String字符串转java对象 示例代码
时间: 2023-07-25 12:48:05 浏览: 52
假设有一个JSON字符串如下:
```
{
"name": "张三",
"age": 20,
"gender": "男"
}
```
可以通过以下代码将其转换为Java对象:
```java
import com.fasterxml.jackson.databind.ObjectMapper;
public class JsonToObject {
public static void main(String[] args) throws Exception {
String jsonStr = "{\"name\":\"张三\",\"age\":20,\"gender\":\"男\"}";
ObjectMapper objectMapper = new ObjectMapper();
Person person = objectMapper.readValue(jsonStr, Person.class);
System.out.println(person.getName());
System.out.println(person.getAge());
System.out.println(person.getGender());
}
}
class Person {
private String name;
private int age;
private String gender;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
}
```
上述代码使用Jackson库将JSON字符串转换为Java对象,并使用了Person类来描述对象结构。需要注意的是,Person类中的属性名必须要与JSON字符串中的键名相同,否则转换会失败。