获取的图片地址乱码解决，但是保存的图片乱码怎么解决？在线等，求大神，解决，速结贴

package com.togest.emis.modules.resource.web;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.codec.binary.Base64;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import com.togest.emis.framework.utils.EncodeUtils;

/**

@author mmk
*
*/
@Controller
public class PsaveController {
@RequestMapping(value="save",method = RequestMethod.POST)
public void save(Map map,HttpServletRequest request,HttpServletResponse response) throws IOException{
String imageData2 = request.getParameter("imageData2");
String file_path = request.getParameter("file_path");
file_path = URLDecoder.decode(file_path , "utf-8");
System.out.println("++++++++++++++++"+file_path);
//String f = new String(request.getParameter("file_path").getBytes("ISO-8859-1"),"UTF-8");
//System.out.println("+++++++++++++++++"+f);
String file_name = request.getParameter("file_name");
String Path = request.getSession().getServletContext().getRealPath("/");
String filePath2 = file_path.substring(0, 34);
String filePath=file_path.replace(filePath2,Path);
filePath =EncodeUtils.isoDecode(filePath);
String fileName=file_name;
File file = new File(filePath);
System.out.println("+++++++"+filePath);
//System.out.println("+++++++++"+EncodeUtils.isoDecode(filePath));
if(imageData2!=null){
try{
FileOutputStream write = new FileOutputStream(file);
byte[] decoderBytes = Base64.decodeBase64(imageData2.replace("data:image/png;base64,",""));
imageData2 = imageData2.replace("base64,","");
write.write(decoderBytes);
write.flush();
write.close();
```
        }catch(Exception e){
            e.printStackTrace();

        }
```
}
}
}
保存控制器代码
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ include file="/common/taglibs.jsp"%>
<!DOCTYPE html>

href="${pageContext.request.contextPath}/system/css/wColorPicker.css" />

href="${pageContext.request.contextPath}/system/css/wPaint.css" />

        <td colspan="2">
            <div>
                <div id="box"></div>
                <input type="button" value="保存" onClick="saveImage2()"
                    onblur="saveImage2()" /> <input type="button" value="提交"
                    onblur="saveImage2()" onclick="saveImage2()"> <input
                    type="button" value="全屏" onclick="full_screen()">
            </div> <br />
        </td>
    </tr>
</table>

<br />
<br />

<script type="text/javascript">
    $(document).ready(function() {
        //alert('${filePath}');
        ///alert('${ctx}/fileupload/download_file_url?fileDir=${filePath}');
  $('#canvasImage3').attr('src','${ctx}/fileupload/download_file_url?fileDir=${filePath}');
    });
    function saveImage2() {
        var imageData2 = $("#wPaint2").wPaint("image");//获取wPaint的image属性值可获取base64格式的图片数据
        var file_path = encodeURI(document.getElementById("canvasImage3").src);//这个获取乱码
         file_path  =  encodeURI(file_path);
        var file_name = document.getElementById("canvasImage3").name;
        alert(file_path);
        $.ajax({
            url : '${ctx}/save',
            type : 'post',
            data : {
                imageData2 : imageData2,
                file_path  : file_path,
                file_name  : file_name

            },
            dataType : "json",
            success : function(result) {
                alert(result);
                if ("ture" == $.trim(result)) {
                    $("#box").html("保存成功");
                } else {
                    $("#box").html("保存失败");
                }
            },
            error : function() {
                $("#box").html("保存成功");
            }
        });
        //$("#canvasImage2").attr('src', imageData2);

    }
    function convertCanvasToImage(canvas) {
        var image = new Image();

        image.src = canvas.toDataURL("image/png");

        return image;

    }
    var flag = false; //控制小图

    function DrawImage(ImgD) {
        var image = new Image();
        image.src = ImgD.src;
        if (image.width > 1620 || image.height > 1200) {
            image.width = 1620;
            image.height = 1200;
        }
        $("#wPaint2").css({
            width : image.width,
            height : image.height
        });
        $("#wPaint2").wPaint({
            menuOrientation : 'vertical',
            imageBg : image.src
        });

    }
    function full_screen() {
        var full = document.getElementById("full");
        requestFullScreen(full);

    }
    function requestFullScreen(element) {
        var requestMethod = element.requestFullScreen
                || element.webkitRequestFullScreen
                || element.mozRequestFullScreen
                || element.msRequestFullScreen;
        if (requestMethod) {
            requestMethod.call(element);
        } else if (typeof window.ActiveXObject !== "undefined") {
            var wscript = new ActiveXObject("WScript.Shell");
            if (wscript !== null) {
                wscript.SendKeys("{F11}");
            }
        }
    }
</script>

编辑页面如下

style="position:relative; width:1620px;height:1200px;background:#CACACA; border:solid black 1px;">

这是什么语言，有些看不懂

哪里乱码了，把乱码发过来看看

java.io.FileNotFoundException: D:\apache-tomcat-7.0.63-windows-x64\apache-tomcat-7.0.63\webapps\togest_emis\fileupload\download_file_url?fileDir=orgin\C2\%E7%BC%BA%E9%99%B7%E7%85%A7%E7%89%87\11b0541e834014709a5fb29ec22130840.png (系统找不到指定的路径。这是报错信息