Spring MVC @InitBinder

作者：範宗雲 来源：原创 发布时间：2015-03-30 归档：springmvc

			@Controller
			@RequestMapping("/calendar")
			public class CalendarController {
				
				/**
				 * 修改日期
				 * 
				 * @param model
				 *            ModelMap
				 * @param date
				 *            日期参数
				 * @return
				 */
				@RequestMapping(value = "/modify", method = GET)
				public String modify(ModelMap model, Date date) {
					DateFormat dateFormat = new SimpleDateFormat("yyyy年MM月dd日");
					model.addAttribute("datetime", dateFormat.format(date));
					return INDEX_PAGE;
				}
				
			}
			

			@Controller
			@RequestMapping("/calendar")
			public class CalendarController {
				
				@InitBinder
				public void dateBinder(WebDataBinder binder) {
					DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
					binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, false));
				}
				
				/**
				 * 修改日期
				 * 
				 * @param model
				 *            ModelMap
				 * @param date
				 *            日期参数
				 * @return
				 */
				@RequestMapping(value = "/modify", method = GET)
				public String modify(ModelMap model, Date date) {
					DateFormat dateFormat = new SimpleDateFormat("yyyy年MM月dd日 HH:mm:ss");
					model.addAttribute("datetime", dateFormat.format(date));
					return INDEX_PAGE;
				}
				
			}
			

			/**
			 * 位置：org.springframework.beans.PropertyEditorRegistrySupport
			 * 
			 * Actually register the default editors for this registry instance.
			 */
			private void createDefaultEditors() {
				this.defaultEditors = new HashMap<Class<?>, PropertyEditor>(64);
		
				// Simple editors, without parameterization capabilities.
				// The JDK does not contain a default editor for any of these target types.
				this.defaultEditors.put(Charset.class, new CharsetEditor());
				this.defaultEditors.put(Class.class, new ClassEditor());
				this.defaultEditors.put(Class[].class, new ClassArrayEditor());
				this.defaultEditors.put(Currency.class, new CurrencyEditor());
				this.defaultEditors.put(File.class, new FileEditor());
				this.defaultEditors.put(InputStream.class, new InputStreamEditor());
				this.defaultEditors.put(InputSource.class, new InputSourceEditor());
				this.defaultEditors.put(Locale.class, new LocaleEditor());
				this.defaultEditors.put(Pattern.class, new PatternEditor());
				this.defaultEditors.put(Properties.class, new PropertiesEditor());
				this.defaultEditors.put(Resource[].class, new ResourceArrayPropertyEditor());
				this.defaultEditors.put(TimeZone.class, new TimeZoneEditor());
				this.defaultEditors.put(URI.class, new URIEditor());
				this.defaultEditors.put(URL.class, new URLEditor());
				this.defaultEditors.put(UUID.class, new UUIDEditor());
				if (zoneIdClass != null) {
					this.defaultEditors.put(zoneIdClass, new ZoneIdEditor());
				}
		
				// Default instances of collection editors.
				// Can be overridden by registering custom instances of those as custom editors.
				this.defaultEditors.put(Collection.class, new CustomCollectionEditor(Collection.class));
				this.defaultEditors.put(Set.class, new CustomCollectionEditor(Set.class));
				this.defaultEditors.put(SortedSet.class, new CustomCollectionEditor(SortedSet.class));
				this.defaultEditors.put(List.class, new CustomCollectionEditor(List.class));
				this.defaultEditors.put(SortedMap.class, new CustomMapEditor(SortedMap.class));
		
				// Default editors for primitive arrays.
				this.defaultEditors.put(byte[].class, new ByteArrayPropertyEditor());
				this.defaultEditors.put(char[].class, new CharArrayPropertyEditor());
		
				// The JDK does not contain a default editor for char!
				this.defaultEditors.put(char.class, new CharacterEditor(false));
				this.defaultEditors.put(Character.class, new CharacterEditor(true));
		
				// Spring's CustomBooleanEditor accepts more flag values than the JDK's default editor.
				this.defaultEditors.put(boolean.class, new CustomBooleanEditor(false));
				this.defaultEditors.put(Boolean.class, new CustomBooleanEditor(true));
		
				// The JDK does not contain default editors for number wrapper types!
				// Override JDK primitive number editors with our own CustomNumberEditor.
				this.defaultEditors.put(byte.class, new CustomNumberEditor(Byte.class, false));
				this.defaultEditors.put(Byte.class, new CustomNumberEditor(Byte.class, true));
				this.defaultEditors.put(short.class, new CustomNumberEditor(Short.class, false));
				this.defaultEditors.put(Short.class, new CustomNumberEditor(Short.class, true));
				this.defaultEditors.put(int.class, new CustomNumberEditor(Integer.class, false));
				this.defaultEditors.put(Integer.class, new CustomNumberEditor(Integer.class, true));
				this.defaultEditors.put(long.class, new CustomNumberEditor(Long.class, false));
				this.defaultEditors.put(Long.class, new CustomNumberEditor(Long.class, true));
				this.defaultEditors.put(float.class, new CustomNumberEditor(Float.class, false));
				this.defaultEditors.put(Float.class, new CustomNumberEditor(Float.class, true));
				this.defaultEditors.put(double.class, new CustomNumberEditor(Double.class, false));
				this.defaultEditors.put(Double.class, new CustomNumberEditor(Double.class, true));
				this.defaultEditors.put(BigDecimal.class, new CustomNumberEditor(BigDecimal.class, true));
				this.defaultEditors.put(BigInteger.class, new CustomNumberEditor(BigInteger.class, true));
		
