map 转成对象 cookic utf-8字节转成字符串处理_header map 转 cookie-优快云博客

本文介绍如何在Java中使用阿里fastjson库将Map转换为对象的方法，包括泛型转换，并提供了一个实用的示例代码。此外，还详细讲解了Cookie的字节到字符转换过程，确保数据正确存储。

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map转对象方法:

1.依赖阿里 fastjson:

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.1.46.sec01</version>
</dependency>

//map 转对象 
public static <T> T parseMap2Object(Map<String, Object> paramMap, Class<T> cls) {
    return JSONObject.parseObject(JSONObject.toJSONString(paramMap), cls);

}

cookic字节转字符处理:

Cookie cookie = null;
      try {
  cookie = new Cookie("cartItem", URLEncoder.encode(json, "utf-8")); //转utf-8字节
      } catch (UnsupportedEncodingException e) {
         e.printStackTrace();
     }
cookie.setMaxAge(60 * 60 * 24 * 7);
cookie.setPath(request.getContextPath() + "/");//路径
response.addCookie(cookie);

String value = cookie.getValue();
value = URLDecoder.decode(value);  //utf-8字节转回字符串

Map转对象<泛型>

public static void main(String[] args) {
    Map<String,Object> map =new HashMap<>();
    map.put("orderType","已完成" );map.put("orderMoney",34.38 );map.put("orderNum","0002-000220201016-000001" );
    map.put("dealType","销售" );map.put("payTypeName","微信" );map.put("payType", 3);

    SalesOrder tobean = tobean(map, SalesOrder.class);
    System.out.println(tobean);
}


public static <T> T tobean(Map<String, Object> map, Class<T> clazz) {
    try {
        T bean = clazz.newInstance();
        BeanUtils.populate(bean, map);
        return bean;
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}