全部的错误信息: java.net.SocketException: Connection reset by peer: socket write error at java.net.SocketOutputStream.socketWrite0(Native Method) at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92) at java.net.SocketOutputStream.write(SocketOutputStream.java:136) at org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:750) at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:432) at org.apache.coyote.http11.InternalOutputBuffer.flush(InternalOutputBuffer.java:305) at org.apache.coyote.http11.Http11Processor.action(Http11Processor.java:997) at org.apache.coyote.Response.action(Response.java:183) at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:322) at org.apache.catalina.connector.OutputBuffer.flush(OutputBuffer.java:293) at org.apache.catalina.connector.CoyoteOutputStream.flush(CoyoteOutputStream.java:98) at javax.imageio.stream.FileCacheImageOutputStream.close(FileCacheImageOutputStream.java:213) at javax.imageio.ImageIO.write(ImageIO.java:1567) at org.apache.jsp.image_jsp._jspService(image_jsp.java:101) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98) at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265) at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875) at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528) at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689) at java.lang.Thread.run(Thread.java:619)
java.net.SocketException: Connection reset by peer: socket write error
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
at org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:750)
at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:432)
at org.apache.coyote.http11.InternalOutputBuffer.flush(InternalOutputBuffer.java:305)
at org.apache.coyote.http11.Http11Processor.action(Http11Processor.java:997)
at org.apache.coyote.Response.action(Response.java:183)
at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:322)
at org.apache.catalina.connector.OutputBuffer.flush(OutputBuffer.java:293)
at org.apache.catalina.connector.CoyoteOutputStream.flush(CoyoteOutputStream.java:98)
at javax.imageio.stream.FileCacheImageOutputStream.close(FileCacheImageOutputStream.java:213)
at javax.imageio.ImageIO.write(ImageIO.java:1567)
at org.apache.jsp.image_jsp._jspService(image_jsp.java:101)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Thread.java:619)
大家有遇到过这样的问题。
在网上查了一下,“同一页面加载了两次”会出现这个问题。
难道是因为加载了两次生成验证码的jsp造成的吗?
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.util.Random;import javax.imageio.ImageIO;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;public class ValidateCodeServlet extends HttpServlet{
private static final long serialVersionUID = 1L; //验证码图片的宽度。
private int width=80;
//验证码图片的高度。
private int height=24;
//验证码字符个数
private int codeCount=4;
private int x=0;
//字体高度
private int fontHeight;
private int codeY; char[] codeSequence = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J',
'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
'X', 'Y', 'Z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' }; /**
* 初始化验证图片属性
*/
public void init() throws ServletException
{
//从web.xml中获取初始信息
//宽度
String strWidth=this.getInitParameter("width");
//高度
String strHeight=this.getInitParameter("height");
//字符个数
String strCodeCount=this.getInitParameter("codeCount"); //将配置的信息转换成数值
try
{
if(strWidth!=null && strWidth.length()!=0)
{
width=Integer.parseInt(strWidth);
}
if(strHeight!=null && strHeight.length()!=0)
{
height=Integer.parseInt(strHeight);
}
if(strCodeCount!=null && strCodeCount.length()!=0)
{
codeCount=Integer.parseInt(strCodeCount);
}
}
catch(NumberFormatException e)
{} x=width/(codeCount+1);
fontHeight=height-2;
codeY=height-4; } protected void service(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, java.io.IOException { //定义图像buffer
BufferedImage buffImg = new BufferedImage(
width, height,BufferedImage.TYPE_INT_RGB);
Graphics2D g = buffImg.createGraphics(); //创建一个随机数生成器类
Random random = new Random(); //将图像填充为白色
g.setColor(Color.WHITE);
g.fillRect(0, 0, width, height); //创建字体,字体的大小应该根据图片的高度来定。
Font font = new Font("Fixedsys", Font.PLAIN, fontHeight);
//设置字体。
g.setFont(font); //画边框。
g.setColor(Color.BLACK);
g.drawRect(0, 0, width - 1, height - 1); //随机产生20条干扰线,使图象中的认证码不易被其它程序探测到。
g.setColor(Color.BLACK);
for(int i = 0; i < 20; i++)
{
int x = random.nextInt(width);
int y = random.nextInt(height);
int xl = random.nextInt(12);
int yl = random.nextInt(12);
g.drawLine(x, y, x + xl, y + yl);
} //randomCode用于保存随机产生的验证码,以便用户登录后进行验证。
StringBuffer randomCode = new StringBuffer();
int red = 0, green = 0, blue = 0; //随机产生codeCount数字的验证码。
for (int i = 0; i < codeCount; i++) {
//得到随机产生的验证码数字。
String strRand = String.valueOf(codeSequence[random.nextInt(36)]);
//产生随机的颜色分量来构造颜色值,这样输出的每位数字的颜色值都将不同。
red = random.nextInt(255);
green = random.nextInt(255);
blue = random.nextInt(255); //用随机产生的颜色将验证码绘制到图像中。
g.setColor(new Color(red, green, blue));
g.drawString(strRand, i * x, codeY); //将产生的四个随机数组合在一起。
randomCode.append(strRand);
}
// 将四位数字的验证码保存到Session中。
HttpSession session = req.getSession();
session.setAttribute("validateCode", randomCode.toString()); // 禁止图像缓存。
resp.setHeader("Pragma", "no-cache");
resp.setHeader("Cache-Control", "no-cache");
resp.setDateHeader("Expires", 0); resp.setContentType("image/jpeg"); //将图像输出到Servlet输出流中。
ServletOutputStream sos = resp.getOutputStream();
ImageIO.write(buffImg, "jpeg", sos);
sos.close();
}
}
web.xml配置
<servlet>
<servlet-name>ValidateCodeServlet</servlet-name>
<servlet-class>com.shaneall.web.ValidateCodeServlet</servlet-class>
<init-param>
<param-name>width</param-name>
<param-value>80</param-value>
</init-param>
<init-param>
<param-name>height</param-name>
<param-value>24</param-value>
</init-param>
<init-param>
<param-name>codeCount</param-name>
<param-value>4</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>ValidateCodeServlet</servlet-name>
<url-pattern>/validateCodeServlet</url-pattern>
</servlet-mapping>页面
<input class="validateText loginText" type="text" name="logincode" id="logincode"/><img class="validateImg" src="/validateCodeServlet" alt="看不清楚?点击换一张。" id="validatePicture" onclick="refresh();"><br class="clear"/>function refresh(){
$("#validatePicture").attr("src","/validateCodeServlet?ts="+new Date());
$("#logincode").focus();
}
就可以了...这是我在公司中的一个项目中的做法,你可以去用用看.....
www.wxmkl.com 去看看,点击那个积分兑换,那个验证码我用上面那上传的代码做的.....