目录：
- 前言
- 开发环境
- 知识点
- 初始使用
- 自定义工具栏
- 设置和读取编辑器内容
- 文件上传
- ueditor加水印
------------------------------------------------
下载地址在尾部
1.前言：之前一直用KingEditor富文本编辑器,在国产编辑器中算是顶尖的插件。但是这个编辑器集成度较差，也很久没有更新了，今天学习百度产品UEeditor使用！
2.开发环境：VS2013+MVC5
3.知识点：上传加水印功能
各自选择自己语言的版本。我这里是.net版本就选择.net版本 UTF-8
同时可以选择Mini版本，Mini版本在日常也是够用的。开发版功能比较齐全，包括在线编辑WORD,地图，图表等功能。如果是普通的，比如博客类的，回复类使用的，使用mini版比较何时。
4.初次开始：
新建MVC5项目名为UEeditorForMVC，并解压下载的ueditor到Script文件夹下，utf8-net改名为UEeditor
初始部署使用：修改index.cshtml
@{
ViewBag.Title = "Home Page";
}
<script src="~/Scripts/ueditor/ueditor.config.js"></script>
<script src="~/Scripts/ueditor/ueditor.all.min.js"></script>
<script>
//加载编辑器
var ue = UE.getEditor(‘container‘, {
});
</script>
<script id="container" name="content" style=" height: 228px; " type="text/plain">
</script>
运行后出现效果，证明配置已经成功！
5.配置工具栏
有时候我们需要自定义工具栏，2个地方可以进行配置，一个是全局的配置文件ueitor.config.js,修改这个文件将导致整站所有编辑器一并修改
单独配置在加载编辑器时候触发：
<script>
//加载编辑器
var ue = UE.getEditor(‘container‘, {
toolbars: [[
‘fullscreen‘, ‘source‘,
‘bold‘, ‘italic‘, ‘underline‘, ‘forecolor‘, ‘insertorderedlist‘,
‘fontfamily‘, ‘fontsize‘,
‘justifyleft‘, ‘justifycenter‘,
‘link‘, ‘unlink‘,
‘simpleupload‘, ‘snapscreen‘
]]
});
</script>
这个加载可以发现与config.js是对应的。包括接口路径，主题等，都可以单独配置
效果如下，我只配置了最常用的工具栏
6.设置和读取编辑器内容
ue.ready(function() {
//设置编辑器的内容
ue.setContent(‘hello‘);
//获取html内容，返回: <p>hello</p>
var html = ue.getContent();
//获取纯文本内容，返回: hello
var txt = ue.getContentTxt();
});
可以设置编辑器的内容。比如文章可以获取后调用
ue.setContent(‘hello‘);为编辑器设置内容
7.文件上传
文件上传是本文的主要内容,我们必须了解一下接口。
controller.ashx 这是一个处理文件，继承IHttpHandler接口。所有文件的上传必须经过这个文件处理
App_Code文件夹下的UploadHandler.cs为上传处理文件。
执行顺序由controller.ashx判断处理后调用UploadHandler。
初始上传会成功，但是没有图片显示
这是因为路径文件造成
研究发现net根目录下有文件config.json。这个是一个json格式的配置文件
这里可以配置所有上传时候的参数包括，上传路径，文件命名，远程抓取路径等
我们这里只修改第11行代码即可
"imageUrlPrefix": "/Scripts/ueditor/net/", /* 图片访问路径前缀 */
修改上传路径：在62行
8.加入水印
既然我们知道修改文件为上传文件，那么修改上传处理逻辑可以加入水印
添加一个水印类
using System;
using System.Web;
using System.Drawing;
using System.Drawing.Imaging;
using System.Drawing.Drawing2D;
using System.IO;
public class WaterMark
{
/// <summary>
/// 图片水印
/// </summary>
/// <param name="imgPath">服务器图片相对路径</param>
/// <param name="filename">保存文件名</param>
/// <param name="watermarkFilename">水印文件相对路径</param>
/// <param name="watermarkStatus">图片水印位置 0=不使用 1=左上 2=中上 3=右上 4=左中 9=右下</param>
/// <param name="quality">附加水印图片质量,0-100</param>
/// <param name="watermarkTransparency">水印的透明度 1--10 10为不透明</param>
public static void AddImageSignPic(string imgPath, string filename, string watermarkFilename, int watermarkStatus, int quality, int watermarkTransparency)
{
if(!File.Exists(imgPath))
return;
byte[] _ImageBytes = File.ReadAllBytes(imgPath);
Image img = Image.FromStream(new System.IO.MemoryStream(_ImageBytes));
watermarkFilename = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, watermarkFilename);
if (!File.Exists(watermarkFilename))
return;
Graphics g = Graphics.FromImage(img);
//设置高质量插值法
//g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
//设置高质量,低速度呈现平滑程度
//g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
Image watermark = new Bitmap(watermarkFilename);
if (watermark.Height >= img.Height || watermark.Width >= img.Width)
return;
ImageAttributes imageAttributes = new ImageAttributes();
ColorMap colorMap = new ColorMap();
colorMap.OldColor = Color.FromArgb(255, 0, 255, 0);
colorMap.NewColor = Color.FromArgb(0, 0, 0, 0);
ColorMap[] remapTable = { colorMap };
imageAttributes.SetRemapTable(remapTable, ColorAdjustType.Bitmap);
