gradle+jcdk 构建最精简applet

build.gradle

@@ -0,0 +1,106 @@
+plugins {
+    id "java"
+}
+
+java {
+    sourceCompatibility = JavaVersion.VERSION_1_8
+    targetCompatibility = JavaVersion.VERSION_1_8
+}
+
+/** 源码在 src/ */
+sourceSets {
+    main { java { srcDirs = ["src"] } }
+}
+
+/** 统一编译编码 */
+tasks.withType(JavaCompile).configureEach { t ->
+    t.options.encoding = "UTF-8"
+    t.sourceCompatibility = "1.5"
+    t.targetCompatibility = "1.5"
+    def jcHome = System.getenv("JC_HOME")
+    if (!jcHome) throw new GradleException("缺少 JC_HOME")
+    t.options.bootstrapClasspath = files("${jcHome}/lib/api_classic.jar")
+    t.options.compilerArgs += ["-g:none", "-Xlint:none", "-XDignore.symbol.file"]
+}
+
+
+ext.JC_HOME = System.getenv('JC_HOME')
+
+
+/** 仅编译期提供 JavaCard API（不打包） */
+dependencies {
+    compileOnly files("${System.getenv("JC_HOME")}/lib/api_classic.jar")
+}
+
+/** ===== 用本地 JCDK converter 生成 CAP  ===== */
+def pkgName     = "com.zuc.zuc256"                         // ← 改成你的包名
+def appletClass = "${pkgName}.MyApplet"                    // ← 改成你的 Applet 全类名
+def packageAID  = "0xA0:0x00:0x00:0x03:0x33:0x01:0x01"     // ← 改成你的包 AID
+def appletAID   = "0xA0:0x00:0x00:0x03:0x33:0x01:0x01:0x01"// ← 改成你的实例 AID
+def ver         = "1.0"
+tasks.register("buildCap") {
+    group = "build"
+    description = "Generate CAP via JCDK converter.bat"
+    dependsOn("classes")
+
+    doLast {
+        // 仅在执行阶段读取 JC_HOME，避免配置期找不到属性
+        def jcHome = project.JC_HOME ?: System.getenv("JC_HOME")
+        if (!jcHome) {
+            throw new GradleException("未找到 JC_HOME（请设置环境变量或在 build.gradle 里 ext.JC_HOME=...）")
+        }
+
+        file("$buildDir/javacard").mkdirs()
+        def logFile = file("$buildDir/javacard/converter.log")
+
+        // 必要文件检查
+        def apiJar = new File(jcHome, "lib/api_classic.jar")
+        if (!apiJar.exists()) throw new GradleException("JC_HOME 无效：缺少 ${apiJar}")
+
+        def batFile = new File(jcHome, "bin/converter.bat")
+        if (!batFile.exists()) throw new GradleException("未找到 converter.bat：${batFile}")
+
+        // 确认 .class 存在
+        def cls = file("$buildDir/classes/java/main/${pkgName.replace('.','/')}/MyApplet.class")
+        if (!cls.exists()) throw new GradleException("未找到已编译类：${cls}")
+
+
+        println ">>> Running converter.bat:"
+        // 把整条命令拼成一个字符串，并对含空格的路径加引号
+        def convCmd = new StringBuilder()
+        convCmd << "\"${batFile.absolutePath}\""
+        convCmd << " -verbose"
+        convCmd << " -classdir \""   << file("$buildDir/classes/java/main").absolutePath             << "\""
+        convCmd << " -exportpath \"" << new File(jcHome, "api_export_files").absolutePath            << "\""
+        convCmd << " -applet "       << appletAID << " " << appletClass
+        convCmd << " -out CAP"
+        convCmd << " -d \""          << file("$buildDir/javacard").absolutePath                      << "\""
+        convCmd << " "               << pkgName << " " << packageAID << " " << ver
+
+        println convCmd.toString()
+
+        def outBytes = new ByteArrayOutputStream()
+        def result = project.exec {
+            // 注意：对 cmd.exe，命令必须作为“一个”字符串放在 /c 后面
+            commandLine "cmd", "/c", convCmd.toString()
+            ignoreExitValue = true
+            standardOutput = new org.apache.tools.ant.util.TeeOutputStream(outBytes, new FileOutputStream(logFile))
+            errorOutput    = standardOutput
+        }
+
+
+        // Windows 常见是 GBK，便于读中文
+        def out = outBytes.toString("GBK")
+        println(out)
+        println ">>> Converter log: ${logFile.absolutePath}"
+
+        if (result.exitValue != 0) {
+            println "---- converter.log tail ----"
+            println logFile.readLines("GBK").takeRight(80).join(System.lineSeparator())
+            throw new GradleException("converter 退出码：${result.exitValue}")
+        } else {
+            println "CAP 生成成功，目录：${file("$buildDir/javacard").absolutePath}"
+        }
+    }
+}
+