org.springframework.beans.factory.support.DefaultListableBeanFactory#setConversionService ( )源码实例Demo

@Test
public void optionalPropertyWithValue() {
	DefaultListableBeanFactory bf = new DefaultListableBeanFactory();
	bf.setConversionService(new DefaultConversionService());
	bf.registerBeanDefinition("testBean",
			genericBeanDefinition(OptionalTestBean.class)
					.addPropertyValue("name", "${my.name}")
					.getBeanDefinition());

	MockEnvironment env = new MockEnvironment();
	env.setProperty("my.name", "myValue");

	PropertySourcesPlaceholderConfigurer ppc = new PropertySourcesPlaceholderConfigurer();
	ppc.setEnvironment(env);
	ppc.setIgnoreUnresolvablePlaceholders(true);
	ppc.postProcessBeanFactory(bf);
	assertThat(bf.getBean(OptionalTestBean.class).getName(), equalTo(Optional.of("myValue")));
}
 

@Test
public void optionalPropertyWithoutValue() {
	DefaultListableBeanFactory bf = new DefaultListableBeanFactory();
	bf.setConversionService(new DefaultConversionService());
	bf.registerBeanDefinition("testBean",
			genericBeanDefinition(OptionalTestBean.class)
					.addPropertyValue("name", "${my.name}")
					.getBeanDefinition());

	MockEnvironment env = new MockEnvironment();
	env.setProperty("my.name", "");

	PropertySourcesPlaceholderConfigurer ppc = new PropertySourcesPlaceholderConfigurer();
	ppc.setEnvironment(env);
	ppc.setIgnoreUnresolvablePlaceholders(true);
	ppc.setNullValue("");
	ppc.postProcessBeanFactory(bf);
	assertThat(bf.getBean(OptionalTestBean.class).getName(), equalTo(Optional.empty()));
}
 

@Test
public void testCustomConverter() {
	DefaultListableBeanFactory lbf = new DefaultListableBeanFactory();
	GenericConversionService conversionService = new DefaultConversionService();
	conversionService.addConverter(new Converter<String, Float>() {
		@Override
		public Float convert(String source) {
			try {
				NumberFormat nf = NumberFormat.getInstance(Locale.GERMAN);
				return nf.parse(source).floatValue();
			}
			catch (ParseException ex) {
				throw new IllegalArgumentException(ex);
			}
		}
	});
	lbf.setConversionService(conversionService);
	MutablePropertyValues pvs = new MutablePropertyValues();
	pvs.add("myFloat", "1,1");
	RootBeanDefinition bd = new RootBeanDefinition(TestBean.class);
	bd.setPropertyValues(pvs);
	lbf.registerBeanDefinition("testBean", bd);
	TestBean testBean = (TestBean) lbf.getBean("testBean");
	assertTrue(testBean.getMyFloat().floatValue() == 1.1f);
}
 

@Test
public void optionalPropertyWithValue() {
	DefaultListableBeanFactory bf = new DefaultListableBeanFactory();
	bf.setConversionService(new DefaultConversionService());
	bf.registerBeanDefinition("testBean",
			genericBeanDefinition(OptionalTestBean.class)
					.addPropertyValue("name", "${my.name}")
					.getBeanDefinition());

	MockEnvironment env = new MockEnvironment();
	env.setProperty("my.name", "myValue");

	PropertySourcesPlaceholderConfigurer ppc = new PropertySourcesPlaceholderConfigurer();
	ppc.setEnvironment(env);
	ppc.setIgnoreUnresolvablePlaceholders(true);
	ppc.postProcessBeanFactory(bf);
	assertThat(bf.getBean(OptionalTestBean.class).getName(), equalTo(Optional.of("myValue")));
}
 

@Test
public void optionalPropertyWithoutValue() {
	DefaultListableBeanFactory bf = new DefaultListableBeanFactory();
	bf.setConversionService(new DefaultConversionService());
	bf.registerBeanDefinition("testBean",
			genericBeanDefinition(OptionalTestBean.class)
					.addPropertyValue("name", "${my.name}")
					.getBeanDefinition());

	MockEnvironment env = new MockEnvironment();
	env.setProperty("my.name", "");