float transparency = 0.5F;
if (watermarkTransparency >= 1 && watermarkTransparency <= 10)
transparency = (watermarkTransparency / 10.0F);
float[][] colorMatrixElements = {
new float[] {1.0f, 0.0f, 0.0f, 0.0f, 0.0f},
new float[] {0.0f, 1.0f, 0.0f, 0.0f, 0.0f},
new float[] {0.0f, 0.0f, 1.0f, 0.0f, 0.0f},
new float[] {0.0f, 0.0f, 0.0f, transparency, 0.0f},
new float[] {0.0f, 0.0f, 0.0f, 0.0f, 1.0f}
};
ColorMatrix colorMatrix = new ColorMatrix(colorMatrixElements);
imageAttributes.SetColorMatrix(colorMatrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap);
int xpos = 0;
int ypos = 0;
switch (watermarkStatus)
{
case 1:
xpos = (int)(img.Width * (float).01);
ypos = (int)(img.Height * (float).01);
break;
case 2:
xpos = (int)((img.Width * (float).50) - (watermark.Width / 2));
ypos = (int)(img.Height * (float).01);
break;
case 3:
xpos = (int)((img.Width * (float).99) - (watermark.Width));
ypos = (int)(img.Height * (float).01);
break;
case 4:
xpos = (int)(img.Width * (float).01);
ypos = (int)((img.Height * (float).50) - (watermark.Height / 2));
break;
case 5:
xpos = (int)((img.Width * (float).50) - (watermark.Width / 2));
ypos = (int)((img.Height * (float).50) - (watermark.Height / 2));
break;
case 6:
xpos = (int)((img.Width * (float).99) - (watermark.Width));
ypos = (int)((img.Height * (float).50) - (watermark.Height / 2));
break;
case 7:
xpos = (int)(img.Width * (float).01);
ypos = (int)((img.Height * (float).99) - watermark.Height);
break;
case 8:
xpos = (int)((img.Width * (float).50) - (watermark.Width / 2));
ypos = (int)((img.Height * (float).99) - watermark.Height);
break;
case 9:
xpos = (int)((img.Width * (float).99) - (watermark.Width));
ypos = (int)((img.Height * (float).99) - watermark.Height);
break;
}
g.DrawImage(watermark, new Rectangle(xpos, ypos, watermark.Width, watermark.Height), 0, 0, watermark.Width, watermark.Height, GraphicsUnit.Pixel, imageAttributes);
ImageCodecInfo[] codecs = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo ici = null;
foreach (ImageCodecInfo codec in codecs)
{
if (codec.MimeType.IndexOf("jpeg") > -1)
ici = codec;
}
EncoderParameters encoderParams = new EncoderParameters();
long[] qualityParam = new long[1];
if (quality < 0 || quality > 100)
quality = 80;
qualityParam[0] = quality;
EncoderParameter encoderParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, qualityParam);
encoderParams.Param[0] = encoderParam;
if (ici != null)
img.Save(filename, ici, encoderParams);
else
img.Save(filename);
g.Dispose();
img.Dispose();
watermark.Dispose();
imageAttributes.Dispose();
}
/// <summary>
/// 文字水印
/// </summary>
/// <param name="imgPath">服务器图片相对路径</param>
/// <param name="filename">保存文件名</param>
/// <param name="watermarkText">水印文字</param>
/// <param name="watermarkStatus">图片水印位置 0=不使用 1=左上 2=中上 3=右上 4=左中 9=右下</param>
/// <param name="quality">附加水印图片质量,0-100</param>
/// <param name="fontname">字体</param>
/// <param name="fontsize">字体大小</param>
public static void AddImageSignText(string imgPath, string filename, string watermarkText, int watermarkStatus, int quality, string fontname, int fontsize)
{
byte[] _ImageBytes = File.ReadAllBytes(imgPath);
Image img = Image.FromStream(new System.IO.MemoryStream(_ImageBytes));
Graphics g = Graphics.FromImage(img);
Font drawFont = new Font(fontname, fontsize, FontStyle.Regular, GraphicsUnit.Pixel);
SizeF crSize;
crSize = g.MeasureString(watermarkText, drawFont);
float xpos = 0;
float ypos = 0;
switch (watermarkStatus)
{
case 1:
