问题描述

java web无法调用含有@WebServlet("")的java方法

我想问一下，我这样要怎么才能调用src里包里的java方法？

web.xml:

 <?xml version=""1.0"" encoding=""UTF-8""?><web-app xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance"" xmlns=""http://java.sun.com/xml/ns/javaee"" xmlns:web=""http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"" xsi:schemaLocation=""http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"" version=""2.5""  metadata-complete=""true"">  <welcome-file-list>    <welcome-file>index.jsp</welcome-file>  </welcome-file-list>  <listener>    <listener-class>（省略包名）.utils.StatisticsContextListener</listener-class>  </listener>  <filter>    <filter-name>charsetfileter</filter-name>    <filter-class>（省略包名）.utils.CharSetFilter</filter-class>  </filter>  <filter-mapping>    <filter-name>charsetfileter</filter-name>    <url-pattern>/*</url-pattern>  </filter-mapping></web-app>

charsetfilter.java:

 public class CharSetFilter implements Filter {    public void destroy() {    }    public void doFilter(ServletRequest request ServletResponse response            FilterChain chain) throws IOException ServletException {        request.setCharacterEncoding(""utf-8"");        response.setCharacterEncoding(""utf-8"");        response.setContentType(""text/html;charset=UTF-8"");        chain.doFilter(request response);    }    public void init(FilterConfig arg0) throws ServletException {        System.out.println(""init"");    }}

想调用的方法：
AskShopInfo.java:

 @WebServlet(""/AskShopInfo"")public class AskShopInfo extends HttpServlet {    private static final long serialVersionUID = 1L;    protected void doGet(HttpServletRequest request HttpServletResponse response) throws ServletException IOException {        System.out.println(""AskShopInfo"");    }    protected void doPost(HttpServletRequest request HttpServletResponse response) throws ServletException IOException {        System.out.println(""AskShopInfo"");        doGet(request response);    }}

解决方案

正常来说你直接用@WebServlet注解的话，直接访问这个注解的地址即http://localhost:8080/ProjectName/AskShopInfo就能访问这个servlet了。
如果不能访问，检查下tomcate的版本，@WebServlet注解是Servlet3.0的新特性，只有tomcat 7.0.X 支持Servlet 3.0。
注解的详解，参考:http://blog.csdn.net/xiazdong/article/details/7208316

解决方案二：
java 调用web服务的方法
JAVA 调用Web Service的方法
JAVA 调用Web Service的方法