Tomcat在Spring中给出404错误？

Question

我一直在从this website 构建一个 Spring webapp。当我运行教程代码时，应用程序运行完美。但是，当我运行修改后的代码版本时，出现以下错误：

我不知道为什么会这样；我有效地复制并粘贴了整个代码库，只是将数据更改为 Campaign 而不是 Strategy。

这是我的配置类：

package com.bridge.campaignspring.config;

import java.util.Properties;

import javax.annotation.Resource;
import javax.sql.DataSource;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
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
@ComponentScan("com.bridge.campaignspring")
@PropertySource("classpath:database.properties")
public class DatabaseConfig {

    private static final String PROPERTY_NAME_DATABASE_DRIVER = "db.driver";
    private static final String PROPERTY_NAME_DATABASE_PASSWORD = "db.password";
    private static final String PROPERTY_NAME_DATABASE_URL = "db.url";
    private static final String PROPERTY_NAME_DATABASE_USERNAME = "db.username";

    private static final String PROPERTY_NAME_HIBERNATE_DIALECT = "hibernate.dialect";
    private static final String PROPERTY_NAME_HIBERNATE_SHOW_SQL = "hibernate.show_sql";
    private static final String PROPERTY_NAME_ENTITYMANAGER_PACKAGES_TO_SCAN = "entitymanager.packages.to.scan";

    @Resource
    private Environment env;

    @Bean
    public DataSource dataSource() {
        DriverManagerDataSource dataSource = new DriverManagerDataSource();
        dataSource.setDriverClassName(env.getRequiredProperty(PROPERTY_NAME_DATABASE_DRIVER));
        dataSource.setUrl(env.getRequiredProperty(PROPERTY_NAME_DATABASE_URL));
        dataSource.setUsername(env.getRequiredProperty(PROPERTY_NAME_DATABASE_USERNAME));
        dataSource.setPassword(env.getRequiredProperty(PROPERTY_NAME_DATABASE_PASSWORD));
        return dataSource;
    }

    private Properties hibProperties() {
        Properties properties = new Properties();
        properties.put(PROPERTY_NAME_HIBERNATE_DIALECT, env.getRequiredProperty(PROPERTY_NAME_HIBERNATE_DIALECT));
        properties.put(PROPERTY_NAME_HIBERNATE_SHOW_SQL, env.getRequiredProperty(PROPERTY_NAME_HIBERNATE_SHOW_SQL));
        return properties;
    }

    @Bean
    public HibernateTransactionManager transactionManager() {
        HibernateTransactionManager transactionManager = new HibernateTransactionManager();
        transactionManager.setSessionFactory(sessionFactory().getObject());
        return transactionManager;
    }

    @Bean
    public LocalSessionFactoryBean sessionFactory() {
        LocalSessionFactoryBean sessionFactoryBean = new LocalSessionFactoryBean();
        sessionFactoryBean.setDataSource(dataSource());
        sessionFactoryBean.setPackagesToScan(env.getRequiredProperty(PROPERTY_NAME_ENTITYMANAGER_PACKAGES_TO_SCAN));
        sessionFactoryBean.setHibernateProperties(hibProperties());
        return sessionFactoryBean;
    }
}

我无法访问我创建的任何已创建的 .jsp。我只看到 404 错误。如果需要更多代码来解决此问题，请询问；我可以发布任何需要的东西。

编辑：这是我的 CampaignController 类：

package com.bridge.campaignspring.controller;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

import com.bridge.campaignspring.model.Campaign;
import com.bridge.campaignspring.service.CampaignService;

@Controller
@RequestMapping(value="/campaign")
public class CampaignController {

    @Autowired
    private CampaignService campaignService;

    @RequestMapping(value="/add", method=RequestMethod.GET)
    public ModelAndView addCampaignPage() {
        ModelAndView modelAndView = new ModelAndView("campaign-add");
        modelAndView.addObject("campaign", new Campaign());
        return modelAndView;
    }

    @RequestMapping(value="/add", method=RequestMethod.POST)
    public ModelAndView addingCampaign(@ModelAttribute Campaign campaign) {
        ModelAndView modelAndView = new ModelAndView("home");
        campaignService.addCampaign(campaign);
        String message = "Campaign was added sucessfully";
        modelAndView.addObject("message", message);
        return modelAndView;
    }

    @RequestMapping(value="/list")
    public ModelAndView listOfCampaigns() {
        ModelAndView modelAndView = new ModelAndView("campaign-list");
        List<Campaign> campaigns = campaignService.getCampaigns();
        modelAndView.addObject("campaigns", campaigns);
        return modelAndView;
    }

    @RequestMapping(value="/edit/{id}", method=RequestMethod.GET)
    public ModelAndView editCampaignPage(@PathVariable Integer id) {
        ModelAndView modelAndView = new ModelAndView("campaign-edit");
        Campaign campaign = campaignService.getCampaign(id);
        modelAndView.addObject("campaign", campaign);
        return modelAndView;
    }

    @RequestMapping(value="/edit/{id}", method=RequestMethod.POST)
    public ModelAndView editingCampaign(@ModelAttribute Campaign campaign, @PathVariable Integer id) {
        ModelAndView modelAndView = new ModelAndView("home");
        campaignService.updateCampaign(campaign);
        String message = "Campaign edited successfully";
        modelAndView.addObject("message", message);
        return modelAndView;
    }

    @RequestMapping(value="/delete/{id}", method=RequestMethod.GET)
    public ModelAndView deleteCampaign(@PathVariable Integer id) {
        ModelAndView modelAndView = new ModelAndView("home");
        campaignService.deleteCampaign(id);
        String message = "Campaign deleted successfully";
        modelAndView.addObject("message", message);
        return modelAndView;        
    }
}

Answer 1

您的网址应包含/campaign/add, ...

URL 由@RequestMapping 中的注解属性定义

@Controller
@RequestMapping(value="/campaign")
public class CampaignController {

    @Autowired
    private CampaignService campaignService;

    @RequestMapping(value="/add", method=RequestMethod.GET)
    public ModelAndView addCampaignPage() {

Answer 2

不完全确定发生了什么，但它可能与我的 Tomcat 配置有关。我删除了服务器，然后重新添加了它，它工作了。