HTTP Status 404 - Servlet TestJSP is not available解决方法
日期：2014-05-17 浏览次数：20687 次
HTTP Status 404 - Servlet TestJSP is not available
HTTP Status 404 - Servlet TestJSP is not available
--------------------------------------------
type Status report
message Servlet TestJSP is not available
description The requested resource (Servlet TestJSP is not available) is not available.
以上是出现的问题。
案例是当访问者输入姓名后，单击“提交”按钮，将返回一句话。
创建过程：
1.在tomcat安装目录下的webapps目录下，新建ch02文件夹；
2.打开记事本，在ch02文件夹下编写一个Servlet类，用来获取请求中某个参数的值。其代码如下：
package ch02;
import java.io.*;
import java.io.PrintWriter;
import javax.servlet.*;
import javax.servlet.http.*;
public class Test extends HttpServlet
{
public void doGet (HttpServletRequest request,HttpServletResponse response) throws
ServletException,IOException
{
String name=request.getParameter("name");
String SuccessInfo="Congratulate you,your JSP environment of configure have Successed!"+name;
response.setContentType("text/html");
PrintWriter out =response.getWriter();
out.println(" <html>");
out.println(" <head>");
out.println(" <title>");
out.println("SuccessPage");
out.println(" </title>");
out.println(" </head>");
out.println(" <body>");
out.println("SuccessInfo");
out.println(" </body>");
out.println(" </html>");
out.close();
}
public void doPost(HttpServletRequest request,HttpServletResponse response) throws
ServletException,IOException
{
doGet(request,response);
}
}
将上述文件另存为Test.java，打开命令提示符窗口，切换到该目录下并编译该文件。
4.在ch02文件夹下新建一个文件夹WEB-INF，在里面新建一个web.xml，代码如下：
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_5.xsd"
version="2.5">
<servlet>
<servlet-name>TestJSP </servlet-name>
<servlet-class>ch02.Test </servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>TestJSP </servlet-name>
<url-pattern>/first </url-pattern>
</servlet-mapping>
</web-app>
5.编写一个HTML页面，success.html,代码如下
<html>
<body>
<form action="first" method="post">
请输入您的姓名： <input type ="text" name="name"> <p>
HTTP Status 404 - Servlet TestJSP is not available
--------------------------------------------
type Status report
message Servlet TestJSP is not available
description The requested resource (Servlet TestJSP is not available) is not available.
以上是出现的问题。
案例是当访问者输入姓名后，单击“提交”按钮，将返回一句话。
创建过程：
1.在tomcat安装目录下的webapps目录下，新建ch02文件夹；
2.打开记事本，在ch02文件夹下编写一个Servlet类，用来获取请求中某个参数的值。其代码如下：
package ch02;
import java.io.*;
import java.io.PrintWriter;
import javax.servlet.*;
import javax.servlet.http.*;
public class Test extends HttpServlet
{
public void doGet (HttpServletRequest request,HttpServletResponse response) throws
ServletException,IOException
{
String name=request.getParameter("name");
String SuccessInfo="Congratulate you,your JSP environment of configure have Successed!"+name;
response.setContentType("text/html");
PrintWriter out =response.getWriter();
out.println(" <html>");
out.println(" <head>");
out.println(" <title>");
out.println("SuccessPage");
out.println(" </title>");
out.println(" </head>");
out.println(" <body>");
out.println("SuccessInfo");
out.println(" </body>");
out.println(" </html>");
out.close();
}
public void doPost(HttpServletRequest request,HttpServletResponse response) throws
ServletException,IOException
{
doGet(request,response);
}
}
将上述文件另存为Test.java，打开命令提示符窗口，切换到该目录下并编译该文件。
4.在ch02文件夹下新建一个文件夹WEB-INF，在里面新建一个web.xml，代码如下：
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_5.xsd"
version="2.5">
<servlet>
<servlet-name>TestJSP </servlet-name>
<servlet-class>ch02.Test </servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>TestJSP </servlet-name>
<url-pattern>/first </url-pattern>
</servlet-mapping>
</web-app>
5.编写一个HTML页面，success.html,代码如下
<html>
<body>
<form action="first" method="post">
请输入您的姓名： <input type ="text" name="name"> <p>
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