Jackson was expecting double-quote to start field name

使用 mapper.configure(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES, true); 配置为允许字段名不加双引号。

package com.mkyong.jsonexample;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import org.codehaus.jackson.JsonParseException;
import org.codehaus.jackson.JsonParser;
import org.codehaus.jackson.map.JsonMappingException;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.type.TypeReference;

public class JsonMapExample {
    public static void main(String[] args) {
        String json = "{name:\"mkyong\"}";

        Map<String,String> map = new HashMap<String,String>();
        ObjectMapper mapper = new ObjectMapper();

        mapper.configure(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES, true);

        try {
            map = mapper.readValue(json, new TypeReference<HashMap<String,String>>(){});
            System.out.println(map);
        } catch (JsonParseException e) {
            e.printStackTrace();
        } catch (JsonMappingException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

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原文：Jackson : was expecting double-quote to start field name

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