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100 lines
2.3 KiB
100 lines
2.3 KiB
package com.yf.exam.aspect.utils;
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import com.alibaba.fastjson.JSON;
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import com.yf.exam.core.api.ApiError;
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import com.yf.exam.core.api.ApiRest;
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import lombok.extern.log4j.Log4j2;
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import org.springframework.stereotype.Component;
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import javax.servlet.http.HttpServletResponse;
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import java.io.IOException;
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import java.lang.reflect.Field;
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/**
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* 注入工具类
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* @author bool
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* @date 2019-07-17 09:32
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*/
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@Log4j2
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@Component
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public class InjectUtils {
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/**
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* 给对象字段赋值
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*
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* @param object 赋值的对象
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* @param value 值
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* @param fields 字段
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* @throws Exception 异常
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*/
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public void setValue(Object object, Object value, String... fields) throws Exception {
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//设置同类的属性
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for (String fieldName : fields) {
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//获取当前
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Field field = this.getFiled(object.getClass(), fieldName);
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if(field == null){
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continue;
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}
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field.setAccessible(true);
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field.set(object, value);
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}
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}
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/**
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* 获取字段名对应的字段
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*
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* @param clazz 目标类
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* @param fieldName 字段名
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*/
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private Field getFiled(Class clazz, String fieldName) {
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System.out.println("注入的类："+clazz.toString());
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//是否具有包含关系
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try {
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//获取当前类的属性
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return clazz.getDeclaredField(fieldName);
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}catch (Exception e){
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log.error(clazz.toString() + ": not exist field, try superclass " + fieldName);
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//如果为空且存在父类，则往上找
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if(clazz.getSuperclass()!=null){
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return this.getFiled(clazz.getSuperclass(), fieldName);
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}
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return null;
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}
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}
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/**
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* 打印结果返回
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* @param response
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* @throws IOException
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*/
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public static void restError(HttpServletResponse response) {
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try {
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//固定错误
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ApiRest apiRest = new ApiRest(ApiError.ERROR_10010002);
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response.setCharacterEncoding("UTF-8");
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response.setContentType("application/json");
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response.getWriter().write(JSON.toJSONString(apiRest));
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response.getWriter().close();
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}catch (IOException e){
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}
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}
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}
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