因为在前端要根据字典表中的数据去将1、2这些值转换成对应的文字解释
1.首先要创建一个类去实现
TemplateDirectiveModel 类
@Component
public class DictDirective
implements TemplateDirectiveModel {
@Override
public void execute(Environment environment, Map map, TemplateModel[] templateModels, TemplateDirectiveBody templateDirectiveBody)
throws TemplateException, IOException {
DefaultObjectWrapperBuilder builder =
new DefaultObjectWrapperBuilder(Configuration.VERSION_2_3_25);
if(map.containsKey("type") && map.get("type") !=
null){
String type = map.get("type"
).toString();
List<Dict> dictList =
DictUtils.getDictList(type);
if(map.containsKey("value") && map.get("value") !=
null){
String value = map.get("value"
).toString();
Dict dict =
null;
for (Dict dict1 : dictList) {
if(value.equals(dict1.getValue().toString())){
dict =
dict1;
}
}
environment.setVariable("dict"
, builder.build().wrap(dict));
}else{
environment.setVariable("dictList"
, builder.build().wrap(dictList));
}
}
if(templateDirectiveBody!=
null){
templateDirectiveBody.render(environment.getOut());
}
}
}
2.创建一个配置类
@Component
public class FreemarkerConfig {
@Autowired
private Configuration configuration;
@Autowired
private DictDirective dictDirective;
@PostConstruct
public void setSharedVariable()
throws TemplateModelException {
configuration.setSharedVariable("dict_tag"
, dictDirective);
}
}
然后就可以在页面上去调用了
<@dict_tag type="news_source" value="${news.source}">
${dict.label}
</@dict_tag>
前端可以任意传递参数，像type、value这样的，所有传递的参数都会被存到map里面，后台直接去取就可以了
