急！ssh項目出錯Error setting value [[Ljava.lang.String;@1597a48]

spring:4.1.5

struts2:2.3.20

hibernate:4.3.8

spring和struts已配置驗證碼的action
Tomcat啟動後沒錯誤，進入到注冊頁面也沒錯誤，點四位驗證碼更換時(如圖)

myeclipse的Console報如下錯誤：

WARN OgnlValueStack:68 - Error setting value [[Ljava.lang.String;@1597a48] with expression [1429250952505]
java.lang.NumberFormatException: For input string: "1429250952505"
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Integer.parseInt(Integer.java:495)
at java.lang.Integer.valueOf(Integer.java:556)
at ognl.OgnlParserTokenManager.makeInt(OgnlParserTokenManager.java:63)
at ognl.OgnlParserTokenManager.TokenLexicalActions(OgnlParserTokenManager.java:1624)
at ognl.OgnlParserTokenManager.getNextToken(OgnlParserTokenManager.java:1498)
at ognl.OgnlParser.jj_ntk(OgnlParser.java:3099)

......

注冊頁面jsp:

  <tr>
        <th>
            <span class="requiredField">*</span>驗證碼:
        </th>
        <td>
            <span class="fieldSet">
                <input type="text" id="checkcode" name="checkcode" class="text captcha" maxlength="4" autocomplete="off"/>
                <img id="checkImage" class="captchaImage" src="${pageContext.request.contextPath}/checkImage.action" onclick="changeImage()" title="點擊更換驗證碼"/>
            </span>
        </td>
</tr>

切換驗證碼的js代碼：

 function changeImage(){
        var img = document.getElementById("checkImage");
        img.src="${pageContext.request.contextPath}/checkImage.action?" + new Date().getTime();
    }

action代碼：

 import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.util.Random;

import javax.imageio.ImageIO;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;

/**
 * 驗證碼Action類
 * @author donny
 * @E-mail [email protected]
 * @version 2015-4-17 上午12:04:16
 */
public class CheckImageAction extends ActionSupport {

    @Override
    public String execute() throws Exception {
        int width = 120;
        int height = 30;

        // 步驟一 繪制一張內存中圖片
        BufferedImage bufferedImage = new BufferedImage(width, height,
                BufferedImage.TYPE_INT_RGB);

        // 步驟二 圖片繪制背景顏色 ---通過繪圖對象
        Graphics graphics = bufferedImage.getGraphics();// 得到畫圖對象 --- 畫筆
        // 繪制任何圖形之前 都必須指定一個顏色
        graphics.setColor(getRandColor(200, 250));
        graphics.fillRect(0, 0, width, height);

        // 步驟三 繪制邊框
        graphics.setColor(Color.WHITE);
        graphics.drawRect(0, 0, width - 1, height - 1);

        // 步驟四 四個隨機數字
        Graphics2D graphics2d = (Graphics2D) graphics;
        // 設置輸出字體
        graphics2d.setFont(new Font("宋體", Font.BOLD, 18));

         String words ="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890";

        Random random = new Random();// 生成隨機數
        // 定義StringBuffer 
        StringBuffer sb = new StringBuffer();
        // 定義x坐標
        int x = 10;
        for (int i = 0; i < 4; i++) {
            // 隨機顏色
            graphics2d.setColor(new Color(20 + random.nextInt(110), 20 + random
                    .nextInt(110), 20 + random.nextInt(110)));
            // 旋轉 -30 --- 30度
            int jiaodu = random.nextInt(60) - 30;
            // 換算弧度
            double theta = jiaodu * Math.PI / 180;

            // 生成一個隨機數字
            int index = random.nextInt(words.length()); // 生成隨機數 0 到 length - 1
            // 獲得字母數字
            char c = words.charAt(index);
            sb.append(c);
            // 將c 輸出到圖片
            graphics2d.rotate(theta, x, 20);
            graphics2d.drawString(String.valueOf(c), x, 20);
            graphics2d.rotate(-theta, x, 20);
            x += 30;
        }

        // 將生成的字母存入到session中
        ServletActionContext.getRequest().getSession().setAttribute("checkcode", sb.toString());

        // 步驟五 繪制干擾線
        graphics.setColor(getRandColor(160, 200));
        int x1;
        int x2;
        int y1;
        int y2;
        for (int i = 0; i < 30; i++) {
            x1 = random.nextInt(width);
            x2 = random.nextInt(12);
            y1 = random.nextInt(height);
            y2 = random.nextInt(12);
            graphics.drawLine(x1, y1, x1 + x2, x2 + y2);
        }

        // 將上面圖片輸出到浏覽器 ImageIO
        graphics.dispose();// 釋放資源
        ImageIO.write(bufferedImage, "jpg", ServletActionContext.getResponse()
                .getOutputStream());

        return NONE;
    }

    /**
     * 取其某一范圍的color
     * 
     * @param fc
     *            int 范圍參數1
     * @param bc
     *            int 范圍參數2
     * @return Color
     */
    private Color getRandColor(int fc, int bc) {
        // 取其隨機顏色
        Random random = new Random();
        if (fc > 255) {
            fc = 255;
        }
        if (bc > 255) {
            bc = 255;
        }
        int r = fc + random.nextInt(bc - fc);
        int g = fc + random.nextInt(bc - fc);
        int b = fc + random.nextInt(bc - fc);
        return new Color(r, g, b);
    }

}

struts配置：

沒有result,因為驗證碼不需要跳轉頁面，execute()返回NONE，只起顯示作用。

最佳回答：

話說，應該是數據類型轉換不成功