Java Spring4HTTP状态404_Java_Spring_Spring Mvc_Intellij Idea

Java Spring4HTTP状态404

java spring spring-mvc intellij-idea

Java Spring4HTTP状态404,java,spring,spring-mvc,intellij-idea,Java,Spring,Spring Mvc,Intellij Idea,我刚开始使用Spring4。我想用java配置设置Spring4MVC项目。我使用IntelliJ Idea 13.1.6。首先，我从SpringMVC3.2模板创建新的Spring4MVC项目。然后我添加了JavaSpring配置文件，但当我运行应用程序时，它会从Hello模板控制器而不是我的主控制器显示“Hello world”。以下是我的项目结构：这是我的项目文件： Hello控制器： package com.spitter.mvc; import org.springframewo

我刚开始使用Spring4。我想用java配置设置Spring4MVC项目。我使用IntelliJ Idea 13.1.6。首先，我从SpringMVC3.2模板创建新的Spring4MVC项目。然后我添加了JavaSpring配置文件，但当我运行应用程序时，它会从Hello模板控制器而不是我的主控制器显示“Hello world”。以下是我的项目结构：

这是我的项目文件：

Hello控制器：

package com.spitter.mvc;

import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@Controller
@RequestMapping("/")
public class HelloController {
    @RequestMapping(method = RequestMethod.GET)
    public String printWelcome(ModelMap model) {
        model.addAttribute("message", "Hello world!");
        return "hello";
    }
}

package spittr.web;
import static org.springframework.web.bind.annotation.RequestMethod.*;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@Controller
public class HomeController {
    @RequestMapping(value="/", method=GET)
    public String home() {
        return "home";
    }
}

根配置：

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 {
}

SpitrWebAppInitializer：

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

mvc-dispatcher-servlet.xml：

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

    <context:component-scan base-package="com.spitter.mvc"/>

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/pages/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

</beans>

web-app.xml：

<web-app version="2.4"
    xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
    http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

    <display-name>Spring MVC Application</display-name>

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

    <servlet-mapping>
        <servlet-name>mvc-dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>


SpringMVC应用程序
mvc调度器
org.springframework.web.servlet.DispatcherServlet
1.
mvc调度器
/

Spitter.iml：

<?xml version="1.0" encoding="UTF-8"?>
<module org.jetbrains.idea.maven.project.MavenProjectsManager.isMavenModule="true" type="JAVA_MODULE" version="4">
  <component name="FacetManager">
    <facet type="web" name="Web">
      <configuration>
        <descriptors>
          <deploymentDescriptor name="web.xml" url="file://$MODULE_DIR$/src/main/webapp/WEB-INF/web.xml" />
        </descriptors>
        <webroots>
          <root url="file://$MODULE_DIR$/src/main/webapp" relative="/" />
        </webroots>
        <sourceRoots>
          <root url="file://$MODULE_DIR$/src/main/resources" />
          <root url="file://$MODULE_DIR$/src/main/java" />
        </sourceRoots>
      </configuration>
    </facet>
    <facet type="Spring" name="Spring">
      <configuration />
    </facet>
  </component>
  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_6" inherit-compiler-output="false">
    <output url="file://$MODULE_DIR$/target/classes" />
    <output-test url="file://$MODULE_DIR$/target/test-classes" />
    <content url="file://$MODULE_DIR$">
      <sourceFolder url="file://$MODULE_DIR$/src/test/resources" isTestSource="true" />
      <sourceFolder url="file://$MODULE_DIR$/src/main/resources" isTestSource="false" />
      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
      <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
      <excludeFolder url="file://$MODULE_DIR$/target" />
    </content>
    <orderEntry type="inheritedJdk" />
    <orderEntry type="sourceFolder" forTests="false" />
    <orderEntry type="library" scope="TEST" name="Maven: org.springframework:spring-test-mvc:1.0.0.M2" level="project" />
    <orderEntry type="library" scope="PROVIDED" name="Tomcat 8.0.151" level="application_server_libraries" />
    <orderEntry type="library" name="Maven: org.springframework:spring-core:3.2.0.RELEASE" level="project" />
    <orderEntry type="library" name="Maven: commons-logging:commons-logging:1.1.1" level="project" />
    <orderEntry type="library" name="Maven: org.springframework:spring-web:3.2.0.RELEASE" level="project" />
    <orderEntry type="library" name="Maven: org.springframework:spring-context:3.2.0.RELEASE" level="project" />
    <orderEntry type="library" name="Maven: org.springframework:spring-aop:3.2.0.RELEASE" level="project" />
    <orderEntry type="library" name="Maven: aopalliance:aopalliance:1.0" level="project" />
    <orderEntry type="library" name="Maven: org.springframework:spring-beans:3.2.0.RELEASE" level="project" />
    <orderEntry type="library" name="Maven: org.springframework:spring-expression:3.2.0.RELEASE" level="project" />
    <orderEntry type="library" scope="PROVIDED" name="Maven: javax.servlet.jsp:jsp-api:2.1" level="project" />
    <orderEntry type="library" name="Maven: org.springframework:spring-webmvc:3.2.0.RELEASE" level="project" />
    <orderEntry type="library" scope="TEST" name="Maven: org.springframework:spring-test:3.2.0.RELEASE" level="project" />
    <orderEntry type="library" scope="TEST" name="Maven: junit:junit:4.8.2" level="project" />
    <orderEntry type="library" name="Maven: javax.servlet:jstl:1.2" level="project" />
  </component>
</module>

为什么这段代码不运行home controller但hello controller InDead，我如何修复它

我怀疑Spitter.iml文件和spring只查看web.xml配置而不是java类配置有问题。

我看到的主要问题是配置和一些小细节。在您的示例中，您使用两种方式来配置项目（Java和XML）。我建议使用基于Java的配置，它可以组合使用，但不会引起冲突

您的示例运行HelloController，因为它在mvc-dispatcher-servlet.xml中与基本包一起指示

<context:component-scan base-package="com.spitter.mvc"/>

和WebConfig类似

@Configuration
@EnableWebMvc
@ComponentScan("spittr.web")
public class WebConfig extends WebMvcConfigurerAdapter {

    // Configure a JSP view resolver
    @Bean
    public ViewResolver viewResolver() {
        InternalResourceViewResolver resolver = new InternalResourceViewResolver();
        resolver.setViewClass(JstlView.class);
        resolver.setPrefix("/WEB-INF/pages/");
        resolver.setSuffix(".jsp");
        return resolver;
    }

    @Override
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
        configurer.enable();
    }

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        // TODO Auto-generated method stub
        super.addResourceHandlers(registry);
    }
}

并且您的控制器中只能有唯一的路径，例如，如果您将com.spitter.mvc包添加到@ComponentScan，您将有一个错误。

您应该尝试将其缩小到再现问题的代码最少，因为完成所有代码本身就是一个项目！您的控制器正在使用相同的请求映射路径。不，不是这样。当我将hello controller中的请求映射更改为@RequestMapping（“/hello”）时，我得到HTTP状态404：(

@Configuration
@EnableWebMvc
@ComponentScan("spittr.web")
public class WebConfig extends WebMvcConfigurerAdapter {

    // Configure a JSP view resolver
    @Bean
    public ViewResolver viewResolver() {
        InternalResourceViewResolver resolver = new InternalResourceViewResolver();
        resolver.setViewClass(JstlView.class);
        resolver.setPrefix("/WEB-INF/pages/");
        resolver.setSuffix(".jsp");
        return resolver;
    }

    @Override
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
        configurer.enable();
    }

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        // TODO Auto-generated method stub
        super.addResourceHandlers(registry);
    }
}