spring boot 拦截异常 统一处理

spring boot 默认情况下会映射到 /error 进行异常处理，提示不友好，需要自定义异常处理，提供友好展示

1.自定义异常类(spring 对于 RuntimeException 异常才会进行事务回滚)：

package com.zpark.tools.exception;
/**
 * @author cosmo
 * @Title: CommonException
 * @ProjectName  
 * @Description:  
 * @date  
 */
public class CommonException extends RuntimeException{

    private String rerutnCode;

    private String errorMsg;

    public CommonException(String returnCode ,String errorMsg){
        this.returnCode = returnCode;
        this.errorMsg = errorMsg;
    }

    public String getReturnCode() {
        return returnCode;
    }

    public void setReturnCode(String returnCode) {
        this.returnCode = returnCode;
    }

    public String getErrorMsg() {
        return errorMsg;
    }

    public void setErrorMsg(String errorMsg) {
        this.errorMsg = errorMsg;
    }
}

2.定义全局异常类：

package com.zpark.tools.exception;

import com.zpark.tools.Constants;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import javax.servlet.http.HttpServletRequest;
import java.util.HashMap;
import java.util.Map;

/**
 * @author cosmo
 * @Title: CommonExceptionHandler
 * @ProjectName  
 * @Description:  
 * @date  
 */
@ControllerAdvice
public class CommonExceptionAdvice {

    private Logger log = LoggerFactory.getLogger(CommonExceptionAdvice.class);
    /**
     * 全局异常捕捉处理
     * @param ex
     * @return
     */
    @ResponseBody
    @ExceptionHandler(value = Exception.class)
    public Map errorHandler(HttpServletRequest request,Exception ex) {34         Map map = new HashMap();
        map.put("retrnCode", 100);
        map.put("errorMsg", ex.getMessage());51         return map;
    }67 }

运行中出现异常，会返回报错信息和错误code