基于 Spring mvc Java 的配置不起作用。控制台显示没有错误但我的jsp页面没有显示

Posted 2023-02-27

【中文标题】基于 Spring mvc Java 的配置不起作用。控制台显示没有错误但我的jsp页面没有显示

【英文标题】：Spring mvc Java based Configuration not working. Console display no error but my jsp page is not showing

【发布时间】：2015-04-27 05:31:07

【问题描述】：

您好，我正在将我的简单演示项目从 bean 配置转换为纯 Java 配置。 Bean 配置可以很好地创建表和所有内容。但是我的 java 配置没有显示任何页面。我解决了很多错误，现在控制台显示没有指定问题的错误。这是我的代码，请找出问题所在，或者我错过了配置中的任何内容。我是 spring 新手，对基于 java 的配置相当陌生。这些是我从中获取代码的网站。

http://codehustler.org/blog/spring-security-tutorial-form-login-java-config/

对于休眠，我使用了本教程

http://websystique.com/spring/spring4-hibernate4-mysql-maven-integration-example-using-annotations/

我的课

1. AppConfiguration
 package com.kharoud.configuration;
 import org.springframework.context.annotation.ComponentScan;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Import;

 @Configuration
 @ComponentScan("com.kharoud")
 @Import(MvcConfiguraion.class, RepositoryConfiguration.class)
 public class AppConfiguration 

 

2.Mvc配置

package com.kharoud.configuration;

import org.springframework.beans.factory.annotation.Configurable;
import org.springframework.context.annotation.Bean;
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;


@EnableWebMvc
@Configuration
public class MvcConfiguraion extends WebMvcConfigurerAdapter


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


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

3.RepositoryConfiguration 包 com.kharoud.configuration;

import java.util.Properties;

import javax.sql.DataSource;

import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.core.env.Environment;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.orm.hibernate4.HibernateTransactionManager;
import org.springframework.orm.hibernate4.LocalSessionFactoryBean;
import org.springframework.transaction.annotation.EnableTransactionManagement;

@Configuration
@EnableTransactionManagement
@PropertySource( "classpath:hibernate.properties" )
public class RepositoryConfiguration 

@Autowired
private Environment environment;

@Bean
public LocalSessionFactoryBean sessionFactory()        
    LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
    sessionFactory.setDataSource(dataSource());
    sessionFactory.setPackagesToScan(new String[] "com.kharoud.model");
    sessionFactory.setHibernateProperties(hibernateProperties());
    return sessionFactory;


@Bean
public Properties hibernateProperties() 
    Properties properties = new Properties();
    properties.put("hibernate.dialect",      environment.getRequiredProperty("hibernate.dialect"));
    properties.put("hibernate.show_sql", environment.getRequiredProperty("hibernate.show_sql"));
    properties.put("hibernate.hbm2ddl.auto", environment.getRequiredProperty("hibernate.hbm2ddl.auto"));
    return properties;


@Bean
public DataSource dataSource()         
    DriverManagerDataSource dataSource = new DriverManagerDataSource();
    dataSource.setDriverClassName(environment.getRequiredProperty("jdbc.driverClassName"));
    dataSource.setUrl(environment.getRequiredProperty("jdbc.url"));
    dataSource.setUsername(environment.getRequiredProperty("jdbc.username"));
    dataSource.setPassword(environment.getRequiredProperty("jdbc.password"));
    return dataSource;


@Bean
@Autowired
public HibernateTransactionManager transactionManager(SessionFactory s) 
   HibernateTransactionManager txManager = new   HibernateTransactionManager();
   txManager.setSessionFactory(s);
   return txManager;

4.SpringConfigurationInitializer

package com.kharoud.configuration.initilizer;

import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;

import com.kharoud.configuration.AppConfiguration;


public class SpringConfigurationInitializer extends     AbstractAnnotationConfigDispatcherServletInitializer

@Override
protected Class<?>[] getRootConfigClasses() 
    return new Class[]  AppConfiguration.class ;


@Override
protected Class<?>[] getServletConfigClasses() 
    // TODO Auto-generated method stub
    return null;


