java方法返回json数据详解编程语言

一：方法

/** 
	 * 返回json 
	 * @param request 
	 * @param response 
	 * @param session 
	 */ 
	@RequestMapping("/returnjson") 
	public void returnjson(HttpServletRequest request,HttpServletResponse response, HttpSession session) { 
		response.setCharacterEncoding("UTF-8");  
		response.setContentType("text/html;charset=UTF-8"); 
		PrintWriter wirte = null; 
		JSONObject json = new JSONObject(); 
		try { 
			wirte = response.getWriter(); 
			if(1==1){ 
				json.put("等式成立", "yes"); 
			}else{ 
				json.put("等式不成立", "no"); 
			} 
		} catch (Exception e) { 
			log.error(e, e); 
		}finally{ 
			wirte.print(json); 
			wirte.flush(); 
			wirte.close(); 
		} 
	}

二：启动项目访问：http://localhost:8080/wx/returnjson.do

三：结果

{“等式成立”:”yes”}