				// Only register config value editors if explicitly requested.
				if (this.configValueEditorsActive) {
					StringArrayPropertyEditor sae = new StringArrayPropertyEditor();
					this.defaultEditors.put(String[].class, sae);
					this.defaultEditors.put(short[].class, sae);
					this.defaultEditors.put(int[].class, sae);
					this.defaultEditors.put(long[].class, sae);
				}
			}
			

			/**
			 * 位置：org.springframework.beans.propertyeditors.CustomBooleanEditor
			 */
			public class CustomBooleanEditor extends PropertyEditorSupport {

				public static final String VALUE_TRUE = "true";
				public static final String VALUE_FALSE = "false";
			
				public static final String VALUE_ON = "on";
				public static final String VALUE_OFF = "off";
			
				public static final String VALUE_YES = "yes";
				public static final String VALUE_NO = "no";
			
				public static final String VALUE_1 = "1";
				public static final String VALUE_0 = "0";
				
				. . . . . .
			
			}
			

			@Controller
			@RequestMapping("/bool")
			public class BoolController {
				
				/**
				 * 布尔类型数据绑定
				 * 
				 * @param model
				 *            ModelMap
				 * @param auto
				 *            true/false | yes/no | on/off | 1/0
				 * @return
				 */
				@RequestMapping(value = "/autoUpdate", method = GET)
				public String autoUpdate(ModelMap model, Boolean auto) {
					model.addAttribute("autoUpdate", auto);
					return INDEX_PAGE;
				}
				
			}
			

			/**
			 * 位置：org.springframework.beans.propertyeditors.StringArrayPropertyEditor
			 */
			public class StringArrayPropertyEditor extends PropertyEditorSupport {

				/**
				 * Default separator for splitting a String: a comma (",")
				 */
				public static final String DEFAULT_SEPARATOR = ",";
			
			    . . . . . .	
			
			}
			

			@Controller
			@RequestMapping("/array")
			public class ArrayController {
				
				@RequestMapping(value = "/int", method = GET)
				public String handleIntArray(ModelMap model, int[] data) {
					model.put("data", "int : " + Arrays.toString(data));
					return INDEX_PAGE;
				}
				
			}
			

			@Controller
			@RequestMapping("/collection")
			public class CollectionController {
				
				/**
				 * 
				 * @param model
				 *            ModelMap
				 * @param persons
				 *            参数名称需与命令/表单对象封装的集合属性名称一致
				 * @return
				 */
				@RequestMapping(value = "/person", method = GET)
				public String handlePersonCollection(ModelMap model, PersonList persons) {
					model.put("data", "person : " + persons);
					return INDEX_PAGE;
				}
				
				public static class PersonList {
					
					private List<Person> persons;
			
					public List<Person> getPersons() {
						return persons;
					}
			
					public void setPersons(List<Person> persons) {
						this.persons = persons;
					}
			
					@Override
					public String toString() {
						return persons.toString();
					}
					
				}
				
				public static class Person {
					
					private String name;
					
					public Person() {
						
					}
					
					public Person(String name) {
						this.name = name;
					}
			
					public String getName() {
						return name;
					}
			
					public void setName(String name) {
						this.name = name;
					}
			
					@Override
					public String toString() {
						return name;
					}
					
				}
				
			}
			

			@Controller
			@RequestMapping("/object")
			public class ObjectController {
				
				/**
				 * 命令对象数据绑定
				 */
				@RequestMapping(value = "/pojo", method = GET)
				public String handlePojo(ModelMap model, User user, Person person) {
					model.put("user", "user : " + user);
					model.put("person", "person : " + person);
					return INDEX_PAGE;
				}
				
				public static class User {
					
					private String name;
			
					public String getName() {
						return name;
					}
			
					public void setName(String name) {
						this.name = name;
					}
			
					@Override
					public String toString() {
						return name;
					}
					
				}
				
				public static class Person {
					
					private String name;
			
					public String getName() {
						return name;
					}
			
					public void setName(String name) {
						this.name = name;
					}
			
					@Override
					public String toString() {
						return name;
					}
					
				}
				
			}
			

			@Controller
			@RequestMapping("/object")
			public class ObjectController {
				
				/**
				 * 命令对象 user 前缀绑定
				 */
				@InitBinder("user")
				public void userPrefixBinder(WebDataBinder binder) {
					binder.setFieldDefaultPrefix("user.");
				}
				
				/**
				 * 命令对象 person 前缀绑定
				 */
				@InitBinder("person")
				public void personPrefixBinder(WebDataBinder binder) {
					binder.setFieldDefaultPrefix("person.");
				}
				
				/**
				 * 命令对象数据绑定
				 */
				@RequestMapping(value = "/pojo", method = GET)
				public String handlePojo(ModelMap model, User user, Person person) {
					model.put("user", "user : " + user);
					model.put("person", "person : " + person);
					return INDEX_PAGE;
				}
				
			}