高手帮帮忙，马上要解决的问题，头好疼？

2008-05-26 10:20:08 238 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

f103vet6 SD卡SDIO+DMA配置避坑指南：从初始化卡死到稳定读写的全流程解析本文详细解析STM32F103VET6芯片SD卡SDIO与DMA配置中的常见问题，从初始化卡死到读写不稳定的全流程解决方案。重点分析总线宽度配置、时钟分频调整及DMA通道管理技巧，帮助开发者避开常见陷阱，实现稳定高效的数据存储。阅读详情

public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding("gbk");
response.setCharacterEncoding("gbk");
response.setContentType("text/html");
PrintWriter out = response.getWriter();

out
.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
String filePath = new String(request.getParameter("path"));
String firstTitleId = request.getParameter("firstTitleId");
secondFile = new File(filePath);
secondFileReader = new FileReader(secondFile);
br = new BufferedReader(secondFileReader);// 包装成缓冲字符读取流
String chars = br.readLine();
while (chars != null) {
out.println(chars);
chars = br.readLine();
out.println("<br>");
}
// 构建返回超连接
out.println("<a href='" + request.getContextPath()
+ "/newspre.jsp?parentId=" + firstTitleId + "'>返回</a>");
out.println();
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}

以上抛出的异常：
2008-5-26 22:14:03 org.apache.catalina.core.AprLifecycleListener init
信息: The Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\MyEclipse 6.1 Blue Edition - Milestone 1\bin;C:\Program Files\MyEclipse 6.1 Blue Edition - Milestone 1\myeclipse\eclipse\plugins\com.genuitec.eclipse.easie.tomcat.myeclipse_6.0.2.zmyeclipse60300200802\tomcat\bin
2008-5-26 22:14:03 org.apache.coyote.http11.Http11Protocol init
信息: Initializing Coyote HTTP/1.1 on http-8080
2008-5-26 22:14:03 org.apache.catalina.startup.Catalina load
信息: Initialization processed in 705 ms
2008-5-26 22:14:03 org.apache.catalina.core.StandardService start
信息: Starting service Catalina
2008-5-26 22:14:03 org.apache.catalina.core.StandardEngine start
信息: Starting Servlet Engine: Apache Tomcat/6.0.13
2008-5-26 22:14:03 org.apache.coyote.http11.Http11Protocol start
信息: Starting Coyote HTTP/1.1 on http-8080
2008-5-26 22:14:03 org.apache.jk.common.ChannelSocket init
信息: JK: ajp13 listening on /0.0.0.0:8009
2008-5-26 22:14:03 org.apache.jk.server.JkMain start
信息: Jk running ID=0 time=0/31 config=null
2008-5-26 22:14:03 org.apache.catalina.startup.Catalina start
信息: Server startup in 778 ms
2008-5-26 22:14:20 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet SecondTitleDetail threw exception
java.io.FileNotFoundException: D:\????????\news1.txt (系统找不到指定的路径。)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(Unknown Source)
at java.io.FileReader.<init>(Unknown Source)
at com.news.view.SecondTitleDetail.doGet(SecondTitleDetail.java:71)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Unknown Source)

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