Java 通过servlet运行时未找到文件异常
您好,我是java新手,所以面对一些问题,我从一个html页面中访问servlet,它从不同的类调用不同的方法,但是在从servlet执行类的方法时,它抛出了文件not found exception。但是所有内容都在正确的路径中。当单独运行类的方法时,它的工作状态良好,但从servlet来看,它不是Java 通过servlet运行时未找到文件异常,java,servlets,filenotfoundexception,Java,Servlets,Filenotfoundexception,您好,我是java新手,所以面对一些问题,我从一个html页面中访问servlet,它从不同的类调用不同的方法,但是在从servlet执行类的方法时,它抛出了文件not found exception。但是所有内容都在正确的路径中。当单独运行类的方法时,它的工作状态良好,但从servlet来看,它不是 SEVERE: Servlet.service() for servlet [Search] in context with path [/AutomationTest] threw except
SEVERE: Servlet.service() for servlet [Search] in context with path [/AutomationTest] threw exception
java.io.FileNotFoundException: WebContent\prop\html.txt (The system cannot find the path specified)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(Unknown Source)
at java.io.FileReader.<init>(Unknown Source)
at com.helix.etl.automation.dao.test.read(test.java:24)
at com.helix.etl.automation.controller.Search.doGet(Search.java:45)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:957)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:620)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
SEVERE:Servlet.service()在路径为[/AutomationTest]的上下文中为Servlet[Search]抛出异常
java.io.FileNotFoundException:WebContent\prop\html.txt(系统找不到指定的路径)
在java.io.FileInputStream.open(本机方法)
位于java.io.FileInputStream。(未知源)
位于java.io.FileReader。(未知源)
位于com.helix.etl.automation.dao.test.read(test.java:24)
位于com.helix.etl.automation.controller.Search.doGet(Search.java:45)
位于javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
位于javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
位于org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
位于org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
位于org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
位于org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
位于org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
位于org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
位于org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
位于org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:957)
位于org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
位于org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423)
位于org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079)
位于org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:620)
位于org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)
位于java.util.concurrent.ThreadPoolExecutor$Worker.runTask(未知源)
位于java.util.concurrent.ThreadPoolExecutor$Worker.run(未知源)
位于org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
位于java.lang.Thread.run(未知源)
我的test.java
public class test {
//String filenaame="WebContent/prop/html.txt";
/*public static void main(String[] args) throws IOException{
test t= new test();
t.read(filenaame);
}*/
String line="";
public List<String> read(String filename) throws IOException
{
File file =new File(filename);
FileReader fi = new FileReader(file);
BufferedReader in = new BufferedReader(fi);
List<String> tokens = new ArrayList<String>();
while((line=in.readLine())!=null){
tokens.add(line);
System.out.println("entering");
}
return tokens;
}
公共类测试{
//字符串filenaame=“WebContent/prop/html.txt”;
/*公共静态void main(字符串[]args)引发IOException{
测试t=新测试();
t、 读取(文件名);
}*/
字符串行=”;
公共列表读取(字符串文件名)引发IOException
{
文件=新文件(文件名);
FileReader fi=新的FileReader(文件);
BufferedReader in=新的BufferedReader(fi);
List tokens=new ArrayList();
而((line=in.readLine())!=null){
代币。添加(行);
系统输出打印项次(“输入”);
}
归还代币;
}
我的servlet
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
String Filename="WebContent/prop/html.txt";
test t = new test();
List<String> line=t.read(Filename);
for (String s : line) {
System.out.println(s);
out.print(s);}
}
public void doGet(HttpServletRequest请求,HttpServletResponse响应)
抛出ServletException,IOException{
response.setContentType(“text/html”);
PrintWriter out=response.getWriter();
字符串Filename=“WebContent/prop/html.txt”;
测试t=新测试();
列表行=t.read(文件名);
for(字符串s:行){
系统输出打印项次;
打印出来;}
}
您好,您可以与从html到Sevlet的流程共享您的代码吗?您的应用程序上下文中是否有prop/html.txt文件?您的测试类正在读取此文件,但文件不在那里。如果我单独运行测试类,它运行良好。但通过servlet,它不是WebContent,而是您项目中的某个位置或本地位置在项目中,使用request.getContextPath()作为相对于项目目录的位置。但是我需要它来运行方法调用