在BaseController中写
@ExceptionHandler(value = { MethodArgumentNotValidException.class,BindException.class })
@ResponseStatus(code = HttpStatus.BAD_REQUEST)
public @ResponseBody CallResult<?> validExceptionHandler(Exception validException) {
CallResult<?> result = new CallResult<>();
if (validException instanceof MethodArgumentNotValidException) {
convertError(((MethodArgumentNotValidException) validException).getBindingResult(), result);
} else if (validException instanceof BindException) {
convertError(((BindException) validException).getBindingResult(), result);
}
return result;
}
/**
* 将errors对象转换为CallResult输出,验证错误转为map
*
* @param error 错误对象
* @param result
* @see org.springframework.validation.Errors
* @return
*/
@SuppressWarnings({ "rawtypes","unchecked" })
public static void convertError(Errors error, CallResult result) {
if (error.hasErrors()) {
result.setStatus(ResultEnum.PARAM_ERROR.getStatus());
Map<String,String> errMap = new HashMap<String,String>();
String errorMsg = "";
if (error.hasGlobalErrors()) {
String globalMsg = "";
for (ObjectError ferr : error.getGlobalErrors()) {
globalMsg = globalMsg + ferr.getDefaultMessage() + ";";
}
errorMsg += globalMsg;
errMap.put("_global_msg", globalMsg);
}
if (error.hasFieldErrors()) {
for (FieldError ferr : error.getFieldErrors()) {
errMap.put(ferr.getField(), ferr.getDefaultMessage());
errorMsg = errorMsg + ferr.getDefaultMessage() + ";";
}
}
result.setMessage(errorMsg);
result.setData(errMap);
}
}
CallResult
public class CallResult<T> implements Serializable {
private static final long serialVersionUID = 1L;
private int status = 200; // 状态码
private String message; // 结果描述
private T data; // 返回数据
public CallResult() {
this(ResultEnum.SUCCESS);
}
/**
* 构造函数,使用默认结果枚举ResultEnum设置status和message
*
* @param result ResultEnum
*/
public CallResult(ResultEnum result) {
setResult(result.getStatus(), result.getMessage());
}
public CallResult(int status) {
this.status = status;
}
public CallResult(int status, String message) {
setResult(status, message);
}
/**
* 构造函数
*
* @param status
* @param message
* @param data
*/
public CallResult(int status, String message, T data) {
this.status = status;
this.message = message;
this.data = data;
}
public int getStatus() {
return status;
}
public void setStatus(int code) {
this.status = code;
}
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public T getData() {
return data;
}
public void setData(T data) {
this.data = data;
}
public void setResult(ResultEnum err) {
this.status = err.getStatus();
this.message = err.getMessage();
}
public void setResult(int code, String msg) {
this.status = code;
this.message = msg;
}
/**
* 结果是否成功,即等于ErrorEnum.SUCCESS.
*
* @return boolean
*/
public boolean success() {
return status == ResultEnum.SUCCESS.getStatus();
}
public static <T> CallResult<T> error(String message) {
CallResult<T> result = new CallResult<>(ResultEnum.SERVER_ERROR.getStatus(), message);
return result;
}
public static <T> CallResult<T> paramError(String message) {
CallResult<T> result = new CallResult<>(ResultEnum.PARAM_ERROR.getStatus(), message);
return result;
}
/**
* 默认的执行结果枚举. <br>
* 200=执行成功 <br>
* 400=提交的数据错误,即参数错误 <br>
* 401=身份验证失败,如登录失败等 <br>
* 403=无权限访问 <br>
* 500=执行错误,通常是程序执行抛出异常了
*/
public enum ResultEnum {
SUCCESS(200),
PARAM_ERROR(400),
NO_AUTH(401),
FORBIDDEN(403),
SERVER_ERROR(500);
private int status;
private final static String[] initMsgs = { "执行成功","提交的数据错误","身份验证失败","无权限访问","执行错误" };
private ResultEnum(int status) {
this.status = status;
}
public int getStatus() {
return status;
}
/**
* 返回结果描述.
*
* @return 结果描述String
*/
public String getMessage() {
switch (status) {
case 200:
return initMsgs[0];
case 400:
return initMsgs[1];
case 401:
return initMsgs[2];
case 403:
return initMsgs[3];
case 500:
return initMsgs[4];
default:
break;
}
return null;
}
}
@Override
public String toString() {
return MessageFormat.format("status={0},message={1},data={2}", status, message,
(data == null ? "" : data.toString()));
}
}
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