xpos = (float)img.Width * (float).01;
ypos = (float)img.Height * (float).01;
break;
case 2:
xpos = ((float)img.Width * (float).50) - (crSize.Width / 2);
ypos = (float)img.Height * (float).01;
break;
case 3:
xpos = ((float)img.Width * (float).99) - crSize.Width;
ypos = (float)img.Height * (float).01;
break;
case 4:
xpos = (float)img.Width * (float).01;
ypos = ((float)img.Height * (float).50) - (crSize.Height / 2);
break;
case 5:
xpos = ((float)img.Width * (float).50) - (crSize.Width / 2);
ypos = ((float)img.Height * (float).50) - (crSize.Height / 2);
break;
case 6:
xpos = ((float)img.Width * (float).99) - crSize.Width;
ypos = ((float)img.Height * (float).50) - (crSize.Height / 2);
break;
case 7:
xpos = (float)img.Width * (float).01;
ypos = ((float)img.Height * (float).99) - crSize.Height;
break;
case 8:
xpos = ((float)img.Width * (float).50) - (crSize.Width / 2);
ypos = ((float)img.Height * (float).99) - crSize.Height;
break;
case 9:
xpos = ((float)img.Width * (float).99) - crSize.Width;
ypos = ((float)img.Height * (float).99) - crSize.Height;
break;
}
g.DrawString(watermarkText, drawFont, new SolidBrush(Color.White), xpos + 1, ypos + 1);
g.DrawString(watermarkText, drawFont, new SolidBrush(Color.Black), xpos, ypos);
ImageCodecInfo[] codecs = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo ici = null;
foreach (ImageCodecInfo codec in codecs)
{
if (codec.MimeType.IndexOf("jpeg") > -1)
ici = codec;
}
EncoderParameters encoderParams = new EncoderParameters();
long[] qualityParam = new long[1];
if (quality < 0 || quality > 100)
quality = 80;
qualityParam[0] = quality;
EncoderParameter encoderParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, qualityParam);
encoderParams.Param[0] = encoderParam;
if (ici != null)
img.Save(filename, ici, encoderParams);
else
img.Save(filename);
g.Dispose();
img.Dispose();
}
/// <summary>
/// 返回文件扩展名，不含“.”
/// </summary>
/// <param name="_filepath">文件全名称</param>
/// <returns>string</returns>
public static string GetFileExt(string _filepath)
{
if (string.IsNullOrEmpty(_filepath))
{
return "";
}
if (_filepath.LastIndexOf(".") > 0)
{
return _filepath.Substring(_filepath.LastIndexOf(".") + 1); //文件扩展名，不含“.”
}
return "";
}
public static string GetRamCode()
{
return DateTime.Now.ToString("yyyyMMddHHmmssffff");
}
}
WaterMark.cs
/// <summary>
/// 文字水印
/// </summary>
/// <param name="imgPath">服务器图片相对路径</param>
/// <param name="filename">保存文件名</param>
/// <param name="watermarkText">水印文字</param>
/// <param name="watermarkStatus">图片水印位置 0=不使用 1=左上 2=中上 3=右上 4=左中 9=右下</param>
/// <param name="quality">附加水印图片质量,0-100</param>
/// <param name="fontname">字体</param>
/// <param name="fontsize">字体大小</param>
AddImageSignPic方法参数解析
这样我们修改自带的UploadHandler.cs第68行try方法为
try
{
if (!Directory.Exists(Path.GetDirectoryName(localPath)))
{
Directory.CreateDirectory(Path.GetDirectoryName(localPath));
}
file.SaveAs(localPath);
WaterMark.AddImageSignText(localPath, localPath,
"ymnets", 9,
80, "Tahoma", 12);
//WaterMark.AddImageSignPic(serverFileName, serverFileName,
// "传入水印图片路径", 9,
// 80, 5);
Result.Url = savePath;
Result.State = UploadState.Success;
}
保存后调用写水印函数，完整的
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;
using System.Web;
/// <summary>
/// UploadHandler 的摘要说明
/// </summary>
public class UploadHandler : Handler
{
public UploadConfig UploadConfig { get; private set; }
public UploadResult Result { get; private set; }
public UploadHandler(HttpContext context, UploadConfig config)
: base(context)