	PropertySourcesPlaceholderConfigurer ppc = new PropertySourcesPlaceholderConfigurer();
	ppc.setEnvironment(env);
	ppc.setIgnoreUnresolvablePlaceholders(true);
	ppc.setNullValue("");
	ppc.postProcessBeanFactory(bf);
	assertThat(bf.getBean(OptionalTestBean.class).getName(), equalTo(Optional.empty()));
}
 

@Test
public void testCustomConverter() {
	DefaultListableBeanFactory lbf = new DefaultListableBeanFactory();
	GenericConversionService conversionService = new DefaultConversionService();
	conversionService.addConverter(new Converter<String, Float>() {
		@Override
		public Float convert(String source) {
			try {
				NumberFormat nf = NumberFormat.getInstance(Locale.GERMAN);
				return nf.parse(source).floatValue();
			}
			catch (ParseException ex) {
				throw new IllegalArgumentException(ex);
			}
		}
	});
	lbf.setConversionService(conversionService);
	MutablePropertyValues pvs = new MutablePropertyValues();
	pvs.add("myFloat", "1,1");
	RootBeanDefinition bd = new RootBeanDefinition(TestBean.class);
	bd.setPropertyValues(pvs);
	lbf.registerBeanDefinition("testBean", bd);
	TestBean testBean = (TestBean) lbf.getBean("testBean");
	assertTrue(testBean.getMyFloat().floatValue() == 1.1f);
}
 

@Test
public void testCustomConverter() {
	DefaultListableBeanFactory lbf = new DefaultListableBeanFactory();
	GenericConversionService conversionService = new DefaultConversionService();
	conversionService.addConverter(new Converter<String, Float>() {
		@Override
		public Float convert(String source) {
			try {
				NumberFormat nf = NumberFormat.getInstance(Locale.GERMAN);
				return nf.parse(source).floatValue();
			}
			catch (ParseException ex) {
				throw new IllegalArgumentException(ex);
			}
		}
	});
	lbf.setConversionService(conversionService);
	MutablePropertyValues pvs = new MutablePropertyValues();
	pvs.add("myFloat", "1,1");
	RootBeanDefinition bd = new RootBeanDefinition(TestBean.class);
	bd.setPropertyValues(pvs);
	lbf.registerBeanDefinition("testBean", bd);
	TestBean testBean = (TestBean) lbf.getBean("testBean");
	assertTrue(testBean.getMyFloat().floatValue() == 1.1f);
}
 

@Test
public void testGetFromBeanFactory() {
    DefaultListableBeanFactory beanFactory = new DefaultListableBeanFactory();

    ConversionService conversionService = new DefaultConversionService();

    beanFactory.setConversionService(conversionService);

    ConversionServiceResolver resolver = new ConversionServiceResolver(beanFactory);

    assertEquals(conversionService, resolver.resolve(false));
    assertEquals(conversionService, resolver.resolve(true));
    assertEquals(conversionService, resolver.resolve());
}
 

/**
 * Sets up the bean post processor and conversion service
 *
 * @param beans - The bean factory for the the dictionary beans
 */
public static void setupProcessor(DefaultListableBeanFactory beans) {
    try {
        // UIF post processor that sets component ids
        BeanPostProcessor idPostProcessor = ComponentBeanPostProcessor.class.newInstance();
        beans.addBeanPostProcessor(idPostProcessor);
        beans.setBeanExpressionResolver(new StandardBeanExpressionResolver() {
            @Override
            protected void customizeEvaluationContext(StandardEvaluationContext evalContext) {
                try {
                    evalContext.registerFunction("getService", ExpressionFunctions.class.getDeclaredMethod("getService", new Class[]{String.class}));
                } catch(NoSuchMethodException me) {
                    LOG.error("Unable to register custom expression to data dictionary bean factory", me);
                }
            }
        });

        // special converters for shorthand map and list property syntax
        GenericConversionService conversionService = new GenericConversionService();
        conversionService.addConverter(new StringMapConverter());
        conversionService.addConverter(new StringListConverter());

        beans.setConversionService(conversionService);
    } catch (Exception e1) {
        throw new DataDictionaryException("Cannot create component decorator post processor: " + e1.getMessage(),
                e1);
    }
}