#
Excel 在读取 csv 的时候是通过读取文件头上的 bom 来识别编码的，这导致如果我们生成 csv 文件的平台输出无 bom 头编码的 csv 文件（例如 utf-8 ，在标准中默认是可以没有 bom 头的），Excel 只能自动按照默认编码读取，不一致就会出现乱码问题了。
掌握了这点相信乱码已经无法阻挡我们前进的步伐了：只需将不带 bom 头编码的 csv 文件，用文本编辑器（工具随意，推荐 notepad++ ）打开并转换为带 bom 的编码形式（具体编码方式随意），问题解决。
当然，如果你是像我一样的码农哥哥，在生成 csv 文件的时候写入 bom 头更直接点，用户会感谢你的。
附录：对于 utf-8 编码，unicode 标准中是没有 bom 定义的，微软在自己的 utf-8 格式的文本文件之前加上了EF BB BF三个字节作为识别此编码的 bom 头，这也解释了为啥大部分乱码都是 utf-8 编码导致的原因
SPRING BATCH中生成CSV文件时的解决方案：
new FlatFileItemWriterBuilder<T>()
.name(itemWriterName)
.resource(outputResource)
.lineAggregator(lineAggregator)
.headerCallback(
h -> {
System.out.println(header);
h.write('\uFEFF');//只需加这一行
h.write(header);
}
)
.build();
https://stackoverflow.com/questions/48952319/send-csv-file-encoded-in-utf-8-with-bom-in-java
/**
*
* @param <T>声明此方法持有一个类型T，也可以理解为声明此方法为泛型方法
* @param clazz 作用是指明泛型T的具体类型
* @return 指明该方法的返回值为类型T
* @throws InstantiationException
* @throws IllegalAccessException
*/
public <T> T getObject(Class<T> clazz) throws InstantiationException, IllegalAccessException {
T t = clazz.newInstance();//创建对象
return t;
}
方法返回值前的<T>的左右是告诉编译器，当前的方法的值传入类型可以和类初始化的泛型类不同，也就是该方法的泛型类可以自定义，不需要跟类初始化的泛型类相同
领域驱动（DDD，Domain Driven Design）为软件设计提供了一套完整的理论指导和落地实践，通过战略设计和战术设计，将技术实现与业务逻辑分离，来应对复杂的软件系统。本系列文章准备以实战的角度来介绍 DDD，首先编写领域驱动的代码模型，然后再基于代码模型，引入 DDD 的各项概念，先介绍战术设计，再介绍战略设计。
> DDD 实战1 - 基础代码模型
> DDD 实战2 - 集成限界上下文（Rest & Dubbo）
> DDD 实战3 - 集成限界上下文（消息模式）
> DDD 实战4 - 领域事件的设计与使用
> DDD 实战5 - 实体与值对象
> DDD 实战6 - 聚合的设计
> DDD 实战7 - 领域工厂与领域资源库
> DDD 实战8 - 领域服务与应用服务
> DDD 实战9 - 架构设计
> DDD 实战10 - 战略设计
@Past @Future只针对Date类型的验证，如果是String类型的验证，则不适用。
其实可以新加一个方法返回Date类型，再配合@Future@Past 进行验证。
@Future(message = "Invalid CN_ID_INFO.EXPIRE_DATE.")
private LocalDate getValidExpireDate() {
try {
return LocalDate.parse(this.dateString, DateTimeFormatter.ofPattern("yyyy-MM-dd"));
} catch (Exception e) {
return null;
}
}
此方法对dateString进行解释，返回LocalDate，如果dateString为空或格式错误，则返回空，再配合@Future 进行是否未来日期的验证。
bean validation的注释是针对单个变量的，如果要针对多个变量的联动，则不行，需要用到这个注释。
这种方法避免了自定义校验器而增加类。
https://www.chkui.com/article/java/java_bean_validation
@AssertTrue(message = "Missing BANK_CARD_IMG_INFO.IMG")
private Boolean getValidImg() {
if(YNEnum.Y.code.equals(super.getNeedChecked())) {
return StringUtils.hasText(this.img);
}
return null;//igore checking.
