问题记录与解决

新建maven项目右侧缺少maven窗口

解决方法

顶级包下pom.xml 右键add as a maven project

No Feign Client for loadBalancing defined. Did you forget to include spring-cloud-starter-netflix-ribbon?

解决方法

顶级包下pom.xml 右键add as a maven project

yml 中文件@包裹的字符无法识别如@artified@

解决方法

在项目发布路径执行命令mvn spring-boot:run

git 提交443错误 LibreSSL SSL_connect: SSL_ERROR_SYSCALL in connection to github.com:443

解决方法

git目录下执行 git config --global http.sslBackend “openssl”

idea 明明存在的类却报红

解决方法

清理idea文件索引和本地缓存

文件=>清理缓存

maven打包出错

Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.22.2:test (default-test) on project allbs-test: There are test failures.

Please refer to D:\AllbsWorkspace\allbs-utils-all\allbs-utils-all\allbs-test\target\surefire-reports for the individual test results.
Please refer to dump files (if any exist) [date].dump, [date]-jvmRun[N].dump and [date].dumpstream.

解决方法

关闭单元测试或者mvn clean -DskipTests

Error attempting to get column ‘operate_user_name’ from result set. Cause: java.sql.SQLDataException: Cannot determine value type from string

产生原因:

实体类lombok的@Builder注解导致mybatis映射失败

解决方法

去除@Builder

maven package 或者 deploy 控制台乱码

解决方法

添加-Dfile.encoding=GBK

java.lang.NoSuchFieldError：Companion

解决方法

okio包冲突，版本不和minio版本的okhttp中的okio版本对应

idea无法识别java文件，同时右侧maven工具栏中无法正常显示dependencys

解决方法

file->Project Structure->Modules->Add->Import Modules

后台管理系统后台菜单关联采用group_contact导致部分菜单勾选失效

解决方法

#查询最大值
SHOW VARIABLES LIKE “group_concat_max_len”;
group_concat长度限制默认是1024导致的

SET GLOBAL group_concat_max_len=10240000;
SET SESSION group_concat_max_len=10240000;

idea无法识别yml文件，无法变为叶子形状的图标

解决方法

如下添加

maven打包占位符问题，打包后无法读取logback-spring.xml中的${}

解决方法

移除

以下面这种方式控制

java8时间格式转换问题

Could not write JSON: Java 8 date/time type java.time.LocalDateTime not supported by default

解决方法

首先需要在pom中添加jackson-datatype-jsr310依赖

如果需要在redis直接储存含有LocalDateTime的实体类，可以将redis的序列化反序列化如下配置，将自动转换为指定的时间格式

@Configuration
@AllArgsConstructor
@AutoConfigureBefore(RedisAutoConfiguration.class)
public class RedisConfig {

    @Bean
    public RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
        RedisTemplate<Object, Object> redisTemplate = new RedisTemplate<>();
        Jackson2JsonRedisSerializer<Object> serializer = new Jackson2JsonRedisSerializer<>(Object.class);
        ObjectMapper mapper = new ObjectMapper();
        mapper.registerModule(new JavaTimeParser());
        serializer.setObjectMapper(mapper);
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashKeySerializer(new StringRedisSerializer());
        redisTemplate.setValueSerializer(serializer);
        redisTemplate.setHashValueSerializer(serializer);
        redisTemplate.setConnectionFactory(redisConnectionFactory);

        return redisTemplate;
    }

}

public class JavaTimeParser extends SimpleModule {

    public JavaTimeParser() {
        super(PackageVersion.VERSION);
        this.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
        this.addSerializer(LocalDate.class, new LocalDateSerializer(DateTimeFormatter.ofPattern("yyyy-MM-dd")));
        this.addSerializer(LocalTime.class, new LocalTimeSerializer(DateTimeFormatter.ofPattern("HH:mm:ss")));
        this.addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
        this.addDeserializer(LocalDate.class, new LocalDateDeserializer(DateTimeFormatter.ofPattern("yyyy-MM-dd")));
        this.addDeserializer(LocalTime.class, new LocalTimeDeserializer(DateTimeFormatter.ofPattern("HH:mm:ss")));
    }
}