawing.Image img = null;
            System.Drawing.Bitmap bmp = null;            try
            {
                //设置缩略图大小
                img = System.Drawing.Image.FromStream(new System.IO.MemoryStream(srcBytes));
                int srcWidth = img.Width;
                int srcHeight = img.Height;                ImageFormat destFormat = img.RawFormat;                if (img.RawFormat.Equals(ImageFormat.Png)
                    && srcWidth <= destWidth && srcHeight <= destHeight)
                {
                    return srcBytes;
                }
                //如果原始图片是Gif，且宽和高都小于指定的宽和高，则保持图像不变。
                else if (img.RawFormat.Equals(ImageFormat.Gif)
                    && !png
                    && srcWidth <= destWidth && srcHeight <= destHeight)
                {
                    return srcBytes;
                }
                else
                {
                    if (srcWidth <= destWidth)
                    {
                        destWidth = srcWidth;
                    }
                    if (srcHeight <= destHeight)
                    {
                        destHeight = srcHeight;
                    }                    //计算目标图片和原始图片的宽和高的比率
                    double destRate = destWidth * 1.0 / destHeight;
                    double srcRate = srcWidth * 1.0 / srcHeight;                    if (srcRate > destRate)
                    {
                        destHeight = (int)(destWidth / srcRate);
                    }
                    else if (srcRate < destRate)
                    {
                        destWidth = (int)(destHeight * srcRate);
                    }                    if (png)
                    {
                        destFormat = ImageFormat.Png;
                    }
                    else if (!img.RawFormat.Equals(ImageFormat.Gif) && !img.RawFormat.Equals(ImageFormat.Png))
                    {
                        //原始图片是gif或png，则保持格式不变，其它情况目标格式定为jpeg。
                        destFormat = ImageFormat.Jpeg;
                    }
                    //生成缩略图
                    bmp = new Bitmap(destWidth, destHeight);
                    System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bmp);
                    g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
                    g.DrawImage(img, new Rectangle(0, 0, destWidth, destHeight), new Rectangle(0, 0, srcWidth, srcHeight), System.Drawing.GraphicsUnit.Pixel);
                    //使用八叉树进行颜色量化
                    if (!destFormat.Equals(ImageFormat.Jpeg))
                    {
                        OctreeQuantizer quantizer = new OctreeQuantizer(255, 5);
                        img = quantizer.Quantize(bmp);
                    }
                    else
                    {
                        img = bmp;
                    }                    //保存图片返回字节流
                    System.IO.MemoryStream ms = new System.IO.MemoryStream();
                    img.Save(ms, destFormat);                    byte[] bytes = ms.GetBuffer();
                    return bytes;
                }
            }

Answer 3

     finally
            {
                if (img != null)
                {
                    img.Dispose();
                }                if (bmp != null)
                {
                    bmp.Dispose();
                }
            }
        }
        #endregion        #region 获取Web内容
        protected string GetPageContent(string url)
        {
            return this.GetPageContent(url, null);
        }        protected string GetPageContent(string url, string param)
        {
            StringBuilder ret = new StringBuilder(500);
            HttpWebResponse response = null;            try
            {
                Uri uri = new Uri(url);
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);                request.Headers.Add("Accept-Language: zh-cn");
                request.Timeout = TIMEOUT;
                request.AllowAutoRedirect = true;
                request.CookieContainer = _cookieCon;                if (_credentials != null)
                {
                    request.PreAuthenticate = true;
                    request.Credentials = _credentials;
                }                //传入POST参数的分析
                if (!string.IsNullOrEmpty(param))
                {
                    request.Method = "POST";
                    request.ContentType = "application/x-www-form-urlencoded";                    string temp = this.EncodeParams(param, System.Text.Encoding.Default);
                    byte[] bytes = Encoding.UTF8.GetBytes(temp);
                    request.ContentLength = bytes.Length;
                    Stream rspStream = request.GetRequestStream();
                    rspStream.Write(bytes, 0, bytes.Length);
                    rspStream.Close();
                }
                else
                {
                    request.ContentLength = 0;
                }                //取得请求后返回的的数据
                response = (HttpWebResponse)(request.GetResponse());                Stream stream = response.GetResponseStream();                using (StreamReader sr = new StreamReader(stream, System.Text.Encoding.Default))
                {
                    Char[] read = new Char[256];
                    int count = sr.Read(read, 0, 256);
                    while (count > 0)
                    {
                        ret.Append(read, 0, count);
                        count = sr.Read(read, 0, 256);
                    }
                }                return ret.ToString();
            }
            catch (Exception er)
            {
                string err = er.ToString();
                throw;
            }
            finally
            {
                if (response != null)
                {
                    response.Close();
                }
            }
        }        protected byte[] GetFileContent(string url)
        {
            WebResponse response = null;
            byte[] bytes = null;            try
            {
                Uri uri = new Uri(url);
                WebRequest request = WebRequest.Create(uri);                response = request.GetResponse();
                Stream stream = response.GetResponseStream();                using (MemoryStream ms = new MemoryStream())
                {
                    int b;
                    while ((b = stream.ReadByte()) != -1)
                    {
                        ms.WriteByte((byte)b);
                    }
                    bytes = ms.ToArray();
                }
                
                return bytes;
            }
            finally
            {
                if (response != null)
                {
                    response.Close();
                }
            }
        }        private string EncodeParams(string param, Encoding enc)
        {
            StringBuilder ret = new StringBuilder();
            char[] reserved = { '?', '=', '&', '%', '+' };            if (param != null)
            {
                int i = 0, j;
                while (i < param.Length)
                {
                    j = param.IndexOfAny(reserved, i);
                    if (j == -1)
                    {
                        ret.Append(HttpUtility.UrlEncode(param.Substring(i, param.Length - i), enc));
                        break;
                    }
                    ret.Append(HttpUtility.UrlEncode(param.Substring(i, j - i), enc));
                    ret.Append(param.Substring(j, 1));
                    i = j + 1;
                }
            }            return ret.ToString();
        }
        #endregion
    }
}