Add script to integrate mise Java with macOS java_home

README.md

@@ -20,4 +20,5 @@
 - `nftables` 防火墙的配置文件
 - 恢复Windows默认应用的注册表（ `cmd` 、`batch` ...）
 - 截天帝论坛的自动打卡和挖矿脚本（基于[798love/discuz](https://github.com/798love/discuz)，感谢 @798love ）
+- `macOS` 下 `mise` 管理的 `Java` 与系统 `java_home` 的集成脚本
 - 其它一些脚本

mise_java_home_integration.sh

@@ -0,0 +1,168 @@
+#!/bin/bash
+
+# ==========================================
+# Mise Java -> macOS System Integration Tool
+# ==========================================
+#
+# Based on mise documentation:
+# https://mise.jdx.dev/lang/java.html
+#
+# Note: Not all distributions support this integration (e.g. liberica)
+# ==========================================
+
+# 1. Check if mise exists
+if ! command -v mise &> /dev/null; then
+    echo "❌ Error: mise command not found. Please ensure it is installed and added to PATH."
+    exit 1
+fi
+
+# 2. Get current Mise-activated Java information
+# Get the currently activated version number (e.g., openjdk-21)
+JAVA_VERSION_NAME=$(mise current java 2>/dev/null | awk '{print $1}')
+# Get the absolute installation path of this version
+JAVA_INSTALL_PATH=$(mise where java 2>/dev/null)
+
+if [ -z "$JAVA_INSTALL_PATH" ]; then
+    echo "❌ Error: No Mise Java version is active in the current directory."
+    echo "💡 Please run: mise use java@21 (or your desired version)"
+    exit 1
+fi
+
+# Additional validation: ensure version name is valid
+if [ -z "$JAVA_VERSION_NAME" ]; then
+    echo "❌ Error: Unable to retrieve Java version name."
+    exit 1
+fi
+
+# 3. Define target path (following mise official documentation naming convention, no prefix)
+TARGET_DIR="/Library/Java/JavaVirtualMachines/${JAVA_VERSION_NAME}.jdk"
+
+# ==========================================
+# Function Definitions
+# ==========================================
+
+function do_link() {
+    echo "🔍 Detected current Java: $JAVA_VERSION_NAME"
+    echo "📂 Source path: $JAVA_INSTALL_PATH"
+
+    # --- Core check: Does the source JDK have a Contents directory? ---
+    if [ ! -d "$JAVA_INSTALL_PATH/Contents" ]; then
+        echo "⚠️  Warning: This JDK version does not contain the standard macOS 'Contents' directory structure."
+        echo "🚫 This is a non-macOS standard build (possibly a Linux version) and cannot be directly linked to the system."
+        echo "🧹 No cleanup needed, operation cancelled."
+        exit 1
+    fi
+
+    # Check if target already exists
+    if [ -d "$TARGET_DIR" ]; then
+        echo "⚠️  Target already exists: $TARGET_DIR"
+        read -p "Overwrite? (y/n): " confirm
+        # Use tr to convert to lowercase for compatibility with older Bash versions (macOS default Bash 3.2)
+        if [[ $(echo "$confirm" | tr '[:upper:]' '[:lower:]') != "y" ]]; then exit 0; fi
+
+        if ! sudo rm -rf "$TARGET_DIR"; then
+            echo "❌ Failed to remove old directory, please check permissions."
+            exit 1
+        fi
+    fi
+
+    echo "🚀 Starting link creation..."
+
+    # Create directory and link following official documentation
+    # Use && to ensure proper cleanup if mkdir succeeds but ln fails
+    if sudo mkdir "$TARGET_DIR" && sudo ln -s "$JAVA_INSTALL_PATH/Contents" "$TARGET_DIR/Contents"; then
+        echo "✅ Link created successfully!"
+        echo "🔗 Mapping: $TARGET_DIR/Contents -> $JAVA_INSTALL_PATH/Contents"
+
+        # Verify that the link points to the expected source path
+        # Use realpath to normalize paths for comparison (handles potential relative path issues)
