mdd2012
墨籽迦
采纳率50%
2015-04-17 06:41 阅读 3.2k
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急!ssh项目出错Error setting value [[Ljava.lang.String;@1597a48]

5

spring:4.1.5

struts2:2.3.20

hibernate:4.3.8

spring和struts已配置验证码的action
Tomcat启动后没错误,进入到注册页面也没错误,点四位验证码更换时(如图)
图片说明
myeclipse的Console报如下错误:

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)

......

注册页面jsp:

  <tr>
        <th>
            <span class="requiredField">*</span>验证码:
        </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="点击更换验证码"/>
            </span>
        </td>
</tr>

切换验证码的js代码:

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

action代码:

 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;

/**
 * 验证码Action类
 * @author donny
 * @E-mail donnymoving@gmail.com
 * @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;

        // 步骤一 绘制一张内存中图片
        BufferedImage bufferedImage = new BufferedImage(width, height,
                BufferedImage.TYPE_INT_RGB);

        // 步骤二 图片绘制背景颜色 ---通过绘图对象
        Graphics graphics = bufferedImage.getGraphics();// 得到画图对象 --- 画笔
        // 绘制任何图形之前 都必须指定一个颜色
        graphics.setColor(getRandColor(200, 250));
        graphics.fillRect(0, 0, width, height);

        // 步骤三 绘制边框
        graphics.setColor(Color.WHITE);
        graphics.drawRect(0, 0, width - 1, height - 1);

        // 步骤四 四个随机数字
        Graphics2D graphics2d = (Graphics2D) graphics;
        // 设置输出字体
        graphics2d.setFont(new Font("宋体", Font.BOLD, 18));

         String words ="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890";

        Random random = new Random();// 生成随机数
        // 定义StringBuffer 
        StringBuffer sb = new StringBuffer();
        // 定义x坐标
        int x = 10;
        for (int i = 0; i < 4; i++) {
            // 随机颜色
            graphics2d.setColor(new Color(20 + random.nextInt(110), 20 + random
                    .nextInt(110), 20 + random.nextInt(110)));
            // 旋转 -30 --- 30度
            int jiaodu = random.nextInt(60) - 30;
            // 换算弧度
            double theta = jiaodu * Math.PI / 180;

            // 生成一个随机数字
            int index = random.nextInt(words.length()); // 生成随机数 0 到 length - 1
            // 获得字母数字
            char c = words.charAt(index);
            sb.append(c);
            // 将c 输出到图片
            graphics2d.rotate(theta, x, 20);
            graphics2d.drawString(String.valueOf(c), x, 20);
            graphics2d.rotate(-theta, x, 20);
            x += 30;
        }

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

        // 步骤五 绘制干扰线
        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);
        }

        // 将上面图片输出到浏览器 ImageIO
        graphics.dispose();// 释放资源
        ImageIO.write(bufferedImage, "jpg", ServletActionContext.getResponse()
                .getOutputStream());

        return NONE;
    }

    /**
     * 取其某一范围的color
     * 
     * @param fc
     *            int 范围参数1
     * @param bc
     *            int 范围参数2
     * @return Color
     */
    private Color getRandColor(int fc, int bc) {
        // 取其随机颜色
        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:
图片说明
没有result,因为验证码不需要跳转页面,execute()返回NONE,只起显示作用。

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5条回答 默认 最新

  • 已采纳
    u013085291 zhyu071010 2015-04-17 08:15

    话说,应该是数据类型转换不成功

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  • mdd2012 墨籽迦 2015-04-17 06:44

    注册页面提交到

    生成四位验证码的action:

     public class CheckImageAction extends ActionSupport {
    
        @Override
        public String execute() throws Exception {
            int width = 120;
            int height = 30;
    
            // 步骤一 绘制一张内存中图片
            BufferedImage bufferedImage = new BufferedImage(width, height,
                    BufferedImage.TYPE_INT_RGB);
    
            // 步骤二 图片绘制背景颜色 ---通过绘图对象
            Graphics graphics = bufferedImage.getGraphics();// 得到画图对象 --- 画笔
            // 绘制任何图形之前 都必须指定一个颜色
            graphics.setColor(getRandColor(200, 250));
            graphics.fillRect(0, 0, width, height);
    
            // 步骤三 绘制边框
            graphics.setColor(Color.WHITE);
            graphics.drawRect(0, 0, width - 1, height - 1);
    
            // 步骤四 四个随机数字
            Graphics2D graphics2d = (Graphics2D) graphics;
            // 设置输出字体
            graphics2d.setFont(new Font("宋体", Font.BOLD, 18));
    
             String words ="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890";
    
            Random random = new Random();// 生成随机数
            // 定义StringBuffer 
            StringBuffer sb = new StringBuffer();
            // 定义x坐标
            int x = 10;
            for (int i = 0; i < 4; i++) {
                // 随机颜色
                graphics2d.setColor(new Color(20 + random.nextInt(110), 20 + random
                        .nextInt(110), 20 + random.nextInt(110)));
                // 旋转 -30 --- 30度
                int jiaodu = random.nextInt(60) - 30;
                // 换算弧度
                double theta = jiaodu * Math.PI / 180;
    
                // 生成一个随机数字
                int index = random.nextInt(words.length()); // 生成随机数 0 到 length - 1
                // 获得字母数字
                char c = words.charAt(index);
                sb.append(c);
                // 将c 输出到图片
                graphics2d.rotate(theta, x, 20);
                graphics2d.drawString(String.valueOf(c), x, 20);
                graphics2d.rotate(-theta, x, 20);
                x += 30;
            }
    
            // 将生成的字母存入到session中
            ServletActionContext.getRequest().getSession().setAttribute("checkcode", sb.toString());
    
            // 步骤五 绘制干扰线
            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);
            }
    
            // 将上面图片输出到浏览器 ImageIO
            graphics.dispose();// 释放资源
            ImageIO.write(bufferedImage, "jpg", ServletActionContext.getResponse()
                    .getOutputStream());
    
            return NONE;
        }
    
        /**
         * 取其某一范围的color
         * 
         * @param fc
         *            int 范围参数1
         * @param bc
         *            int 范围参数2
         * @return Color
         */
        private Color getRandColor(int fc, int bc) {
            // 取其随机颜色
            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);
        }
    
    }
    
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  • mdd2012 墨籽迦 2015-04-17 06:47

    关键错误信息在前两三行

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  • zou493451860 zou493451860 2015-04-17 08:27

    怎么感觉你点击刷新图片的时候,进入的Action方法,跳转返回的路径跳转错了?这个应该用Ajax吧

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  • zou493451860 zou493451860 2015-04-17 08:27

    execute() 你的这个方法有返回值,你看下你的这个返回值关联的是哪个页面

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