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package cn.ibizlab.util.web;
import cn.ibizlab.util.filter.SearchContextBase;
import com.fasterxml.jackson.databind.ObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.core.MethodParameter;
import org.springframework.web.bind.support.WebDataBinderFactory;
import org.springframework.web.context.request.NativeWebRequest;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.method.support.ModelAndViewContainer;
import java.util.LinkedHashMap;
import java.util.Map;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;
@Slf4j
@Configuration
public class SearchContextHandlerMethodArgumentResolver implements HandlerMethodArgumentResolver {
@Value("${ibiz.pageLimit:1000}")
private int pageLimit=1000;
private static ObjectMapper objectMapper=new ObjectMapper();
@Override
public boolean supportsParameter(MethodParameter parameter) {
return SearchContextBase.class.isAssignableFrom(parameter.getParameterType());
}
@Override
public Object resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer,
NativeWebRequest webRequest, WebDataBinderFactory binderFactory) throws Exception {
Map<String, String[]> params = webRequest.getParameterMap();
LinkedHashMap<String,Object> set = new LinkedHashMap<>();
for (String key : params.keySet()) {
set.put(key,params.get(key)[0]);
}
if((!set.containsKey("size")) ){
set.put("size", pageLimit);
}
String json = objectMapper.writeValueAsString(set);
return objectMapper.readValue(json, parameter.getParameterType());
}
}