使用注解方式启动应用,详细内容可以查看笔记:
package com.spr.init;
import java.util.Properties;
import javax.annotation.Resource;
import javax.sql.DataSource;
import org.hibernate.ejb.HibernatePersistence;
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.context.support.ResourceBundleMessageSource;
import org.springframework.core.env.Environment;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
import org.springframework.web.servlet.view.JstlView;
import org.springframework.web.servlet.view.UrlBasedViewResolver;
import com.mchange.v2.c3p0.ComboPooledDataSource;
@Configuration
@EnableWebMvc
@EnableTransactionManagement
@ComponentScan("com.spr")
@PropertySource(value = { "classpath:application.properties", "classpath:c3p0.properties" })
@EnableJpaRepositories("com.spr.repository")
public class WebAppConfig {
// c3p0
private static final String PROPERTY_NAME_C300_DRIVER = "driverClass";
private static final String PROPERTY_NAME_C300_PASSWORD = "password";
private static final String PROPERTY_NAME_C300_URL = "jdbcUrl";
private static final String PROPERTY_NAME_C300_USER = "user";
private static final String PROPERTY_NAME_C3P0_MINIPOOLSIZE = "miniPoolSize";
private static final String PROPERTY_NAME_C3P0_MAXPOOLSIZE = "maxPoolSize";
private static final String PROPERTY_NAME_C3P0_INITIALPOOLSIZE = "initialPoolSize";
private static final String PROPERTY_NAME_C3P0_MAXIDLETIME = "maxIdleTime";
private static final String PROPERTY_NAME_C3P0_ACQUIREINCREMENT = "acquireIncrement";
private static final String PROPERTY_NAME_C3P0_ACQUIRERETRYATTEMPTS = "acquireRetryAttempts";
private static final String PROPERTY_NAME_C3P0_ACQUIRERETRYDELAY = "acquireRetryDelay";
private static final String PROPERTY_NAME_C3P0_TESTCONNECTIONONCHECKIN = "testConnectionOnCheckin";
private static final String PROPERTY_NAME_C3P0_AUTOMATICTESTTABLE = "automaticTestTable";
private static final String PROPERTY_NAME_C3P0_IDLECONNECTIONTESTPERIOD = "idleConnectionTestPeriod";
private static final String PROPERTY_NAME_C3P0_CHECKOUTTIMEOUT = "checkoutTimeout";
// messageSouce
private static final String PROPERTY_NAME_MESSAGE_SOURCE_BASENAME = "message.source.basename";
// hibernate
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";
private static final String PROPERTY_NAME_HIBERNATE_HMB2DDL_AUTO = "hibernate.hbm2ddl.auto";
private static final String PROPERTY_NAME_HIBERANTE_FORMAT_SQL = "hiberante.format_sql";
@Resource
private Environment env;
@Bean
public DataSource dataSource() throws Exception {
ComboPooledDataSource comboPooledDataSource = new ComboPooledDataSource();
comboPooledDataSource.setDriverClass(env.getRequiredProperty(PROPERTY_NAME_C300_DRIVER));
comboPooledDataSource.setUser(env.getRequiredProperty(PROPERTY_NAME_C300_USER));
comboPooledDataSource.setJdbcUrl(env.getRequiredProperty(PROPERTY_NAME_C300_URL));
comboPooledDataSource.setPassword(env.getRequiredProperty(PROPERTY_NAME_C300_PASSWORD));
comboPooledDataSource.setAcquireIncrement(Integer.valueOf(env.getRequiredProperty(PROPERTY_NAME_C3P0_ACQUIREINCREMENT)));
comboPooledDataSource.setMaxIdleTime(Integer.valueOf(env.getRequiredProperty(PROPERTY_NAME_C3P0_MAXIDLETIME)));
comboPooledDataSource.setMinPoolSize(Integer.valueOf(env.getRequiredProperty(PROPERTY_NAME_C3P0_MINIPOOLSIZE)));
comboPooledDataSource.setMaxPoolSize(Integer.valueOf(env.getRequiredProperty(PROPERTY_NAME_C3P0_MAXPOOLSIZE)));
comboPooledDataSource.setInitialPoolSize(Integer.valueOf(env.getRequiredProperty(PROPERTY_NAME_C3P0_INITIALPOOLSIZE)));
comboPooledDataSource.setAcquireRetryAttempts(Integer.valueOf(env.getRequiredProperty(PROPERTY_NAME_C3P0_ACQUIRERETRYATTEMPTS)));
comboPooledDataSource.setAcquireRetryDelay(Integer.valueOf(env.getRequiredProperty(PROPERTY_NAME_C3P0_ACQUIRERETRYDELAY)));
comboPooledDataSource.setTestConnectionOnCheckin(Boolean.valueOf(env.getRequiredProperty(PROPERTY_NAME_C3P0_TESTCONNECTIONONCHECKIN)));
comboPooledDataSource.setAutomaticTestTable(env.getRequiredProperty(PROPERTY_NAME_C3P0_AUTOMATICTESTTABLE));
comboPooledDataSource.setIdleConnectionTestPeriod(Integer.valueOf(env.getRequiredProperty(PROPERTY_NAME_C3P0_IDLECONNECTIONTESTPERIOD)));
comboPooledDataSource.setCheckoutTimeout(Integer.valueOf(env.getRequiredProperty(PROPERTY_NAME_C3P0_CHECKOUTTIMEOUT)));
return comboPooledDataSource;
}
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() throws Exception {
LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
entityManagerFactoryBean.setDataSource(dataSource());
entityManagerFactoryBean.setPersistenceProviderClass(HibernatePersistence.class);
