json-lib, com.fasterxml.jackson 둘의 차이점을 비교해본다.
별다른 옵션 없는 심플한 상황이다.
json-lib의 경우 Object형의 NULL 변환에 문제가 있어보인다.
[JsonTest .java]
import static org.hamcrest.Matchers.*;
import static org.junit.Assert.*;
import java.io.IOException;
import org.junit.Test;
import com.fasterxml.jackson.databind.ObjectMapper;
import net.sf.json.JSONObject;
import net.sf.json.JSONSerializer;
public class JsonTest {
@Test
public void test_jsonlib_BeanCase() {
try {
TestBean inBean = new TestBean();
inBean.setA("a Value");
inBean.setB("");
inBean.setC(null);
//inBean.setD();
inBean.setInt11(1);
//inBean.setInt12();
inBean.setInt21(1);
inBean.setInt21(null);
inBean.setBool11(true);
//inBean.setBool12();
inBean.setBool21(true);
inBean.setBool21(null);
JSONObject jsonObj = JSONObject.fromObject( JSONSerializer.toJSON(inBean) );
String jsonStr = jsonObj.toString();
System.out.println("jsonStr: " + jsonStr);
jsonObj = (JSONObject) JSONObject.fromObject(jsonStr);
TestBean outBean = (TestBean) JSONObject.toBean(jsonObj, TestBean.class);
System.out.println(outBean);
assertEquals(inBean.getA(), outBean.getA());
assertEquals(inBean.getB(), outBean.getB());
//assertEquals(inBean.getC(), outBean.getC()); // 문제 소지
//assertEquals(inBean.getD(), outBean.getD()); // 문제 소지
assertEquals(outBean.getC(), "");
assertEquals(outBean.getD(), "");
assertEquals(inBean.getInt11(), outBean.getInt11());
assertEquals(inBean.getInt12(), outBean.getInt12());
//assertEquals(inBean.getInt21(), outBean.getInt21()); // 문제 소지(아예 변환 안됨)
//assertEquals(inBean.getInt22(), outBean.getInt22()); // 문제 소지(아예 변환 안됨)
assertEquals(outBean.getInt21(), new Integer(0));
assertEquals(outBean.getInt22(), new Integer(0));
assertEquals(inBean.isBool11(), outBean.isBool11());
assertEquals(inBean.isBool12(), outBean.isBool12());
//assertEquals(inBean.getBool21(), outBean.getBool21()); // 문제 소지(아예 변환 안됨)
//assertEquals(inBean.getBool22(), outBean.getBool22()); // 문제 소지(아예 변환 안됨)
assertEquals(outBean.getBool21(), new Boolean(false));
assertEquals(outBean.getBool22(), new Boolean(false));
} catch (Exception e) {
System.err.println("-- e: " + e);
}
}
@Test
public void test_jackson_BeanCase() {
try {
ObjectMapper jacksonMapper = new ObjectMapper();
TestBean inBean = new TestBean();
inBean.setA("a Value");
inBean.setB("");
inBean.setC(null);
//inBean.setD();
inBean.setInt11(1);
//inBean.setInt12();
inBean.setInt21(1);
inBean.setInt21(null);
inBean.setBool11(true);
//inBean.setBool12();
inBean.setBool21(true);
inBean.setBool21(null);
System.out.println(inBean);
String jsonStr = jacksonMapper.writeValueAsString(inBean);
System.out.println("jsonStr: " + jsonStr);
TestBean outBean = jacksonMapper.readValue(jsonStr, TestBean.class);
assertEquals(inBean.getA(), outBean.getA());
assertEquals(inBean.getB(), outBean.getB());
assertEquals(inBean.getC(), outBean.getC());
assertEquals(inBean.getD(), outBean.getD());
assertEquals(outBean.getC(), null);
assertEquals(outBean.getD(), null);
assertEquals(inBean.getInt11(), outBean.getInt11());
assertEquals(inBean.getInt12(), outBean.getInt12());
assertEquals(inBean.getInt21(), outBean.getInt21());
assertEquals(inBean.getInt22(), outBean.getInt22());
assertEquals(inBean.isBool11(), outBean.isBool11());
assertEquals(inBean.isBool12(), outBean.isBool12());
assertEquals(inBean.getBool21(), outBean.getBool21());
assertEquals(inBean.getBool22(), outBean.getBool22());
} catch (IOException e) {
System.err.println("-- e: " + e);
}
}
}
[TestBean.java]
import lombok.Getter;
import lombok.Setter;
@Setter @Getter
public class TestBean {
String a;
String b;
String c;
String d;
int int11;
int int12;
Integer int21;
Integer int22;
boolean bool11;
boolean bool12;
Boolean bool21;
Boolean bool22;
}
[build.gradle]
sourceCompatibility='1.7'
dependencies {
//compile group: 'commons-collections', name: 'commons-collections', version: '3.2'
//compile 'org.apache.maven.plugins:maven-war-plugin:+'
compile 'net.sf.json-lib:json-lib:2.4:jdk15@jar'
compile 'com.fasterxml.jackson.dataformat:jackson-dataformat-xml:2.6.4'
compile 'commons-lang:commons-lang:2.6'
compile 'commons-logging:commons-logging:1.2'
compile 'commons-collections:commons-collections:3.2.2'
compile 'commons-beanutils:commons-beanutils:1.9.2'
compile 'net.sf.ezmorph:ezmorph:1.0.6'
testCompile 'junit:junit:4.11'
testCompile 'org.hamcrest:hamcrest-all:1.3'
}
