我就废话不多说了，大家还是直接看代码吧~
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package test.refect; public class Student { // 姓名 private String name; // 年龄 private String age; // 住址 private String address;
public String getName() { return name; }
public void setName(String name) { this .name = name; }
public String getAge() { return age; }
public void setAge(String age) { this .age = age; }
public String getAddress() { return address; }
public void setAddress(String address) { this .address = address; }
@Override public String toString() { return "Student [name=" + name + ", age=" + age + ", address=" + address + "]" ; }
public void sayHello(Book book){ System.out.println(book.getName()); } } |
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package test.refect; public class Book { private String name; public String getName() { return name; } public void setName(String name) { this .name = name; } } |
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package test.refect; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import com.alibaba.fastjson.JSONObject; public class ExecuteWithFastJson { public static <T> void main(String[] args) {
// Student str --> Student 主类 String str = "test.refect.Student" ; Class<?> clazz = null ; try { clazz = Class.forName(str); } catch (ClassNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); }
// Book实体 str --> Book 参数类 String bookStr = "test.refect.Book" ; Class<?> bookClazz = null ; try { bookClazz = Class.forName(bookStr); } catch (ClassNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); }
// json --> Book 将参数类转为JSONOBJECT String bookJson = "{\"name\":\"Java\"}" ;
// 实例化参数类 T t = (T) JSONObject.parseObject(bookJson, bookClazz);
// 将参数类注入到主类 Method method = null ; try { method = clazz.getDeclaredMethod( "sayHello" , bookClazz); } catch (NoSuchMethodException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (SecurityException e) { // TODO Auto-generated catch block e.printStackTrace(); }
// 执行主类 try { method.invoke(clazz.newInstance(), t); } catch (IllegalAccessException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IllegalArgumentException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (InvocationTargetException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (InstantiationException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } |
补充：使用fastjson 进行jsonObject转实体类对象
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< dependency > < groupId >com.alibaba</ groupId > < artifactId >fastjson</ artifactId > < version >1.2.7</ version > </ dependency > |
首先引入相关jar包，
假设有一个实体类User
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public class User{ private int id; private String name; } |
然后通过fastJson进行类型转换
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public static void main(String[] args){ String userString = "{" id ":1," name "," lz "}" ; JSONObject userJson = JSONObject.parseObject(userString); User user = JSON.toJavaObject(userJson,User. class );
} |
以上为个人经验，希望能给大家一个参考，也希望大家多多支持。如有错误或未考虑完全的地方，望不吝赐教。
原文链接：https://blog.csdn.net/huanglei1234567890/article/details/80542596
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