【Java】按照Spring实战配置的SpringMVC控制器不能对浏览器的请求进行跳转？

Z时代
2024-01-10
分类：技术分享

在Eclipse中按照《Spring实战》第四版关于SpringMVC控制器的有关代码写了一个最简单的控制器，
但是在浏览器中却无法通过http://localhost:8080/homepage跳转到在控制器中指定的home.jsp文件，一直提示404错误。
【Java】按照Spring实战配置的SpringMVC控制器不能对浏览器的请求进行跳转？

奇怪的是使用mockMvc对跳转的返回值进行验证确实是正确的（这个验证方式也是书上教的），
想问下我的问题到底出在哪里？

工程目录结构如下：
【Java】按照Spring实战配置的SpringMVC控制器不能对浏览器的请求进行跳转？

SpittrWebAppInitializer.java代码如下：

package spittr.config;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
public class SpittrWebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
@Override
protected Class<?>[] getRootConfigClasses() {
// TODO Auto-generated method stub
return new Class<?>[] {RootConfig.class};
}
@Override
protected Class<?>[] getServletConfigClasses() {
// TODO Auto-generated method stub
return new Class<?>[] {WebConfig.class};
}
@Override
protected String[] getServletMappings() {
// TODO Auto-generated method stub
return new String[]{"/"};
}
}

WebConfig.java如下：

package spittr.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
@Configuration
@EnableWebMvc
@ComponentScan("spitter.web")
public class WebConfig extends WebMvcConfigurerAdapter {
@Bean
public ViewResolver viewRseolver(){
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-INF/views/");
resolver.setSuffix(".jsp");
resolver.setExposeContextBeansAsAttributes(true);
return resolver;
}
@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer){
configurer.enable();
}
}

RootConfig.java如下：

package spittr.config;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.ComponentScan.Filter;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.FilterType;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
@Configuration
@ComponentScan(basePackages={"spitter"},excludeFilters={@Filter(type=FilterType.ANNOTATION,value=EnableWebMvc.class)})
public class RootConfig {
}

控制器HomeController.java如下：

package spittr.web;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
@Controller
@RequestMapping({"/","/homepage"})
public class HomeController {
@RequestMapping(method=RequestMethod.GET)
public String home(){
return "home";
}
}

实在找不到问题在哪里……