sentinel找不到UrlBlockHandler接口解决方法
package com.sentinel;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Component;
import com.Enum.RequestMsgEnum;
import com.alibaba.csp.sentinel.adapter.spring.webmvc.callback.BlockExceptionHandler;
import com.alibaba.csp.sentinel.slots.block.BlockException;
import com.alibaba.csp.sentinel.slots.block.authority.AuthorityException;
import com.alibaba.csp.sentinel.slots.block.degrade.DegradeException;
import com.alibaba.csp.sentinel.slots.block.flow.FlowException;
import com.alibaba.csp.sentinel.slots.block.flow.param.ParamFlowException;
import com.alibaba.csp.sentinel.slots.system.SystemBlockException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.global.BaseController;
/**
* 自定义sentinel异常返回信息
*/
@Component
public class MyUrlBlockHandler extends BaseController implements BlockExceptionHandler{
@Override
public void handle(HttpServletRequest request, HttpServletResponse response, BlockException ex) throws Exception {
String msg = null;
if (ex instanceof FlowException) {
msg = "限流了";
} else if (ex instanceof DegradeException) {
msg = "降级了";
} else if (ex instanceof ParamFlowException) {
msg = "热点参数限流";
} else if (ex instanceof SystemBlockException) {
msg = "系统规则（负载/...不满足要求）";
} else if (ex instanceof AuthorityException) {
msg = "授权规则不通过";
}
// http状态码
response.setStatus(500);
response.setCharacterEncoding("utf-8");
response.setHeader("Content-Type", "application/json;charset=utf-8");
response.setContentType("application/json;charset=utf-8");
// spring mvc自带的json操作工具，叫jackson
new ObjectMapper()
.writeValue(
response.getWriter(),
this.responseResult(RequestMsgEnum.Failtrue, msg)
);
}
}