– Start

点击此处观看本系列配套视频。

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如果你的类没有 setter 方法，我们也可以使用注解 @JsonCreator 修饰构造器。

package shangbo.jackson.demo15; import org.apache.commons.lang3.builder.ToStringBuilder; import com.fasterxml.jackson.annotation.JsonCreator; import com.fasterxml.jackson.annotation.JsonProperty; public class Person { private String firstname; private String lastname; @JsonCreator public Person( @JsonProperty("firstname") String firstname, @JsonProperty("lastname") String lastname) { this.firstname = firstname; this.lastname = lastname; } public String toString() { return ToStringBuilder.reflectionToString(this); } public String getFirstname() { return firstname; } public String getLastname() { return lastname; } } package shangbo.jackson.demo15; 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(); // json 消息 String json = "{\"firstname\":\"Bo\",\"lastname\":\"Shang\"}"; // 将 json 转成对象 Person shangbo = objectMapper.readValue(json, Person.class); System.out.println(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