新下载安装的tomcat,在webapps目录下创建了一个新的文件夹first,文件夹下创建WEB—INF文件夹,在WEB-INF文件夹下创建了classes文件夹和web.xml文件。
在classes文件夹下创建了我的包app01a,编译MyServlet.java文件
package app01a;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.Servlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebServlet;
public class MyServlet implements Servlet{
private transient ServletConfig servletConfig;
public void init(ServletConfig sc) throws ServletException{
servletConfig = sc;
}
public ServletConfig getServletConfig(){
return servletConfig;
}
public String getServletInfo(){
return "MyServlet";
}
public void service(ServletRequest request, ServletResponse response)
throws ServletException, IOException{
String servletName = servletConfig.getServletName();
response.setContentType("html/text");
PrintWriter pw = response.getWriter();
pw.print("<html><body>Hello From" + servletName +"</body><html>");
}
public void destroy(){}
}
在web.xml文件中添加
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0"
metadata-complete="true">
<><servlet>
<servlet-name>MyServlet</servlet-name>
<servlet-class>app01a.MyServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>MyServlet</servlet-name>
<url-pattern>/MyServlet</url-pattern>
</servlet-mapping>
</web-app>
然后
就是不能启动。
在调试过程中就是如果web.xml为
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0"
metadata-complete="true">
</web-app>
是可以启动的。请问我应该怎么设置??
看一下tomcat 日志 catalina_home/logs/catalina.out,会有报错信息
据我分析,web.xml里