javabeans

问题 I am trying to map a bean to a CSV file with selected columns (not all columns) but the problem that my bean has other nested beans as attributes. Class Student { @CsvBindByName private String s_id; @CsvBindByName private String name; @CsvRecurse private List<Book> books; } Class Book { @CsvBindByName private String bookName; private String bookAuthor; } I want to map this object to csv file with below format s_id;name;bookName I have tried with below code but not getting bookName in csv

问题 I am looking for configurationOnProperty usage where I can specify to consider more than one value as shown below Eg: @ConditionalOnProperty(value = "test.configname", havingValue = "value1" or "value2") OR I would like to know if it is possible to specify confiugrationOnProperty with condition of havingValue != "value3" Eg: @ConditionalOnProperty(value = "test.configname", havingValue != "value3") Please let me know if there is a way to achieve any one of the above in spring boot

问题 I am looking for configurationOnProperty usage where I can specify to consider more than one value as shown below Eg: @ConditionalOnProperty(value = "test.configname", havingValue = "value1" or "value2") OR I would like to know if it is possible to specify confiugrationOnProperty with condition of havingValue != "value3" Eg: @ConditionalOnProperty(value = "test.configname", havingValue != "value3") Please let me know if there is a way to achieve any one of the above in spring boot

问题 in definition it is said "java bean encapsulates many objects into one object(Bean). what does "many objects" here mean and how they are encapsulated into one object by java beans? 来源： https://stackoverflow.com/questions/48117896/how-does-java-bean-encapsulate-many-objects-into-one

问题 in definition it is said "java bean encapsulates many objects into one object(Bean). what does "many objects" here mean and how they are encapsulated into one object by java beans? 来源： https://stackoverflow.com/questions/48117896/how-does-java-bean-encapsulate-many-objects-into-one

问题 in definition it is said "java bean encapsulates many objects into one object(Bean). what does "many objects" here mean and how they are encapsulated into one object by java beans? 来源： https://stackoverflow.com/questions/48117896/how-does-java-bean-encapsulate-many-objects-into-one

问题 I'm tryng to do some JUnit persistance tests. I'm using Spring MVC and Hibernate. I have my TestConfig file looking like this: @ComponentScan({"src.main.java.ar.edu.itba.paw.persistence", }) @Configuration public class TestConfig { @Bean public DataSource dataSource() { final SimpleDriverDataSource ds = new SimpleDriverDataSource(); ds.setDriverClass(JDBCDriver.class); ds.setUrl("jdbc:hsqldb:mem:paw"); ds.setUsername("ha"); ds.setPassword(""); return ds; } @Bean public

问题 I am learning about Struts2 and it's not completely clear to me how and when to use the tag <jsp:UseBean> vs the Struts tag. I found an article outlining the differences but them but there is not any example provided. http://struts.apache.org/development/1.x/struts-taglib/tlddoc/bean/define.html The <bean:define> tag differs from <jsp:useBean> in several ways, including: Unconditionally creates (or replaces) a bean under the specified identifier. Can create a bean with the value returned by a

问题 I am learning about Struts2 and it's not completely clear to me how and when to use the tag <jsp:UseBean> vs the Struts tag. I found an article outlining the differences but them but there is not any example provided. http://struts.apache.org/development/1.x/struts-taglib/tlddoc/bean/define.html The <bean:define> tag differs from <jsp:useBean> in several ways, including: Unconditionally creates (or replaces) a bean under the specified identifier. Can create a bean with the value returned by a

问题 I am working with Spring java code written by someone else. I want to reference a bean that's created by annotation (of field classABC): @Component public class ClassService { @Autowired ClassABC classABC; public interface ClassABC @Repository public class ClassABCImpl extends BaseABC implements ClassABC The following code tries to get a reference to the ClassABC bean by name, but does not work: ClassABC classABC = ApplicationContext.getBean("classABC"); However, the following code that