@JsonProperty与@JSONField注解用处

目的：都是为了解决json字符串的某些属性名和JavaBean中的属性名匹配不上的问题。

• JsonProperty

  • public class User {
            
            
    	@JsonProperty("JsonPropertyName")
    	private String name;
    	private String sex;
    	private Integer age;
    	//get/setter与tostring正常字段名：name、sex、age
    }
    

  • @Test
    public void testJsonProperty() throws IOException{
            
            
        User user=new User("shiyu","man",22);
        System.out.println(new ObjectMapper().writeValueAsString(user));
        String str="{\"sex\":\"man\",\"age\":22,\"JsonPropertyName\":\"shiyu\"}";
        System.out.println(new ObjectMapper().readValue(str,User.class).toString());
    }
    
    输出：
    {
            
            "sex":"man","age":22,"JsonPropertyName":"shiyu"}
    User [name=shiyu, sex=man, age=22]
    

• JSONField

  • public class User {
    	@JSONField(name="JSONFieldName")
    	private String name;
    	private String sex;
    	private Integer age;
     	//get/setter与tostring正常字段名：name、sex、age
    }
    

  • @Test
    public void testSONField(){
            
            
        User user=new User("shiyu","man",22);
        System.out.println(JSON.toJSONString(user));
        String str="{\"JSONFieldName\":\"shiyu\",\"age\":22,\"sex\":\"man\"}";
        System.out.println(JSON.parseObject(str, User.class).toString());	
    }
    
    输出
    {
            
            "JSONFieldName":"shiyu","age":22,"sex":"man"}
    User [name=shiyu, sex=man, age=22]