entityManagerFactoryBean.setPackagesToScan(env.getRequiredProperty(PROPERTY_NAME_ENTITYMANAGER_PACKAGES_TO_SCAN));
entityManagerFactoryBean.setJpaProperties(hibProperties());
return entityManagerFactoryBean;
}
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));
properties.put(PROPERTY_NAME_HIBERNATE_HMB2DDL_AUTO,
env.getRequiredProperty(PROPERTY_NAME_HIBERNATE_HMB2DDL_AUTO));
properties.put(PROPERTY_NAME_HIBERANTE_FORMAT_SQL, env.getRequiredProperty(PROPERTY_NAME_HIBERANTE_FORMAT_SQL));
return properties;
}
@Bean
public JpaTransactionManager transactionManager() throws Exception {
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(entityManagerFactory().getObject());
return transactionManager;
}
@Bean
public UrlBasedViewResolver setupViewResolver() {
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-INF/pages/");
resolver.setSuffix(".jsp");
resolver.setViewClass(JstlView.class);
return resolver;
}
@Bean
public ResourceBundleMessageSource messageSource() {
ResourceBundleMessageSource source = new ResourceBundleMessageSource();
source.setBasename(env.getRequiredProperty(PROPERTY_NAME_MESSAGE_SOURCE_BASENAME));
source.setUseCodeAsDefaultMessage(true);
return source;
}
}
dataSource()
使用c3p0连接池entityManagerFactory()
配置orm为hibernatetransactionManager()
配置事务messageSource()
i18n国际化@EnableWebMvc
启用mvc注解@EnableTransactionManagement
启用事务注解@ComponentScan("com.spr")
扫描spring注解@PropertySource(value = { "classpath:application.properties", "classpath:c3p0.properties" })
加载配置文件@EnableJpaRepositories("com.spr.repository")
扫描jpa注解
package com.spr.repository;
import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
import org.springframework.data.repository.CrudRepository;
import org.springframework.stereotype.Repository;
import com.spr.model.Shop;
@Repository("autowiringShopJpaRepository")
public interface AutowiringShopJpaRepository extends CrudRepository<Shop, Integer>, JpaSpecificationExecutor<Shop> {
}
package com.spr.repository;
import javax.annotation.Resource;
import org.springframework.dao.EmptyResultDataAccessException;
import org.springframework.stereotype.Repository;
import com.spr.model.Shop;
@Repository("shopRepository")
public class JpaShopRepository implements ShopRepository {
@Resource(name = "autowiringShopJpaRepository")
AutowiringShopJpaRepository autowiringShopJpaRepository;
public Iterable<Shop> findAll() {
return autowiringShopJpaRepository.findAll();
}
public Shop save(Shop shop) {
autowiringShopJpaRepository.save(shop);
return null;
}
public Shop findOne(int id) throws EmptyResultDataAccessException {
Shop findShop = autowiringShopJpaRepository.findOne(id);
if (findShop == null) {
throw new EmptyResultDataAccessException(String.format("No %s entity with id %s exists!", Shop.class, id), 1);
}
return null;
}
public void delete(Shop deletedShop) {
autowiringShopJpaRepository.delete(deletedShop);
}
}
不直接继承CrudRepository<Shop, Integer>
,而是使用AutowiringShopJpaRepository
继承,之后在JpaShopRepository
中操作。这样能够在JpaShopRepository
类中做一些异常捕获和简单的处理。
package com.spr.validation;
import org.springframework.stereotype.Component;
import org.springframework.validation.Errors;
import org.springframework.validation.ValidationUtils;
import org.springframework.validation.Validator;
import com.spr.model.Shop;
@Component
public class ShopValidator implements Validator {
private final static String EMPLOYEES_NUMBER = "emplNumber";
@Override
public boolean supports(Class<?> clazz) {
return Shop.class.isAssignableFrom(clazz);
}
@Override
public void validate(Object target, Errors errors) {
Shop shop = (Shop) target;
Integer emplNumber = shop.getEmplNumber();
ValidationUtils.rejectIfEmpty(errors, "name", "shop.name.empty");
ValidationUtils.rejectIfEmpty(errors, EMPLOYEES_NUMBER, "shop.emplNumber.empty");
if (emplNumber != null && emplNumber < 1)
errors.rejectValue(EMPLOYEES_NUMBER, "shop.emplNumber.lessThenOne");
}
}
通过继承Validator
方式实现,相比于直接使用hibernate validator
注解麻烦一些。hibernate validator注解方式查阅笔记:【】【】【】
package com.spr.controller;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.ResponseStatus;
import com.spr.exception.ShopNotFound;
import com.spr.model.RestError;
@ControllerAdvice
public class ShopControllerAdvice {
private static final Logger logger = LoggerFactory.getLogger(ShopControllerAdvice.class);
@ExceptionHandler(value = { ShopNotFound.class })
@ResponseStatus(value = HttpStatus.BAD_REQUEST)
@ResponseBody
public HttpEntity<RestError> handleShopNotFoundException(ShopNotFound exception) {
return new ResponseEntity<RestError>(new RestError(exception.getErrorCode(), exception.getMessage()), HttpStatus.BAD_REQUEST);