{
this.UploadConfig = config;
this.Result = new UploadResult() { State = UploadState.Unknown };
}
public override void Process()
{
byte[] uploadFileBytes = null;
string uploadFileName = null;
if (UploadConfig.Base64)
{
uploadFileName = UploadConfig.Base64Filename;
uploadFileBytes = Convert.FromBase64String(Request[UploadConfig.UploadFieldName]);
}
else
{
var file = Request.Files[UploadConfig.UploadFieldName];
uploadFileName = file.FileName;
if (!CheckFileType(uploadFileName))
{
Result.State = UploadState.TypeNotAllow;
WriteResult();
return;
}
if (!CheckFileSize(file.ContentLength))
{
Result.State = UploadState.SizeLimitExceed;
WriteResult();
return;
}
uploadFileBytes = new byte[file.ContentLength];
try
{
file.InputStream.Read(uploadFileBytes, 0, file.ContentLength);
}
catch (Exception)
{
Result.State = UploadState.NetworkError;
WriteResult();
}
Result.OriginFileName = uploadFileName;
var savePath = PathFormatter.Format(uploadFileName, UploadConfig.PathFormat);
var localPath = Server.MapPath(savePath);
try
{
if (!Directory.Exists(Path.GetDirectoryName(localPath)))
{
Directory.CreateDirectory(Path.GetDirectoryName(localPath));
}
file.SaveAs(localPath);
WaterMark.AddImageSignText(localPath, localPath,
"ymnets", 9,
80, "Tahoma", 12);
//WaterMark.AddImageSignPic(serverFileName, serverFileName,
// "传入水印图片路径", 9,
// 80, 5);
Result.Url = savePath;
Result.State = UploadState.Success;
}
catch (Exception e)
{
Result.State = UploadState.FileAccessError;
Result.ErrorMessage = e.Message;
}
finally
{
WriteResult();
}
}
}
private void WriteResult()
{
this.WriteJson(new
{
state = GetStateMessage(Result.State),
url = Result.Url,
title = Result.OriginFileName,
original = Result.OriginFileName,
error = Result.ErrorMessage
});
}
private string GetStateMessage(UploadState state)
{
switch (state)
{
case UploadState.Success:
return "SUCCESS";
case UploadState.FileAccessError:
return "文件访问出错，请检查写入权限";
case UploadState.SizeLimitExceed:
return "文件大小超出服务器限制";
case UploadState.TypeNotAllow:
return "不允许的文件格式";
case UploadState.NetworkError:
return "网络错误";
}
return "未知错误";
}
private bool CheckFileType(string filename)
{
var fileExtension = Path.GetExtension(filename).ToLower();
return UploadConfig.AllowExtensions.Select(x => x.ToLower()).Contains(fileExtension);
}
private bool CheckFileSize(int size)
{
return size < UploadConfig.SizeLimit;
}
}
public class UploadConfig
{
/// <summary>
/// 文件命名规则
/// </summary>
public string PathFormat { get; set; }
/// <summary>
/// 上传表单域名称
/// </summary>
public string UploadFieldName { get; set; }
/// <summary>
/// 上传大小限制
/// </summary>
public int SizeLimit { get; set; }
/// <summary>
/// 上传允许的文件格式
/// </summary>
public string[] AllowExtensions { get; set; }
/// <summary>
/// 文件是否以 Base64 的形式上传
/// </summary>
public bool Base64 { get; set; }
/// <summary>
/// Base64 字符串所表示的文件名
/// </summary>
public string Base64Filename { get; set; }
}
public class UploadResult
{
public UploadState State { get; set; }
public string Url { get; set; }
public string OriginFileName { get; set; }
public string ErrorMessage { get; set; }
}
public enum UploadState
{
Success = 0,
SizeLimitExceed = -1,
TypeNotAllow = -2,
FileAccessError = -3,
NetworkError = -4,
Unknown = 1,
}
UploadHandler
这次我们再次上传预览效果
成功生成一个文字水印。这个水印类也包含了图片LOGO形式的
WaterMark.AddImageSignPic(serverFileName, serverFileName,
"传入水印图片路径", 9,
80, 5);
注掉文字的替换这句：
我下载了博客园的LOGO，那么结果显然
模糊度和图片透明度都有关系.
文章内容到此结束，如果有关于ueditor的疑问欢迎留言！更多高级功能请访问官方网站
时间： 2024-10-28 10:44:21