ssm+maven省市区三级联动

package com.controller; import java.io.IOException; import java.util.List; import javax.servlet.http.HttpServletResponse; import net.sf.json.JSONArray; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import com.service.impl.DomainServiceImpl; import com.vo.DomainVo; @Controller public class DomainController { @Autowired private DomainServiceImpl domainServiceImpl; @RequestMapping("/findProvice") public void findProvice(HttpServletResponse response) throws IOException{ List<DomainVo>list=domainServiceImpl.findProvince(); JSONArray arr=JSONArray.fromObject(list); response.getWriter().print(arr.toString()); } @RequestMapping("/findCityByPid") public void findCityByPid(Integer pId,HttpServletResponse response) throws IOException{ if(pId==null){ }else{ List<DomainVo>list=domainServiceImpl.findCityByPid(pId); JSONArray arr=JSONArray.fromObject(list); response.getWriter().print(arr.toString()); } } @RequestMapping("/findAreaByCid") public void findAreaByCid(Integer cId,HttpServletResponse response) throws IOException{ if(cId==null){ }else{ List<DomainVo>list=domainServiceImpl.findAreaByCid(cId); JSONArray arr=JSONArray.fromObject(list); response.getWriter().print(arr.toString()); } } }