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1 应用阿里的 FastJson
1.1 我的项目的 pom.xml 依赖
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.58</version>
</dependency>
public static void main(String[] args) {
String jsonString = "{\"_index\":\"book_shop\",\"_type\":\"it_book\",\"_id\":\"1\",\"_score\":1.0," +
"\"_source\":{\"name\": \"Java 编程思维(第 4 版)\",\"author\": \"[ 美] Bruce Eckel\",\"category\": \" 编程语言 \"," +
"\"price\": 109.0,\"publisher\": \" 机械工业出版社 \",\"date\": \"2007-06-01\",\"tags\": [\"Java\", \" 编程语言 \"]}}";
JSONObject object = JSONObject.parseObject(jsonString);
String pretty = JSON.toJSONString(object, SerializerFeature.PrettyFormat, SerializerFeature.WriteMapNullValue,
SerializerFeature.WriteDateUseDateFormat);
System.out.println(pretty);
}
格式化输入后的后果:
阐明: FastJson 通过 Tab 键进行换行后的格式化.
{
"_index":"book_shop",
"_type":"it_book",
"_source":{
"date":"2007-06-01",
"author":"[美] Bruce Eckel",
"price":109.0,
"name":"Java 编程思维(第 4 版)",
"publisher":"机械工业出版社",
"category":"编程语言",
"tags":[
"Java",
"编程语言"
]
},
"_id":"1",
"_score":1.0
}
1.2 应用谷歌 GSON
public static void main(String[] args) {
String jsonString = "{\"_index\":\"book_shop\",\"_type\":\"it_book\",\"_id\":\"1\",\"_score\":1.0," +
"\"_source\":{\"name\": \"Java 编程思维(第 4 版)\",\"author\": \"[ 美] Bruce Eckel\",\"category\": \" 编程语言 \"," +
"\"price\": 109.0,\"publisher\": \" 机械工业出版社 \",\"date\": \"2007-06-01\",\"tags\": [\"Java\", \" 编程语言 \"]}}";
String pretty = toPrettyFormat(jsonString)
System.out.println(pretty);
}
/**
* 格式化输入 JSON 字符串
* @return 格式化后的 JSON 字符串
*/
private static String toPrettyFormat(String json) {JsonParser jsonParser = new JsonParser();
JsonObject jsonObject = jsonParser.parse(json).getAsJsonObject();
Gson gson = new GsonBuilder().setPrettyPrinting().create();
return gson.toJson(jsonObject);
}
阐明: Gson 应用 2 个空格作为换行后的格局转换.
{
"_index": "book_shop",
"_type": "it_book",
"_id": "1",
"_score": 1.0,
"_source": {
"name": "Java 编程思维(第 4 版)",
"author": "[美] Bruce Eckel",
"category": "编程语言",
"price": 109.0,
"publisher": "机械工业出版社",
"date": "2007-06-01",
"tags": [
"Java",
"编程语言"
]
}
}
正文完