@InitBinder

类型转换：

 

请求url：  http://localhost:8080/SSHDemo2/stu/pro?s=zk,19

传入参数 s=zk,19   转换为Student

 

public class Student {



	private String name;

	private int age;

	public String getName() {

		return name;

	}

	public void setName(String name) {

		this.name = name;

	}

	public int getAge() {

		return age;

	}

	public void setAge(int age) {

		this.age = age;

	}

	

	@Override

	public String toString() {

		return "toString  -  name="+name+";age="+age;

	}

	

}

 

public class StudentEditor extends PropertyEditorSupport{



	

	@Override

	public void setAsText(String text) throws IllegalArgumentException {

		Student s = new Student();

		String[] attrs = text.split(",");

		if(attrs.length==1){

			s.setName(attrs[0]);

		}

		

		if(attrs.length==2){

			s.setName(attrs[0]);

			s.setAge(Integer.parseInt(attrs[1]));

		}

		System.out.println("setAsText");

		setValue(s);

	}

	

	

	@Override

	public String getAsText() {

		System.out.println("getAsText");

		return getValue().toString();

	}

}

 

@Controller

@RequestMapping("/stu")

public class StudentController {



       @RequestMapping("/pro")

	public String stuPropertyEditor(@RequestParam("s") Student s){

		System.out.println("name="+s.getName()+";age="+s.getAge());

		return "success";

	}

	

	@InitBinder

	public void initBinder(WebDataBinder binder){

		System.out.println("init..");

		binder.registerCustomEditor(Student.class, new StudentEditor());

	}



}

 

此时也可以不要@InitBinder，因为bean为Student则StudentEditor会默认为它的属性编辑器