}
这个是当needChecked为Y的时候才执行检查img变量是否为空。
有几点注意：
- 方法名称要以get开头
- 返回类型用Boolean，而不用boolean
- 返回值有三种：true,false,null如果是null则当成通过，与true的结果一样
SPRING BOOT单元测试中，因为测试时可能对应的服务器地址不同于SIT等别的环境，通常会将这些地址放于application-sit.yaml中。
在单元测试的代码中用这个标签指定用哪个profile，如
@ActiveProfiles({"embedded-mongodb","test"})
但这样做法，由于@ActiveProfiles这个标签是final的，如果要测试别的profile，只能复制另一份单元测试代码，再改此标签。
比较灵活的做法是用default profile，default profile是如果没指定任何profile，则会默认用这个。在application-default.yaml中再指定需激活的profile。
spring:
profiles:
active: test,embedded-mongodb
如果要测试别的profile，可以指定环境变量的方式覆盖：
-Dspring.profiles.active=error,embedded-mongodb
为了安全起见，将application-default.yaml放在测试目录中：src\test\resources。
Setting default Spring profile for tests with override option
https://blog.inspeerity.com/spring/setting-default-spring-profile-for-tests-with-override-option/
接收数据的JAVA BEAN通常需要验证其中字段的正确性，如不准为空，符合EMAIL格式等。
JSR-303 Bean Validation则提供了这样的便捷。
只要在JAVA BEAN中需要验证的字段加@NotNull这种标签，然后在SERVISE中的输入参数中加@Valid标签，则就激活验证流程。
也可以编程的方式自己验证：
@MessageEndpoint
//@Validated
public class MqMessageCcdValidator {
private static final Logger LOGGER = LoggerFactory.getLogger(MqMessageCcdValidator.class);
@Autowired
private Validator validator;
@ServiceActivator
public MqMessage<CcdRequest> validate(/* @Valid */ Message<MqMessage<CcdRequest>> requestMessage) {
Set<ConstraintViolation<MqMessage<CcdRequest>>> set = validator.validate(requestMessage.getPayload());
if(CollectionUtils.isNotEmpty(set)) {
CompositeException compositeException = new CompositeException();
set.forEach(
constraintViolation -> {
LOGGER.info("{}", constraintViolation);
ReqInfoValidationException exception =
new ReqInfoValidationException(constraintViolation.getMessage());
compositeException.addException(exception);
}
);
throw new MessageHandlingException(requestMessage, compositeException);
}
return requestMessage.getPayload();
}
}
自定义验证规则
可用标签来做，以下为验证手机号的规则：
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import javax.validation.Constraint;
import javax.validation.Payload;
import javax.validation.ReportAsSingleViolation;
import javax.validation.constraints.Pattern;
@Retention(RUNTIME)
@Target(value = { ElementType.FIELD, ElementType.PARAMETER, ElementType.ANNOTATION_TYPE })
@Constraint(validatedBy = {})
@ReportAsSingleViolation
@Pattern(regexp = "^1[3-9]\\d{9}$")
public @interface ChinaPhone {
String message() default "Invalid Chinese mobile No.";
Class<?>[] groups() default {};
Class<? extends Payload>[] payload() default {};
}
如果比较复杂的验证规则，则参见：
https://reflectoring.io/bean-validation-with-spring-boot/#implementing-a-custom-validatorHow to use Java Bean Validation in Spring Boot
https://nullbeans.com/how-to-use-java-bean-validation-in-spring-boot/Complete Guide to Validation With Spring Boot
https://reflectoring.io/bean-validation-with-spring-boot/Spring JMS Validate Messages using JSR-303 Bean Validation
https://memorynotfound.com/spring-jms-validate-messages-jsr-303-bean-validation/Spring REST Validation Example
https://mkyong.com/spring-boot/spring-rest-validation-example/
Spring Boot 整合 Bean Validation 校验数据
https://blog.csdn.net/wangzhihao1994/article/details/108403732
场景，餐厅：
- 食客下单，有饮品、食物、甜点
- 侍应接单，传送给厨房
- 厨房分三个子流程处理，即饮品、食物、甜点子流程
- 等待三个子流程处理完，合并成一份交付
- 如果厨房发现某食物欠缺，会通知侍应，展开错误处理，即通知食客更改食物，再交给厨房
- 侍应将交付品传送给食客
有一个主流程、三个子流程和一个聚合流程，聚合流程会聚合三个子流程的产物，通知主流程，再往下走。
并且主流程会感知子流程的错误，并会交给相应错误处理流程处理，且将结果再交给聚合流程。
对应SPRING INTEGRATION 的SCATTERGATHER模式：
@Bean
public IntegrationFlow scatterGatherAndExecutorChannelSubFlow(TaskExecutor taskExecutor) {
return f -> f
.scatterGather(
scatterer -> scatterer
.applySequence(true)
.recipientFlow(f1 -> f1.transform(p -> "Sub-flow#1"))
.recipientFlow(f2 -> f2
.channel(c -> c.executor(taskExecutor))
.transform(p -> {
throw new RuntimeException("Sub-flow#2");
})),
null,
s -> s.errorChannel("scatterGatherErrorChannel"));
}
@ServiceActivator(inputChannel = "scatterGatherErrorChannel")
public Message<?> processAsyncScatterError(MessagingException payload) {
return MessageBuilder.withPayload(payload.getCause().getCause())
.copyHeaders(payload.getFailedMessage().getHeaders())
.build();
}
https://github.com/adnanmamajiwala/spring-integration-sample/tree/master/dsl-scatter-gather/src/main/java/com/si/dsl/scattergatherhttps://docs.spring.io/spring-integration/docs/5.1.x/reference/html/#scatter-gather
