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Hutool是一个小而全的Java工具类库,通过静态方法封装,降低相关API的学习成本,提高工作效率,使Java拥有函数式语言般的优雅,让Java语言也可以“甜甜的”。
package cn.hutool.extra.template.engine.wit;
import cn.hutool.core.io.FileUtil;
import cn.hutool.core.lang.Dict;
import cn.hutool.extra.template.Template;
import cn.hutool.extra.template.TemplateConfig;
import cn.hutool.extra.template.TemplateEngine;
import cn.hutool.extra.template.TemplateException;
import org.febit.wit.Engine;
import org.febit.wit.exceptions.ResourceNotFoundException;
import org.febit.wit.util.Props;
import java.io.File;
/**
* Wit(http://zqq90.github.io/webit-script/)模板引擎封装
*
* @author looly
*/
public class WitEngine implements TemplateEngine {
private Engine engine;
// --------------------------------------------------------------------------------- Constructor start
/**
* 默认构造
*/
public WitEngine() {}
/**
* 构造
*
* @param config 模板配置
*/
public WitEngine(TemplateConfig config) {
init(config);
}
/**
* 构造
*
* @param engine {@link Engine}
*/
public WitEngine(Engine engine) {
init(engine);
}
// --------------------------------------------------------------------------------- Constructor end
@Override
public TemplateEngine init(TemplateConfig config) {
init(createEngine(config));
return this;
}
/**
* 初始化引擎
* @param engine 引擎
*/
private void init(Engine engine){
this.engine = engine;
}
@Override
public Template getTemplate(String resource) {
if(null == this.engine){
init(TemplateConfig.DEFAULT);
}
try {
return WitTemplate.wrap(engine.getTemplate(resource));
} catch (ResourceNotFoundException e) {
throw new TemplateException(e);
}
}
/**
* 获取原始引擎的钩子方法,用于自定义特殊属性,如插件等
*
* @return {@link Engine}
* @since 5.8.7
*/
public Engine getRawEngine() {
return this.engine;
}
/**
* 创建引擎
*
* @param config 模板配置
* @return {@link Engine}
*/
private static Engine createEngine(TemplateConfig config) {
final Props configProps = Engine.createConfigProps("");
Dict dict = null;
if (null != config) {
dict = Dict.create();
// 自定义编码
dict.set("DEFAULT_ENCODING", config.getCharset());
switch (config.getResourceMode()){
case CLASSPATH:
configProps.set("pathLoader.root", config.getPath());
configProps.set("routeLoader.defaultLoader", "classpathLoader");
break;
case STRING:
configProps.set("routeLoader.defaultLoader", "stringLoader");
break;
case FILE:
configProps.set("pathLoader.root", config.getPath());
configProps.set("routeLoader.defaultLoader", "fileLoader");
break;
case WEB_ROOT:
final File root = FileUtil.file(FileUtil.getWebRoot(), config.getPath());
configProps.set("pathLoader.root", FileUtil.getAbsolutePath(root));
configProps.set("routeLoader.defaultLoader", "fileLoader");
break;
}
}
return Engine.create(configProps,dict);
}
}
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