Spring boot全局异常统一处理@RestControllerAdvice

@RestControllerAdvice注解定义全局处理异常类,可以返回JSON格式提示信息
1、使用方法

import com.zytech.mobile.common.ServerResponse;
import org.springframework.web.HttpRequestMethodNotSupportedException;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.MissingServletRequestParameterException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.method.annotation.MethodArgumentTypeMismatchException;

import java.io.IOException;

/**
 * @author chenyi
 * Create on 2019/11/11
 */
@RestControllerAdvice
public class MyExceptionController{

    /**
     * 未知异常
     */
    @ExceptionHandler(value = Exception.class)
    public ServerResponse unKnowExceptionHandler(Exception e) {
        //To do Exception
        return ServerResponse.createByErrorMsg("未知异常");
    }

    /**
     * 运行时异常
     */
    @ExceptionHandler(value = RuntimeException.class)
    public ServerResponse runtimeExceptionHandler(RuntimeException e) {
        //To do Exception
        return ServerResponse.createByErrorMsg("运行时异常");
    }

    /**
     * 空指针异常
     */
    @ExceptionHandler(NullPointerException.class)
    public ServerResponse nullPointerExceptionHandler(NullPointerException e) {
        //To do Exception
        return ServerResponse.createByErrorMsg("空指针异常");
    }

    /**
     * 类型转换异常
     */
    @ExceptionHandler(ClassCastException.class)
    public ServerResponse classCastExceptionHandler(ClassCastException e) {
        //To do Exception
        return ServerResponse.createByErrorMsg("类型转换异常");
    }

    /**
     * IO异常
     */
    @ExceptionHandler(IOException.class)
    public ServerResponse iOExceptionHandler(IOException e) {
        //To do Exception
        return ServerResponse.createByErrorMsg("IO异常");
    }
    
    /**
     * 参数类型不匹配
     */
    @ExceptionHandler({MethodArgumentTypeMismatchException.class})
    public ServerResponse requestTypeMismatch(MethodArgumentTypeMismatchException e) {
        //To do Exception
        return ServerResponse.createByErrorMsg("参数类型不匹配");
    }

    /**
     * 缺少参数
     */
    @ExceptionHandler({MissingServletRequestParameterException.class})
    public ServerResponse requestMissingServletRequest(MissingServletRequestParameterException e) {
        //To do Exception
        return ServerResponse.createByErrorMsg("缺少参数");
    }

    /**
     * 请求method不匹配
     */
    @ExceptionHandler({HttpRequestMethodNotSupportedException.class})
    public ServerResponse requestMissingServletRequest(HttpRequestMethodNotSupportedException e) {
        //To do Exception
        return ServerResponse.createByErrorMsg("请求method不匹配");
    }
}

上面仅仅是一些样例,不仅仅局限于这几个异常。

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