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      org.aspectj
         
     
      aspectjrt
         
     
      1.9.2
     
    
        
     
      org.aspectj
         
     
      aspectjweaver
         
     
      1.9.2
     
    
Web层运行异常后的切面处理实现
import co.yiiu.core.bean.Result;import com.fasterxml.jackson.databind.ObjectMapper;import lombok.extern.slf4j.Slf4j;import org.aspectj.lang.JoinPoint;import org.aspectj.lang.annotation.AfterThrowing;import org.aspectj.lang.annotation.Aspect;import org.aspectj.lang.annotation.Before;import org.springframework.stereotype.Component;import org.springframework.web.context.request.RequestContextHolder;import org.springframework.web.context.request.ServletRequestAttributes;import javax.servlet.http.HttpServletResponse;import java.io.IOException;import java.io.PrintWriter;/** * 创建日期:2018/11/26 * 作者:Zy */@Slf4j@Component@Aspectpublic class WebExceptionAspect {    private Exception e;    @Pointcut("@annotation(org.springframework.web.bind.annotation.RequestMapping)")    private void webPointcut() {}    @Pointcut("@annotation(org.springframework.web.bind.annotation.PostMapping)")    private void postPointcut() {}    @Pointcut("execution(* co.yiiu.web.bountyHunter..*.*(..))")    private void bountyHunterPointcut() {}    @Before("bountyHunterPointcut()")    public void beforeLog(JoinPoint joinPoint) {        log.info("我是前置通知 "+joinPoint.getSignature().getName());    }    @AfterThrowing(pointcut = "bountyHunterPointcut()", throwing = "e")    public void handleThrowing(JoinPoint joinPoint, Exception e) {        this.e = e;         //e.printStackTrace();        log.error("发现异常！" + e.getMessage());        writeContent("出现异常" + e.getMessage());    }    private void writeContent(String content) {        HttpServletResponse response = ((ServletRequestAttributes)RequestContextHolder.getRequestAttributes())                .getResponse();        response.setCharacterEncoding("UTF-8");        response.setHeader("Content-Type", "text/json;charset=UTF-8");        response.setHeader("icop-content-type", "exception");        PrintWriter writer = null;        JsonGenerator jsonGenerator = null;        try {            writer = response.getWriter();            jsonGenerator = (new ObjectMapper()).getFactory().createGenerator(writer);            jsonGenerator.writeObject(Result.error(500,content));        } catch (IOException e1) {            e1.printStackTrace();        } finally {            writer.flush();            writer.close();        }    }}
   
    
需要注意的是，该类需注册至Spring容器中，具体方式可依据项目实际需求选择。