io.github.smart.cloud.starter.web.exception.strategy.BindExceptionHandlerStrategy Maven / Gradle / Ivy

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/*
 * Copyright © 2019 collin ([email protected])
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.github.smart.cloud.starter.web.exception.strategy;

import io.github.smart.cloud.common.pojo.Response;
import io.github.smart.cloud.constants.CommonReturnCodes;
import io.github.smart.cloud.starter.core.util.ResponseUtil;
import io.github.smart.cloud.starter.web.exception.IExceptionHandlerStrategy;
import io.github.smart.cloud.starter.web.exception.util.ExceptionUtil;
import org.springframework.util.CollectionUtils;
import org.springframework.validation.BindException;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.MethodArgumentNotValidException;

import java.util.List;

/**
 * @author collin
 * @desc 参数检验异常转换
 * @date 2019/10/29
 */
public class BindExceptionHandlerStrategy implements IExceptionHandlerStrategy {

    @Override
    public boolean match(Throwable e) {
        return !(e instanceof MethodArgumentNotValidException) && (e instanceof BindException);
    }

    @Override
    public Response trans(Throwable e) {
        // 参数校验
        BindException bindException = (BindException) e;
        List fieldErrors = bindException.getFieldErrors();
        if (!CollectionUtils.isEmpty(fieldErrors)) {
            String errorMsg = ExceptionUtil.getErrorMsg(fieldErrors);
            return ResponseUtil.of(CommonReturnCodes.VALIDATE_FAIL, errorMsg);
        }
        return null;
    }

}