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这是我的场景。我的项目正在使用 Spring (3.2.3.RELEASE)、Struts2 (2.3.14.3) 和 JPA (2.0)。我们有一个包含各种实体和公共(public)类的项目(我们称之为项目 A)。我们使用项目 A 生成一个 .jar 文件,以便其他项目可以使用这些类。在项目 A 中,我们使用了 Spring 原型(prototype):@Component。 @Service 或 @Repository 用于我们希望 Spring 注入(inject)的那些类。每当我们尝试从 jar 中注入(inject) bean 时,都会收到类似于以下内容的错误:
No qualifying bean of type [com.ceiwc.bc.commonsql.service.CommonSQLService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
Could not autowire field: private com.ceiwc.bc.commonsql.service.CommonSQLService com.ceiwc.ma.mvc.action.LoginAction.commonSQLService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.ceiwc.bc.commonsql.service.CommonSQLService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
Error creating bean with name 'com.ceiwc.ma.mvc.action.LoginAction': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.ceiwc.bc.commonsql.service.CommonSQLService com.ceiwc.ma.mvc.action.LoginAction.commonSQLService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.ceiwc.bc.commonsql.service.CommonSQLService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
Unable to instantiate Action, com.ceiwc.ma.mvc.action.LoginAction, defined for 'doLogin' in namespace '/Login'Error creating bean with name 'com.ceiwc.ma.mvc.action.LoginAction': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.ceiwc.bc.commonsql.service.CommonSQLService com.ceiwc.ma.mvc.action.LoginAction.commonSQLService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.ceiwc.bc.commonsql.service.CommonSQLService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
package com.zzz.bc.config;
@Configuration
@ImportResource({"/WEB-INF/spring/spring-config.xml"})
@ComponentScan(basePackages = "com.zzz")
public class ApplicationConfig {
@Bean
public JavaMailSender mailSender() {
JavaMailSenderImpl mailSender = new JavaMailSenderImpl();
mailSender.setHost(${app.mail.host});
return mailSender;
}
}
package com.zzz.bc.config;
@Configuration
@EnableTransactionManagement
@Import(ApplicationConfig.class)
@PropertySource({"classpath:db.properties"})
public class DataConfig {
@Autowired
Environment environment;
@Bean
public PlatformTransactionManager transactionManager() {
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(entityManagerFactoryBean().getObject());
return transactionManager;
}
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactoryBean() {
String[] packagesToScan =
{environment.getProperty("db.packagesToScan1"), environment.getProperty("db.packagesToScan2")};
Map<String, Object> jpaProperties = new HashMap<String, Object>();
jpaProperties.put("eclipselink.weaving", "false");
LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
entityManagerFactoryBean.setDataSource(dataSource());
entityManagerFactoryBean.setPackagesToScan(packagesToScan);
entityManagerFactoryBean.setLoadTimeWeaver(new InstrumentationLoadTimeWeaver());
entityManagerFactoryBean.setJpaVendorAdapter(vendorAdapter());
entityManagerFactoryBean.setJpaPropertyMap(jpaProperties);
return entityManagerFactoryBean;
}
@Bean
public DriverManagerDataSource dataSource() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName(environment.getProperty("db.driver"));
dataSource.setUrl(environment.getProperty("db.url"));
dataSource.setUsername(environment.getProperty("db.username"));
dataSource.setPassword(environment.getProperty("db.password"));
return dataSource;
}
@Bean
public JpaVendorAdapter vendorAdapter() {
EclipseLinkJpaVendorAdapter vendorAdapter = new EclipseLinkJpaVendorAdapter();
vendorAdapter.setDatabase(Database.ORACLE);
vendorAdapter.setShowSql(true);
return vendorAdapter;
}
@Bean
public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
return new PersistenceExceptionTranslationPostProcessor();
}
}
@SuppressWarnings("rawtypes")
@Service("CommonSQLService")
public class CommonSQLServiceImpl implements CommonSQLService {
@Autowired
CommonSQLDao cdao;
@Override
public Policy getPolicyById(String policyNo) {
return cdao.getPolicyById(policyNo);
}
@Override
public Policy getPolicy(Policy parmRec) {
return cdao.getPolicy(parmRec);
}
@Override
public ArrayList<Policy> getPolicies(String policyNo) {
return cdao.getPolicies(policyNo);
}
@Override
public List<Policy> getPolicies(Policy parmRec){
return cdao.getPolicies(parmRec);
}
}
package com.zzz.ma.mvc.action;
@SuppressWarnings("serial")
@Component
@Scope("prototype")
@Namespace("/Login")
public class LoginAction extends ActionParent {
@Autowired
private IUserService userService; //Contained in project B
@Autowired
private CommonSQLService commonSQLService; //What's autowired from project A
private User user;
private String updateFlag;
private Integer parentMenuId;
private IwifWebNavmenuItem record;
public static final String LOGIN_STR = "login";
@Action(value = "doLogin", results = { @Result(name = "success", location = "/pages/login.jsp") })
public String login() {
updateFlag = "Y";
return SUCCESS;
}
@Action(value = "validate", results = {
@Result(name = "success", location = "/BrowseOptions/showOptions", type = "redirect"),
@Result(name = "login", location = "/pages/login.jsp") })
public String validateUser() {
if (updateFlag == null) {
session.remove(LOGIN_STR);
return LOGIN;
}
if (userService.validateUser(user.getUsername(), user.getPassword()) == null) {
addActionError(getText("invalid.user"));
return LOGIN;
}
session.put(LOGIN_STR, user.getUsername());
return SUCCESS;
}
@Action(value = "logout", results = { @Result(name = "success", location = "/pages/login.jsp") })
public String logout() {
updateFlag = StringUtils.EMPTY;
session.invalidate();
return SUCCESS;
}
}
最佳答案
更改@Service("CommonSQLService")
至@Service("commonSQLService")
或者您可以使用 @Service
如果您没有实现 CommonSQLService
其他任何地方的接口(interface)。
关于Spring Autowire 失败,找不到类型的合格 bean 依赖错误,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/18469641/
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