自定义标签

如果内置标签不满足您的需求，您也可以自定义标签，本文帮助您快速掌握如何开发Fastcms自定义标签

# 标签基类

com.fastcms.core.directive.BaseDirective是Fastcms标签基类，自定义标签必须从该类继承

public abstract class BaseDirective implements TemplateDirectiveModel {

    protected static final String PARAM_COUNT = "count";
    protected static final String PARAM_ORDER_BY = "orderBy";

    private static final String DATA_KEY = "data";


    @Override
    public void execute(Environment env, Map params, TemplateModel[] loopVars, TemplateDirectiveBody body)
            throws TemplateException, IOException {
        DefaultObjectWrapperBuilder builder = new DefaultObjectWrapperBuilder(Configuration.VERSION_2_3_25);
        TemplateModel tm = builder.build().wrap(doExecute(env, params));
        env.setVariable(DATA_KEY, tm);
        body.render(env.getOut());
    }

    public abstract Object doExecute(Environment env, Map params);

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19

以内置菜单标签为例，继承自标签基类，代码如下

@Component("menuTag")
public class MenuDirective extends BaseDirective {

	@Autowired
	private IMenuService menuService;

	@Override
	public Object doExecute(Environment env, Map params) {
		return menuService.getMenus();
	}

}

1
2
3
4
5
6
7
8
9
10
11
12

# 如何使自定义标签生效

开发好标签之后，以插件的方式，安装插件使标签生效，无需重启服务器，即可直接在模板html文件中使用标签
下一章带您了解如何开发插件

上次更新: 2022/02/27, 02:44:28

← 内置标签插件结构→