controller返回前台数据工具类-RespResult

左手的ㄟ右手 2024-02-19 15:42 57阅读 0赞

import java.util.HashMap;
    import java.util.Map;
    
    import com.fasterxml.jackson.annotation.JsonInclude.Include;
    import com.fasterxml.jackson.databind.ObjectMapper;
    
    public class RespResult {
    	public static  RespResult instance = null;
    	
    	public static RespResult  getInstance(){
    		return new RespResult();
    	}
    	private Map<String, Object> info = null;
    
    	private Map<String, Object> getInfo() {
    		if(info == null){
    			info = new HashMap<String, Object>();
    		}
    		return info;
    	}
    
    	public RespResult setInfo(String str, Object obj) {
    		getInfo();
    		info.put(str, obj);
    		return this;
    	}
    	  
    	
    	public String toJson() {
    		ObjectMapper objectMapper = new ObjectMapper();
    		String jsonStr = null;
    		try {
    			objectMapper.setSerializationInclusion(Include.NON_NULL);
    			jsonStr = objectMapper.writeValueAsString(info);
    		} catch (Throwable t) {
    			
    		}
    		info.clear();  info = null;
    		return jsonStr;
    	}
    }

//例如:
    
        @ResponseBody
        @RequestMapping("/test")
        public String test(HttpServletRequest req,@RequestParam Map<String, String> map){
            String name = Constant.ZLFB;
            String sort =  map.get("sort");
            String field1 =  map.get("field1");
            String field2 =  map.get("field2");
            String unit = new Utils().batchUpdateSort(name, sort, jdbcTemplate);
            int update = jdbcTemplate.update(" insert  into   jmrh_data_list (id,name,sort,unit,field1,field2) values('"+id.nextId()+"','"+name+"',"+sort+",'"+unit+"','"+field1+"','"+field2+"')   ");
            boolean bool=false;
            if (update==1) {
                bool=true;
            }
            return RespResult.getInstance().setInfo("status",bool).setInfo("status1",bool).toJson();
        }