importcom.google.gson.Gson;// 导入Gson库publicclassStringToJsonExample{publicstaticvoidmain(String[]args){Gsongson=newGson();// 创建Gson对象}} 1. 2. 3. 4. 5. 6. 7. 步骤4:使用Gson解析字符串转换为JSON对象 现在,我们可以定义一个JSON格式的字符串,并使用Gson将其转换为Java对象: publicclassStr...
public static void main( String[] args ) { Gson gson = new Gson(); // Java --> JSON String json = gson.toJson(createArticle()); System.out.println("toJson: "+json); // JSON --> Java Article article = gson.fromJson(json, Article.class); System.out.println("fromJson: "+artic...
public<T> TfromJson(String json, Class<T> classOfT)throwsJsonSyntaxException Let’s see how we can use this method to parse our JSONString, passing theJsonObjectclass as the second parameter: Stringjson="{ \"name\": \"Baeldung\", \"java\": true }";JsonObjectconvertedObject=newGson()....
使用Gson的第一步是创建实例, 想把类转成json字符串, 则调用toJson。先设计下它的api: public class Gson { private static final String JSON_NULL = "null"; public Gson() { } public String toJson(Object src) { if (src == null) { return JSON_NULL; } return toJson(src, src.getClass()...
1. toJson() example Java代码 classTestObjectToJson { privateintdata1 =100; privateString data2 ="hello"; } TestObjectToJson obj =newTestObjectToJson(); Gson gson =newGson(); String json = gson.toJson(obj); 会输出{"data1":100,"data2":"hello"} ...
public static String convertObject2Json(Object object) { gson=new Gson(); return gson.toJson(object); } /** *将Json转换成Java对象 * @param inputStream 要转换成Java对象的inputStream * @param javaBean List获取Map中所包括的javaBean * @param convertFlag 转换类型标识 ...
Gson is a Java library that can be used to convert Java Objects into their JSON representation. It can also be used to convert a JSON string to an equivalent Java object. Gson can work with arbitrary Java objects including pre-existing objects that you do not have source-code of. ...
1. toJson() example class TestObjectToJson { private int data1 = 100; private String data2 = "hello"; } TestObjectToJson obj = new TestObjectToJson(); Gson gson = new Gson(); String json = gson.toJson(obj); 会输出 {"data1":100,"data2":"hello"} ...
1.fromJson() – Convert JSON to java object 2.toJson() – Convert Java object to JSON String Firstly i have create a maven project and add GSON dependency in pom <dependency><groupId>com.google.code.gson</groupId><artifactId>gson</artifactId><version>2.4</version></dependency> ...
fromJson(s, Map.class); } public static Map<String, Object> convert(Object o) { Type type = new TypeToken<Map<String, Object>>() { }.getType(); return JSONObject.parseObject(JSON.toJSONString(o), type); } } 再次测试结果: {timestamp=1668394335647} 可以看到结果仍然保留了原先long格式的...