Spring MVC完全注解方式配置web项目

package com.liulu.bank.config;

import org.springframework.web.WebApplicationInitializer;
import org.springframework.web.filter.CharacterEncodingFilter;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;

import javax.servlet.FilterRegistration;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import java.nio.charset.StandardCharsets;

/**
 * User : liulu
 * Date : 2016-10-7 15:12
 */
public class WebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer implements WebApplicationInitializer {

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

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

 /**
  * 配置DispatcherServlet 匹配的路径
  * @return
  */
 @Override
 protected String[] getServletMappings() {
  return new String[]{"/"};
 }

 /**
  * 配置其他的 servlet 和 filter
  *
  * @param servletContext
  * @throws ServletException
  */
 @Override
 public void onStartup(ServletContext servletContext) throws ServletException {
  FilterRegistration.Dynamic encodingFilter = servletContext.addFilter("encodingFilter", CharacterEncodingFilter.class);
  encodingFilter.setInitParameter("encoding", String.valueOf(StandardCharsets.UTF_8));
  encodingFilter.setInitParameter("forceEncoding", "true");
  encodingFilter.addMappingForUrlPatterns(null, false, "/*");
 }
}

package com.liulu.bank.config;

import com.mchange.v2.c3p0.ComboPooledDataSource;
import org.springframework.context.annotation.*;
import org.springframework.core.env.Environment;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.stereotype.Controller;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;

import javax.annotation.Resource;
import javax.sql.DataSource;
import java.beans.PropertyVetoException;

/**
 * User : liulu
 * Date : 2016-10-7 15:36
 */
@Configuration
@PropertySource("classpath:config.properties") // 导入属性文件
@EnableAspectJAutoProxy // 相当于 xml 中的 <aop:aspectj-autoproxy/>
@EnableTransactionManagement // 开启注解事务
@ComponentScan(basePackages = {"com.liulu.lit", "com.liulu.bank"}, excludeFilters = @ComponentScan.Filter(classes = Controller.class ))
public class RootConfig {

 // 上面导入的属性文件中的属性会 注入到 Environment 中
 @Resource
 private Environment env;

 /**
  * 配置数据库连接池 c3p0，
  * @return
  * @throws PropertyVetoException
  */
 @Bean
 public DataSource dataSource() throws PropertyVetoException {
  ComboPooledDataSource dataSource = new ComboPooledDataSource();
  dataSource.setJdbcUrl(env.getProperty("db.url"));
  dataSource.setDriverClass(env.getProperty("db.driver"));
  dataSource.setUser(env.getProperty("db.user"));
  dataSource.setPassword(env.getProperty("db.password"));
  dataSource.setMinPoolSize(Integer.valueOf(env.getProperty("pool.minPoolSize")));
  dataSource.setMaxPoolSize(Integer.valueOf(env.getProperty("pool.maxPoolSize")));
  dataSource.setAutoCommitOnClose(false);
  dataSource.setCheckoutTimeout(Integer.valueOf(env.getProperty("pool.checkoutTimeout")));
  dataSource.setAcquireRetryAttempts(2);
  return dataSource;
 }

 /**
  * 配置事物管理器
  * @param dataSource
  * @return
  */
 @Bean
 public PlatformTransactionManager transactionManager(DataSource dataSource) {
  return new DataSourceTransactionManager(dataSource);
 }

 @Bean
 public JdbcTemplate jdbcTemplate (DataSource dataSource) {
  return new JdbcTemplate(dataSource);
 }


}

#数据库配置
db.url=jdbc:mysql://192.168.182.135:3306/bank
db.driver=com.mysql.jdbc.Driver
db.user=root
db.password=123456

#数据库连接池配置
#连接池中保留的最小连接数
pool.minPoolSize=5
#连接池中保留的最大连接数
pool.maxPoolSize=30
#获取连接超时时间
pool.checkoutTimeout=1000

package com.liulu.bank.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Controller;
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.thymeleaf.TemplateEngine;
import org.thymeleaf.spring4.SpringTemplateEngine;
import org.thymeleaf.spring4.templateresolver.SpringResourceTemplateResolver;
import org.thymeleaf.spring4.view.ThymeleafViewResolver;
import org.thymeleaf.templatemode.TemplateMode;

import java.nio.charset.StandardCharsets;

/**
 * User : liulu
 * Date : 2016-10-7 15:16
 */
@Configuration
@EnableWebMvc // 启用 SpringMVC ，相当于 xml中的 <mvc:annotation-driven/>
@ComponentScan(basePackages = {"com.liulu.bank.controller", "com.liulu.lit"},
  includeFilters = @ComponentScan.Filter(classes = Controller.class),
  useDefaultFilters = false)
public class WebConfig extends WebMvcConfigurerAdapter {

 /**
  * 设置由 web容器处理静态资源 ，相当于 xml中的<mvc:default-servlet-handler/>
  */
 @Override
 public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
  configurer.enable();
 }

 /**
  * 下面三个bean 配置 Thymeleaf 模板
  * @return
  */
 @Bean
 public SpringResourceTemplateResolver templateResolver() {
  SpringResourceTemplateResolver templateResolver = new SpringResourceTemplateResolver();
  templateResolver.setPrefix("/WEB-INF/templates/");
  templateResolver.setSuffix(".html");
  templateResolver.setTemplateMode(TemplateMode.HTML);
  templateResolver.setCharacterEncoding(String.valueOf(StandardCharsets.UTF_8));
  return templateResolver;
 }

 @Bean
 public TemplateEngine templateEngine(SpringResourceTemplateResolver templateResolver) {
  SpringTemplateEngine templateEngine = new SpringTemplateEngine();
  templateEngine.setTemplateResolver(templateResolver);
  return templateEngine;
 }

 @Bean
 public ViewResolver viewResolver(TemplateEngine templateEngine) {
  ThymeleafViewResolver viewResolver = new ThymeleafViewResolver();
  viewResolver.setTemplateEngine(templateEngine);
  viewResolver.setCharacterEncoding(String.valueOf(StandardCharsets.UTF_8));
  return viewResolver;
 }

}