import java.io.IOException;
import java.util.Enumeration;import javax.servlet.Servlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;public class HelloServlet implements Servlet { @Override
public void destroy() {
// TODO Auto-generated method stub
} @Override
public ServletConfig getServletConfig() {
// TODO Auto-generated method stub
return null;
} @Override
public String getServletInfo() {
// TODO Auto-generated method stub
return null;
} @Override
public void init(ServletConfig servletConfig) throws ServletException { System.out.println("init");
String user=servletConfig.getInitParameter("user");
System.out.println("user:"+user);
Enumeration<String> names=servletConfig.getInitParameterNames();
while(names.hasMoreElements()){
String name=names.nextElement();
String value=servletConfig.getInitParameter(name);
System.out.println("^^name:"+name+value);
}
String servletName=servletConfig.getServletName();
System.out.println(servletName);
//获取ServletContext
javax.servlet.ServletContext servletContext=servletConfig.getServletContext();
String driver= servletContext.getInitParameter("driver");
System.out.println("driver"+driver);
Enumeration<String> names2=servletContext.getInitParameterNames();
while(names2.hasMoreElements()){
String name=names2.nextElement();
System.out.println("-->"+name);
}
String realPath=servletContext.getRealPath("a.txt");
System.out.println(realPath);
String contextPath=servletContext.getContextPath();
System.out.println(contextPath);
} @Override
public void service(ServletRequest arg0, ServletResponse arg1)
throws ServletException, IOException {
// TODO Auto-generated method stub
}}
import java.util.Enumeration;import javax.servlet.Servlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;public class HelloServlet implements Servlet { @Override
public void destroy() {
// TODO Auto-generated method stub
} @Override
public ServletConfig getServletConfig() {
// TODO Auto-generated method stub
return null;
} @Override
public String getServletInfo() {
// TODO Auto-generated method stub
return null;
} @Override
public void init(ServletConfig servletConfig) throws ServletException { System.out.println("init");
String user=servletConfig.getInitParameter("user");
System.out.println("user:"+user);
Enumeration<String> names=servletConfig.getInitParameterNames();
while(names.hasMoreElements()){
String name=names.nextElement();
String value=servletConfig.getInitParameter(name);
System.out.println("^^name:"+name+value);
}
String servletName=servletConfig.getServletName();
System.out.println(servletName);
//获取ServletContext
javax.servlet.ServletContext servletContext=servletConfig.getServletContext();
String driver= servletContext.getInitParameter("driver");
System.out.println("driver"+driver);
Enumeration<String> names2=servletContext.getInitParameterNames();
while(names2.hasMoreElements()){
String name=names2.nextElement();
System.out.println("-->"+name);
}
String realPath=servletContext.getRealPath("a.txt");
System.out.println(realPath);
String contextPath=servletContext.getContextPath();
System.out.println(contextPath);
} @Override
public void service(ServletRequest arg0, ServletResponse arg1)
throws ServletException, IOException {
// TODO Auto-generated method stub
}}
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