SpringBoot Log

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SpringBoot Log

Transactional事务回滚 

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//方法上增加注解
@Transactional(rollbackOn = Exception.class)
public void example() {
	try {

	} catch (Exception e) {
		// 设置异常时执行回滚
		TransactionAspectSupport.currentTransactionStatus().setRollbackOnly();
	}
}

配置类序列化失败

问题描述：

将配置类使用 JackSon 序列化时，出现序列化异常

SpringBoot请求跨域 

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package com.learnning.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;

/**
 * 
 * @ClassName: CustomCORSConfiguration
 * @Description: 配置跨域请求访问失败的问题
 * @author time
 * @date 2018/11/21
 */
@Configuration
public class CustomCORSConfiguration {

	private CorsConfiguration buildConfig() {
		CorsConfiguration corsConfiguration = new CorsConfiguration();
		corsConfiguration.addAllowedOrigin("*");
		corsConfiguration.addAllowedHeader("*");
		corsConfiguration.addAllowedMethod("*");
		return corsConfiguration;
	}

	@Bean
	public CorsFilter corsFilter() {
		UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
		source.registerCorsConfiguration("/**", buildConfig());
		return new CorsFilter(source);
	}

}

SpringBoot JPA查询传参

  1. 使用占位符? 
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@Query(value = "select account_id,user_name,validity from t_account where account_id = ?", nativeQuery = true)
User findByAccount_id(Long account_id);
  1. 使用命名化参数:name 
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@Query(value = "select account_id,user_name,validity from t_account where account_id =:id", nativeQuery = true)
User findByAccount_id(@Param("id") Long account_id);

自定义SpringBoot web页面图标

  1. 将图标放在/src/main/resources/static/目录下(推荐使用favicon.ico名字,符合*.ico即可)

  2. 在需要替换图标的页面加入以下标签

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    <link rel="icon" type="image/x-icon" th:href="@{/favicon.ico}">

注:该方式为最简单的实现,可以根据自身情况做调整。更改相应的相对路径即可,可自行尝试。