list转json

Struts2中list转换为json

jar包下载地址

所需jar包，如下图：

实现代码，这里以execute方法为例：

@Override
	public String execute() throws Exception {
		//1.调用Service根据typecode获得数据字典对象list
		List list = baseDictService.getListByTypeCode(dict_type_code);
		//2.将list转换为json格式
		String json = JSONArray.fromObject(list).toString();
		//3.设置json的编码格式并且将json发送给浏览器
		ServletActionContext.getResponse().setContentType("application/json;charset=utf-8");
		ServletActionContext.getResponse().getWriter().write(json);
		return null;//告诉struts2不需要进行结果处理
	}

结果：

[{"dict_enable":"1","dict_id":"6","dict_item_code":"","dict_item_name":"电话营销","dict_memo":"","dict_sort":1,"dict_type_code":"002","dict_type_name":"客户信息来源"},{"dict_enable":"1","dict_id":"7","dict_item_code":"","dict_item_name":"网络营销","dict_memo":"","dict_sort":2,"dict_type_code":"002","dict_type_name":"客户信息来源"}]