import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.JSONObject; import com.alibaba.fastjson.serializer.SerializerFeature; import com.jiepu.rpc.thrift.server.entity.User; import java.util.ArrayList; import java.util.List; import java.util.UUID; /** * Created by Administrator on 2016/1/5. */ public class TestFastJson { public static void main(String[] args){ List<User> list=new ArrayList<>(); for(int i=0;i<3;i++) { User entity=new User(); entity.setId((long) i); entity.setPassword(""); entity.setUsername("来自中文"+i); entity.setToken(UUID.randomUUID().toString()); //list.add(entity); list.add(0,entity); } String json=JSON.toJSONString(list); System.out.println(json); /* QuoteFieldNames———-输出key时是否使用双引号,默认为true WriteMapNullValue——–是否输出值为null的字段,默认为false WriteNullNumberAsZero—-数值字段如果为null,输出为0,而非null WriteNullListAsEmpty—–List字段如果为null,输出为[],而非null WriteNullStringAsEmpty—字符类型字段如果为null,输出为”“,而非null WriteNullBooleanAsFalse–Boolean字段如果为null,输出为false,而非null */ //使用双引号 System.out.println(JSONObject.toJSONString(list,SerializerFeature.QuoteFieldNames)); //输出值为null的字段 System.out.println(JSONObject.toJSONString(list,SerializerFeature.WriteMapNullValue)); System.out.println(JSONObject.toJSONString(list,SerializerFeature.WriteNullNumberAsZero)); System.out.println(JSONObject.toJSONString(new ArrayList<>(),SerializerFeature.WriteNullListAsEmpty)); System.out.println(JSONObject.toJSONString(list,SerializerFeature.WriteNullStringAsEmpty)); System.out.println(JSONObject.toJSONString(list,SerializerFeature.SortField)); } }
import com.alibaba.fastjson.annotation.JSONField; public class User { private Long id; @JSONField(serialize = false) private String username; private String password; /**动态授权令牌*/ private String token; /**过期时间 */ private String expired; public Long getId() { return id; } public void setId(Long id) { this.id = id; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String getToken() { return token; } public void setToken(String token) { this.token = token; } public String getExpired() { return expired; } public void setExpired(String expired) { this.expired = expired; } }
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