String a = "[{"id":"010003C9","IsOnline":1,"RunningDistance":17223.0}]" 怎么转化成对象
时间: 2023-11-14 21:08:01 浏览: 32
以下是将字符串转化为对象的代码示例:
```python
import json
a = '[{"id":"010003C9","IsOnline":1,"RunningDistance":17223.0}]'
obj = json.loads(a)
print(obj)
```
输出结果为:
```
[{'id': '010003C9', 'IsOnline': 1, 'RunningDistance': 17223.0}]
```
其中,json.loads()函数可以将JSON格式的字符串转化为Python对象。在这个例子中,我们将字符串a转化为了一个包含一个字典的列表对象obj。
相关问题
String a = "[{"id":"010003C9","IsOnline":1,"RunningDistance":17223.0}]" 怎么转化成对象 java
以下是将字符串转换为Java对象的代码示例:
```java
import com.fasterxml.jackson.databind.ObjectMapper;
public class MyClass {
public static void main(String[] args) {
String a = "[{\"id\":\"010003C9\",\"IsOnline\":1,\"RunningDistance\":17223.0}]";
ObjectMapper objectMapper = new ObjectMapper();
try {
MyClass[] myClasses = objectMapper.readValue(a, MyClass[].class);
for (MyClass myClass : myClasses) {
System.out.println(myClass.getId());
System.out.println(myClass.getIsOnline());
System.out.println(myClass.getRunningDistance());
}
} catch (Exception e) {
e.printStackTrace();
}
}
private String id;
private int isOnline;
private double runningDistance;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public int getIsOnline() {
return isOnline;
}
public void setIsOnline(int isOnline) {
this.isOnline = isOnline;
}
public double getRunningDistance() {
return runningDistance;
}
public void setRunningDistance(double runningDistance) {
this.runningDistance = runningDistance;
}
}
```
在这个示例中,我们使用了Jackson库来将JSON字符串转换为Java对象。我们首先定义了一个包含id、isOnline和runningDistance属性的MyClass类。然后,我们使用ObjectMapper类的readValue()方法将JSON字符串转换为MyClass对象数组。最后,我们遍历数组并打印每个对象的属性。
std::string s = std::to_string(str.size());
std::string s = std::to_string(str.size());这行代码将字符串str的长度转换为std::string类型的s。根据给出的代码片段,str是一个std::string类型的对象。std::string的size()函数返回字符串的长度,而std::to_string()函数将整数转换为std::string类型。因此,该行代码将字符串str的长度转换为std::string类型的s。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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