@JsonView注解大白话简介说明

JsonView注解简介

@JsonView是jackson json中的一个注解
 Spring mvc也支持JsonView注解
 
JsonView注解功能:
 设置在json字符串输出时
    是否输入及输出指定的字段

1.定义两个接口UserSimpleView和UserDetailView
2.在get方法上使用JsonView设置相应的接口类 
 
public class User {
    public interface UserSimpleView {};
    public interface UserDetailView extends UserSimpleView {};
    private String name;
    private  String password;
    @JsonView(UserSimpleView.class)
    public String getNname (){
        return name;
    }
    public void setName (String name){
        this.name = name;
    }
    @JsonView(UserDetailView.class)
    public String getPassword (){
        return password;
    }
    public void setPassword (String password){
        this.password = password;
    }
}


controller方法使用视图

@RequestMapping(value="/testSimpleView/{id:\\d+}",method=RequestMethod.GET)
    @JsonView(User.UserSimpleView.class)
    public User testSimpleView(@PathVariable(value="id")String number) {
        User user=new User();
        user.setPassword(number);
        user.setName("java265.com--username");
        return user;
    }
    @RequestMapping(value="/testDetailView/{id:\\d+}",method=RequestMethod.GET)
    @JsonView(User.UserDetailView.class)
    public User testDetailView(@PathVariable(value="id")String number) {
        User user=new User();
        user.setPassword(number);
        user.setName("java265.com--username");
        return user;
    }

//testSimpleView 不会返回密码
 {"name":"java265.com--username"}
 
 //testDetailView 会返回密码 
{ {“name”:"java265.com--username",”password”:”88898981212”}}