三层json
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@Test
public void test1(){
//省
AreaList alProvince1=new AreaList();
alProvince1.setId("1");
alProvince1.setName("湖北省");
alProvince1.setPid("0");
alProvince1.setList(new ArrayList<>());
List<AreaList> listProvince=new ArrayList<>();
listProvince.add(alProvince1);
List<AreaList> listCity=new ArrayList<>();
AreaList alCity1=new AreaList();
alCity1.setId("11");
alCity1.setName("武汉市");
alCity1.setPid("1");
alCity1.setList(new ArrayList<>());
AreaList alCity2=new AreaList();
alCity2.setId("12");
alCity2.setName("荆州市");
alCity2.setPid("1");
alCity2.setList(new ArrayList<>());
listCity.add(alCity1);
listCity.add(alCity2);
List<Area> listCounty=new ArrayList<>();
Area county1=new Area();
county1.setId("111");
county1.setName("江岸区");
county1.setPid("11");
Area county2 =new Area();
county2.setId("121");
county2.setName("金州区");
county2.setPid("12");
Area county3 =new Area();
county3.setId("122");
county3.setName("荆州区");
county3.setPid("12");
listCounty.add(county1);
listCounty.add(county2);
listCounty.add(county3);
//区放入市
for(int m=0;m<listCity.size();m++){
for(int n=0;n<listCounty.size();n++){
if(listCity.get(m).getId().equals(listCounty.get(n).getPid())){
listCity.get(m).getList().add(listCounty.get(n));
}
}
}
//市放入省
for(int i=0; i<listProvince.size();i++){
for(int j=0;j<listCity.size();j++){
if(listProvince.get(i).getId().equals(listCity.get(j).getPid())){
listProvince.get(i).getList().add(listCity.get(j));
}
}
}
System.out.println(JSONArray.fromObject(listProvince).toString());
}
public void test1(){
//省
AreaList alProvince1=new AreaList();
alProvince1.setId("1");
alProvince1.setName("湖北省");
alProvince1.setPid("0");
alProvince1.setList(new ArrayList<>());
List<AreaList> listProvince=new ArrayList<>();
listProvince.add(alProvince1);
List<AreaList> listCity=new ArrayList<>();
AreaList alCity1=new AreaList();
alCity1.setId("11");
alCity1.setName("武汉市");
alCity1.setPid("1");
alCity1.setList(new ArrayList<>());
AreaList alCity2=new AreaList();
alCity2.setId("12");
alCity2.setName("荆州市");
alCity2.setPid("1");
alCity2.setList(new ArrayList<>());
listCity.add(alCity1);
listCity.add(alCity2);
List<Area> listCounty=new ArrayList<>();
Area county1=new Area();
county1.setId("111");
county1.setName("江岸区");
county1.setPid("11");
Area county2 =new Area();
county2.setId("121");
county2.setName("金州区");
county2.setPid("12");
Area county3 =new Area();
county3.setId("122");
county3.setName("荆州区");
county3.setPid("12");
listCounty.add(county1);
listCounty.add(county2);
listCounty.add(county3);
//区放入市
for(int m=0;m<listCity.size();m++){
for(int n=0;n<listCounty.size();n++){
if(listCity.get(m).getId().equals(listCounty.get(n).getPid())){
listCity.get(m).getList().add(listCounty.get(n));
}
}
}
//市放入省
for(int i=0; i<listProvince.size();i++){
for(int j=0;j<listCity.size();j++){
if(listProvince.get(i).getId().equals(listCity.get(j).getPid())){
listProvince.get(i).getList().add(listCity.get(j));
}
}
}
System.out.println(JSONArray.fromObject(listProvince).toString());
}
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