+        REAL_LINK_TARGET=$(realpath "$TARGET_DIR/Contents" 2>/dev/null)
+        EXPECTED_TARGET=$(realpath "$JAVA_INSTALL_PATH/Contents" 2>/dev/null)
+
+        # If realpath is not available or fails, compare readlink results directly
+        if [ -z "$REAL_LINK_TARGET" ] || [ -z "$EXPECTED_TARGET" ]; then
+            REAL_LINK_TARGET=$(readlink "$TARGET_DIR/Contents")
+            EXPECTED_TARGET="$JAVA_INSTALL_PATH/Contents"
+        fi
+
+        if [ "$REAL_LINK_TARGET" != "$EXPECTED_TARGET" ]; then
+            echo "❌ Link target mismatch!"
+            echo "   Expected: $EXPECTED_TARGET"
+            echo "   Actual: $REAL_LINK_TARGET"
+            echo "🧹 Performing cleanup..."
+            sudo rm -rf "$TARGET_DIR"
+            echo "✅ Cleanup completed."
+            exit 1
+        fi
+
+        # Verify that macOS actually recognizes this JDK
+        echo "------------------------------------------------"
+        echo "🔎 Verifying if macOS recognizes this JDK..."
+        # Check if the target directory appears in java_home output
+        # Use -Fi for case-insensitive fixed string matching
+        if /usr/libexec/java_home -V 2>&1 | grep -Fiq "${JAVA_VERSION_NAME}.jdk"; then
+            echo "✅ macOS has successfully recognized this JDK!"
+            echo "------------------------------------------------"
+            echo ""
+            echo "💡 Use the following command to view all available Java versions:"
+            echo "   /usr/libexec/java_home -V"
+        else
+            echo "⚠️  macOS could not recognize this JDK."
+            echo ""
+            echo "📚 This usually means the distribution does not support macOS system integration."
+            echo "💡 Common unsupported distributions include: liberica, etc."
+            echo ""
+            read -p "Keep the link anyway and continue? (y/n): " keep_link
+            # Use tr to convert to lowercase for compatibility with older Bash versions (macOS default Bash 3.2)
+            if [[ $(echo "$keep_link" | tr '[:upper:]' '[:lower:]') != "y" ]]; then
+                echo "🧹 Performing cleanup..."
+                sudo rm -rf "$TARGET_DIR"
+                echo "✅ Cleanup completed."
+                exit 1
+            fi
+        fi
+        echo "------------------------------------------------"
+    else
+        echo "❌ Link command execution failed!"
+        echo "🧹 Performing cleanup (removing empty directory)..."
+        sudo rm -rf "$TARGET_DIR"
+        echo "✅ Cleanup completed."
+        exit 1
+    fi
+}
+
+function do_unlink() {
+    echo "🗑  Preparing to remove system mapping: $TARGET_DIR"
+
+    if [ ! -d "$TARGET_DIR" ]; then
+        echo "⚠️  This path does not exist, may not have been linked: $TARGET_DIR"
+        exit 0
+    fi
+
+    sudo rm -rf "$TARGET_DIR"
+    echo "✅ Link removed. Original Mise files retained, only system integration disconnected."
+}
+
+# ==========================================
+# Main Logic
+# ==========================================
+
+ACTION=$1
+
+case "$ACTION" in
+    link)
+        do_link
+        ;;
+    unlink)
+        do_unlink
+        ;;
+    *)
+        echo "Usage: $0 [link | unlink]"
+        echo ""
+        echo "  link   : Link current Mise Java to macOS system directory"
+        echo "  unlink : Unlink current Mise Java from system"
+        echo ""
+        echo "Currently detected version: $JAVA_VERSION_NAME"
+        exit 1
+        ;;
+esac