最近在负责邮件服务,里面会涉及到很多Email模板,这里我使用到了java的模板引擎:jetbrick-template,需要使用Map集合一个个往里面设置值,然后调用模板方法,进行替换。实体类一个个往Map中设置值,感觉非常麻烦,工作效率极低,此时想到了使用Java中的反射获得实体类中的值,工具类如下
java 模板引擎点我直达
工具类
package com.ybchen.springbootohmyemail.convert;
import com.sun.tools.javac.code.Attribute;
import com.ybchen.springbootohmyemail.entity.EmailData;
import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Map;
/**
* @ClassName:ReplaceEmailTemplate
* @Description:邮件模板转换工具
* @Author:chenyb
* @Date:2020/11/30 6:52 下午
* @Versiion:1.0
*/
public class ReplaceEmailTemplate {
/**
* 实体类转Map
* @param clazz 类
* @param obj 实体类
* @param <T> 实体类
* @return
*/
public static<T> Map<String,Object> replaceContext(Class<?> clazz,T obj) {
Map<String,Object> map=new HashMap<String,Object>();
Field[] declaredFields = clazz.getDeclaredFields();
for(Field f:declaredFields){
try {
//打开可见性,要不然获取不到值
f.setAccessible(true);
map.put(f.getName(),f.get(obj));
} catch (IllegalAccessException e) {
e.printStackTrace();
}finally {
//关闭可见性
f.setAccessible(false);
}
}
return map;
}
}
调用
EmailData emailData = new EmailData("ybchen", "199999999", "www.baidu.com");
Map<String, Object> map = ReplaceEmailTemplate.replaceContext(EmailData.class,emailData);
package com.ybchen.springbootohmyemail.entity;
import java.io.Serializable;
/**
* @ClassName:EmailData
* @Description:TODO
* @Author:chenyb
* @Date:2020/11/30 6:56 下午
* @Versiion:1.0
*/
public class EmailData implements Serializable {
private String username;
private String email;
private String url;
public EmailData() {
}
public EmailData(String username, String email, String url) {
this.username = username;
this.email = email;
this.url = url;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
@Override
public String toString() {
return "EmailData{" +
"username='" + username + '\'' +
", email='" + email + '\'' +
", url='" + url + '\'' +
'}';
}
}
作者:陈彦斌