}
}
package com.spr.controller;
import java.util.List;
import javax.validation.Valid;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.annotation.InitBinder;
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 org.springframework.web.servlet.mvc.support.RedirectAttributes;
import com.spr.exception.ShopNotFound;
import com.spr.model.Shop;
import com.spr.service.ShopService;
import com.spr.validation.ShopValidator;
@Controller
@RequestMapping(value = "/shop")
public class ShopController {
@Autowired
private ShopService shopService;
@Autowired
private ShopValidator shopValidator;
@InitBinder
private void initBinder(WebDataBinder binder) {
binder.setValidator(shopValidator);
}
@RequestMapping(value = "/create", method = RequestMethod.GET)
public ModelAndView newShopPage() {
ModelAndView mav = new ModelAndView("shop-new", "shop", new Shop());
return mav;
}
@RequestMapping(value = "/create", method = RequestMethod.POST)
public ModelAndView createNewShop(@ModelAttribute @Valid Shop shop,
BindingResult result,
final RedirectAttributes redirectAttributes) {
if (result.hasErrors())
return new ModelAndView("shop-new");
ModelAndView mav = new ModelAndView();
String message = "New shop " + shop.getName() + " was successfully created.";
shopService.create(shop);
mav.setViewName("redirect:/index.html");
redirectAttributes.addFlashAttribute("message", message);
return mav;
}
@RequestMapping(value = "/list", method = RequestMethod.GET)
public ModelAndView shopListPage() {
ModelAndView mav = new ModelAndView("shop-list");
List<Shop> shopList = shopService.findAll();
mav.addObject("shopList", shopList);
return mav;
}
@RequestMapping(value = "/edit/{id}", method = RequestMethod.GET)
public ModelAndView editShopPage(@PathVariable Integer id) {
ModelAndView mav = new ModelAndView("shop-edit");
Shop shop = shopService.findById(id);
mav.addObject("shop", shop);
return mav;
}
@RequestMapping(value = "/edit/{id}", method = RequestMethod.POST)
public ModelAndView editShop(@ModelAttribute @Valid Shop shop,
BindingResult result,
@PathVariable Integer id,
final RedirectAttributes redirectAttributes) throws ShopNotFound {
if (result.hasErrors())
return new ModelAndView("shop-edit");
ModelAndView mav = new ModelAndView("redirect:/index.html");
String message = "Shop was successfully updated.";
shopService.update(shop);
redirectAttributes.addFlashAttribute("message", message);
return mav;
}
@RequestMapping(value = "/delete/{id}", method = RequestMethod.DELETE)
public ModelAndView deleteShop(@PathVariable Integer id,
final RedirectAttributes redirectAttributes) throws ShopNotFound {
ModelAndView mav = new ModelAndView("redirect:/index.html");
Shop shop = shopService.delete(id);
String message = "The shop " + shop.getName() + " was successfully deleted.";
redirectAttributes.addFlashAttribute("message", message);
return mav;
}
}
可能pom文件才是最重要的
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>nd.esp.com</groupId>
<artifactId>SpringMvcJpaC3p0ExceptionHandle</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>spr-data</name>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<spring.framework.version>4.2.3.RELEASE</spring.framework.version>
<spring.version>4.2.3.RELEASE</spring.version>
<hibernate.version>4.2.3.Final</hibernate.version>
<hibernate.validator>5.2.4.Final</hibernate.validator>
<logback.version>1.0.13</logback.version>
<slf4j.version>1.7.5</slf4j.version>
<spring.data.jpa.version>1.10.0.RELEASE</spring.data.jpa.version>
</properties>
<build>
<finalName>dpr-data</finalName>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
</dependency>
<!-- <dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.7.3</version>
</dependency> -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.5.0</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>${hibernate.version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>${hibernate.validator}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>${hibernate.version}</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.25</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>${spring.data.jpa.version}</version>
<exclusions>
<exclusion>
<artifactId>spring-asm</artifactId>
<groupId>org.springframework</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- slf4j -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j.version}</version>
</dependency>
<!-- log4jdbc -->
<!-- <dependency>
<groupId>com.googlecode.log4jdbc</groupId>
<artifactId>log4jdbc</artifactId>
<version>1.2</version>
<scope>runtime</scope>
</dependency> -->
</dependencies>
</project>