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Convert Hashmap to JSON object in Java (#14110) 

This commit is for Convert Hashmap to JSON object in Java
This commit is contained in:
Bahaa El-Din Helmy 2023-05-24 03:05:20 +03:00 committed by GitHub
parent df15627edc
commit 05a672410d
1 changed files with 33 additions and 42 deletions
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75
core-java-modules/core-java-collections-maps-6/src/test/java/com/baeldung/maptojson/MapToJsonUnitTest.java
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@ -17,49 +17,40 @@ import java.util.HashMap;
import java.util.Map; import java.util.Map;
public class MapToJsonUnitTest { public class MapToJsonUnitTest {
final TypeAdapter<JsonElement> strictAdapter = new Gson().getAdapter(JsonElement.class); String originalJsonData = "{\"CS\":\"Post1\",\"Linux\":\"Post1\",\"Kotlin\":\"Post1\"}";
public boolean isValid(String json) { @Test
try { public void given_HashMapData_whenUsingJackson_thenConvertToJson() throws JsonProcessingException {
strictAdapter.fromJson(json); Map<String, String> data = new HashMap();
} catch (JsonSyntaxException | IOException e) { data.put("CS", "Post1");
return false; data.put("Linux", "Post1");
} data.put("Kotlin", "Post1");
return true; ObjectMapper objectMapper = new ObjectMapper();
} String jacksonData = objectMapper.writeValueAsString(data);
Assertions.assertEquals(jacksonData,originalJsonData);
}
@Test @Test
public void given_HashMapData_whenUsingJackson_thenConvertToJson() throws JsonProcessingException { public void given_HashMapData_whenUsingGson_thenConvertToJson() {
Map<String, String> data = new HashMap(); Map<String, String> data = new HashMap<>();
data.put("CS", "Post1"); data.put("CS", "Post1");
data.put("Linux", "Post1"); data.put("Linux", "Post1");
data.put("Kotlin", "Post1"); data.put("Kotlin", "Post1");
ObjectMapper objectMapper = new ObjectMapper(); Gson gson = new Gson();
String jacksonData = objectMapper.writeValueAsString(data); Type typeObject = new TypeToken<HashMap>() {
Assertions.assertTrue(isValid(jacksonData)); }.getType();
} String gsonData = gson.toJson(data, typeObject);
Assertions.assertEquals(gsonData,originalJsonData);
}
@Test @Test
public void given_HashMapData_whenUsingGson_thenConvertToJson() { public void given_HashMapData_whenOrgJson_thenConvertToJsonUsing() {
Map<String, String> data = new HashMap<>(); Map<String, String> data = new HashMap<>();
data.put("CS", "Post1"); data.put("CS", "Post1");
data.put("Linux", "Post1"); data.put("Linux", "Post1");
data.put("Kotlin", "Post1"); data.put("Kotlin", "Post1");
Gson gson = new Gson(); JSONObject jsonObject = new JSONObject(data);
Type typeObject = new TypeToken<HashMap>() { String orgJsonData = jsonObject.toString();
}.getType(); Assertions.assertEquals(orgJsonData,originalJsonData);
String gsonData = gson.toJson(data, typeObject); }
Assertions.assertTrue(isValid(gsonData));
}
@Test
public void given_HashMapData_whenOrgJson_thenConvertToJsonUsing() {
Map<String, String> data = new HashMap<>();
data.put("CS", "Post1");
data.put("Linux", "Post1");
data.put("Kotlin", "Post1");
JSONObject jsonObject = new JSONObject(data);
String orgJsonData = jsonObject.toString();
Assertions.assertTrue(isValid(orgJsonData));
}
} }