弹簧消息转换JSON字符串映射(spring messaging converting json s

使用Spring集成和我有一个JSON字符串（见下文）和下面的代码：

public SomethingBean convert(Message<?> inMessage) {...}

JSON字符串

{
    "addressIdentification": {
        "identifierType": "nemtom",
        "addressIdentifier": "eztse"
    },
    "postcode": "BH1EH",
    "country": "5"
}

我想用下面的方法签名：

public SomethingBean convert(Message<Map<String, ?>> inMessage) {...}

是否有可能将JSON字符串自动地图转换？

谢谢，V.

Answer 1:

只需使用Spring集成开箱组件：

<json-to-object-trnsfrormer type="java.util.Map"/>

之前你SomethingBean调用。

Answer 2:

使用任何JSON解析库如GSON或杰克逊并将其转换成Java对象。

GSON：

String jsonString = "{\"addressIdentification\":{\"identifierType\":\"nemtom\",\"addressIdentifier\":\"eztse\"},\"postcode\":\"BH1EH\",\"country\":\"5\"}";

Type type = new TypeToken<Map<String, Object>>() {}.getType();
Map<String, Object> data = new Gson().fromJson(jsonString, type);
System.out.println(new GsonBuilder().setPrettyPrinting().create().toJson(data));

for(Map.Entry<String, Object> entry:data.entrySet()){
    System.out.println(entry.getKey()+":"+entry.getValue());
}

杰克逊：

String jsonString = "{\"addressIdentification\":{\"identifierType\":\"nemtom\",\"addressIdentifier\":\"eztse\"},\"postcode\":\"BH1EH\",\"country\":\"5\"}";

JSONObject jsonObject = new JSONObject(jsonString);
System.out.println(jsonObject);

JSONObject addressIdentification = jsonObject.getJSONObject("addressIdentification");
System.out.println("identifierType:" + addressIdentification.get("identifierType"));
System.out.println("addressIdentifier:" + addressIdentification.get("addressIdentifier"));

System.out.println("postcode:" + jsonObject.get("postcode"));
System.out.println("country:"+jsonObject.get("country"));

输出：

identifierType:nemtom
addressIdentifier:eztse
postcode:BH1EH
country:5

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文章来源: spring messaging converting json string to map