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我现在被卡住了。autowire无法在jpa tomcat和jersey xml上工作
首先，我制作了从控制台运行的Java应用程序，它是基于注释的配置。
配置下WORKS当运行FROM CONSOLE配置是配置包
@Configuration
public class JpaConfiguration {
@Value("#{dataSource}")
private javax.sql.DataSource dataSource;
@Bean
public Map<String, Object> jpaProperties() {
Map<String, Object> props = new HashMap<String, Object>();
props.put("hibernate.dialect", MySQL5Dialect.class.getName());
props.put("javax.persistence.validation.factory", validator());
props.put("hibernate.ejb.naming_strategy", ImprovedNamingStrategy.class.getName());
return props;
}
@Bean
public LocalValidatorFactoryBean validator() {
return new LocalValidatorFactoryBean();
}
@Bean
public JpaVendorAdapter jpaVendorAdapter() {
HibernateJpaVendorAdapter hibernateJpaVendorAdapter = new HibernateJpaVendorAdapter();
hibernateJpaVendorAdapter.setGenerateDdl(true);
hibernateJpaVendorAdapter.setDatabase(Database.MYSQL);
hibernateJpaVendorAdapter.setShowSql(false);
return hibernateJpaVendorAdapter;
}
@Bean
public PlatformTransactionManager transactionManager() {
return new JpaTransactionManager(
localContainerEntityManagerFactoryBean().getObject());
}
@Bean
public LocalContainerEntityManagerFactoryBean localContainerEntityManagerFactoryBean() {
LocalContainerEntityManagerFactoryBean lef = new LocalContainerEntityManagerFactoryBean();
lef.setDataSource(this.dataSource);
lef.setPackagesToScan("domain");
lef.setJpaPropertyMap(this.jpaProperties());
lef.setJpaVendorAdapter(this.jpaVendorAdapter());
return lef;
}
}
@Configuration
@ImportResource("classpath:root-context.xml")
@PropertySource("classpath:database.properties")
public class DataSourceConfig {
public DataSourceConfig() {}
}
这是我的根的context.xml其中在src /主/资源包
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
xmlns:jpa="http://www.springframework.org/schema/data/jpa"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/jdbc
http://www.springframework.org/schema/jdbc/spring-jdbc-3.1.xsd
http://www.springframework.org/schema/data/jpa
http://www.springframework.org/schema/data/jpa/spring-jpa.xsd">
<context:property-placeholder location="classpath:database.properties" />
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close"
p:driverClass="com.mysql.jdbc.Driver"
p:jdbcUrl="${jdbc.url}"
p:user="${jdbc.username}"
p:password="${jdbc.password}"
p:initialPoolSize="0"
p:minPoolSize="0"
p:maxPoolSize="10"
p:maxIdleTime="300" />
<jpa:repositories base-package="domain" />
<tx:annotation-driven transaction-manager="transactionManager" />
</beans>
我的主要方法
public class ConsoleRun {
public static void main(String[] args) throws Exception {
final Logger log = LoggerFactory
.getLogger("ConsoleRun");
log.info("Starting application");
AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext();
ctx.scan("*");
ctx.refresh();
TestDao testDao = ctx.getBean(TestDao.class);
testDao.testUsersList();
log.info("========GETTING ALL RESULTS==============");
testDao.testResultsList();
}
}
我的服务类用于访问控制台包中的DAO
@Service
public class TestDao {
static final Logger log = LoggerFactory.getLogger("TestDatabase");
@Autowired
private UserDao userDao;
@Autowired
private ResultDao resultDao;
@Autowired
private GameDao gameDao;
public List<User> testUsersList() {
log.info("Getting all users");
List<User> users = userDao.findAll();
for (User u : users) {
log.info("User: {}", u);
}
return users;
}
public void testResultsList() {
List<Result> results = resultDao.findAll();
for (Result r : results) {
log.info("Result: {}", r);
}
}
public User findUserById(Long id) {
return userDao.findById(id);
}
}
上面的代码工作启动时通过Console
下面的代码不起作用
现在我有一个问题，当我想在Tomcat容器中运行它。我正在尝试不同的方式来配置它。
我如何重用Tomcat的JpaConfiguration类和root-context.xml？
这是我目前在我的web.xml
<web-app id="WebApp_ID" version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>Restful Web Application</display-name>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/app-config.xml</param-value>
</context-param>
<servlet>
<servlet-name>jersey-serlvet</servlet-name>
<servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>com.sun.jersey.config.property.packages</param-name>
<param-value>api</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>jersey-serlvet</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
</web-app>
我的应用程序-config.xml中
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/jdbc
http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<jpa:repositories base-package="domain" />
<context:component-scan base-package="domain,api,config" />
<!-- Weaves in transactional advice around @Transactional methods -->
<tx:annotation-driven transaction-manager="transactionManager" />
<bean id="dataSource" class="config.DataSourceConfig" />
<bean id="JpaConfiguration" class="config.DataSourceConfig" />
</beans>
这里是主要的问题，其中userDAO的不自动装配，并抛出空指针例外 Authresource是API包
@Component
@Path("/auth")
public class AuthResource {
@Autowired
UserDao userDao;
@Autowired
TestDao testDao;
@GET
@Path("/users")
@Produces(MediaType.APPLICATION_JSON)
public List<User> getAllUsers() {
return userDao.findAll();
}
}
我剩下的就是工作，我有简单的REST服务类的URL本地主机的工作原理：8080 /应用/ REST /你好/消息
@Path("/hello")
public class HelloResource {
@GET
@Path("/{param}")
public Response getMsg(@PathParam("param") String msg) {
String output = "Jersey say : " + msg;
return Response.status(200).entity(output).build();
}
}
是否有可能为Tomcat直接从Java配置文件加载配置？这是我在app-config.xml中拥有的<context:component-scan base-package="domain,api,config" /> 还有什么地方可能是问题，为什么我在AuthResource类中获得userDao的空指针异常？
你如何获得'AuthResource'的实例？什么叫它以及如何？ –