java - 是否可以通过在 Apache Velocity 中定义模板来生成 Java 代码？

Question

我需要使用 Velocity Template 概念生成一个 Java 文件。您能指导一下吗？

java 代码应该包含一些方法、导入和变量...

谢谢，伊斯瓦尔

Answer 1

对于velocity/java部分，您或多或少需要这样做:

// factory and an engine instance
VelocityEngineFactory velocityEngineFactory = new VelocityEngineFactory();
VelocityEngine engine = velocityEngineFactory.createVelocityEngine();
// now you need to give the variables you wanna have access from velocity script
VelocityContext context = new VelocityContext(properties);

ByteArrayOutputStream temp = new ByteArrayOutputStream();
BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(temp));
// generate the result, where scriptString is the velocity script
engine.evaluate(context, bufferedWriter, null, scriptString);
bufferedWriter.flush();
textResultant = temp.toString();

因此您可以创建一个脚本，加载它并以编程方式处理它。