从无到有(一)----无web.xml全注解SpringMVC框架搭建

1.配置结构

2.RootConfig(application-context.xml)

package com.ahu.gd.crms.config;


import com.ahu.gd.crms.util.ConfigUtil;
import org.apache.commons.dbcp2.BasicDataSource;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.config.PropertiesFactoryBean;
import org.springframework.context.annotation.*;
import org.springframework.core.env.Environment;
import org.springframework.orm.hibernate5.HibernateTransactionManager;
import org.springframework.orm.hibernate5.LocalSessionFactoryBean;
import org.springframework.transaction.annotation.EnableTransactionManagement;

import javax.annotation.Resource;
import javax.sql.DataSource;
import java.beans.PropertyVetoException;
import java.io.IOException;
import java.util.Properties;

@Configuration
@ComponentScan(basePackages = {"com.ahu.gd.crms.service","com.ahu.gd.crms.dao"})
@EnableTransactionManagement
@EnableAspectJAutoProxy
@PropertySource("classpath:jdbc.properties")
public class RootConfig {
    @Resource
    private Environment environment;

    @Bean(name="hibernateProperties")
    public PropertiesFactoryBean hibernatePropertiesFactoryBean() {
        return ConfigUtil.propertiesFactoryBean("hibernate.properties");
    }

    @Bean(name = "dataSource")
    public BasicDataSource basicDataSource() throws PropertyVetoException {
        BasicDataSource dataSource = new BasicDataSource();
        dataSource.setUrl(environment.getProperty("c3p0.url"));
        dataSource.setDriverClassName(environment.getProperty("c3p0.driverClass"));
        dataSource.setUsername(environment.getProperty("c3p0.username"));
        dataSource.setPassword(environment.getProperty("c3p0.password"));
        return dataSource;
    }

    @Bean(name = "sessionFactory")
    public LocalSessionFactoryBean localSessionFactoryBean(DataSource dataSource,Properties hibernateProperties) {
        LocalSessionFactoryBean localSessionFactoryBean = new LocalSessionFactoryBean();
        localSessionFactoryBean.setDataSource(dataSource);
        localSessionFactoryBean.setPackagesToScan("com.ahu.gd.crms.model");
        localSessionFactoryBean.setHibernateProperties(hibernateProperties);
        return localSessionFactoryBean;
    }

    @Bean(name="txManager")
    public HibernateTransactionManager hibernateTransactionManager(SessionFactory sessionFactory) {
        return new HibernateTransactionManager(sessionFactory);
    }



}

2.WebConfig(springmvc-servlet)

package com.ahu.gd.crms.config;

import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.StringHttpMessageConverter;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;

import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.thymeleaf.spring4.SpringTemplateEngine;
import org.thymeleaf.spring4.view.ThymeleafViewResolver;
import org.thymeleaf.templateresolver.ITemplateResolver;
import org.thymeleaf.templateresolver.ServletContextTemplateResolver;

import javax.annotation.Resource;
import java.util.ArrayList;
import java.util.List;


@Configuration
@EnableWebMvc
@ComponentScan(basePackages = {"com.ahu.gd.crms.controller"})

public class WebConfig extends WebMvcConfigurerAdapter {

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

    @Override
    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        converters.add(new StringHttpMessageConverter());
        FastJsonHttpMessageConverter fastJsonHttpMessageConverter = new FastJsonHttpMessageConverter();

        ArrayList<MediaType> list = new ArrayList<MediaType>();
        list.add(MediaType.valueOf("text/html;charset=UTF-8"));
        list.add(MediaType.valueOf("application/json;charset=UTF-8"));
        fastJsonHttpMessageConverter.setSupportedMediaTypes(list);
        converters.add(fastJsonHttpMessageConverter);
    }

    @Bean(name = "thymeleafResolver")
    public ServletContextTemplateResolver servletContextTemplateResolver() {
        ServletContextTemplateResolver resolver = new ServletContextTemplateResolver();
        resolver.setPrefix("/WEB-INF/view/");
        resolver.setSuffix(".html");
        resolver.setTemplateMode("HTML5");
        resolver.setCacheable(false);
        resolver.setCharacterEncoding("UTF-8");
        return resolver;
    }

    @Bean(name = "templateEngine")
    public SpringTemplateEngine springTemplateEngine(ServletContextTemplateResolver thymeleafResolver) {
        SpringTemplateEngine springTemplateEngine = new SpringTemplateEngine();
        springTemplateEngine.setTemplateResolver(thymeleafResolver);
        return springTemplateEngine;
    }

    @Bean
    public ThymeleafViewResolver thymeleafViewResolver(SpringTemplateEngine templateEngine) {
        ThymeleafViewResolver resolver = new ThymeleafViewResolver();
        resolver.setTemplateEngine(templateEngine);
        resolver.setCharacterEncoding("UTF-8");
        return resolver;
    }
}

3.WebAppInitializer(web.xml)

package com.ahu.gd.crms.config;

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

public class WebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
    protected Class<?>[] getRootConfigClasses() {
        return new Class<?>[]{RootConfig.class};
    }

    protected Class<?>[] getServletConfigClasses() {
        return new Class<?>[]{WebConfig.class};
    }

    protected String[] getServletMappings() {
        return new String[]{"/"};
    }
}

问题

1.启动时爆出com.mchange.v2.resourcepool.CannotAcquireResourceException

原因：url写错，使得无法获得连接

2.部署项目到tomcat没有任何日志输出

解决办法:在target/classes下添加logging.properties

handlers = org.apache.juli.FileHandler, java.util.logging.ConsoleHandler

############################################################
# Handler specific properties.
# Describes specific configuration info for Handlers.
############################################################

org.apache.juli.FileHandler.level = FINE
org.apache.juli.FileHandler.directory = ${catalina.base}/logs
org.apache.juli.FileHandler.prefix = error-debug.

java.util.logging.ConsoleHandler.level = FINE
java.util.logging.ConsoleHandler.formatter = java.util.logging.SimpleFormatter