自定义注解以及反射得到当前的调用方法

矫情吗；* 2022-08-19 11:11 189阅读 0赞

自定义注解以及反射得到当前的调用方法

下面的这个方法很好的，得到现在被调用的方法

StackTraceElement\[\] stacks = new Exception().getStackTrace();  
String methodName = stacks\[1\].getMethodName();  
System.out.println("methodName: "+ methodName);

Main.java

package com.paincupid.springmvc.application.annotation.currClass;
    
    import com.paincupid.springmvc.test.domain.Person;
    
    public class Main {
    	 
        public static void main(String[] args) {
             
           PersonObj po = new PersonObj();
           po.add(new Person());
           
        }
    }

BaseLog.java

package com.paincupid.springmvc.application.annotation.currClass;
    
    import java.lang.annotation.Annotation;
    import java.lang.reflect.InvocationTargetException;
    import java.lang.reflect.Method;
    
    public class BaseLog {
    	
    	public void logger(){
    		
    		Class clazz = this.getClass();
    		String annId = "";
    		try {
    			Object obj = clazz.getConstructor(new Class[]{}).newInstance(new Object[]{});
    			Method[] methods = clazz.getDeclaredMethods();
    			
    			StackTraceElement[] stacks = new Exception().getStackTrace();
    			String methodName = stacks[1].getMethodName();
    			System.out.println("methodName: "+ methodName);
    			
    			for (Method method : methods) {
    				
    				if(method.isAnnotationPresent(OpLogger.class) && method.getName().equals(methodName)){
    					OpLogger logger = method.getAnnotation(OpLogger.class);
    					annId = logger.id();
    					String clazzName = clazz.getName();
    					System.out.println("clazzName: "+clazzName + ", methodName: "+methodName +", annId: "+annId);
    				}
    			}
    			
    			
    			
    			
    		} catch (InstantiationException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		} 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 (NoSuchMethodException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		} catch (SecurityException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
    		
    		
    		
    		
    	}
    }

OpLogger.java

package com.paincupid.springmvc.application.annotation.currClass;
    
    import java.lang.annotation.Documented;  
    import java.lang.annotation.ElementType;  
    import java.lang.annotation.Retention;  
    import java.lang.annotation.RetentionPolicy;  
    import java.lang.annotation.Target;  
      
    @Retention(RetentionPolicy.RUNTIME)//注解会在class中存在，运行时可通过反射获取  
    @Target(ElementType.METHOD)//目标是方法  
    @Documented//文档生成时，该注解将被包含在javadoc中，可去掉  
    public @interface OpLogger {  
          
        public String id() default "-1";  
          
    }

PersonObj.java

package com.paincupid.springmvc.application.annotation.currClass;
    
    import java.util.List;
    
    import com.paincupid.springmvc.test.domain.Person;
    import com.paincupid.springmvc.util.BaseJsonRst;
    
    public class PersonObj extends BaseLog{  
    	  
        public BaseJsonRst<List<Person>> search(String id) {  
        	BaseJsonRst<List<Person>> ret =  new BaseJsonRst<List<Person>>();
        	return ret;
        }
        
    	@OpLogger(id = "123add")
        public BaseJsonRst<List<Person>> add(Person person){
        	BaseJsonRst<List<Person>> ret =  new BaseJsonRst<List<Person>>();
        	logger();
        	return ret;
        }
    	@OpLogger(id = "456delete")
        public BaseJsonRst<List<Person>> delete(Person person){
        	BaseJsonRst<List<Person>> ret =  new BaseJsonRst<List<Person>>();
        	
        	return ret;
        }
        
    	@OpLogger(id = "update789")
        public BaseJsonRst<List<Person>> updatge(Person person){
        	BaseJsonRst<List<Person>> ret =  new BaseJsonRst<List<Person>>();
        	return ret;
        }
    }

