Java BeanWrapperImpl.setPropertyValue方法代码示例

import org.springframework.beans.BeanWrapperImpl; //导入方法依赖的package包/类
@Test
public void testBeanWrapperCreatesNewNestedMaps() throws Exception {
	TargetWithNestedMap target = new TargetWithNestedMap();
	BeanWrapperImpl wrapper = new BeanWrapperImpl(target);
	wrapper.setAutoGrowNestedPaths(true);
	// For a nested map, you only have to get an element of it for it to be created
	wrapper.getPropertyValue("nested[foo]");
	// To decide what type to create for nested[foo] we need to look ahead and see
	// what the user is trying to bind it to, e.g. if nested[foo][bar] then it's a map
	wrapper.setPropertyValue("nested[foo]", new LinkedHashMap<String, Object>());
	// But it might equally well be a collection, if nested[foo][0]
	wrapper.setPropertyValue("nested[foo]", new ArrayList<Object>());
	// Then it would have to be actually bound to get the list to auto-grow
	wrapper.setPropertyValue("nested[foo][0]", "bar");
	assertThat(wrapper.getPropertyValue("nested[foo][0]")).isNotNull();
}
 

import org.springframework.beans.BeanWrapperImpl; //导入方法依赖的package包/类
@Test
public void testBeanWrapperCreatesNewMapEntries() throws Exception {
	TargetWithNestedMapOfBean target = new TargetWithNestedMapOfBean();
	BeanWrapperImpl wrapper = new BeanWrapperImpl(target);
	wrapper.setAutoGrowNestedPaths(true);
	// For a nested map, you only have to get an element of it for it to be created
	wrapper.getPropertyValue("nested[foo]");
	wrapper.setPropertyValue("nested[foo].foo", "bar");
	assertThat(wrapper.getPropertyValue("nested")).isNotNull();
	assertThat(wrapper.getPropertyValue("nested[foo]")).isNotNull();
}
 

import org.springframework.beans.BeanWrapperImpl; //导入方法依赖的package包/类
@Test
public void testBeanWrapperCreatesNewObjects() throws Exception {
	TargetWithNestedObject target = new TargetWithNestedObject();
	BeanWrapperImpl wrapper = new BeanWrapperImpl(target);
	wrapper.setAutoGrowNestedPaths(true);
	// For a nested object, you have to set a property for it to be created
	wrapper.setPropertyValue("nested.foo", "bar");
	wrapper.getPropertyValue("nested");
	assertThat(wrapper.getPropertyValue("nested")).isNotNull();
}
 

import org.springframework.beans.BeanWrapperImpl; //导入方法依赖的package包/类
@Test
public void testBeanWrapperLists() throws Exception {
	TargetWithNestedMapOfListOfString target = new TargetWithNestedMapOfListOfString();
	BeanWrapperImpl wrapper = new BeanWrapperImpl(target);
	wrapper.setAutoGrowNestedPaths(true);
	TypeDescriptor descriptor = wrapper.getPropertyTypeDescriptor("nested");
	assertThat(descriptor.isMap()).isTrue();
	wrapper.getPropertyValue("nested[foo]");
	assertThat(wrapper.getPropertyValue("nested")).isNotNull();
	// You also need to bind to a value here
	wrapper.setPropertyValue("nested[foo][0]", "bar");
	wrapper.getPropertyValue("nested[foo][0]");
	assertThat(wrapper.getPropertyValue("nested[foo]")).isNotNull();
}