如何将Spring MVC控制器映射到带有和不带斜杠的uri？

Question

我有一个Spring Controller,它有几个RequestMappings用于不同的URI.我的servlet是"ui".servlet的基URI仅适用于尾部斜杠.我希望我的用户不必输入尾部斜杠.

此URI有效:

http://localhost/myapp/ui/

这个没有:

http://localhost/myapp/ui

它给了我一个HTTP状态404消息.

我的web.xml中的servlet和映射是:

<servlet>
    <servlet-name>ui</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>ui</servlet-name>
    <url-pattern>/ui/*</url-pattern>
</servlet-mapping>    

我的控制器:

@Controller
public class UiRootController {

    @RequestMapping(value={"","/"})
    public ModelAndView mainPage() { 
        DataModel model = initModel();
        model.setView("intro");     
        return new ModelAndView("main", "model", model);
    }

    @RequestMapping(value={"/other"})
    public ModelAndView otherPage() { 
        DataModel model = initModel();
        model.setView("otherPage");     
        return new ModelAndView("other", "model", model);
    }

}

Answer 1

例如,如果Web应用程序存在于Web服务器的webapps目录中,webapps/myapp/则可以在http://localhost:8080/myapp/假定默认Tomcat端口的情况下访问此应用程序上下文的根目录.这应该使用或不使用尾部斜杠,我认为默认情况下 - Jetty v8.1.5中就是这种情况

一旦你点击/myappSpring DispatcherServlet接管,就将请求路由到<servlet-name>你的配置web.xml,在你的情况下是/ui/*.

DispatcherServlet然后将所有请求路由http://localhost/myapp/ui/到@Controllers.

在控制器本身可以使用@RequestMapping(value = "/*")的炫魅()方法,这将导致两个http://localhost/myapp/ui/和http://localhost/myapp/ui被路由到炫魅() .

注意:由于SPR-7064,您还应该使用Spring> = v3.0.3

为了完整性,以下是我测试过的文件:

的src /主/爪哇/控制器/ UIRootController.java

package controllers;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

@Controller
public class UiRootController {
  @RequestMapping(value = "/*")
  public ModelAndView mainPage() {
    return new ModelAndView("index");
  }

  @RequestMapping(value={"/other"})
  public ModelAndView otherPage() {
    return new ModelAndView("other");
  }
}

WEB-INF/web.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
  version="3.0" metadata-complete="false">
  <servlet>
    <servlet-name>ui</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
    <!-- spring automatically discovers /WEB-INF/<servlet-name>-servlet.xml -->
  </servlet>

  <servlet-mapping>
    <servlet-name>ui</servlet-name>
    <url-pattern>/ui/*</url-pattern>
  </servlet-mapping>
</web-app>

WEB-INF/UI-servlet.xml中

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:p="http://www.springframework.org/schema/p"
  xmlns:context="http://www.springframework.org/schema/context"
  xsi:schemaLocation="http://www.springframework.org/schema/beans
  http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
  http://www.springframework.org/schema/context
  http://www.springframework.org/schema/context/spring-context-3.0.xsd">

<context:component-scan base-package="controllers" />

<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"
  p:order="2"
  p:viewClass="org.springframework.web.servlet.view.JstlView"
  p:prefix="/WEB-INF/views/"
  p:suffix=".jsp"/>
</beans>

还有2个JSP文件WEB-INF/views/index.jsp和WEB-INF/views/other.jsp.

结果:

• http://localhost/myapp/ - >目录列表
• http://localhost/myapp/ui和http://localhost/myapp/ui/- > index.jsp
• http://localhost/myapp/ui/other和http://localhost/myapp/ui/other/- > other.jsp

希望这可以帮助!

Answer 2

使用Springboot,我的应用程序可以通过将@ RequestMapping的"value"选项设置为空字符串来回复斜杠和不斜杠:

@RestController
@RequestMapping("/some")
public class SomeController {
//                  value = "/" (default) ,
//                  would limit valid url to that with trailing slash.
    @RequestMapping(value = "", method = RequestMethod.GET)
    public Collection<Student> getAllStudents() {
        String msg = "getting all Students";
        out.println(msg);
        return StudentService.getAllStudents();
    }
}

Answer 3

PathMatchConfigurer api允许您配置与URL映射和路径匹配相关的各种设置.根据最新版本的spring,默认情况下启用了路径路径匹配.要进行自定义,请查看以下示例.

对于基于Java的配置

@Configuration
@EnableWebMvc
public class AppConfig extends WebMvcConfigurerAdapter {
    @Override
    public void configurePathMatch(PathMatchConfigurer configurer) {
        configurer.setUseTrailingSlashMatch(true);
    }
}

对于基于XML的配置

<mvc:annotation-driven>
    <mvc:path-matching trailing-slash="true"/>
</mvc:annotation-driven>

对于@RequestMapping("/ foo"),如果尾部斜杠匹配设置为false,则为example.com/foo/!= example.com/foo,如果设置为true(默认值),则为example.com/foo/ == example .COM /富

干杯!