当需要调用第三方HTTP接口时，别人的接口还没完成，可先根据接口定义文档，返回适当的数据，以便开发。
在LINUX上的部署结构为：
├── boot
│ ├── moco-runner-1.1.0-standalone.jar
│ └── .version
├── foo.json
├── logs
│ ├── back
│ └── moco.log
├── moco.sh
└── startup-moco.sh
.version文件：
/path/to/boot/moco-runner-1.1.0-standalone.jar 1.1.0
moco.sh
#!/usr/bin/env bash
# Ensure this file is executable via `chmod a+x moco`, then place it
# somewhere on your $PATH, like ~/bin. The rest of moco will be
# installed upon first run into the ~/.moco directory.
if [ `id -u` -eq 0 ] && [ "$MOCO_ROOT" = "" ]; then
echo "WARNING: You're currently running as root; probably by accident."
echo "Press control-C to abort or Enter to continue as root."
echo "Set MOCO_ROOT to disable this warning."
read _
fi
echo $*
#export MOCO_HOME="${
MOCO_HOME:
-"$HOME/.moco"}
"
export MOCO_HOME=$(cd `dirname $0`; cd boot; pwd)
VERSION_LOG_FILE="$MOCO_HOME/.version"
# Determine the Java command to use to start the JVM.
if [ -n "$JAVA_HOME" ] ; then
if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
# IBM's JDK on AIX uses strange locations for the executables
JAVACMD="$JAVA_HOME/jre/sh/java"
else
JAVACMD="$JAVA_HOME/bin/java"
fi
if [ ! -x "$JAVACMD" ] ; then
die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
else
JAVACMD="java"
which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
if [ "$HTTP_CLIENT" = "" ]; then
if type -p curl >/dev/null 2>&1; then
if [ "$https_proxy" != "" ]; then
CURL_PROXY="-x $https_proxy"
fi
HTTP_CLIENT="curl $CURL_PROXY -f -L -o"
else
HTTP_CLIENT="wget -O"
fi
fi
function download_failed_message {
echo "Failed to download $1"
echo "It's possible your HTTP client's certificate store does not have the"
echo "correct certificate authority needed. This is often caused by an"
echo "out-of-date version of libssl. Either upgrade it or set HTTP_CLIENT"
echo "to turn off certificate checks:
"
echo " export HTTP_CLIENT=\"wget --no-check-certificate -O\" # or"
echo " export HTTP_CLIENT=\"curl --insecure -f -L -o\""
echo "It's also possible that you're behind a firewall haven't yet"
echo "set HTTP_PROXY and HTTPS_PROXY."
}
function download {
$HTTP_CLIENT "$2.pending" "$1"
if [ $? == 0 ]; then
# TODO:
checksum
mv -f "$2.pending" "$2"
else
rm "$2.pending" 2> /dev/null
download_failed_message "$1"
exit 1
fi
}
function parse_tag {
tag_value=`grep "<$2>.*<.$2>" $1 | sed -e "s/^.*<$2/<$2/" | cut -f2 -d">"| cut -f1 -d"<"`
}
function parse_maven_metadata {
MOCO_METADATA_URL="http:
//repo1.maven.org/maven2/com/github/dreamhead/moco-runner/maven-metadata.xml"
MOCO_METADATA="/tmp/maven-metadata.xml"
download $MOCO_METADATA_URL $MOCO_METADATA
parse_tag $MOCO_METADATA latest
LATEST_VERSION=$tag_value
}
function parse_standalone_latest_url {
parse_maven_metadata
VERSION=${LATEST_VERSION%}
LATEST_MOCO_STANDALONE_JAR="moco-runner-$VERSION-standalone.jar"
MOCO_STANDLONE_URL="http://repo1.maven.org/maven2/com/github/dreamhead/moco-runner/$LATEST_VERSION/$LATEST_MOCO_STANDALONE_JAR"
}
function install {
echo "Install moco"
echo "Parse the latest version of moco"
parse_standalone_latest_url
echo "Download the latest moco:
$LATEST_VERSION"
MOCO_STANDALONE="$MOCO_HOME/$LATEST_MOCO_STANDALONE_JAR"
