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273 lines
7.3 KiB
273 lines
7.3 KiB
#!/bin/bash
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# ========================================
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# Java应用启动/重启脚本
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# 使用方法: ./restart-java-app.sh
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# ========================================
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# ========================================
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# 配置参数 - 请根据实际情况修改
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# ========================================
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JAR_NAME="" # JAR包名称（留空则自动检测）
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PORT=8080 # 应用端口号
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# ========================================
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# 其他配置（一般不需要修改）
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# ========================================
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JAVA_OPTS="-Xms512m -Xmx1024m" # JVM参数
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LOG_FILE="app.log" # 日志文件名
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PID_FILE="app.pid" # PID文件名
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# 颜色输出
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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BLUE='\033[0;34m'
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NC='\033[0m' # No Color
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# ========================================
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# 函数定义
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# ========================================
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# 打印带颜色的消息
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print_message() {
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local color=$1
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local message=$2
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echo -e "${color}[$(date '+%Y-%m-%d %H:%M:%S')] ${message}${NC}"
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}
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# 检查JAR文件是否存在
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check_jar_exists() {
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# 如果JAR_NAME为空，自动检测当前目录下的JAR文件
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if [ -z "$JAR_NAME" ]; then
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local jar_files=(*.jar)
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local jar_count=${#jar_files[@]}
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# 检查是否存在JAR文件
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if [ ! -f "${jar_files[0]}" ]; then
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print_message $RED "错误: 当前目录下没有找到JAR文件！"
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print_message $YELLOW "请将JAR文件放在脚本同一目录下，或在脚本中指定JAR_NAME"
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exit 1
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fi
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# 如果只有一个JAR文件，自动使用它
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if [ $jar_count -eq 1 ]; then
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JAR_NAME="${jar_files[0]}"
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print_message $BLUE "自动检测到JAR文件: $JAR_NAME"
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else
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print_message $RED "错误: 当前目录下有多个JAR文件，请在脚本中指定JAR_NAME："
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for jar in "${jar_files[@]}"; do
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print_message $YELLOW " - $jar"
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done
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exit 1
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fi
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else
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# 检查指定的JAR文件是否存在
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if [ ! -f "$JAR_NAME" ]; then
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print_message $RED "错误: JAR文件 '$JAR_NAME' 不存在！"
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print_message $YELLOW "请检查JAR_NAME配置是否正确，或确保JAR文件在当前目录下"
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exit 1
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fi
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fi
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}
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# 检查端口是否被占用
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check_port() {
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local port=$1
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if command -v netstat >/dev/null 2>&1; then
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netstat -tlnp 2>/dev/null | grep ":$port " >/dev/null
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elif command -v ss >/dev/null 2>&1; then
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ss -tlnp | grep ":$port " >/dev/null
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else
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# 如果没有netstat和ss，尝试使用lsof
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if command -v lsof >/dev/null 2>&1; then
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lsof -i :$port >/dev/null 2>&1
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else
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return 1
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fi
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fi
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}
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# 获取运行中的应用PID
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get_app_pid() {
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if [ -f "$PID_FILE" ]; then
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local pid=$(cat "$PID_FILE")
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# 检查进程是否真的在运行
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if ps -p $pid > /dev/null 2>&1; then
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echo $pid
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else
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# PID文件存在但进程不存在，删除PID文件
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rm -f "$PID_FILE"
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echo ""
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fi
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else
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# 通过进程名查找
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pgrep -f "$JAR_NAME" | head -1
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fi
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}
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# 停止应用
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stop_app() {
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local pid=$(get_app_pid)
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if [ -z "$pid" ]; then
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print_message $YELLOW "应用未运行"
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return 0
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fi
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print_message $YELLOW "正在停止应用 (PID: $pid)..."
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# 优雅停止
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kill $pid
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# 等待进程停止
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local count=0
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while [ $count -lt 30 ]; do
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if ! ps -p $pid > /dev/null 2>&1; then
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print_message $GREEN "应用已成功停止"
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rm -f "$PID_FILE"
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return 0
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fi
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sleep 1
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count=$((count + 1))
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done
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# 如果优雅停止失败，强制停止
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print_message $YELLOW "优雅停止超时，强制停止应用..."
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kill -9 $pid 2>/dev/null
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sleep 2
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if ! ps -p $pid > /dev/null 2>&1; then
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print_message $GREEN "应用已强制停止"
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rm -f "$PID_FILE"
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return 0
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else
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print_message $RED "停止应用失败"
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return 1
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fi
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}
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# 启动应用
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start_app() {
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print_message $BLUE "正在启动应用..."
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# 检查端口是否被占用
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if check_port $PORT; then
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print_message $RED "端口 $PORT 已被占用，请检查是否有其他应用在使用该端口"
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return 1
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fi
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# 启动应用
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nohup java $JAVA_OPTS -jar "$JAR_NAME" --server.port=$PORT > "$LOG_FILE" 2>&1 &
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local pid=$!
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# 保存PID
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echo $pid > "$PID_FILE"
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# 等待应用启动
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print_message $BLUE "等待应用启动..."
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sleep 3
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# 检查进程是否还在运行
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if ps -p $pid > /dev/null 2>&1; then
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# 检查端口是否监听
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local count=0
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while [ $count -lt 30 ]; do
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if check_port $PORT; then
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print_message $GREEN "应用启动成功！"
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print_message $GREEN "PID: $pid"
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print_message $GREEN "端口: $PORT"
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print_message $GREEN "日志文件: $LOG_FILE"
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return 0
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fi
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sleep 1
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count=$((count + 1))
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done
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print_message $YELLOW "应用进程已启动，但端口 $PORT 未监听，请检查日志文件: $LOG_FILE"
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return 1
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else
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print_message $RED "应用启动失败，请检查日志文件: $LOG_FILE"
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rm -f "$PID_FILE"
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return 1
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fi
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}
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# 显示应用状态
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show_status() {
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local pid=$(get_app_pid)
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if [ -n "$pid" ]; then
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print_message $GREEN "应用正在运行"
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print_message $GREEN "PID: $pid"
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print_message $GREEN "端口: $PORT"
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if check_port $PORT; then
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print_message $GREEN "端口状态: 正在监听"
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else
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print_message $YELLOW "端口状态: 未监听"
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fi
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else
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print_message $YELLOW "应用未运行"
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fi
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}
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# 显示帮助信息
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show_help() {
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echo "Java应用管理脚本"
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echo ""
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echo "使用方法:"
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echo " $0 [选项]"
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echo ""
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echo "选项:"
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echo " start 启动应用"
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echo " stop 停止应用"
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echo " restart 重启应用"
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echo " status 显示应用状态"
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echo " help 显示帮助信息"
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echo ""
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echo "配置:"
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echo " JAR包名称: ${JAR_NAME:-"自动检测"}"
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echo " 端口号: $PORT"
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echo ""
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echo "注意: 如果目录下只有一个JAR文件，可以将JAR_NAME留空实现自动检测"
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}
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# ========================================
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# 主程序
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# ========================================
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# 检查JAR文件是否存在
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check_jar_exists
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# 处理命令行参数
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case "${1:-restart}" in
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"start")
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start_app
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;;
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"stop")
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stop_app
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;;
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"restart")
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print_message $BLUE "重启应用..."
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stop_app
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if [ $? -eq 0 ]; then
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sleep 2
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start_app
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else
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print_message $RED "停止应用失败，取消重启"
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exit 1
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fi
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;;
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"status")
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show_status
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;;
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"help"|"-h"|"--help")
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show_help
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;;
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*)
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print_message $RED "未知选项: $1"
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show_help
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exit 1
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;;
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esac
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