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;@JsonValuepublic 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 jsonString 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