echo "$MOCO_STANDALONE $LATEST_VERSION" >> $VERSION_LOG_FILE
download $MOCO_STANDLONE_URL $MOCO_STANDALONE
}
function load_current_version {
read MOCO_STANDALONE CURRENT_VERSION < $VERSION_LOG_FILE
if [[ "$(uname)" -ne "Darwin" && "$(expr substr $(uname -s) 2 6)" == "CYGWIN" ]];then
MOCO_STANDALONE=`cygpath -m "$MOCO_STANDALONE"`
fi
}
function usage {
printf "
options:
help show help
start start server, e.g. moco start -p 12306 -c configfile.json
shutdown shutdown moco server
upgrade upgrade moco
"
}
if [ ! -e "$MOCO_HOME" ]
then
mkdir "$MOCO_HOME"
install
fi
if [ "$1" = "start" ]; then
echo "Starting
"
load_current_version
exec "$JAVACMD" -jar "$MOCO_STANDALONE" $*
elif [ "$1" = "http" ]; then
echo "Starting HTTP server"
load_current_version
exec "$JAVACMD" -jar "$MOCO_STANDALONE" $*
elif [ "$1" = "https" ]; then
echo "Starting HTTPS server"
load_current_version
exec "$JAVACMD" -jar "$MOCO_STANDALONE" $*
elif [ "$1" = "socket" ]; then
echo "Starting Socket server"
load_current_version
exec "$JAVACMD" -jar "$MOCO_STANDALONE" $*
elif [ "$1" = "shutdown" ]; then
echo "Shutting down server"
load_current_version
exec "$JAVACMD" -jar "$MOCO_STANDALONE" $*
elif [ "$1" = "upgrade" ]; then
echo "Check the new version"
parse_maven_metadata
load_current_version
if [ "$LATEST_VERSION" = "$CURRENT_VERSION" ]; then
echo "The current version of moco is the latest"
else
echo "Upgrading"
rm $VERSION_LOG_FILE
install
fi
elif [ "$1" = "version" ]; then
load_current_version
echo "Moco version: $CURRENT_VERSION"
elif [ "$1" = "help" ]; then
usage
else
usage
fi
这是根据GIT上的原始文件作的修改。
startup-moco.sh
CMD_PATH=$(cd `dirname $0`; pwd)
# 项目日志输出绝对路径
LOG_DIR=${CMD_PATH}"/logs"
LOG_FILE="moco.log"
LOG_PATH="${LOG_DIR}/${LOG_FILE}"
# 当前时间
NOW=`date +'%Y-%m-%m-%H-%M-%S'`
NOW_PRETTY=`date +'%Y-%m-%m %H:%M:%S'`
# 启动日志
STARTUP_LOG="================================================ ${NOW_PRETTY} ================================================\n"
# 日志备份目录
LOG_BACK_DIR="${LOG_DIR}/back/"
# 如果logs文件夹不存在,则创建文件夹
if [[ ! -d "${LOG_DIR}" ]]; then
mkdir "${LOG_DIR}"
fi
# 如果logs/back文件夹不存在,则创建文件夹
if [[ ! -d "${LOG_BACK_DIR}" ]]; then
mkdir "${LOG_BACK_DIR}"
fi
# 如果项目运行日志存在,则重命名备份
if [[ -f "${LOG_PATH}" ]]; then
mv ${LOG_PATH} "${LOG_BACK_DIR}/${APPLICATION}_back_${NOW}.log"
fi
# 创建新的项目运行日志
echo "" > ${LOG_PATH}
# 可支持多个json配置文件
$CMD_PATH/moco.sh http -p 8088 -g "${CMD_PATH}/root.json" > ${LOG_PATH} 2>&1 &
# 打印启动日志
echo -e ${STARTUP_LOG}
root.json
[
{
"context": "/service-a",
"include": "foo.json"
},
{
"context": "/service-b",
"include": "bar.json"
}
]
foo.json
[
{
"request": {
"method": "post",
"forms": {
"method": "uploadKycInfo"
}
},
"response": {
"json": {
"response": {
"subcode": "10000",
"submsg": "Success",
"sndDt": "20210121101800",
"remark": "上传验证基本信息",
"msgBody": {
"merOrdrNo": "A00120210121654321",
"retCode": "00000",
"retMsg": "成功/处理完成",
"remark": "上传详情或上传信息的简要描述"
}
},
"code": "0000",
"msg": "处理完成",
"sign": "DF2659FE3EB8184561135D9F55F5EF5"
}
}
}
]
访问路径：
http://ip:port/service-a/
https://github.com/dreamhead/moco/blob/master/moco-doc/apis.md
https://zhuanlan.zhihu.com/p/60076337 https://www.programmersought.com/article/68272293688/