gistfile1.java

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package org.me.modelmapper;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.gson.JsonElement;
import com.google.gson.JsonParser;
import java.util.ArrayList;
import java.util.HashMap;
import org.modelmapper.ModelMapper;
import org.modelmapper.PropertyMap;
import org.modelmapper.convention.MatchingStrategies;
import org.modelmapper.gson.JsonElementValueReader;
import org.testng.Assert;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;

public class JsonModelMapperTest {

  
    private ModelMapper modelMapper;


    public JsonModelMapperTest() {
    }


    public static class Foo {

        public String a;
        public String b;

        public String getA() {
            return a;
        }

        public void setA(String a) {
            this.a = a;
        }

        public String getB() {
            return b;
        }

        public void setB(String b) {
            this.b = b;
        }

    }


    @BeforeMethod
    public void setUpMethod() throws Exception {
        modelMapper = new ModelMapper();
        modelMapper.getConfiguration()
                .setFieldMatchingEnabled(true);
    }

    @Test
    public void shouldMapHashMapToFoo() {
        HashMap<String, String> map = new HashMap<>();
        map.put("a", "aaaa");
        map.put("b", "bbbb");

        PropertyMap<HashMap<String, String>, Foo> fooMap = new PropertyMap<HashMap<String, String>, JsonModelMapperTest.Foo>() {

            @Override
            protected void configure() {
                map(source.get("a"), destination.a);
                map(source.get("b"), destination.b);
            }

        };

        modelMapper.addMappings(fooMap);

        Foo foo = modelMapper.map(map, Foo.class);

        Assert.assertEquals(foo.getA(), map.get("a"));
        Assert.assertEquals(foo.getB(), map.get("b"));

    }

}