springboot中抛出异常，springboot自带的是springmvc框架，这个就不多说了。
springmvc统一异常解决方法这里要说明的是。只是结合了springboot的使用而已。直接上代码，有效有用的才是ok。
1.定义异常捕获
package com.example.rest.error;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.servlet.NoHandlerFoundException;
import javax.validation.ConstraintViolationException;
/**
*
* @author ming 定义全局异常处理
* @RestControllerAdvice 是@controlleradvice 与@ResponseBody 的组合注解
*/
@RestControllerAdvice
public class GlobalControllerExceptionHandler {
@ExceptionHandler(value = { ConstraintViolationException.class })
@ResponseStatus(HttpStatus.BAD_REQUEST)
public ApiErrorResponse constraintViolationException(ConstraintViolationException ex) {
return new ApiErrorResponse(500, 5001, ex.getMessage());
}
@ExceptionHandler(value = { IllegalArgumentException.class })
@ResponseStatus(HttpStatus.BAD_REQUEST)
public ApiErrorResponse IllegalArgumentException(IllegalArgumentException ex) {
return new ApiErrorResponse(501, 5002, ex.getMessage());
}
@ExceptionHandler(value = { NoHandlerFoundException.class })
@ResponseStatus(HttpStatus.NOT_FOUND)
public ApiErrorResponse noHandlerFoundException(Exception ex) {
return new ApiErrorResponse(404, 4041, ex.getMessage());
}
@ExceptionHandler(value = { Exception.class })
@ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
public ApiErrorResponse unknownException(Exception ex) {
return new ApiErrorResponse(500, 5002, ex.getMessage());
}
}
2.定义一个返回对象
package com.example.rest.error;
/**
* @author ming
*/
public class ApiErrorResponse {
private int status;
private int code;
private String message;
public ApiErrorResponse(int status, int code, String message) {
this.status = status;
this.code = code;
this.message = message;
}
public int getStatus() {
return status;
}
public int getCode() {
return code;
}
public String getMessage() {
return message;
}
@Override
public String toString() {
return "ApiErrorResponse{" +
"status=" + status +
", code=" + code +
", message=" + message +
'}';
}
}
3.定义一个启动Application
package com.example;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
@SpringBootApplication
@EnableWebMvc
public class SpringBootExceptionHandlingApplication {
public static void main(String[] args) {
SpringApplication.run(SpringBootExceptionHandlingApplication.class, args);
}
}
4.最后一个测试类
package com.example.rest.controller;
import org.springframework.http.MediaType;
import org.springframework.util.Assert;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.validation.ConstraintViolationException;
import java.util.Collections;
/**
* @author ming
*/
@RestController
public class TestController {
@GetMapping(value = "/test", produces = MediaType.APPLICATION_JSON_VALUE)
public void test(Long id) {
Assert.notNull(id,"id不能为空!");
throw new ConstraintViolationException("error", Collections.emptySet());
}
}
注意application.properties这个文件的配置
spring.mvc.throw-exception-if-no-handler-found=true
ok，springboot中解决springmvc异常抛出就可以这样解决了。
