Jackson 注解 -- 自定义输出格式

– Start

点击此处观看本系列配套视频。

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如果你想完全定义输出的格式，我们可以使用注解 @JsonValue

package shangbo.jackson.demo14;

import org.apache.commons.lang3.builder.ToStringBuilder;

import com.fasterxml.jackson.annotation.JsonValue;

public class Person {
	private String firstname;
	private String lastname;

	@JsonValue
	public String toString() {
		return ToStringBuilder.reflectionToString(this);
	}

	public String getFirstname() {
		return firstname;
	}

	public void setFirstname(String firstname) {
		this.firstname = firstname;
	}

	public String getLastname() {
		return lastname;
	}

	public void setLastname(String lastname) {
		this.lastname = lastname;
	}

}

package shangbo.jackson.demo14;

import com.fasterxml.jackson.databind.ObjectMapper;

public class App {
	public static void main(String[] args) throws Exception {
		// 实例化 ObjectMapper 对象
		ObjectMapper objectMapper = new ObjectMapper();

		// 将对象转成 json
		String json = objectMapper.writeValueAsString(newPerson());
		System.out.println(json);
	}

	private static Person newPerson() {
		Person shangbo = new Person();
		shangbo.setFirstname("Bo");
		shangbo.setLastname("Shang");

		return shangbo;
	}
}

– 更多参见：Jackson 精萃
– 声 明：转载请注明出处
– Last Updated on 2019-05-26
– Written by ShangBo on 2019-05-26
– End