spring mvc@PathVariable给出“客户端发送的请求语法不正确。”

Question

嗨，我是spring MVC的新手，正在尝试一些简单的例子。

我在eclipse中使用archtype'spring-mvc-archtype'创建了一个新的spring mvc maven项目。

我正试图点击一个url并在映射 中使用@pathparam访问PathVariables

这是我的控制器类

@Controller
@RequestMapping(value="/greet")
public class HomeController {

@RequestMapping(value="/welcome/{countryName}/{userName}")
public ModelAndView test(@PathVariable("userName") String userName, @PathVariable("countryName") String countryName) throws IOException{
    ModelAndView mav = new ModelAndView("home");
    mav.addObject("mymessage", "Welcome To "+countryName+" , Spring MVC - "+userName);
    return mav;
}

@RequestMapping(value="/hi/{cn}/{un}")
public ModelAndView hi(@PathVariable Map<String, String> pathVars){

    String countryName = pathVars.get("cn");
    String userName = pathVars.get("un");

    ModelAndView mav = new ModelAndView("home");
    mav.addObject("mymessage", "Hi "+userName+" in "+ countryName);
    return mav;
}
}

下面是Configuration类

@Configuration
@EnableWebMvc
@ComponentScan(basePackages="org.gyanbang.kiran.SpringMvc")
public class MvcConfiguration extends WebMvcConfigurerAdapter{

@Bean
public ViewResolver getViewResolver(){
    InternalResourceViewResolver resolver = new InternalResourceViewResolver();
    resolver.setPrefix("/WEB-INF/views/");
    resolver.setSuffix(".jsp");
    return resolver;
}

@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
    registry.addResourceHandler("/resources/**").addResourceLocations("/resources/");
}   
}

因此，当我运行它并点击http://localhost:8080/springmvc/greet/welcome/india/user1时，它工作良好，并得到所需的结果。

但是在http：//localhost:8080/springmvc/greet/hi/india/user1上，它给出了一个400错误的消息：“客户端发送的请求语法不正确。”

我试过几个选项，也试过将spring-WebMVC版本更改为4.1.6.release，但在这种情况下它给了我404。

任何帮助都会很好。提前道谢。

Answer 1

@pathvariable可以使用map ，您需要将 使用到applicationcontaxt.xml中。您可以在下面找到代码：

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
                    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd     
                    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
                    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd">

<mvc:annotation-driven/>