fastJSON字符串类型数据中的日期转换为Java bean的日期对象
Person.java
import java.io.Serializable;
import java.util.Date;
public class Person implements Serializable {
private String name;
private Date birthday;
private Date createDate;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
public Date getCreateDate() {
return createDate;
}
public void setCreateDate(Date createDate) {
this.createDate = createDate;
}
}
Test.java
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.alibaba.fastjson.TypeReference;
import java.text.SimpleDateFormat;
public class Test {
public static void main(String[] args) {
String personJSONStr="{\"name\":\"exampleName\",\"birthday\":\"-04-02\",\"createDate\":\".09.22\"}";
JSONObject jsonObject= JSON.parseObject(personJSONStr);
Person person=jsonObject.toJavaObject(new TypeReference(){});
System.out.println(new SimpleDateFormat("yyyMMdd").format(person.getCreateDate()));
}
}
输出:
Connected to the target VM, address: '127.0.0.1:64532', transport: 'socket'
Disconnected from the target VM, address: '127.0.0.1:64532', transport: 'socket'
Exception in thread "main" com.alibaba.fastjson.JSONException: For input string: ".09.22"
at com.alibaba.fastjson.util.TypeUtils.castToJavaBean(TypeUtils.java:1048)
at com.alibaba.fastjson.util.TypeUtils.cast(TypeUtils.java:692)
at com.alibaba.fastjson.util.TypeUtils.cast(TypeUtils.java:858)
at com.alibaba.fastjson.JSON.toJavaObject(JSON.java:1019)
at Test.main(Test.java:11)
Caused by: java.lang.NumberFormatException: For input string: ".09.22"
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Long.parseLong(Long.java:589)
at java.lang.Long.parseLong(Long.java:631)
at com.alibaba.fastjson.util.TypeUtils.castToDate(TypeUtils.java:336)
at com.alibaba.fastjson.util.TypeUtils.castToDate(TypeUtils.java:275)
at com.alibaba.fastjson.util.TypeUtils.cast(TypeUtils.java:747)
at com.alibaba.fastjson.util.TypeUtils.cast(TypeUtils.java:858)
at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.createInstance(JavaBeanDeserializer.java:1180)
at com.alibaba.fastjson.util.TypeUtils.castToJavaBean(TypeUtils.java:1046)
... 4 more
Process finished with exit code 1
解决办法:
修改person类:
import com.alibaba.fastjson.annotation.JSONField;
import java.io.Serializable;
import java.util.Date;
public class Person implements Serializable {
private String name;
@JSONField(format = "yyyy-MM-dd")
private Date birthday;
@JSONField(format = "yyyy.MM.dd")
private Date createDate;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
public Date getCreateDate() {
return createDate;
}
public void setCreateDate(Date createDate) {
this.createDate = createDate;
}
}
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