/**
* @Description: 编译java文件
* @author muzb
* @date 2019年7月1日 上午9:42:16
* @param classRootPath class文件存放的根目录，com目录的上一层
* @param javaFileList 待编辑的java文件集合
* @return void
*/
private static void compileJavaFile(String classRootPath, List<File> javaFileList) throws Exception {
List<String> paths = new ArrayList<String>();
for(File file : javaFileList){
paths.add(file.getAbsolutePath());
}
JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<JavaFileObject>();
StandardJavaFileManager fileManager = compiler.getStandardFileManager(diagnostics, null, Charset.forName("UTF-8"));
Iterable<? extends JavaFileObject> compilationUnits = fileManager.getJavaFileObjectsFromStrings(paths);
String libRootPath = "";//依赖jar包所在路径
StringBuilder classPath = new StringBuilder();//编译依赖的class文件和jar包
classPath.append(classRootPath).append(";");
if("develop".equalsIgnoreCase(Global.env)){//开发环境
libRootPath = BaseVo.class.getProtectionDomain().getCodeSource().getLocation().getFile();
try {
libRootPath = java.net.URLDecoder.decode(libRootPath, "UTF-8").replaceFirst("/", "").substring(0, libRootPath.indexOf("/com/"));
} catch (UnsupportedEncodingException e1) {
e1.printStackTrace();
}
classPath.append(libRootPath).append("org\\springframework\\spring-web\\4.0.0.RELEASE\\spring-web-4.0.0.RELEASE.jar;");
classPath.append(libRootPath).append("org\\springframework\\spring-beans\\4.0.0.RELEASE\\spring-beans-4.0.0.RELEASE.jar;");
classPath.append(libRootPath).append("org\\springframework\\spring-context\\4.0.0.RELEASE\\spring-context-4.0.0.RELEASE.jar;");
}else if("product".equalsIgnoreCase(Global.env)){//生产环境
libRootPath = classRootPath.substring(0, classRootPath.length()-7)+"lib\\";
classPath.append(libRootPath).append("spring-web-4.0.0.RELEASE.jar;");
classPath.append(libRootPath).append("spring-beans-4.0.0.RELEASE.jar;");
classPath.append(libRootPath).append("spring-context-4.0.0.RELEASE.jar;");
}
//-d：输出class文件路径 -cp：依赖的class文件和jar包路径
Iterable<String> options = Arrays.asList("-d", classRootPath,"-cp",classPath.toString()); //编译选项
JavaCompiler.CompilationTask task = compiler.getTask(null, fileManager, diagnostics, options, null, compilationUnits);
boolean result = task.call();
if(!result){
//编译结果为false，输出编译出错信息
for (Diagnostic<?> diagnostic : diagnostics.getDiagnostics()) {
logger.error(diagnostic.getSource().toString()+"/"+diagnostic.getLineNumber()+"/"+diagnostic.getMessage(null));
}
}
try {
fileManager.close();
} catch (IOException e) {
e.printStackTrace();
}
}
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