restTemplate 传递map

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@Autowiredprivate RestTemplate restTemplate;

//通过restTemplate post传递map方法  接口返回一个int类型public void longRangeTest(){   HttpHeaders headers = new HttpHeaders();   MediaType type = MediaType.parseMediaType("application/json; charset=UTF-8");    headers.setContentType(type);   headers.add("Accept", MediaType.APPLICATION_JSON.toString());   StringBuilder url = new StringBuilder("http://localhost:8889/longRangTest");   Map<String,Object> map = merge.findById("590fe009d09e9833a46185c7");   map.put("_id",map.get("_id").toString());   map.put("_tableName","MergeCommunity");   JSONObject jsonObj = JSONObject.fromObject(map);   HttpEntity<String> formEntity = new HttpEntity<>(jsonObj.toString(), headers);   System.err.println("返回:"+restTemplate.postForObject(url.toString(), formEntity , int.class));}
//接口action
@PostMapping("longRangTest")public int longRangTest(@RequestBody Map<String,Object> map){   return getSpiderService.updateDataMeta(map);}

//实现代码
/*** * @param entity * @return 0表示失败，1表示成功 */public int updateDataMeta(Map<String,Object> entity){    try {        if( entity.get("_tableName")==null) return 0;        String tableName = entity.get("_tableName").toString();//表明        Query query = new Query();        query.addCriteria(Criteria.where("_id").is(entity.get("_id")));        Update update = new Update();        Set<String> set = entity.keySet();//将传递过来的一个map转换为update进行跟新        for(String s : set){            update.set(s,entity.get(s));        }        mongoTemplate.upsert(query,update,tableName);    }catch (Exception e){        e.printStackTrace();        return 0;    }    return 1;}

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