JavaURL模式404

1 周，4 日 Questions & Answers 2174

servlet映射中的url模式有问题。我正在使用Spring3.0和带注释的控制器。我已经绘制了*。使用Spring的DispatcherServlet。我试图将@PathVariable与url-/test一起使用。do/{username}这是在抛出一个404。尝试了几次尝试和错误，但都无济于事。url模式“/”有效，但我的应用程序的其他部分已损坏（CSS、图像等）

# 1 楼答案

当使用带有向外映射扩展名（如.do、.html等）的url到spring时，所有url都将由spring处理。因此，您需要将静态资源映射到另一个URL，并使用其他servlet进行处理

示例：您的旧css将映射到http://localhost:8080/css/style.css，您的css将映射到http://localhost:8080/static/css/style.css

并为/static/*url添加servlet映射

     <!  Servlet for static resource  >
     <servlet>
        <servlet-name>static</servlet-name>
        <servlet-class>com.jegbagus.servlet.DefaultServlet</servlet-class>      
     </servlet>

    <servlet-mapping>
        <servlet-name>basic</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!  Mapper for static resource  > 
    <servlet-mapping>
        <servlet-name>static</servlet-name>
        <url-pattern>/static/*</url-pattern>
    </servlet-mapping>

并添加servlet来处理这些静态请求

package com.jegbagus.servlet;

import java.io.*;

import javax.servlet.*;
import javax.servlet.http.*;

public class DefaultServlet extends HttpServlet
{   
    private static final long serialVersionUID = 1L;

    // Tomcat, Jetty, JBoss, and GlassFish 
    private static final String COMMON_DEFAULT_SERVLET_NAME = "default";

    // Resin 
    private static final String RESIN_DEFAULT_SERVLET_NAME = "resin-file";

    // WebLogic 
    private static final String WEBLOGIC_DEFAULT_SERVLET_NAME = "FileServlet";

    // WebSphere 
    private static final String WEBSPHERE_DEFAULT_SERVLET_NAME = "SimpleFileServlet";


    public String scanDefaultServlet(){
        if(this.getServletContext().getNamedDispatcher(COMMON_DEFAULT_SERVLET_NAME) != null) {
            return COMMON_DEFAULT_SERVLET_NAME;
        } else if(this.getServletContext().getNamedDispatcher(RESIN_DEFAULT_SERVLET_NAME) != null) {
            return RESIN_DEFAULT_SERVLET_NAME;
        } else if(this.getServletContext().getNamedDispatcher(WEBLOGIC_DEFAULT_SERVLET_NAME) != null){
            return WEBLOGIC_DEFAULT_SERVLET_NAME;
        } else if(this.getServletContext().getNamedDispatcher(WEBSPHERE_DEFAULT_SERVLET_NAME) != null){
            return WEBSPHERE_DEFAULT_SERVLET_NAME;
        } else {
            throw new IllegalStateException("Cannot determine what Server you currently use");
        }       
    }

    public void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req, resp);
    }

    public void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
    {
        RequestDispatcher rd = getServletContext().getNamedDispatcher(this.scanDefaultServlet());
        HttpServletRequest wrapped = new HttpServletRequestWrapper(req) {
                public String getServletPath() {return "";}
        };
        rd.forward(wrapped, resp);
    }
}

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JavaURL模式404

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