Person.java

package com.paincupid.springmvc.test.domain;
    
    import com.paincupid.springmvc.util.Page;
    
    public class Person extends Page{
    	private String id;
    	private String name;
    	private int age;
    	private String tel;
    	private String prov;
    	private String city;
    	private String town;
    	private String sex;
    	private String location;
    	private String company;
    	private String comment;
    	
    	public int getAge() {
    		return age;
    	}
    	public void setAge(int age) {
    		this.age = age;
    	}
    	public String getProv() {
    		return prov;
    	}
    	public void setProv(String prov) {
    		this.prov = prov;
    	}
    	public String getCity() {
    		return city;
    	}
    	public void setCity(String city) {
    		this.city = city;
    	}
    	public String getTown() {
    		return town;
    	}
    	public void setTown(String town) {
    		this.town = town;
    	}
    	public String getSex() {
    		return sex;
    	}
    	public void setSex(String sex) {
    		this.sex = sex;
    	}
    	public String getLocation() {
    		return location;
    	}
    	public void setLocation(String location) {
    		this.location = location;
    	}
    	public String getCompany() {
    		return company;
    	}
    	public void setCompany(String company) {
    		this.company = company;
    	}
    	public String getId() {
    		return id;
    	}
    	public void setId(String id) {
    		this.id = id;
    	}
    	public String getName() {
    		return name;
    	}
    	public void setName(String name) {
    		this.name = name;
    	}
    	public String getComment() {
    		return comment;
    	}
    	
    	public String getTel() {
    		return tel;
    	}
    	public void setTel(String tel) {
    		this.tel = tel;
    	}
    	public void setComment(String comment) {
    		this.comment = comment;
    	}
    	
    }

BaseJsonRst.java

package com.paincupid.springmvc.util;
    
    import java.io.Serializable;
    import java.util.Map;
    
    public class BaseJsonRst<T> extends Page implements Serializable{
    	private static final long serialVersionUID = 1L;
    	private boolean success;	//成功或失败的标志
    	private T result;	//结果集
    	private String message;	//成功或失败的信息
    
    	public boolean isSuccess() {
    		return success;
    	}
    
    	public void setSuccess(boolean success) {
    		this.success = success;
    	}
    
    	public T getResult() {
    		return result;
    	}
    
    	public void setResult(T result) {
    		this.result = result;
    	}
    
    	public String getMessage() {
    		return message;
    	}
    
    	public void setMessage(String message) {
    		this.message = message;
    	}
    
    	public static <T> BaseJsonRst<T> create() {
    		return new BaseJsonRst<T>();
    	}
    	
    	public BaseJsonRst<T> success(T t){
    		this.setResult(t);
    		this.setSuccess(true);
    		return this;
    	}
    	public BaseJsonRst<T> fail(String msg){
    		this.setMessage(msg);
    		this.setSuccess(false);
    		this.setTotalCounts(1);
    		return this;
    	}
    	public static <T> BaseJsonRst<T> newSucc(T t){
    		BaseJsonRst<T> rst = new BaseJsonRst<T>();
    		rst.setResult(t);
    		rst.setSuccess(true);
    		return rst;
    	}
    	public static <T> BaseJsonRst<T> newFail(String msg){
    		BaseJsonRst<T> rst = new BaseJsonRst<T>();
    		return rst.fail(msg);
    	}
    	public BaseJsonRst<T> debug(String di){
    		return this;
    	}
    }

Page.java

package com.paincupid.springmvc.util;
    
    public class Page {
    	private static final long serialVersionUID = 1L;
    	
    	public int totalCounts=0;	//设置分页的总条目数
    	public int pageSize = 20;	//设置每一页的条目数, 默认20条数据
    	public int currentPage = 1;	//设置当前的页码
    	
    	public int getTotalCounts() {
    		return totalCounts;
    	}
    	public void setTotalCounts(int totalCounts) {
    		this.totalCounts = totalCounts;
    	}
    	public int getPageSize() {
    		return pageSize;
    	}
    	public void setPageSize(int pageSize) {
    		this.pageSize = pageSize;
    	}
    	public int getCurrentPage() {
    		return currentPage;
    	}
    	public void setCurrentPage(int currentPage) {
    		this.currentPage = currentPage;
    	}
    	
    	
    	
    }

下载地址： [http://git.oschina.net/paincupid/springmvc][http_git.oschina.net_paincupid_springmvc]

[http_git.oschina.net_paincupid_springmvc]: http://git.oschina.net/paincupid/springmvc