@Override
protected String[] getServletMappings() 

    return new String[]  "/" ;

只添加了这些新类。我删除了我的 web.xml。

稍后我会添加 Spring Security 配置类

这是我的控制台输出

Feb 25, 2015 2:32:13 PM org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal     performance in production environments was not found on the java.library.path: C:\Program     Files\Java\jdk1.8.0_25\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Window     s;C:/Program Files/Java/jre1.8.0_25/bin/server;C:/Program   Files/Java/jre1.8.0_25/bin;C:/Program     Files/Java/jre1.8.0_25/lib/amd64;C:\ProgramData\Oracle\Java\javapath;C:\Windows\      system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShe     ll\v1.0\;C:\Program Files\Java\jdk1.8.0_25\bin;;C:\ECLIPSE\eclipse;;.
 Feb 25, 2015 2:32:14 PM org.apache.tomcat.util.digester.SetPropertiesRule begin
 WARNING: [SetPropertiesRule]Server/Service/Engine/Host/Context Setting   property 'source' to 'org.eclipse.jst.jee.server:ProjectDemo' did not find a   matching property.
Feb 25, 2015 2:32:14 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-bio-8080"]
Feb 25, 2015 2:32:14 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["ajp-bio-8009"]
Feb 25, 2015 2:32:14 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 1063 ms
Feb 25, 2015 2:32:14 PM org.apache.catalina.core.StandardService  startInternal
INFO: Starting service Catalina
Feb 25, 2015 2:32:14 PM org.apache.catalina.core.StandardEngine  startInternal
INFO: Starting Servlet Engine: Apache Tomcat/7.0.47
Feb 25, 2015 2:32:15 PM org.apache.catalina.util.SessionIdGenerator createSecureRandom
INFO: Creation of SecureRandom instance for session ID generation using  [SHA1PRNG] took [217] milliseconds.
Feb 25, 2015 2:32:18 PM org.apache.catalina.core.ApplicationContext log
INFO: Spring WebApplicationInitializers detected on classpath:  [com.kharoud.configuration.initilizer.SpringConfigurationInitializer@389ae113]
Feb 25, 2015 2:32:18 PM org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring root WebApplicationContext
log4j:WARN No appenders could be found for logger  (org.springframework.web.context.ContextLoader).
log4j:WARN Please initialize the log4j system properly.
Feb 25, 2015 2:32:26 PM org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring FrameworkServlet 'dispatcher'
Feb 25, 2015 2:32:26 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-bio-8080"]
Feb 25, 2015 2:32:26 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["ajp-bio-8009"]
Feb 25, 2015 2:32:26 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 11876 ms

我的家庭控制器

package com.kharoud;

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


@Controller
public class HomeController 

    @RequestMapping("/")
    public String welcome(Model model)
        return "index";
    

Myindex.jsp 文件位于 webapp 文件夹下的 WEB-INF/views 文件夹中

The views were properly resolved with bean configuration.

【问题讨论】：

您的MvcConfiguration 不应由ContextLoaderListener 加载，而应由DispatcherServlet 加载。移除AppConfiguration 类，让正确的组件加载不同的配置。

或者让DispatcherServlet加载所有配置，而不是ContextLoaderListener。

我应该删除我的 AppConfiguration 类。 ContextLoaderListener 如何以及从何处加载我的 MvcConfiguration。我应该通过 SpringConfigurationInitializer 初始化所有类吗？您能否提供一些加载 dispatcherServlet 的代码。谢谢

AbstractAnnotationConfigDispatcherServletInitializer 负责您只需传递正确的配置类。让getServletConfigClasses 返回AppConfiguration 而不是getRootConfigClasses 可能会解决您的问题。

我进行了更改，但仍然没有效果。我还在我的 MvcConfiguration 类中将 @Configurable 更正为 -@Configuration 但它也没有让它工作。

【参考方案1】：

感谢您的回答。我发现了问题。当我在我的 MvcConfiguration 类之上编写 @ComponentScan 时，它可以工作并且页面正在显示。