<groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.6</version> </dependency> 2、引用 importcom.alibaba.fastjson.JSONObject; 3、对象转JSON字符串 4、JSON转对象
importcom.fasterxml.jackson.databind.ObjectMapper;publicclassJsonToUserJackson{publicstaticvoidmain(String[]args){StringjsonString="{\"name\":\"张三\", \"age\":30, \"email\":\"zhangsan@example.com\"}";ObjectMapperobjectMapper=newObjectMapper();try{Useruser=objectMapper.readValue(jsonString,User.cl...
public <T> T fromJson(String jsonString, Class<?> parametrized, Class<?>... parameterClasses) { return (T) this.fromJson(jsonString, constructParametricType(parametrized, parameterClasses)); } @SuppressWarnings("unchecked") public <T> List<T> fromJsonToList(String jsonString, Class<T> cla...
public static RequestData toJavaObject(String msg){ if ("".equals(msg)){ return null; } JSONObject jsonObject = JSONObject.parseObject(msg); return jsonObject.toJavaObject(RequestData.class); }
一、引言 json字符串现在是项目中很常用的了,尤其是在写接口返回数据一般都是json格式的。小编最近在看项目中,发现有多处地方用到了java对象转json,但是引用的jar包都是不统一的。...; /** * json工具类 */ public class JsonUtils { // 定义jackson对象 private static final ObjectMapper...MAPPER = new...
String json="{"name":"John","age":30,"address":"123Street","nickname":"Johnny"}";ObjectMapper mapper=new ObjectMapper();Person person=mapper.readValue(json,Person.class);System.out.println("Name: "+person.name);// 输出:Name: JohnSystem.out.println("Age: "+person.age);// 输出:Age:...
com.alibaba.fastjson.JSONException: can not cast to : java.util.Set<java.lang.String> 具体 case import java.util.HashSet; import java.util.Set; import org.junit.Test; import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.JSONObject...
("JSON数据:[{}]转换对象失败",json,e);thrownewRuntimeException(e);}}/*** json转Arr* @param json* @param resultClazz* @return*/publicstatic<T>T[]jsonToArray(Stringjson,Class<T>resultClazz){try{ArrayTypearrayType=mapper.getTypeFactory().constructArrayType(resultClazz);returnmapper.readValue...
// 报错行代码JSONUtil.toBean(SpringUtils.getBean(ILoadCacheUserInfo.class).loadJson(),OperatorLoginResult.class); 堆栈信息 [2023-04-04 18:50:25.568][ERROR][http-nio-8086-exec-5] com.hundsun.sus.framework.exception.GlobalExceptionAdvice - Unsupported source type: class java.lang.String cn.huto...
importcom.fasterxml.jackson.annotation.JsonAnySetter;importcom.fasterxml.jackson.databind.ObjectMapper;importjava.util.HashMap;importjava.util.Map;publicclass Person { private String name;privateint age;// 存储额外的动态属性private Map<String,Object>additionalProperties=new HashMap<>();// 添加动态属性@...