kailongapple commented on issue #5700:
URL: https://github.com/apache/seatunnel/issues/5700#issuecomment-5000324832
SeaTunnel 要求 source / sink / transform 是 List。
但 libs 里 seatunnel-config-base 和 seatunnel-config-shade 同包冲突，按字母序先加载了
base，source { MySQL-CDC {...} } 被解析成 Map，类型转换就炸了。
已改：docker-entrypoint.sh 让 seatunnel-config-shade 排在 classpath 最前。
正确做法：让 shade 先于 base 进 classpath（已在 docker-entrypoint.sh 里做了）：
# 先加 shade
CP=.../seatunnel-config-shade-2.3.8.jar
# 再加 libs 里其它 jar（含 base）
`#!/bin/bash
#
# Foreground entrypoint for SeaTunnel Web in Docker.
# SEATUNNEL_HOME must be provided via volume mount (Engine client, separate
from Web image).
#
set -e
SEATUNNEL_WEB_HOME="${SEATUNNEL_WEB_HOME:-/opt/seatunnel-web}"
SEATUNNEL_HOME="${SEATUNNEL_HOME:-/opt/seatunnel}"
LOGDIR="${SEATUNNEL_WEB_HOME}/logs"
mkdir -p "${LOGDIR}" "${SEATUNNEL_WEB_HOME}/datasource"
export SEATUNNEL_HOME
if [ ! -f "${SEATUNNEL_HOME}/bin/seatunnel.sh" ]; then
echo "ERROR: SEATUNNEL_HOME=${SEATUNNEL_HOME} is not initialized."
echo " Mount the Engine client volume or wait for seatunnel-init to
finish."
exit 1
fi
if [ -z "${JAVA_HOME}" ]; then
JAVA_BIN="$(command -v java)"
else
JAVA_BIN="${JAVA_HOME}/bin/java"
fi
# Prefer full JAVA_OPTS; otherwise build from JAVA_XMS / JAVA_XMX (set by
compose as plain values)
if [ -z "${JAVA_OPTS}" ]; then
JAVA_XMS="${JAVA_XMS:-1g}"
JAVA_XMX="${JAVA_XMX:-1g}"
JAVA_OPTS="-server -Xms${JAVA_XMS} -Xmx${JAVA_XMX} -Xmn512m"
fi
JAVA_OPTS="${JAVA_OPTS} -Dseatunnel-web.logs.path=${LOGDIR}"
JAVA_OPTS="${JAVA_OPTS} -DSEATUNNEL_HOME=${SEATUNNEL_HOME}"
JAVA_OPTS="${JAVA_OPTS} -XX:+HeapDumpOnOutOfMemoryError
-XX:HeapDumpPath=${LOGDIR}/dump.hprof"
echo "Using JAVA_OPTS=${JAVA_OPTS}"
SPRING_OPTS="${SPRING_OPTS:--Dspring.config.name=application.yml
-Dspring.config.location=classpath:application.yml}"
if [ -n "${SPRING_PROFILES_ACTIVE}" ]; then
SPRING_OPTS="${SPRING_OPTS}
-Dspring.profiles.active=${SPRING_PROFILES_ACTIVE}"
fi
if [ -z "${ST_WEB_BASEDIR_PATH}" ]; then
export ST_WEB_BASEDIR_PATH="${SEATUNNEL_WEB_HOME}"
fi
# plugin-mapping.properties is required by Web; copy from mounted Engine
client
if [ -f "${SEATUNNEL_HOME}/connectors/plugin-mapping.properties" ]; then
cp -f "${SEATUNNEL_HOME}/connectors/plugin-mapping.properties" \
"${SEATUNNEL_WEB_HOME}/conf/plugin-mapping.properties"
fi
cd "${SEATUNNEL_WEB_HOME}"
# seatunnel-config-base 与 seatunnel-config-shade 同包冲突；
# 必须先加载 shade，否则 source/sink 会被解析成 Map，触发
# ClassCastException: LinkedHashMap cannot be cast to ArrayList
CP="${SEATUNNEL_WEB_HOME}/conf"
SHADE_JAR=$(ls "${SEATUNNEL_WEB_HOME}"/libs/seatunnel-config-shade-*.jar
2>/dev/null | head -1)
if [ -n "${SHADE_JAR}" ]; then
CP="${CP}:${SHADE_JAR}"
fi
for jar in "${SEATUNNEL_WEB_HOME}"/libs/*.jar; do
case "${jar}" in
*seatunnel-config-shade*) continue ;;
*) CP="${CP}:${jar}" ;;
esac
done
for jar in "${SEATUNNEL_WEB_HOME}"/datasource/*.jar; do
[ -f "${jar}" ] && CP="${CP}:${jar}"
done
exec "${JAVA_BIN}" ${JAVA_OPTS} \
-cp "${CP}" \
${SPRING_OPTS} \
org.apache.seatunnel.app.SeatunnelApplication
`
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